VER1.5
Qualification of BRNS/BRFS/BRDS series
(Point of Load applications)
to Intermediate Bus Architecture
→ Page BRNS
→ Page BRFS/BRDS
→ Page BRFS/BRDS
→ Page CHS and BR
Applications Manual
1. Pin configuration
BRNS 1-1
2. Mounting and storage
BRNS 2-1
Mounting
BRNS 2-1
Automatic mounting
BRNS 2-2
Soldering
BRNS 2-2
Stencil Openings
BRNS 2-3
Cleaning
BRNS 2-4
Storage
BRNS 2-4
Safety considerations
BRNS 2-4
3. Connection and wiring
BRNS 3-1
Connection for standard use
BRNS 3-1
Wiring input pin
BRNS 3-2
Wiring output pin
BRNS 3-4
4. Applications data
BRNS 4-1
Efficiency
BRNS 4-1
Dynamic load response
BRNS 4-3
Ripple voltage
BRNS 4-7
Rise time
BRNS 4-8
Derating
BRNS 4-9
5. Adjustable voltage range
BRNS 5-1
6. Protect circuitry
BRNS 6-1
Overcurrent protection
BRNS 6-1
7. Remote ON/OFF
BRNS 7-1
8. Remote sensing
BRNS 8-1
When the remote sensing function is not use
BRNS 8-1
When the remote sensing function is use
BRNS 8-1
9. Power good
BRNS 9-1
10. Sequence
BRNS 10-1
11. Frequency synchronization
BRNS 11-1
12. Series Operation / Parallel operation
BRNS 12-1
Series operation
BRNS 12-1
Parallel operation / Redundant operation
BRNS 12-1
13. Package information
BRNS 13-1
2.7
2.4
2.6
2.5
BRNS series
Page
2.2
2.3
2.1
3.1
4.1
3.3
12.2
4.2
8.2
4.5
12.1
3.2
8.1
6.1
4.3
4.4
Fig. 1.1
Pin connection
for BRNS
(bottom view)
Table 1.1
Pin connection and
function of BRNS
(a) BRNS6/12 (b) BRNS20
BRNS 1-1
2.1
Pin configuration
1. Pin configuration
Applications manual
For BRNS series
2.1 Mounting
■
The unit can be mounted in any direction. When two or more power supplies are used side
by side, position them with proper intervals to allow enough air ventilation. The temperature
around each power supply should not exceed the temperature range shown in derating
curve.
■
Avoid placing the DC input line pattern layout underneath the unit, it will increase the line
conducted noise. Make sure to leave an ample distance between the line pattern layout and
the unit. Also avoid placing the DC output line pattern underneath the unit because it may
increase the output noise. Lay out the pattern away from the unit.
■
Avoid placing the signal line pattern layout underneath the unit, this power supply might
become unstable.
Lay out the pattern away from the unit.
■
Avoid placing pattern layout in hatched area in Fig.2.1.1 to insulate between pattern and
power supply.
Fig. 2.1.1
Prohibition area of
Pattern layout(top view)
(a)BRNS6/12
(b)BRNS20
BRNS 2-1
2.1
Pin configuration
2. Mounting and storage
Applications manual
For BRNS series
2.2 Automatic Mounting
■
To mount BRNS series automatically, use the coil area near the center of the PCB as
an adsorption point. Please see Fig.2.2.1 for details of the adsorption point.
Fig. 2.2.1
Adsorption area
2.3 Soldering
■
Fig.2.3.1 shows condition for reflow of BRNS series. Please make sure that the temperature
of board’s pattern near by +VOUT and GND terminal.
■
While soldering, having vibration or impact on the unit should be avoided, because of
solder melting.
■
Please do not do the implementation except the reflow.
■
Because some parts drops, please do not do reflow of the back side.
Fig. 2.3.1
Recommended reflow
soldering condition
(a) BRNS6/12 (b) BRNS20
BRNS 2-2
Applications manual
For BRNS series
2.4 Stencil Openings
■
Recommended size for stencil openings is shown in Fig.2.4.1.
Fig. 2.4.1
Recommended size
for stencil openings
(Top view)
Dimensions in mm , [ ] = inches
Recommended stencil thickness is 0.12mm
BRNS 2-3
(a) BRNS6 / 12
(b) BRNS20
Applications manual
For BRNS series
2.5 Cleaning
■
When cleaning is necessary, clean under the following conditions.
Method
: Varnishing, ultrasonic wave and vapor
Cleaning agents
: IPA (Solvent type)
Total time
: 2 minutes or less
■
Do not apply pressure to the lead and name plate with a brush or scratch it during the
cleaning.
■
After cleaning, dry them enough.
2.6 Storage
■
To stock unpacked products in your inventory, it is recommended to keep them under
controlled condition, 5-30
℃
, 60%RH and use them within a year.
■
24-hour baking is recommended at 125
℃
, if unpacked products were kept under
uncontrolled condition, which is 30
℃
, 60%RH or higher.
Original reels are not heat-resistant. Please move them to heatresistant trays in preparation
to bake.
To check moisture condition in the pack, Silica gel packet has some moisture condition
Indicator particles. Indicated blue means good. Pink means alarm to bake it.
■
The reels will be deformed and the power supply might be damaged, if the vacuum pressure
is too much to reseal.
2.7 Safety Consideration
■
To apply for safety standard approval using this power supply, the following conditions
must be met.
●
This unit must be used as a component of the end-use equipment.
●
Safety approved fuse must be externally installed on input side.
BRNS 2-4
Applications manual
For BRNS series
3.1 Connection for standard use
■
In order to use power supply, it is necessary to wire as shown in Fig. 3.1.1.
Fig. 3.1.1
Connection for
standard use
■
Short the following pins to turn on the power supply.
GND
⇔
RC, +VOUT
⇔
+S, GND
⇔
-S (-S : only BRNS20)
■
Connect resistance to set the output voltage between TRM and GND.
■
Between input and output is not isolated .
■
The BRNS series handle only the DC input.
Avoid applying AC input directly.
It will damaged the power supply.
BRNS 3-1
2.1
Pin configuration
3. Connection and wiring
Applications manual
For BRNS series
3.2 Wiring input pin
(1) External fuse
■
Fuse is not built-in on input side. In order to protect the unit, install the normal-blow
type fuse on input side.
■
When the input voltage from a front end unit is supplied to multiple units, install the
normal-blow type fuse in each unit.
■
When the fuse is open, power good signal is not outputted.
■
It is not necessary to use fuse if it can be protected by the overcurrent protection
function of bus converter on the input side.
Table 3.2.1
Recommended
fuse
(2) External capacitor on the input side
■
Install an external capacitor Ci, between +VIN and GND input pins for low line-noise
and for stable operation of the power supply.
Table 3.2.2
Recommended
external input capacitor
(Ceramic)
■
Ci is within 5mm for pins. Make sure that ripple current of Ci is less than its rating.
■
When an impedance and inductance level of the input line become higher, the input
voltage may become unstable. In that case, the input voltage becomes stable by
increasing Ci.
(3) Recommendation for noise-filter
■
Install an external input filter as shown in Fig.3.2.1 in order to reduce conducted noise.
Ci is shown in Table 3.2.2.
Fig. 3.2.1
Example of
recommended external
input filter
BRNS 3-2
Applications manual
For BRNS series
(4) Reverse input voltage protection
■
Avoid the reverse polarity input voltage. It will damage the power supply.
It is possible to protect the unit from the reverse input voltage by installing an external
diode as shown in Fig.3.2.2.
Fig. 3.2.2
Reverse input voltage
protection
BRNS 3-3
Applications manual
For BRNS series
3.3 Wiring output pin
■
When the BRNS series supplies the pulse current for the pulse load, please install a
capacitor Co between +VOUT and GND pins.
Fig. 3.3.1
Wiring external
output capacitor
Table 3.3.1
Recommended
Co and MaxCo
■
The output ripple voltage may grow big by resonance with Co and ESL of the wiring,
if resonance frequency and switching frequency are close.
■
Ripple and Ripple Noise are measured, as shown in the Fig.3.3.2. Cin is shown in
Table 3.2.2. Co1 and Co2 is shown in Table 3.3.2.
Fig. 3.3.2
Measuring method of
Ripple and Ripple Noise
Table 3.3.2
Co1 and Co2
which is used in
measuring
BRNS 3-4
BRNS12 47μFx1+100μFx1 1,000μF
3 BRNS20 100μFx2 1,000μF
No. Recommended Co Max CoModel
1 BRNS6 47μFx1+100μFx1 1,000μF
2
Applications manual
For BRNS series
4.1 Efficiency
Fig. 4.1.1
Efficiency
(BRNS6)
at 25℃
Fig. 4.1.2
Efficiency
(BRNS12)
at 25℃
Vout = 1.2V Vout = 3.3V
Vout = 5.0V
Vout = 1.2V Vout = 3.3V
BRNS 4-1
Efficiency [%]
Load Current [A]
60
68
76
84
92
100
0 2 4 6
Efficiency [%]
Load Current [A]
60
68
76
84
92
100
0 2 4 6
Efficiency [%]
Load Current [A]
60
68
76
84
92
100
0 2 4 6
Efficiency [%]
Load Current [A]
60
68
76
84
92
100
0 4 8 12
Efficiency [%]
Load Current [A]
60
68
76
84
92
100
0 4 8 12
2.1
Pin configuration
4. Applications data
Input Volt.
Input Volt.
Input Volt. 14.4V
5V
12V
Input Volt.
Input Volt.
Input Volt. 14.4V
5V
12V
Input Volt.
Input Volt.
Input Volt. 14.4V
6.5V
12V
Input Volt.
Input Volt.
Input Volt. 14.4V
5V
12V
Input Volt.
Input Volt.
Input Volt. 14.4V
5V
12V
Applications manual
For BRNS series
Fig. 4.1.3
Efficiency
(BRNS20)
at 25℃
Vout = 5.0V
BRNS 4-2
Vout = 1.2V Vout = 3.3V
Vout = 5.0V
Efficiency [%]
Load Current [A]
60
68
76
84
92
100
0 4 8 12
Efficiency [%]
Load Current [A]
60
68
76
84
92
100
0 5 10 15 20
Efficiency [%]
Load Current [A]
60
68
76
84
92
100
0 5 10 15 20
Efficiency [%]
Load Current [A]
60
68
76
84
92
100
0 5 10 15 20
Input Volt.
Input Volt.
Input Volt. 14.4V
6.5V
12V
Input Volt.
Input Volt.
Input Volt. 14.4V
5V
12V
Input Volt.
Input Volt.
Input Volt. 14.4V
5V
12V
Input Volt.
Input Volt.
Input Volt. 14.4V
6.5V
12V
Applications manual
For BRNS series
4.2 Dynamic Load Response
4.2.1 BRNS6
Fig. 4.2.1.1
Dynamic Load
Response
BRNS 4-3
100 μs/div
100 μs/div
100 μs/div
100 μs/div
100 mV/div
100 mV/div
Vin 12V, Vout 1.2V, Cin 22μF×2, Cout 1000μF
Testing Circuitry Fig .4.2.3.2
←
Load 50% (3A)
→
Load 0% (0A)
←
Load 100% (6A)
→
Load 50% (3A)
Cycle
Load Current
5 m t1,t2=50 μs
t1
t2
s
Applications manual
For BRNS series
4.2.2 BRNS12
Fig. 4.2.2.1
Dynamic Load
Response
BRNS 4-4
100 μs/div
100 μs/div 100 μs/div
100 μs/div
Cycle
Load Current
5 m t1,t2=50 μs
t1 t2
Vin 12V, Vout 1.2V, Cin 22μF×2, Cout 1000μF
Testing Circuitry Fig. 4.2.3.2
100 mV/div
100 mV/div
Load
50% ( 6 A) ←
Load 100% (12A)
→
s
←
→
Load 50% (6A)
Load 0% (0A)
Applications manual
For BRNS series
4.2.3 BRNS20
Fig. 4.2.3.1
Dynamic Load
Response
BRNS 4-5
100 μs/div
100 μs/div 100 μs/div
100 μs/div
Cycle
Load Current
5 m t1,t2=50 μs
t1 t2
Vin 12V, Vout 1.2V, Cin 22μF×3, Cout 1000μF
Testing Circuitry Fig. 4.2.3.2
100 mV/div
100 mV/div
Load
50% (10 A) ←
Load 100% (20A)
→
s
←
Load 50% (10A)
→
Load 0% (0A)
Applications manual
For BRNS series
Fig. 4.2.3.2
Measuring method
of Dynamic Load
Response
BRNS 4-6
Load
25mm
Cout2
+VIN
+VOUT
GND
DC
Input
Cin
+S
3mm
Cout1
Cin
22μF×2
22μF×2
22μF×33 BRNS20 100μF 900μF
No.
1
2
Model Cout1 Cout2
BRNS6
BRNS12 100μF 900μF
100μF 900μF
Oscilloscope
Bw:20MHz
Applications manual
For BRNS series
4.3 Ripple Voltage
Fig. 4.3.1
Ripple Voltage
of BRNS at 25℃
Fig. 4.3.2
Measuring method
of Ripple Voltage
BRNS 4-7
(a) BRNS6
1 μs/div
5 mV/div
Vin 12V Vout1.2V
Load Current 6A
1 μs/div
5 mV/div
(b) BRNS12
Vin 12V Vout1.2V
Load Current 20A
(ｃ) BRNS20
Vin 12V Vout1.2V
Load Current 12A
Oscilloscope
Bw:20MHz
R
C
R=50Ω
C=0.01uF
1.5m 50Ω
Coaxial cable
Load
25mm
Cout2
3mm
Cout1
+VIN
+VOUT
GND
DC
Input
Cin
+S
-S
900μF3 BRNS20 22μF×3 100μF
47μF 900μF
2 BRNS12 22μF×2 47μF 900μF
No. Model Cin Cout1 Cout2
1 BRNS6 22μF×2
1 μs/div
10 mV/div
100
100
100
Applications manual
For BRNS series
4.4 Rise time
Load current:0A, Cin:22μF×2, Cout:47μF+100μF
Fig. 4.4.1
BRNS6
Rise at 25℃
200mV/div 2V/div
5ms/div 5ms/div
Rise time: 3.3ms
Rise time: 3.8ms
Vin:8V, Vout:0.6V
Vin:12V, Vout:5.5V
Fig. 4.4.2
Load current:0A, Cin:22μF
×2, Cout:100
μF+47μF
BRNS12
Rise at 25℃
200mV/div 2V/div
5ms/div 5ms/div
Rise time: 3.5ms
Rise time: 3.8ms
Vin:8V, Vout:0.6V
Vin:12V, Vout:5.5V
Fig. 4.4.3
Load current:0A, Cin:22μF
×3, Cout:100
μF+100μF
BRNS20
Rise at 25℃
200mV/div 2V/div
5ms/div 5ms/div
Rise time: 3.3ms
Rise time: 3.5ms
Vin:8V, Vout:0.6V
Vin:12V, Vout:5.5V
BRNS 4-8
Applications manual
For BRNS series
4.5 Derating
■
Shows the temperature measurement points in Figure 4.5.2 and Figure 4.5.3.
That the temperature of the specified point be less than or equal to the temperature
shown in FIG. 1.Ambient temperature must be maintained at 85
℃
or less.
Fig. 4.5.1
Derating curve
for BRNS
Fig. 4.5.2
Temperature
measurement
location for BRNS6/12
Fig. 4.5.3
Temperature
measurement
location for BRNS20
BRNS 4-9
Applications manual
For BRNS series
■
Fig.4.5.5 ~ 4.5.13 show the derating curve in the condition that is measured
as shown in Fig.4.5.4.
Verify final design by actual temperature measurement.
The temperature measurement location as shown in Fig.4.5.2 and Fig.4.5.3
must keep below 120
℃.
Fig. 4.5.4
Measuring method
Fig. 4.5.5
Derating curve
for BRNS6
at 12Vin 1.2Vout
Fig. 4.5.6
Derating curve
for BRNS6
at 12Vin 3.3Vout
BRNS 4-10
12.7mm
76mm
25.4mm
BRNS20
PWB
Measurement point for
ambient temperature
and airflow
Airflow
Airflow
BRNS6/12
Airflow
A
B
0
4
3
2
1
40 60 80
Ambient temperature [℃]
-40 -20 0 20
6
Load current [A]
5
①
②
①
1m/s
②
2m/s
0
6
5
4
3
Load current [A]
2
1
40 60 80
Ambient temperature [℃]
-40 -20 0 20
①
②
①
1m/s
②
2m/s
BRNS
Applications manual
For BRNS series
Fig. 4.5.7
Derating curve
for BRNS6
at 12Vin 5.5Vout
Fig. 4.5.8
Derating curve
for BRNS12
at 12Vin 1.2Vout
Fig. 4.5.9
Derating curve
for BRNS12
at 12Vin 3.3Vout
Fig. 4.5.10
Derating curve
for BRNS12
at 12Vin 5.5Vout
BRNS 4-11
0
6
5
4
Load current [A]
3
2
1
40 60 80
Ambient temperature [℃]
-40 -20 0 20
①
②
①
1m/s
②
2m/s
0
40 60 80
Ambient temperature [℃]
-40 -20 0 20
Load current [A]
12
10
8
6
4
2
①
②
①
1m/s
②
2m/s
0
40 60 80
Ambient temperature [℃]
-40 -20 0 20
Load current [A]
12
10
8
6
4
2
①
②
①
1m/s
②
2m/s
0
40 60 80
Ambient temperature [℃]
-40 -20 0 20
Load current [A]
12
10
8
6
4
2
①
②
①
1m/s
②
2m/s
Applications manual
For BRNS series
Fig. 4.5.11
Derating curve
for BRNS20
at 12Vin 1.2Vout
Fig. 4.5.12
Derating curve
for BRNS20
at 12Vin 3.3Vout
Fig. 4.5.13
Derating curve
for BRNS20
at 12Vin 5.5Vout
BRNS 4-12
0
20
16
12
8
4
Load current [A]
-40
Ambient temperature [℃]
-20 0 20 40 60 80
①
1m/s
②
2m/s
① ②
0
40 60 80
Ambient temperature [℃]
Load current [A]
20
16
12
8
4
-40 -20 0 20
①
1m/s
②
2m/s
① ②
0
40 60 80
Ambient temperature [℃]
-40 -20 0 20
12
8
4
Load current [A]
20
16
①
1m/s
②
2m/s
①
②
Applications manual
For BRNS series
■
Output voltage is adjustable by the external resistor.
■
The temperature coefficient could become worse, depending on the type of a resistor.
Resistor
・・・・
Metal film type, coefficient of less than ±100ppm/
℃
■
When TRM is opened, output voltage is 0.6V.
■
R
TRM
is calculated in the following expressions.
Fig. 5.1.1
Calculation result
Fig. 5.1.2
Connecting R
TRM
R
TRM
=
12
[kΩ]
VOUT - 0.6
BRNS 5-1
2.1
Pin configuration
5. Adjustable voltage range
Applications manual
For BRNS series
■
Please use the output voltage in the operating area of Fig.5.1.3.
Transient response may worsen when used in vicinity of the border of the operating area.
Only for output voltage is rising and output current is small, there is a possibility
that the ripple voltage is high value. If the ripple voltage value is problem, connecting
a capacitor of Table 3.3.1 value.
Fig. 5.1.3
Operating area
of BRNS series
■
When start of DC INPUT is slow, BRNS may start on the outside of the operating area.
By the circuitry of the Fig.5.1.4, you can raise the start-up voltage.
Fig. 5.1.4
RC circuitry for start up
BRNS 5-2
Applications manual
For BRNS series
6.1 Overcurrent Protection
■
Over Current Protection (OCP) is built-in and works at 105% of the rated current or higher.
However, use in an overcurrent situation must be avoided whenever possible.
The output voltage of the power module will recover automatically when the fault causing
overcurrent is corrected.
When the output voltage drops after OCP works, the power module enters a ”hiccup mode”
where it repeatedly turns on and off at a certain frequency(5ms typ).
BRNS 6-1
2.1 Pin configuration
6. Protect circuit
Applications manual
For BRNS series
■
The remote ON/OFF function is incorporate in the input circuitry and operated with RC and GND.
If positive logic control is required , order the power supply with "-R" option.
■
When remote on/off function is not used, please open RC.
Table. 7.1.1
Specification of
Remote ON/OFF
Fig. 7.1.1
Internal circuitrys of
Remote ON/OFF
Fig. 7.1.2
RC connection
example
ON/OFF
logic
Between RC and GND
Output
voltage
Optional -R Positive
L level (-0.2-0.3V) or short OFF
H level (3.0-VIN) or open ON
Standard Negative
L level (-0.2-0.3V) or short or open ON
H level (3.0-VIN) OFF
BRNS 7-1
2.1
Pin configuration
7. Remote ON/OFF
Control
Circuit
22K
22K
RC
GND
+Vin
External
Circuit
Applications manual
For BRNS series
8.1 When the remote sensing function is not use
Fig. 8.1.1
Connection
when the remote
sensing is not in use
■
When the remote sensing function is not in use, it is necessary to confirm that pins
are shorted between +S & +VOUT and between -S & GND.
■
Wire between +S & +VOUT and between -S & GND as short as possible.
Loop wiring should be avoided.
This power supply might become unstable by the noise coming from poor wiring.
8.2 When the remote sensing function is use
Fig. 8.2.1
Connection
when the remote
sensing is in use
■
Twisted-pair wire or shield wire should be used for sensing wire.
■
Thick wire should be used for wiring between the power supply and a load.
Line drop should be less than 0.5V.
Voltage between +VOUT and GND should remain within the output voltage
adjustment range.
■
If the sensing patterns are short, heavy-current is drawn and the pattern may
be damaged.
The pattern disconnection can be prevented by installing the protection parts
as close as possible to a load.
BRNS 8-1
2.1
Pin configuration
8. Remote sensing
Applications manual
For BRNS series
■
By using PGOOD, it is possible to monitor power supply whether normal
operation or abnormal operation.
■
PGOOD terminal inside is comprised of at open drain.
Sink current of PGOOD is 50μA.
■
Voltage of PGOOD pin become low when over current protection circuitry is work,
or output voltage is different from a set point more than ±10%.
Fig. 9.1.1
Internal circuitry of
PGood
Fig.9.1.2
BRNS6
RC(5V/div) Vin:12V t0: 5ms(Max)
PGOOD
Vout:5.5V
Vout(2V/div) load current:0A
PGOOD(2V/div) Cin:22uFx2
Cout：100uF+47uF
5ms/div
Fig.9.1.3
BRNS12
RC(5V/div) Vin:12V t0: 5ms(Max)
PGOOD
Vout:5.5V
load current:0A
Vout(2V/div) Cin:22uFx2
PGOOD(2V/div)
Cout：100uF+47uF
5ms/div
Fig.9.1.4
Vin:12V t0: 5.0ms(Max)
BRNS20
RC(5V/div) Vout:5.5V
PGOOD
load current:0A
Cin:22uFx3
Vout(2V/div)
Cout：100uF×2
PGOOD(2V/div)
5ms/div
BRNS 9-1
9.Power Good
t0
t0
t0
Applications manual
For BRNS series
■
The adjustment of the rise time is possible by connecting C
ＳＥＱ
.
C
SEQ
[nF] = 6×T
RISE
[ms] - 15
■
C
SEQ
should be less than 1.0μF.
■
At the time of start, the output voltage follows the SEQ voltage.
Output voltage and SEQ voltage are expressed in the following calculation.
BRNS 10-1
10. Sequence
Applications manual
For BRNS series
■
With the voltage to input into SEQ pin, you can control a start sequence of plural BRNS.
Fig.10.1.1
Example of
sequence control
■
If this function is unnecessary , please make SEQ pin open .
BRNS 10-2
(a) The same time
(b) The same voltage
(c) The time lag
Applications manual
For BRNS series
■
BRNS can operate at the switching frequency that synchronized to frequency of square wave
input into SYNC pin.
There is a delay of 300nsec.
■
Fig.11.1.1 is example of frequency synchronization. And recommended wave form of SYNC pin
is shown in Fig.11.1.2
■
If this function is unnecessary, please make SYNC pin open or short to GND.
■
Please wire the input pin of both power supplies which is synchronizing to the same
pattern and voltage.
Fig. 11.1.1
Example of frequency
synchronization
Fig. 11.1.2
Recommended wave
from of SYNC
Table. 11.1.1
Specification of SYNC
pin voltage
BRNS 11-1
11. Frequency synchronization
Applications manual
For BRNS series
■
As shown in Fig.11.1.3, frequency synchronization is possible without using an outside clock.
Fig. 11.1.3
Example of CLK pin
connection
■
The maximum synchronization number is 5.
■
After the power supply which output CLK started, please start the synchronizing power supplies.
And when stop power supplies, you should stop the power supply which output CLK at first.
■
The max voltage of CLK pin is DC input voltage.
■
Applied voltage of the SYNC pin is equal to or larger than 5.5V to connect the ZD
CLK
(refer to Table.11.1.1)
BRNS 11-2
Applications manual
For BRNS series
12.1 Series operation
■
Series operation is not possible.
12.2 Parallel operation/Redundancy operation
■
Parallel operation is not possible.
■
Redundancy operation is available by wiring as shown below.
Fig. 12.2.1
Redundancy
operation
■
Even a slight difference in output voltage can affect the balance between
the values of I
1
and I
2
.■Current I
3
should not exceed the rated current of the power supply.
I 3≦ the rated current value
BRNS 12-1
12. Series operation/Parallel operation/Redundancy operation
Applications manual
For BRNS series
■
Please refer to Fig.13.1.1 ~ Fig.13.1.3 for Package form ( Reel ).
■
The packed number is 200.
Fig. 13.1.1
Taping dimensions
of BRNS6/12
Fig. 13.1.2
Taping dimensions
of BRNS20
BRNS 13-1
2.1
Pin configuration
13. Package Information
Applications manual
For BRNS series
Fig. 13.1.3
Reel dimensions
of BRNS
BRNS 13-2
Applications manual
For BRNS series
Applications Manual
1. Pin configuration
BRFS/BRDS 1-1
BRFS30/40
BRFS/BRDS 1-1
BRFS50/BRFS50L/BRFS60/BRFS100
BRFS/BRDS 1-2
BRDS40
BRFS/BRDS 1-3
BRDS60/100
BRFS/BRDS 1-4
2. Mounting and storage
BRFS/BRDS 2-1
Mounting
BRFS/BRDS 2-1
Automatic mounting
BRFS/BRDS 2-3
Soldering
BRFS/BRDS 2-4
Cleaning
BRFS/BRDS 2-5
Storage
BRFS/BRDS 2-5
Safety considerations
BRFS/BRDS 2-5
3. Connection for standard use
BRFS/BRDS 3-1
Connection for standard use
BRFS/BRDS 3-1
Wiring input pin
BRFS/BRDS 3-2
Wiring output pin
BRFS/BRDS 3-4
4. Applications data
BRFS/BRDS 4-1
Efficiency
BRFS/BRDS 4-1
Dynamic load response
BRFS/BRDS 4-9
Ripple voltage
BRFS/BRDS 4-22
Rise time
BRFS/BRDS 4-24
Derating
BRFS/BRDS 4-26
Thermal simulation model
BRFS/BRDS 4-35
5. Adjustable voltage range
BRFS/BRDS 5-1
6. Protect circuitry
BRFS/BRDS 6-1
Overcurrent protection
BRFS/BRDS 6-1
Thermal protection
BRFS/BRDS 6-1
7. Remote ON/OFF
BRFS/BRDS 7-1
8. Remote sensing
BRFS/BRDS 8-1
When the remote sensing function is not in use
BRFS/BRDS 8-1
When the remote sensing function is in use
BRFS/BRDS 8-1
9. Power Good
BRFS/BRDS 9-1
10. Series operation / Parallel operation
BRFS/BRDS 10-1
Series operation
BRFS/BRDS 10-1
Parallel operation
BRFS/BRDS 10-1
11. Sequence
BRFS/BRDS 11-1
12. Package information
BRFS/BRDS 12-1
2.2
3.3
4.4
4.2
3.2
2.6
2.5
3.1
2.3
2.4
4.1
BRFS/BRDS series
Page
2.1
1.1
1.2
1.3
1.4
6.2
4.3
4.5
6.1
4.6
8.1
8.2
10.1
10.2
1.1 BRFS30/40
Fig.1.1.1
Pin connection
for BRFS30/40/60S
(bottom view)
Table.1.1.1
Pin connection and
function of
BRFS30/40/60S
BRFS/BRDS 1-1
2.1
Pin configuration
1. Pin configuration
Applications manual
For BRFS/BRDS series
1.2 BRFS50/50L/60/100/120/150
Fig.1.2.1
Pin connection
for BRFS50/50L/60/100
/120/150
(bottom view)
(a) BRFS50/50L/60/120
(b) BRFS100/150
Table.1.2.1
Pin connection and
function of BRFS50/
50L/60/100/120/150
BRFS/BRDS 1-2
Applications manual
For BRFS/BRDS series
1.3 BRDS40
Fig.13.1
Pin connection
for BRDS40/60S
(bottom view)
Table.13.1
Pin connection and
function of BRDS40/60S
BRFS/BRDS 1-3
Applications manual
For BRFS/BRDS series
1.4 BRDS60/100
Fig.1.4.1
Pin connection
for BRDS60/100/120
(bottom view)
(a) BRDS60/120
(b) BRDS100/150
Table.1.4.1
Pin connection and
function of BRDS60/100
/120/150
BRFS/BRDS 1-4
Applications manual
For BRFS/BRDS series
2.1 Mounting
■
The unit can be mounted in any direction. When two or more power supplies are used side by
side, position them with proper intervals to allow enough air ventilation. The temperature
around each power supply should not exceed the temperature range shown in derating curve.
■
Avoid placing the DC input line pattern layout underneath the unit, it will increase the line
conducted noise. Make sure to leave an ample distance between the line pattern layout and
the unit. Also avoid placing the DC output line pattern underneath the unit because it may
increase the output noise. Lay out the pattern away from the unit.
■
Avoid placing the signal line pattern layout underneath the unit, this power supply might
become unstable.
Lay out the pattern away from the unit.
■
Avoid placing pattern layout in hatched area in Fig.2.1.1 to insulate between pattern and
power supply.
Fig.2.1.1
Prohibition area of
Pattern layout(top view)
(a)BRFS30
BRFS/BRDS 2-1
(b-2)BRDS60/120(b-1)BRFS50/BRFS50L/BRFS60/120
2.1
Pin configuration
2. Mounting and storage
Applications manual
For BRFS/BRDS series
(d-1)BRFS100/150 (d-2)BRDS100/150
BRFS/BRDS 2-2
(c-1)BRFS40/60S (c-2)BRDS40/60S
Applications manual
For BRFS/BRDS series
2.2 Automatic Mounting
■
To mount BRFS/BRDS series automatically, use the coil area near the center of the
PCB as an adsorption point. Please see Fig.2.2.1 for details of the adsorption point.
Fig.2.2.1
Adsorption area
(b) BRFS50/BRFS50L
BRFS/BRDS 2-3
(d) BRFS60/BRDS60
(a) BRFS30
(c) BRFS40/BRDS40
(e) BRFS100/BRDS100 (f) BRFS60S/BRDS60S
(g) BRFS120/BRDS120 (g) BRFS150/BRDS150
Applications manual
For BRFS/BRDS series
2.3 Soldering
■
Fig.2.3.1 shows condition for reflow of BRFS/BRDS series. Please make sure that the
temperature of pin shown in Fig.2.3.2 do not exceed the temperatures shown in Fig.2.3.1
■
While soldering, having vibration or impact on the unit should beavoided, because of
solder melting.
■
Please do not do the implementation except the reflow.
■
Because some parts drops, please do not do reflow of the back side.
Fig.2.3.1
Recommended reflow
soldering condition
Fig.2.3.2
Measurement point
of temperature
(bottom view)
BRFS/BRDS 2-4
+VIN
+VOUT
+VIN
SHARE
(a)BRFS30/40,
BRDS40
(b)
BRFS50/50L/60
,BRDS60
(c)BRFS100,BRDS100
+VIN
SHARE
Applications manual
For BRFS/BRDS series
2.4 Cleaning
■
When cleaning is necessary, clean under the following conditions.
Method
: Varnishing, ultrasonic wave and vapor
Cleaning agents
: IPA (Solvent type)
Total time
: 2 minutes or less
■
Do not apply pressure to the lead and name plate with a brush or scratch it during the
cleaning.
■
After cleaning, dry them enough.
2.5 Storage
■
To stock unpacked products in your inventory, it is recommended to keep them under
controlled condition, 5-30
℃
, 60%RH and use them within a year.
■
24-hour baking is recommended at 125
℃
, if unpacked products were kept under uncontrolled
condition, which is 30
℃
, 60%RH or higher.
Original reels are not heat-resistant. Please move them to heat resistant trays in preparation
to bake.
To check moisture condition in the pack, Silica gel packet has some moisture condition
Indicator particles. Indicated blue means good. Pink means alarm to bake it.
■
The reels will be deformed and the power supply might be damaged, if the vacuum pressure
is too much to reseal.
2.6 Safety Consideration
■
To apply for safety standard approval using this power supply, the following conditions
must be met.
●
This unit must be used as a component of the end-use equipment.
●
Safety approved fuse must be externally installed on input side.
BRFS/BRDS 2-5
Applications manual
For BRFS/BRDS series
3.1 Connection for standard use
■
Connection to be as Fig.3.1.1 and Fig.3.1.2.
Fig.3.1.1
Connection for
standard use of
BRFS30/40
Fig.3.1.2
Other Model
■
Short the following pins to turn on the power supply.
GND
←→
RC, +VOUT
←→
+S, GND
←→
-S (-S : other model than BRFS30/40)
■
Connect resistance to set the output voltage between TRM and GND.
■
Between input and output is not isolated .
■
The BRFS/BRDS series handle only the DC input.
Avoid applying AC input directly.
It will damaged the power supply.
BRFS/BRDS 3-1
2.1
Pin configuration
3. Connection method for standard use
Applications manual
For BRFS/BRDS series
3.2 Wiring input pin
(1) External fuse
■
Fuse is not built-in on input side. In order to protect the unit, install the normal-blow
type fuse on input side.(Recommended fuse current shown by Table3.2.1)
■
When the input voltage from a front end unit is supplied to multiple units, install the
normal-blow type fuse in each unit.
■
When the fuse is open, power good signal is not outputted.
■
It is not necessary to use fuse if it can be protected by the overcurrent protection
function of bus converter on the input side.
Table.3.2.1
External fuse
(2) External capacitor on the input side
■
Install an external capacitor Ci, between +VIN and GND input pins for low line-noise
and for stable operation of the power supply.
Table.3.2.2
Recommended
external input capacitor
(Ceramic)
■
Ci is within 5mm for pins. Make sure that ripple current of Ci is less than its rating.
■
When an impedance and inductance level of the input line become higher, the input
voltage may become unstable. In that case, the input voltage becomes stable by
increasing Ci.
(3) Recommendation for noise-filter
■
Install an external input filter as shown in Fig.3.2.1 in order to reduce conducted noise.
Ci is shown in Table.3.2.1
Fig.3.2.1
Example of
recommended external
input filter
BRFS/BRDS 3-2
Applications manual
For BRFS/BRDS series
125A5
BRFS60/60S,BRDS60/60S
BRFS100,BRDS100
BRFS120,BRDS120
3
100A
BRFS150,BRDS150
No. Rated current
1
Model
BRFS30/4050/50L,BRDS40 40A
2 60A
80A
4
BRFS150,BRDS1505
8×22μF 4×22μF
2×22μF 2×22μF
3 BRFS100,BRDS100
4 BRFS120,BRDS120
Rated current
No. Model
Vin=12V
1 BRFS30/4050/50L,BRDS40
2 BRFS60/60S,BRDS60/60S
Vin=5V
(4) Reverse input voltage protection
■
Avoid the reverse polarity input voltage. It will damage the power supply.
It is possible to protect the unit from the reverse input voltage by installing an external
diode as shown in Fig.3.2.2.
Fig.3.2.2
Reverse input voltage
protection
BRFS/BRDS 3-3
Applications manual
For BRFS/BRDS series
3.3 Wiring output pin
■
When the BRFS/BRDS series supplies the pulse current for the pulse load,
please install a capacitor Co between +VOUT and GND pins.
Fig.3.3.1
Wiring external
output capacitor
Table.3.3.1
Recommended
Co and MAX Co
■
The output ripple voltage may grow big by resonance with Co and ESL of the wiring.,
if resonance frequency and switching frequency are close.
■
Ripple and Ripple Noise are measured, as shown in Fig.3.3.2. Co1, Co2 and Co3 is
shown in Table 3.3.2.
Fig.3.3.2
Measuring method of
Ripple and Ripple Noise
Table.3.3.2
Co1,Co2 and Co3
which is used in
measuring
BRFS/BRDS 3-4
Applications manual
For BRFS/BRDS series
3×100μF
5 BRFS120/150,BRDS120/150 4×101μF 10,000μF
2 2×100μF
3
Recommend Co
10,000μF
4 BRFS100,BRDS100
2×100μF
20,000μF
Maximum Co
BRFS50/50L
10,000μF
BRFS60,BRDS60
10,000μF
No. Model
1 BRFS30/40/60S,BRDS40/60S
4×100μF
■
The inductance reduction of output line, it can reduce the fluctuation of the
power supply output voltage.
■
Inductance must not be inserted
■
Lowering the inductance of the board pattern
Fig.3.3.3
Output pattern
Inductance
■
+VOUT and GND are adjacent to each other between the layers of the multilayer board.
Fig.3.3.4
Inductance reduction
of the multilayer board
(a) Adjacent to the next layer
(b) Adjacent in the same layer
■
For the avoidance of unstable operation by the output pattern inductance,
recommended remote sensing the nearby load
Fig.3.3.5
Remote sensing the
nearby load
BRFS/BRDS 3-5
<Recommend
<Deprecated>
No inductance
Applications manual
For BRFS/BRDS series
4.1 Efficiency
Fig 4.1.1
Efficiency
(BRFS30)
at 25℃
Vout = 0.8V Vout = 1.0V
Vout = 1.2V Vout = 1.8V
Vout = 2.5V Vout = 3.3V
BRFS/BRDS 4-1
2.1 Pin configuration
4. Overview
Load Current [A]
Efficiency [%]
60
68
76
84
92
100
0 10 20 30
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Load Current [A]
Efficiency [%]
60
68
76
84
92
100
0 10 20 30
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Load Current [A]
Efficiency [%]
60
68
76
84
92
100
0 10 20 30
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Load Current [A]
Efficiency [%]
60
68
76
84
92
100
0 10 20 30
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Load Current [A]
Efficiency [%]
60
68
76
84
92
100
0 10 20 30
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Applications manual
For BRFS/BRDS series
Load Current [A]
Efficiency [%]
60
68
76
84
92
100
0 10 20 30
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Fig 4.1.2
Efficiency
(BRFS40/BRDS40)
at 25℃
Vout = 0.6V Vout = 1.0V
Vout = 1.2V Vout = 1.8V
Vout = 2.0V
BRFS/BRDS 4-2
Load C urrent [A]
Eff icienc y [%]
50
60
70
80
90
100
0 10 20 30 40
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Eff icienc y [ %]
Load C urrent [A ]
50
60
70
80
90
100
0 10 20 30 40
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Eff icienc y [% ]
Load C urrent [A]
50
60
70
80
90
100
0 1 0 20 3 0 40
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Effi ciency [%]
Load Current [A]
50
60
70
80
90
100
0 10 20 30 40
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Load Current [A]
Efficiency [% ]
50
60
70
80
90
100
0 1 0 20 3 0 40
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Applications manual
For BRFS/BRDS series
Fig 4.1.3
Efficiency
(BRFS50)
at 25℃
Vout = 0.7V Vout = 1.0V
Vout = 1.2V Vout = 1.8V
BRFS/BRDS 4-3
Load Current [A]
Efficiency [%]
60
68
76
84
92
100
0 10 20 30 40 50 60
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Load Current [A]
Efficiency [%]
60
68
76
84
92
100
0 10 20 30 40 50 60
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Load Current [A]
Efficiency [%]
60
68
76
84
92
100
0 10 20 30 40 50 60
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Load Current [A]
Efficiency [%]
60
68
76
84
92
100
0 10 20 30 40 50 60
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Applications manual
For BRFS/BRDS series
Fig 4.1.4
Efficiency
(BRFS60/BRDS60)
at 25℃
Vout = 1.2V Vout = 1.8V
Vout = 0.7V Vout = 1.0V
Vout = 2.0V
BRFS/BRDS 4-4
Load Current [A]
Efficiency [%]
50
60
70
80
90
100
0 10 20 30 40 5 0 60
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Efficiency [%]
Load Current [A]
50
60
70
80
90
100
0 10 20 30 40 5 0 60
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Efficiency [%]
Load Current [A]
50
60
70
80
90
100
0 10 2 0 30 40 5 0 60
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Efficiency [%]
Load Current [A]
50
60
70
80
90
100
0 10 20 30 40 5 0 60
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Efficiency [%]
Load Current [A]
50
60
70
80
90
100
0 1 0 20 30 40 50 60
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Applications manual
For BRFS/BRDS series
Fig 4.1.5
Efficiency
(BRFS100/BRDS100)
at 25℃
BRFS/BRDS 4-5
Vout = 0.7V Vout = 1.0V
Vout = 1.2V Vout = 1.8V
Vout = 2.0V
Load Current [A]
Efficiency [%]
60
68
76
84
92
100
0 20 40 60 8 0 100 120
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Load Current [A]
Efficiency [%]
60
68
76
84
92
100
0 20 40 60 80 100 120
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Efficiency [%]
Load Current [A]
60
68
76
84
92
100
0 20 40 60 80 100 120
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Load Current [A]
Efficiency [%]
60
68
76
84
92
100
0 20 4 0 60 80 1 00 120
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Load Current [A]
Efficiency [%]
60
68
76
84
92
100
0 20 40 60 80 100 1 20
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Applications manual
For BRFS/BRDS series
Fig 4.1.6
Efficiency
(BRFS60S/BRDS60S)
at 25℃
Vout = 0.6V Vout = 1.0V
Vout = 1.2V Vout = 1.8V
Vout = 2.0V
BRFS/BRDS 4-6
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Applications manual
For BRFS/BRDS series
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Fig 4.1.7
Efficiency
(BRFS120/BRDS120)
at 25℃
Vout = 0.6V Vout = 1.0V
Vout = 1.2V Vout = 1.8V
BRFS/BRDS 4-7
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Applications manual
For BRFS/BRDS series
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Fig 4.1.8
Efficiency
(BRFS150/BRDS150)
at 25℃
BRFS/BRDS 4-8
Vout = 0.6V Vout = 1.0V
Vout = 1.2V Vout = 1.8V
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
Applications manual
For BRFS/BRDS series
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
7
Input Volt.
Input Volt.
Input Volt. 14V
4.5V
12V
5
4.2 Dynamic Load Response
4.2.1 Wave
Form
1)BRFS30
Fig.4.2.1.1
Dynamic Load
Response
BRFS/BRDS 4-9
Min. Load (0A) ←→
Load 50% (15A)
100 μs/div
100 μs/div 100 μs/div
100 μs/div
100 mV/div
100 mV/div
Cycle 5 m
Load Current
t1,t2=50 μ
s
t1 t2
Load 50 % ( 15A) ←→
Load 100% (30A)
Vin 12V, Vout 1.2V, Cin 22μF×4, Cout 4000μF
Testing Circuitry Fig.4.2.3.1
s
Applications manual
For BRFS/BRDS series
2)BRFS40 , BRDS40
Fig 4.2.1.2
Dynamic Load
Response
BRFS/BRDS 4-10
100 μs/div
100 μs/div 100 μs/div
100 μs/div
Cycle
Load Current
5
m
t1,t2=50μs
t1 t2
Vin 12V, Vout 1.2V Cin 22μF×4, Cout 4000μF
Testing Circuitry Fig 4.2.3.1
100 mV/div
100 mV/div
s
←
Load 100% (40A)
→
Load 50% (20A)
Min. Load (0 A)
←
→
Load 50% (20A)
Applications manual
For BRFS/BRDS series
3)BRFS50
Fig.4.2.1.3
Dynamic Load
Response
BRFS/BRDS 4-11
100 μs/div
100 μs/div 100 μs/div
100 μs/div
Cycle
Load Current
5 m
t1,t2=50
μs
t1 t2
Vin 12V, Vout 1.2V, Cin 22μF×4, Cout 4000μF
Testing Circuitry Fig.4.2.3.1
100 mV/div
100 mV/div
s
Min. Load (0 A)
←
→
Load 50% (25A)
←
Load 100% (50A)
→
Load 50% (25A)
Applications manual
For BRFS/BRDS series
4) BRFS60,BRDS60
Fig.4.2.1.4
Dynamic Load
Response
BRFS/BRDS 4-12
100 μs/div
100 μs/div 100 μs/div
100 μs/div
Cycle
Load Current
5 m
t1,t2=50
μ
s
t1 t2
Vin 12V, Vout 1.2V, Cin 22μF×4, Cout 4000μF
Testing Circuitry Fig.4.2.3.1
100 mV/div
100 mV/div
s
←
Load 100% (60A)
→
Load 50% (30A)
Min. Load (0 A)
←
→
Load 50% (30A)
Applications manual
For BRFS/BRDS series
5)BRFS100,BRDS100
Fig.4.2.1.5
Dynamic Load
Response
BRFS/BRDS 4-13
100 μs/div
100 μs/div 100 μs/div
100 μs/div
Cycle
Load Current
5 m
t1,t2=50
μ
s
t1 t2
Vin 12V, Vout 1.2V, Cin 22μF×4, Cout 8000μF
Testing Circuitry Fig.4.2.3.1
100 mV/div
100 mV/div
Load
50% ( 50A) ←
Load 100% (100A)
→
s
Min. Load ( 0 A)
←
→
Load 50% (50A)
Applications manual
For BRFS/BRDS series
6)BRFS60S,BRDS60S
Fig.4.2.1.6
Dynamic Load
Response
BRFS/BRDS 4-14
100 μs/div
100 μs/div 100 μs/div
100 μs/div
Cycle
Load Current
5 m
t1,t2=50
μ
s
t1 t2
Vin 12V, Vout 1.2V, Cin 22μF×4, Cout 4000μF
Testing Circuitry Fig.4.2.3.2
100 mV/div
100 mV/div
Load
50% ( 30A) ←
Load 100% (60A)
→
s
Min. Load ( 0 A)
←
→
Load 50% (30A)
Applications manual
For BRFS/BRDS series
7)BRFS120,BRDS120
Fig.4.2.1.7
Dynamic Load
Response
BRFS/BRDS 4-15
100 μs/div
100 μs/div 100 μs/div
100 μs/div
Cycle
Load Current
5 m
t1,t2=50
μ
s
t1 t2
Vin 12V, Vout 1.2V, Cin 22μF×2, Cout 4000μF
Testing Circuitry Fig.4.2.3.2
100 mV/div
100 mV/div
Load
50% ( 60A) ←
Load 100% (120A)
→
s
Min. Load ( 0 A)
←
→
Load 50% (60A)
Applications manual
For BRFS/BRDS series
8)BRFS150,BRDS150
Fig.4.2.1.8
Dynamic Load
Response
BRFS/BRDS 4-16
100 μs/div
100 μs/div 100 μs/div
100 μs/div
Cycle
Load Current
5 m
t1,t2=50
μ
s
t1 t2
Vin 12V, Vout 1.2V, Cin 22μF×2, Cout 4000μF
Testing Circuitry Fig.4.2.3.2
100 mV/div
100 mV/div
Load
50% ( 75A) ←
Load 100% (150A)
→
s
Min. Load ( 0 A)
←
→
Load 50% (75A)
Applications manual
For BRFS/BRDS series
4.2.2 Capacitance
‐
Dynamic Load Response characteristics
1)BRFS30
Fig.4.2.2.1
Capacitance ‐
Dynamic Load
Response
characteristics
(BRFS30)
2)BRFS40,BRDS40
Fig 4.2.2.2
Capacitance ‐
Dynamic Load
Response
characteristics
(BRFS40,BRDS40)
BRFS/BRDS 4-17
Vin 12V, Cin 22μF×4, SR 1A/μs, Testing Circuitry Fig.4.2.3.1
0
100
200
300
400
500
0 1000 2000 3000 4000
⊿V(mV)
Cout(μF)
0-80% Vout=0.8V
0-80% Vout=1.2V
0-80% Vout=3.3V
0
100
200
300
400
500
0 1000 2000 3000 4000
⊿V(mV)
Cout(μF)
0-50% Vout=0.8V
0-50% Vout=1.2V
0-50% Vout=3.3V
⊿
V
V
⊿
⊿V=⊿
VA(⊿VA>⊿VB)
or ⊿VB(⊿VA<⊿VB)
.
0
100
200
300
400
500
0 1000 2000 3000 4000
⊿V(mV)
Cout(μF)
0-50% Vout=0.6V
0-50% Vout=1.2V
0-50% Vout=2.0V
0
100
200
300
400
500
0 1000 2000 3000 4000
⊿V(mV)
Cout(μF)
0-80% Vout=0.6V
0-80% Vout=1.2V
0-80% Vout=2.0V
⊿
V
V
⊿
⊿V=⊿
VA(⊿VA>⊿VB)
or ⊿VB(⊿VA<⊿VB)
Applications manual
For BRFS/BRDS series
Vin 12V, Cin 22μF×4, SR 1A/μs, Testing Circuitry Fig.4.2.3.1
3)BRFS50
Fig 4.2.2.3
Capacitance ‐
Dynamic Load
Response
characteristics
(BRFS50)
4)BRFS60/BRDS60
Fig 4.2.2.4
Capacitance ‐
Dynamic Load
Response
characteristics
(BRFS60/BRDS60)
BRFS/BRDS 4-18
0
100
200
300
400
0 1000 2000 3000 4000
⊿V(mV)
Cout(μF)
0-50% Vout=0.7V
0-50% Vout=1.2V
0-50% Vout=2.0V
0
100
200
300
400
0 1000 2000 3000 4000
⊿V(mV)
Cout(μF)
0-80% Vout=0.7V
0-80% Vout=1.2V
0-80% Vout=2V
0
100
200
300
400
500
0 1000 2000 3000 4000
⊿V(mV)
Cout(μF)
0-50% Vout=0.7V
0-50% Vout=1.2V
0-50% Vout=2.0V
0
100
200
300
400
500
0 1000 2000 3000 4000
⊿V(mV)
Cout(μF)
0-80% Vout=0.7V
0-80% Vout=1.2V
0-80% Vout=2.0V
⊿
V
V
⊿
⊿V=⊿
VA(⊿VA>⊿VB)
or ⊿VB(⊿VA<⊿VB)
⊿
V
V
⊿
⊿V=⊿
VA(⊿VA>⊿VB)
or ⊿VB(⊿VA<⊿VB)
Applications manual
For BRFS/BRDS series
Vin 12V, Cin 22μF×4, SR 1A/μs, Testing Circuitry Fig.4.2.3.1
Vin 12V, Cin 22μF×4, SR 1A/μs, Testing Circuitry Fig.4.2.3.2
5) BRFS100/BRDS100
Fig 4.2.2.5
Capacitance ‐
Dynamic Load
Response
characteristics
(BRFS100/BRDS100)
6) BRFS60S/BRDS60S
Fig 4.2.2.6
Capacitance ‐
Dynamic Load
Response
characteristics
(BRFS60S/BRDS60S)
BRFS/BRDS 4-19
0
100
200
300
400
500
0 1000 2000 3000 4000
⊿V(mV)
Cout(μF)
0-80% Vout=0.6V
0-80% Vout=1.2V
0-80% Vout=2.0V
0
100
200
300
400
500
0 1000 2000 3000 4000
⊿V(mV)
Cout(μF)
0-50% Vout=0.6V
0-50% Vout=1.2V
0-50% Vout=2.0V
⊿
V
V
⊿
⊿V=⊿
VA(⊿VA>⊿VB)
or ⊿VB(⊿VA<⊿VB)
0
100
200
300
400
500
0 2000 4000 6000 8000
⊿V(mV)
Cout(μF)
0-50% Vout=0.7V
0-50% Vout=1.2V
0-50% Vout=2.0V
0
100
200
300
400
500
0 2000 4000 6000 8000
⊿V(mV)
Cout(μF)
0-80% Vout=0.7V
0-80% Vout=1.2V
0-80% Vout=2.0V
Applications manual
For BRFS/BRDS series
⊿
V
V
⊿
⊿V=⊿
VA(⊿VA>⊿VB)
or ⊿VB(⊿VA<⊿VB)
Vin 12V, Cin 22μF×4, SR 1A/μs, Testing Circuitry Fig.4.2.3.2
Vin 12V, Cin 22μF×4, SR 1A/μs, Testing Circuitry Fig.4.2.3.1
7) BRFS120/BRDS120
Fig 4.2.2.7
Capacitance ‐
Dynamic Load
Response
characteristics
(BRFS120/BRDS120)
8) BRFS150/BRDS150
Fig 4.2.2.8
Capacitance ‐
Dynamic Load
Response
characteristics
(BRFS150/BRDS150)
BRFS/BRDS 4-20
⊿
V
V
⊿
⊿V=⊿
VA(⊿VA>⊿VB)
or ⊿VB(⊿VA<⊿VB)
Applications manual
For BRFS/BRDS series
⊿
V
V
⊿
⊿V=⊿
VA(⊿VA>⊿VB)
or ⊿VB(⊿VA<⊿VB)
Vin 12V, Cin 22μF×2, SR 1A/μs, Testing Circuitry Fig.4.2.3.2
Vin 12V, Cin 22μF×2, SR 1A/μs, Testing Circuitry Fig.4.2.3.2
4.2.3 Figure
Fig.4.2.3.1
Measuring method
of Dynamic Load
Response
Fig.4.2.3.2
Measuring method
of Dynamic Load
Response
BRFS/BRDS 4-21
Load
L
Cout
+VIN
+VOUT
GND
DC
Input
Cin
+S
RC
-S
Applications manual
For BRFS/BRDS series
Oscilloscope
Bw:20MHz
Load
L
Cout
+VIN
+VOUT
GND
DC
Input
Cin
+S
RC
-S
Oscilloscope
Bw:20MHz
1 BRFS30 10mm
No. Model L
2 BRFS40/100・BRDS40/100 50mm
50mm
No. Model L
1
BRFS50/60/60S/120/150
・
BRDS60/60S/120/150
4.3 Ripple Voltage
Fig.4.3.1
Ripple Voltage
of BRFS/BRDS
BRFS/BRDS 4-22
(a) BRFS30
2 μs/div
10 mV/div
Vin 12V,Vout1.2V, Load Cuurent 30A
Cin 22μF×4 , Cout 100μF×3
(Cout=Co2-4)
2 μs/div
10 mV/div
(b) BRFS40/BRDS40
(c) BRFS50
2 μs/div
2 μs/div
(d) BRFS60/BRDS60
10 mV/div
10 mV/div
(e) BRFS100/BRDS100
10 mV/div
2 μs/div
Applications manual
For BRFS/BRDS series
(f) BRFS60S/BRDS60S
2 μs/div
10 mV/div
Vin 12V,Vout1.2V, Load Cuurent 40A
Cin 22μF×4 , Cout 100μF×3
(Cout=Co0,Co2-4)
Vin 12V,Vout1.2V, Load Cuurent 50A
Cin 22μF×4 , Cout 100μF×2
(Cout=Co3,Co4)
Vin 12V,Vout1.2V, Load Cuurent 60A
Cin 22μF×4 , Cout 100μF×2
(Cout=Co3,Co4)
Vin 12V,Vout1.2V, Load Cuurent 100A
Cin 22μF×4 , Cout 100μF×4
(Cout=Co1-4)
Vin 12V,Vout1.2V, Load Cuurent 60A
Cin 22μF×4 , Cout 100μF×3
(Cout=Co2-Co4)
Fig.4.3.2
Measuring method
of Ripple Voltage
BRFS/BRDS 4-23
Applications manual
For BRFS/BRDS series
(g) BRFS120/BRDS120
10 mV/div
2 μs/div
2 μs/div
10 mV/div
(h) BRFS150/BRDS150
Vin 12V,Vout1.2V, Load Cuurent 120A
Cin 22μF×2 , Cout 100μF×4
(Cout=Co1-4)
Vin 12V,Vout1.2V, Load Cuurent 150A
Cin 22μF×2 , Cout 100μF×4
(Cout=Co1-4)
－ －
100μF
－－ －
100μF
－
100μF
Co3 Co4
100μF 100μF
100μF
100μF
100μF
100μF
100μF 100μF 100μF 100μF
BRFS50/50L/60,BRDS603
4
BRFS100/120/150,
BRDS100/120/150
－
Co0 Co1 Co2
2
1
No.
BRFS40,BRDS40
BRFS30/60S・BRDS60S
Model
Load
50mm
1.5m 50Ω
Coaxial cable
R
C
R=50Ω
C=0.01uF
+VIN
+VOUT
GND
Co2
DC
Input
Ci
+S
-S
RC
1mm
Co3
1mm
Co1
1mm
Co0
1mm
Co4
Oscilloscope
Bw :20MHz
22μF
×
4
4.4 Rise time
Vin : 12V , Load current:0A , Cin:22uFx4
Fig. 4.4.1
BRFS30
Cout:300uF
500mV/div 1V/div
5ms/div 5ms/div
Rise time: 1.0ms Rise time: 5.5ms
(a) Vout : 0.8V (b) Vout : 3.63V
Fig. 4.4.2
BRFS40,BRDS40
Cout:300uF
200mV/div 1V/div
5ms/div 5ms/div
Rise time: 1.0ms Rise time: 3.0ms
(a) Vout : 0.6V (b) Vout : 2.0V
Fig. 4.4.3
BRFS50
Cout:200uF
200mV/div 1V/div
5ms/div 5ms/div
Rise time: 1.0ms Rise time: 3.0ms
(a) Vout : 0.7V (b) Vout : 2.0V
Fig. 4.4.4
BRFS60,BRDS60
Cout:200uF
200mV/div 1V/div
5ms/div 5ms/div
Rise time: 1.0ms Rise time: 3.0ms
(a) Vout : 0.7V (b) Vout : 2.0V
BRFS/BRDS 4-24
Applications manual
For BRFS/BRDS series
Fig. 4.4.5
BRFS100,BRDS100
Cout:400uF
200mV/div 1V/div
5ms/div 5ms/div
Rise time: 1.0ms Rise time: 3.0ms
(a) Vout : 0.7V (b) Vout : 2.0V
Fig. 4.4.6
BRFS60S,BRDS60S
Cout:400uF
200mV/div 1V/div
5ms/div 5ms/div
Rise time: 1.0ms Rise time: 3.5ms
(a) Vout : 0.6V (b) Vout : 2.0V
Fig. 4.4.7
BRFS120,BRDS120
Cout:400uF
200mV/div 1V/div
5ms/div 5ms/div
Rise time: 1.3ms Rise time: 3.5ms
(a) Vout : 0.6V (b) Vout : 1.8V
Fig. 4.4.8
BRFS150,BRDS150
Cout:400uF
200mV/div 1V/div
5ms/div 5ms/div
Rise time: 1.3ms Rise time: 3.5ms
(a) Vout : 0.6V (b) Vout : 1.8V
BRFS/BRDS 4-25
Applications manual
For BRFS/BRDS series
4.5 Derating
■
Make sure the temperatures measurement locations shown from Fig.4.5.2 and Fig.4.5.3
below are on or under the derating curve in Fig.4.5.1.
Ambient temperature must be kept at 85
℃
or under.
Fig.4.5.1
Derating curve
for BRFS
Fig.4.5.2
Temperature
measurement
location
(a) BRFS30 (b) BRFS50
(c) BRFS40/BRDS40 (d) BRFS60/BRDS60 (e) BRFS100/BRDS100
(f) BRFS60S/BRDS60S (g) BRFS120/BRDS120 (h) BRFS150/BRDS150
BRFS/BRDS 4-26
Applications manual
For BRFS/BRDS series
■
Fig.4.5.5 ~ 4.5.10 show the derating curve in the condition that is measured
as shown in Fig.4.5.4.
Verify final design by actual temperature measurement.
The temperature measurement location as shown in Fig.4.5.2 and Fig.4.5.3
must keep below 120
℃.
Fig.4.5.4
Measuring method
Fig.4.5.5
Derating curve
for BRFS30
at 12Vin 0.8Vout
Fig.4.5.6
Derating curve
for BRFS30
at 12Vin 1.2Vout
BRFS/BRDS 4-27
PWB
12 .7 m m
76 mm
Measurement poi n t for
ambien t temperatur e
an d airflow
Airf lo w
BR FS30
25 .4 m m
Airflo w
Airf lo w
BR F S50
BRFS
0
8020 40 60
100
50
-40 -20 0
Load factor[%]
Ambient temperature [℃]
①
1m/s
②
2m/s
①②
0
100
50
-40 -20 0 20 40 60 80
Load factor[%]
Ambient temperature [℃]
①
1m/s
②
2m/s
①②
Applications manual
For BRFS/BRDS series
BRFS120
Fig.4.5.7
Derating curve
for BRFS30
at 12Vin 3.3Vout
Fig.4.5.8
Derating curve
for BRFS50
at 12Vin 0.7Vout
Fig.4.5.9
Derating curve
for BRFS50
at 12Vin 1.2Vout
Fig.4.5.10
Derating curve
for BRFS50
at 12Vin 2.0Vout
BRFS/BRDS 4-28
0
100
50
-40 -20 0 2 0 40 60 8 0
Load factor[%]
Ambient temperature [℃]
①
1m/s
②
2m/s
②
①
0
40 60 80
100
50
-40 -20 0 20
Load factor[%]
Ambient temperature [℃]
①
1m/s
②
2m/s
①
②
0
60 80
100
50
-40 -20 0 20 40
Load factor[%]
Ambient temperature [℃]
①
1m/s
②
2m/s
①
②
Applications manual
For BRFS/BRDS series
0
60 8040
100
50
-40 -20 0 20
Load factor[%]
Ambient temperature [℃]
①
1m/s
②
2m/s
①
②
Fig.4.5.8
Derating curve
for BRFS40/BRDS40
at 12Vin 0.7Vout
Fig.4.5.9
Derating curve
for BRFS40/BRDS40
at 12Vin 1.2Vout
Fig.4.5.10
Derating curve
for BRFS40/BRDS40
at 12Vin 2.0Vout
BRFS/BRDS 4-29
0
60 800 20 40
100
50
-40 -20
Load factor[%]
Ambient temperature
[℃]
①
1m/s
②
2m/s
①
②
0
40 60 80
100
50
-40 -20 0 20
Load factor[%]
Ambient temperature
[℃]
①
1m/s
②
2m/s
①
②
Ambient temperature
[℃]
0
8020 40 60
100
50
-40 -20 0
Load factor[%]
Ambient temperature
[℃]
①
1m/s
②
2m/s
①
②
Applications manual
For BRFS/BRDS series
Fig.4.5.8
Derating curve
for BRFS60/BRDS60
at 12Vin 0.7Vout
Fig.4.5.9
Derating curve
for BRFS60/BRDS60
at 12Vin 1.2Vout
Fig.4.5.10
Derating curve
for BRFS60/BRDS60
at 12Vin 2.0Vout
BRFS/BRDS 4-30
0
40 60 80-20 0 20
100
50
-40
Load factor[%]
Ambient temperature
[℃]
①
1m/s
②
2m/s
①
②
0
100
50
-40 -20 0 20 40 60 80
Load factor[%]
Ambient temperature
[℃]
①
1m/s
②
2m/s
①
②
0
40 60 80-40 -20 0 20
100
50
Load factor[%]
Ambient temperature
[℃]
①
1m/s
②
2m/s
①
②
Applications manual
For BRFS/BRDS series
Fig.4.5.8
Derating curve
for BRFS100/BRDS100
at 12Vin 0.7Vout
Fig.4.5.9
Derating curve
for BRFS100/BRDS100
at 12Vin 1.2Vout
Fig.4.5.10
Derating curve
for BRFS100/BRDS100
at 12Vin 2.0Vout
BRFS/BRDS 4-31
0
40 60 80-40 -2 0 0 20
100
50
Load factor[%]
Ambient temperature
[℃]
①
1m/s
②
2m/s
①
②
Applications manual
For BRFS/BRDS series
0
50
-40 -20 0 8020 6040
100
Load factor[%]
Ambient temperature [℃]
①
1m/s
②
2m/s
①
②
0
20 40 60 80-40 -20 0
50
100
Load factor[%]
①
1m/s
②
2m/s
①
②
Ambient temperature [℃]
Fig.4.5.11
Derating curve
for BRFS60S/BRDS60S
at 12Vin 0.6Vout
Fig.4.5.１2
Derating curve
for BRFS60S/BRDS60S
at 12Vin 1.2Vout
Fig.4.5.13
Derating curve
for BRFS60S/BRDS60S
at 12Vin 2.0Vout
BRFS/BRDS 4-32
Applications manual
For BRFS/BRDS series
0
100
50
-40 40 60 80-20 0 20
Load factor[%]
Ambient temperature [℃]
①
1m/s
②
2m/s
①
②
0
100
50
-40 -20 0 20 40 60 80
Load factor[%]
Ambient temperature [℃]
①
1m/s
②
2m/s
①
②
0
100
50
40 60 80-20 0 20
Ambient temperature [℃]
Load factor[%]
①
1m/s
②
2m/s
①
②
Fig.4.5.14
Derating curve
for BRFS120/BRDS120
at 12Vin 0.6Vout
Fig.4.5.１5
Derating curve
for BRFS120/BRDS120
at 12Vin 1.2Vout
Fig.4.5.16
Derating curve
for BRFS120/BRDS120
at 12Vin 1.8Vout
BRFS/BRDS 4-33
Applications manual
For BRFS/BRDS series
0
100
50
20 40 60 80-40 -20 0
Load factor[%]
Ambient temperature
[℃]
①
1m/s
②
2m/s
①
②
0
100
50
-40 -20 0 20 40 60 80
Load factor[%]
Ambient temperature [℃]
①
1m/s
②
2m/s
①
②
0
60 80
100
50
-20 0 20 40
Ambient temperature [℃]
Load factor[%]
①
1m/s
②
2m/s
①
②
Fig.4.5.17
Derating curve
for BRFS150/BRDS150
at 12Vin 0.6Vout
Fig.4.5.１8
Derating curve
for BRFS150/BRDS150
at 12Vin 1.2Vout
Fig.4.5.19
Derating curve
for BRFS150/BRDS150
at 12Vin 1.8Vout
BRFS/BRDS 4-34
Applications manual
For BRFS/BRDS series
0
40 60 80
100
50
-40 -20 0 20
Load factor[%]
Ambient temperature [℃]
①
1m/s
②
2m/s
①
②
0
60 80-40 -20 0 20 40
100
50
Load factor[%]
Ambient temperature [℃]
①
1m/s
②
2m/s
①
②
0
100
50
-20 0 20 40 60 80
Ambient temperature
[℃]
Load factor[%]
①
1m/s
②
2m/s
①
②
4.6 Thermal simulation model
■
We offers a thermal simulation model that can be used for thermal design.
It shows the simulation model and the simulation example of BRFS30 and BRFS50 below.
These model will enable thermal design on simulation using ANSYS icepack.
Please contact our customer support for more information or request of the simulation model.
Fig.4.6.1
Thermal simulation
model
(a) BRFS30 model (b) BRFS50 model
Fig.4.6.2
Simulation example
(BRFS50)
(a) Simulation(BRFS50)
(b) Actual measurement(BRFS50)
BRFS/BRDS 4-35
BRFS50
Applications manual
For BRFS/BRDS series
■
Output voltage is adjustable by the external resistor.
■
The temperature coefficient could become worse, depending on the type of a resistor.
Resistor
・・・・
Metal film type, coefficient of less than ±100ppm/
℃
■
When TRM is opened, output voltage is the minimum.
■
R
TRM
is calculated in the following expressions.
Table.5.1.1
Calculation result
Fig.5.1.1
Connecting
BRFS/BRDS 5-1
2.1
Pin configuration
5. Adjustable voltage range
(a)BRFS30
(b)BRFS40・60S・120・150/
BRDS40・60S・120・150
+VOUT
+TRM
GND
Load
+S
R
TRM
BRFS30
][
8.0
8
Ω
k
VOUT
R
TRM
][
7.0
14
Ω
k
VOUT
R
TRM
][
6.0
12
Ω
k
VOUT
R
TRM
+VOUT
+TRM
GND
Load
+S
R
TRM
BRFS40
+VOUT
+TRM
GND
Load
+S
-S
R
TRM
-TRM
BRFS
50/50L/
60/100
No
VOUT
R
TRM
1
0.8
OPEN
2
1.0
40.0kΩ
3
1.2
20.0kΩ
4
1.5
11.429kΩ
5
1.8
8.0kΩ
6
2.5
4.706kΩ
7
3.3
3.2kΩ
No
VOUT
R
TRM
1 0.7 OPEN
2
1.0
46.6kΩ
3 1.2 28kΩ
4
1.5
17.5kΩ
5
1.8
12.7kΩ
No VOUT R
TRM
1 0.6 OPEN
2 1.0 30.0kΩ
3 1.2 20.0kΩ
4 1.5 13.3kΩ
5 1.8 10.0kΩ
(c)BRFS50・60・100/
BRDS60/100
(a)BRFS30
(c)BRFS50・60・100/
BRDS60/100
(a)BRFS30
Applications manual
For BRFS/BRDS series
(b)BRFS40・60S・120・150/
BRDS40・60S・120・150
(c)BRFS50・60・100/
BRDS60/100
(b)BRFS40・60S・120・150/
BRDS40・60S・120・150
6.1 Overcurrent Protection
■
Over Current Protection (OCP) is built-in and works at 105% of the rated current or higher.
However, use in an overcurrent situation must be avoided whenever possible.
The output voltage of the power module will recover automatically when the fault causing
overcurrent is corrected.
When the output voltage drops after OCP works, the power module enters a ”hiccup mode”
where it repeatedly turns on and off at a certain frequency(1.2sec typ).
6.2 Thermal protection
■
When the power supply temperature is kept above 120
℃
, the thermal protection will be
activated and simultaneously shut down the output.
The output voltage of the power supply will recover automatically when the unit is cool down.
BRFS/BRDS 6-1
2.1
Pin configuration
6. Protect circuit
Applications manual
For BRFS/BRDS series
■
The remote ON/OFF function is incorporate in the input circuitry and operated with RC and -Vin.
If positive logic control is required , order the power supply with "-R" option.
■
When remote on/off function is not used, please short GND and RC.
Table 7.1.1
Specification of
Remote ON/OFF
*Source current from RC pin is 0.5mA(max).
Fig. 7.1.1
Internal circuitrys of
Remote ON/OFF
Fig. 7.1.2
RC connection
example
BRFS/BRDS 7-1
ON/OFF
logic
Between RC and GND
Output
voltage
Optional "-R" Positive
L level(-0.2 - 0.6V) or short OFF
H level(3.0 - VIN) or open ON
Standard Negative
L level(-0.2 - 0.6V) or short ON
H level(3.0 - VIN) or open OFF
2.1
Pin configuration
7. Remote ON/OFF
Applications manual
For BRFS/BRDS series
8.1 When the remote sensing function is not in use
Fig. 8.1.1
Connection
when the remote
sensing is not in use
■
When the remote sensing function is not in use, it is necessary to confirm that pins
are shorted between +S and +VOUT ,and between -S and GND.
■
Wire between +S and +VOUT ,and between -S and GND as short as possible.
Loop wiring should be avoided.
This power supply might become unstable by the noise coming from poor wiring.
8.2 When the remote sensing function is in use
Fig. 8.2.1
Connection
when the remote
sensing is in use
■
Twisted-pair wire or shield wire should be used for sensing wire.
■
Thick wire should be used for wiring between the power supply and a load.
Line drop should be less than 0.5V.
Voltage between +VOUT and GND should remain within the output voltage adjustment range.
■
If the sensing patterns are short, heavy-current is drawn and the pattern may be damaged.
The pattern disconnection can be prevented by installing the protection parts as close
as possible to a load.
BRFS/BRDS 8-1
2.1
Pin configuration
8. Remote sensing
Applications manual
For BRFS/BRDS series
■
Power Good is built-in, internal circuitry as shown in Fig.9.1.1.
■
Power Good pin becomes low state(0.3V max), when output becomes condition
such as overcurrent or output voltage ±12.5%(Typ) outside the set point value.
■
The sink current of Power Good pin is 10mA max.
Fig. 9.1.1
Internal circuitry of
PGOOD
■
When the input voltage is less than the start-up voltage, Power Good pin voltage is undefined.
■
The voltage of Power Good is shown in Fig.9.1.2.
■
Power Good cannot be used in the area of undefined.
Fig. 9.1.2
Voltage of
PGOOD
Fig.9.1.3
BRFS30-I
RC(2V/div) Vin:12V t0: 12ms(Max)
PGOOD
Vout:3.63V
Vout(1V/div) load current:0A
Cin:22uFx4
Cout：300uF
PGOOD(5V/div)
5ms/div
Fig.9.1.4
BRFS50
RC(2V/div) Vin:12V t0: 9ms(Max)
PGOOD
Vout:2.0V
load current:0A
Vout(1V/div) Cin:22uFx4
PGOOD(5V/div)
Cout：200uF
5ms/div
BRFS/BRDS 9-1
9.Power Good
t0
t0
Applications manual
For BRFS/BRDS series
10.1 Series operation
■
Series operation is not possible.
10.2 Parallel operation
1)The basic note
■
Parallel operation is not possible BRFS30/40/60S
*1
.
*1 BRFS40/60S has a parallel option "P".
■
Parallel operation is impossible different series.
■
Total number of units should be no more than 5 pieces.
■
Rating output current at parallel operation
= Rating current per unit × number of unit ×0.9
2)Wiring
■
The wiring of the parallel operation in Fig10.2.1.
■
TRM terminal of slave should be connect to GND(100Ω or less) .
■
Sensing terminal of the slave to open.
■
Connect all SHARE terminal.
■
When controlling the rise time by SEQ is possible to connect all SEQ pin.
■
RC terminal of the slave to connected GND or connect to the master of the
RC terminal.
■
Input power should be supplied from the same power supply.
■
BRFS40-P and BRDS40 is required inductance of more than 0.1uH to the Vin line.
Fig. 10.2.1
Example of wiring
method in parallel
operation
BRFS/BRDS 10-1
10. Series operation / Parallel operation
Applications manual
For BRFS/BRDS series
3)Patterning of the PCB
■
Input and output pattern should be the same width and length.
■
Voltage drop from the output terminal to remote sensing point must be less than 0.2V.
■
ESR from the slave of the output terminal to remote sensing point must be 10mΩ or less
■
Parallel operation should be separated Vin line of each BRxS(Fig 10.2.2)
■
The beat noise reduction of parallel operation, it is effective to put the input CH(Fig 10.2.3)
Fig. 10.2.2
Patterning of the PCB
(a) BRxS40 (b) Other models
Fig. 10.2.3
Beat noise reduction
BRFS/BRDS 10-2
Separate
Vin pattern
Connected
Vin pattern
Must be
0.1uH pattern
or parts
0.1uH
pattern or parts
<Recommend>
<Deprecated>
Applications manual
For BRFS/BRDS series
■
The adjustment of the rise time is possible by connecting C
SEQ
.
Fig.11.1.1
Example of
soft start circuitry
■
When the voltage is applied to the terminal SEQ , the output voltage tracks this voltage
until the output reaches the set-point voltage .
SEQ terminal voltage vs output voltage is calculated the following formula .
C
SEQ
[μF] = (0.284
÷ Vo[V] - 0.06) × T[ms]
(Vo min
≦
Vo ≦ 2.0V)
Vo min : 0.6V(only BRxS40) or 0.7V
C
SEQ
[μF] = (0.284
÷ Vo[V] - 0.047) × T[ms]
(2.0
＜
Vo ≦ 3.63V only BRFS30)
Avoid SEQ terminal voltage is set below the set voltage output by Rtrim , the output voltage
dose not rise to set output voltage . Maximum applicable voltage of terminal SEQ is Vin .
When the function is not used , open terminal SEQ .
Fig.11.1.2
SEQ > Vout setting
Fig.11.1.3
SEQ < Vout setting
(not recommended)
BRFS/BRDS 11-1
11. Sequence
Applications manual
For BRFS/BRDS series
■
With the voltage to input into SEQ pin , you can control a start sequence of plural BRFS/BRDS .
Fig.11.1.4
Example of
sequence control
■
If this function is unnecessary , please make SEQ pin open .
BRFS/BRDS 11-2
(a) The same
(b) The same voltage
(c) The time lag
(a) The same
(c) The time lag
(b) The same voltage
Applications manual
For BRFS/BRDS series
■
Please refer to Fig.12.1.1 ~ Fig.12.1.3 for Package form ( Reel ).
■
The packed number is shown in Table 12.
Table.12.1.1
Packed number
Fig 12.1.1
Taping dimensions
of BRFS30/40/60S
・BRDS40/60S
Fig 12.1.2
Taping dimensions
of BRFS50/50L/60/120・
BRDS60/120
BRFS/BRDS 12-1
2.1
Pin configuration
12. Package Information
Applications manual
For BRFS/BRDS series
Capacity of reel
200 pcs
100 pcs
80 pcs
BRFS30/40・BRDS40
Model
BRFS50/50L/60/120・BRDS60/120
BRFS100/150・BRDS100/150
Fig 12.1.3
Taping dimensions
of BRFS100/150・
BRDS100/150
Fig 12.1.3
Reel dimensions
of BRFS/BRDS
BRFS/BRDS 12-2
Applications manual
For BRFS/BRDS series
Applications Manual
1. Power Supply of Cosel for Intermediate Bus Architecture
CHS and BR 1-1
2. Applications data
CHS and BR 2-1
2.1 Startup Sequence
CHS and BR 2-1
2.2 Efficiency of the combination of CHS and BR
CHS and BR 2-2
2.3 Dynamic Input Response
CHS and BR 2-4
CHS series and BR series
Page
Fig.1.1.1
Intermediate Bus
Architecture
CHS and BR 1-1
POL
Applications manual
For CHS series and BR series
2.1
Pin configuration
1. Power Supply of Cosel for Intermediate Bus Architecture
Isolated OBP
48V
12V
1.0V
3.3V12
V
(Bus Converter)
FPGA
optical module
(Point of load)
●
CHS60 (1/32 brick)
●
CHS80/120(1/16 brick)
●
CHS200/300/380(1/8 brick)
●
CHS400/500/700(1/4 brick)
・
CHS60483R3
・
CHS604805
・
CHS604812
・
CHS80483R3
・
CHS804805
・
CHS804812
・
CHS120483R3
・
CHS1204805
・
CHS1204812
・
CHS200483R3
・
CHS2004805
・
CHS2004812
・
CHS3004810
・
CHS3004812
・
CHS3004812H
・
CHS3804810
・
CHS3804812
・
CHS4004810
・
CHS4004812
・
CHS4004812H
・
CHS5004812
・
CHS7004812
●
BRNS6/12/20
●
BRFS30/40/60S,
BRDS40/60S
●
BRFS100/150,BRDS100/150
CHS series
BR series
POL
●
BRFS50/50L/60/120,
BRDS60/120
Core
Io
2.1 Startup Sequence
2.1.1 CHS4004812 and BRNS20
Fig.2.1.1
Startup Sequence of
CHS4004812
and BRNS20
2.1.2 CHS4004812 and BRFS50
Fig.2.1.2
Startup Sequence of
CHS4004812
and BRFS50
Fig.2.1.3
Measuring method of
Startup Sequence
CHS and BR 2-1
(a) BRNS20 Iout=0%(0A)
2.1
Pin configuration
2. Applications data
(b) BRNS20 Iout=100%(20A)
CHS Vout
(10V/div)
BRNS Vout
(1V/div)
BRNS Iin
(5A/div)
CHS Vout
(10V/div)
BRNS Vout
(1V/div)
BRNS Iin
(5A/div)
5 msec/div 5 msec/div
CHS Vout
(10V/div)
BRFS Vout
(1V/div)
BRFS Iin
(5A/div)
CHS Vout
(10V/div)
BRFS Vout
(1V/div)
BRFS Iin
(5A/div)
5 msec/div 5 msec/div
(a) BRFS50 Iout=0%(0A)
(b) BRFS50 Iout=100%(50A)
100uFx3
100uFx3
22uFx3 100uFx2
22uFx4 100uFx2
1
2 CHS4004812 and BRFS50
CHS40 04812 and BRNS20
No. C3C1 C2Model
CHS
BR
C1
C2
C3
DC48V
12V
1.2V
Load
CHS
+VIN +VOUT
-VIN
-VOUT
GND
+VIN +VOUT
+S
-S
Applications manual
For CHS series and BR series
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