Delta Electronics S36SE User Manual

Delphi S36SE, 17W 1x1 Brick Series DC/DC Power Modules: 18~75V in, 5V/3A out
The Delphi S36SE series, 1x1 sized, 18~75Vin, single output,
isolated DC/DC converters are the latest offering from a world leader
in power systems technology and manufacturing Delta Electronics,
Inc. This product family is available in either a surface mount or
through-hole package and provides up to 17 watts of power or 5A of
output current (3.3V and below) in a standard 1x1 form factor
(1.10”x0.96”x0.33”). The pinout is compatible with the popular
industry standard 1x2 sized products. With creative design
technology and optimization of component placement, these
converters possess outstanding electrical and thermal performance,
as well as extremely high reliability under highly stressful operating
conditions. The S36SE 5V module could provide full output power
without any airflow up to 77°C ambient temperature while keeping the
component junction temperatures under most derating guidelines. All
modules are fully protected from abnormal input/output voltage,
current, and temperature conditions.
FEATURES
High efficiency: 83.5% @5V/3A
Industry standard 1x1 pinout
Size: 27.9x24.4x8.7mm (1.10”x0.96”x0.34”)
Fixed frequency operation
Input UVLO
Output OCP, OVP and OTP
Monotonic startup into normal and pre-bias
loads
Output voltage trim ±10%
2250V isolation and basic insulation
No minimum load required
SMT and Through-hole versions
ISO 9001, TL 9000, ISO 14001, QS9000,
OHSAS18001 certified manufacturing facility
UL/cUL 60950-1 (US & Canada)
Recognized, and TUV (EN60950-1)
certified.
CE mark meets 73/23/EEC and 93/68/EEC
directives
OPTIONS
Positive, negative, or no On/Off
OTP and Output OVP, OCP mode,
Auto-restart (default) or latch-up
Surface mounted pins
APPLICATIONS
Optical Transport
Data Networking
Communications, including Wireless
Servers
and traditional Telecom
DATASHEET DS_S36SE05003_07312008
TECHNICAL SPECIFICATIONS
TA = 25°C, airflow rate = 300 LFM, V
= 48 Vdc, nominal Vout unless otherwise noted.
in
PARAMETER NOTES and CONDITIONS S36SE05003 (Standard)
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous 80 Vdc
Transient(100ms) 100ms 100 Vdc Operating Temperature Refer to Figure 20 for measuring point -40 127 °C Storage Temperature -55 125 °C Input/Output Isolation Voltage 2250 Vdc
INPUT CHARACTERISTICS
Operating Input Voltage 18 75 Vdc Input Under-Voltage Lockout
Turn-On Voltage Threshold 16 17 18 Vdc
Turn-Off Voltage Threshold 15 16 17 Vdc
Lockout Hysteresis Voltage 0.5 1 1.5 Vdc
Maximum Input Current 100% Load, 18Vin 1.1 A No-Load Input Current 15 mA Off Converter Input Current 5 mA Inrush Current (I2t) 0.01 A2s Input Reflected-Ripple Current P-P thru 12µH inductor, 5Hz to 20MHz 8 mA Input Voltage Ripple Rejection 120 Hz 60 dB
OUTPUT CHARACTERISTICS
Output Voltage Set Point Vin=48V, Io=Io.max, Tc=25°C 4.925 5.0 5.075 Vdc Output Voltage Regulation
Over Load Io=Io, min to Io, max ±3 ±10 mV
Over Line Vin=18V to 75V ±3 ±10 mV
Over Temperature Tc=-40°C to 100°C ±50 mV
Total Output Voltage Range Over sample load, line and temperature 4.85 5.15 V Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth
Peak-to-Peak Full Load, 1µF ceramic, 10µF tantalum 80 mV
RMS Full Load, 1µF ceramic, 10µF tantalum 20 mV
Operating Output Current Range 0 3 A Output DC Current-Limit Inception Output Voltage 10% Low 110 120 130 %
DYNAMIC CHARACTERISTICS
Output Voltage Current Transient 48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs
Positive Step Change in Output Current 50% Io.max to 75% Io.max 200 mV
Negative Step Change in Output Current 75% Io.max to 50% Io.max 200 mV
Settling Time (within 1% Vout nominal) 300 us
Turn-On Transient
Start-Up Time, From On/Off Control 16 25 ms
Start-Up Time, From Input 16 25 ms
Maximum Output Capacitance Full load; 5% overshoot of Vout at startup 1000 µF
EFFICIENCY
100% Load 83.5 % 60% Load 83.0 %
ISOLATION CHARACTERISTICS
Input to Output 2250 Vdc Isolation Resistance 10 M Isolation Capacitance 1000 pF
FEATURE CHARACTERISTICS
Switching Frequency 450 kHz ON/OFF Control, Negative Remote On/Off logic
Logic Low (Module On) Von/off -0.7 0.8 V
Logic High (Module Off) Von/off 2 18 V
ON/OFF Control, Positive Remote On/Off logic
Logic Low (Module Off) Von/off -0.7 0.8 V
Logic High (Module On) Von/off 2 18 V
ON/OFF Current (for both remote on/off logic) Ion/off at Von/off=0.0V 0.25 mA
Leakage Current (for both remote on/off logic) Logic High, Von/off=15V 30 uA
Output Voltage Trim Range Output Over-Voltage Protection Over full temp range; 5.75 7.0 V
GENERAL SPECIFICATIONS
MTBF Io=80% of Io, max; Ta=25°C, 300LFM 5.14 M hours Weight 9.0 grams Over-Temperature Shutdown Refer to Figure 20 for measuring point 130 °C
Min. Typ. Max. Units
Across Trim Pin & +Vo or –Vo, Poutmax rated
-10% 10% %
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ELECTRICAL CHARACTERISTICS CURVES
Figure 1: Efficiency vs. load current for minimum, nominal, and
maximum input voltage at 25°C.
1.4
1.2
1
0.8
0.6
INPUT CURRENT(A)
0.4
0.2
0
15 20 25 30 35 40 45 50 55 60 65 70 75
INPUT VOLTAGE(V)
Figure 3: Typical full load input characteristics at room
temperature.
Figure 2: Power dissipation vs. load current for minimum, nominal, and maximum input voltage at 25°C.
Figure 4: (For negative remote on/off logic) Turn-on transient at
full rated load current (5 ms/div). Vin=48V. Top Trace: Vout, 2V/div; Bottom Trace: ON/OFF input, 5V/div.
Figure 5: (For negative remote on/off logic) Turn-on transient at zero load current (5 ms/div). Vin=48V. Top Trace: Vout, 2V/div,
Bottom Trace: ON/OFF input, 5V/div.
DS_S36SE05003_07312008
Figure 6: (For positive remote on/off logic) Turn-on transient at full rated load current (5 ms/div). Vin=48V. Top Trace: Vout, 2V/div; Bottom Trace: ON/OFF input, 5V/div.
3
ELECTRICAL CHARACTERISTICS CURVES (CON.)
A
)
)
Figure 7: (For positive remote on/off logic)Turn-on transient at zero load current (5 ms/div). Vin=48V. Top Trace: Vout, 2V/div; Bottom Trace: ON/OFF input, 5V/div.
Figure 9: Output voltage response to step-change in load current
(50%-75% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF tantalum capacitor and 1µF ceramic capacitor. Top Trace: Vout (200mV/div, 100us/div should be made using a BNC cable (length shorter than 20 inches). Position the load between 51 mm to 76 mm (2 inches to 3 inches)
from the module.
, Bottom Trace: Iout (1A/div). Scope measurement
Figure 8: Output voltage response to step-change in load current
(75%-50% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF tantalum capacitor and 1µF ceramic capacitor. Top Trace: Vout (200mV/div, 100us/div), Bottom Trace: Iout (1 should be made using a BNC cable (length shorter than 20 inches). Position the load between 51 mm to 76 mm (2 inches to 3
inches) from the module.
/div). Scope measurement
Figure 10: Test set-up diagram showing measurement points for Input Terminal Ripple Current and Input Reflected Ripple Current.
Note: Measured input reflected-ripple current with a simulated source Inductance (L
battery impedance. Measure current as shown below.
of 12 μH. Capacitor Cs offset possible
TEST
DS_S36SE05003_07312008
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ELECTRICAL CHARACTERISTICS CURVES
)
E
Figure 11: Input Terminal Ripple Current, i current and nominal input voltage with 12µH source impedance and 33µF electrolytic capacitor (50mA/div, 2us/div)
StripCopper
Vo(+)
10u
1u
, at full rated output
c
SCOPE RESISTIV
LOAD
Figure 12: Input reflected ripple current, i
inductor at nominal input voltage and rated load current (20
mA/div, 2us/div)
, through a 12µH source
s
Vo(-)
Figure 13: Output voltage noise and ripple measurement test setup
6.0
5.0
4.0
3.0
2.0
OUTPUT VOLTAGE (V)
1.0
0.0
0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0
LOAD CURRENT (A)
Figure 14: Output voltage ripple at nominal input voltage and rated load
current (Io=3A) (50 mV/div, 5us/div
capacitor and 10µF tantalum capacitor. Bandwidth: 20 MHz. Scope
measurements should be made using a BNC cable (length shorter than 20
inches). Position the load between 51 mm to 76 mm (2 inches to 3 inches)
from the module
. Load capacitance: 1µF ceramic
Figure 15: Output voltage vs. load current showing typical current limit curves and converter shutdown points
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DESIGN CONSIDERATIONS
Input Source Impedance
The impedance of the input source connecting to the DC/DC power modules will interact with the modules and affect the stability. A low ac-impedance input source is recommended. If the source inductance is more than a few μH, we advise adding a 10 to 100 μF electrolytic capacitor (ESR < 0.7 Ω at 100 kHz) mounted close to the
input of the module to improve the stability.
Layout and EMC Considerations
Delta’s DC/DC power modules are designed to operate in a wide variety of systems and applications. For design assistance with EMC compliance and related PWB layout issues, please contact Delta’s technical support team. An external input filter module is available for easier EMC compliance design. Below is the example of using Delta latest FL75L07 A input filter tested with S36SE series to meet class B in CISSPR 22.
Schematic and Components List
Vin
C1 is 22uF/100V, low ESR Aluminum cap;
C2 is 2.2uF ceramic cap;
C3 is 22nF ceramic capacitor;
FL75L07 A is Delta input EMI filter module.
FL75L07 A
C1C2
S36SE
Series
C3
Load
Test Result
Test result is in compliance with CISPR 22 class B, which is shown as below:
Vin=48V, Po=15W, average mode
Safety Considerations
The power module must be installed in compliance with the spacing and separation requirements of the end-user’s safety agency standard, i.e., UL60950, CAN/CSA-C22.2 No. 60950-00 and EN60950: 2000 and IEC60950-1999, if the system in which the power module is to be used must meet safety agency requirements.
Basic insulation based on 75 Vdc input is provided between the input and output of the module for the purpose of applying insulation requirements when the input to this DC-to-DC converter is identified as TNV-2 or SELV. An additional evaluation is needed if the source is other than TNV-2 or SELV.
When the input source is SELV circuit, the power module meets SELV (safety extra-low voltage) requirements. If the input source is a hazardous voltage which is greater than 60 Vdc and less than or equal to 75 Vdc, for the module’s output to meet SELV requirements, all of the following must be met:
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The input source must be insulated from the ac
mains by reinforced or double insulation.
The input terminals of the module are not operator
accessible.
If the metal baseplate is grounded, one Vi pin and
one Vo pin shall also be grounded.
A SELV reliability test is conducted on the system
where the module is used, in combination with the module, to ensure that under a single fault,
hazardous voltage does not appear at the module’s output.
When installed into a Class II equipment (without grounding), spacing consideration should be given to the end-use installation, as the spacing between the module and mounting surface have not been evaluated.
The power module has extra-low voltage (ELV) outputs when all inputs are ELV.
This power module is not internally fused. To achieve optimum safety and system protection, an input line fuse is highly recommended. The safety agencies require a normal-blow fuse with 5A maximum rating to be installed in the ungrounded lead. A lower rated fuse can be used based on the maximum inrush transient energy and maximum input current.
Soldering and Cleaning Considerations
Post solder cleaning is usually the final board assembly process before the board or system undergoes electrical testing. Inadequate cleaning and/or drying may lower the reliability of a power module and severely affect the finished circuit board assembly test. Adequate cleaning and/or drying is especially important for un-encapsulated and/or open frame type power modules. For assistance on appropriate soldering and cleaning procedures, please contact Delta’s technical support team.
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FEATURES DESCRIPTIONS
Over-Current Protection
The modules include an internal output over-current protection circuit, which will endure current limiting for an unlimited duration during output overload. If the output current exceeds the OCP set point, the modules will automatically shut down, and enter hiccup mode or latch mode, which is optional.
For hiccup mode, the module will try to restart after shutdown. If the overload condition still exists, the module will shut down again. This restart trial will continue until the overload condition is corrected.
For latch mode, the module will latch off once it shutdown. The latch is reset by either cycling the input power or by toggling the on/off signal for one second.
Over-Voltage Protection
The modules include an internal output over-voltage protection circuit, which monitors the voltage on the output terminals. If this voltage exceeds the over-voltage set point, the module will shut down, and enter in hiccup mode or latch mode, which is optional.
For hiccup mode, the module will try to restart after shutdown. If the overload condition still exists, the module will shut down again. This restart trial will continue until the over-voltage condition is corrected.
For latch mode, the module will latch off once it shutdown. The latch is reset by either cycling the input power or by toggling the on/off signal for one second.
Over-Temperature Protection
The over-temperature protection consists of circuitry that provides protection from thermal damage. If the temperature exceeds the over-temperature threshold the module will shut down, and enter in hiccup mode or latch mode, which is optional.
For auto-restart mode, the module will monitor temperature after shut down. Once the temperature is within the specification, the module will be auto-restarted.
For latch mode, the module will latch off once it shutdown. The latch is reset by either cycling the input power or by toggling the on/off signal for one second.
Remote On/Off
The remote on/off feature on the module can be either negative or positive logic. Negative logic turns the module on during a logic low and off during a logic high. Positive logic turns the modules on during a logic high and off during a logic low.
Remote on/off can be controlled by an external switch between the on/off terminal and the Vi(-) terminal. The switch can be an open collector or open drain.
For negative logic if the remote on/off feature is not used, please short the on/off pin to Vi(-). For positive logic if the remote on/off feature is not used, please leave the on/off pin floating.
ON/OFF
ON/OFF
Vi(-)
Vi(-)
Vi(+)
Vi(+)
Vo(-)
Vo(-)
Trim
Trim
Vo(+)
Vo(+)
R
R
Load
Load
Figure 16: Remote on/off implementation
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FEATURES DESCRIPTIONS (CON.)
Output Voltage Adjustment
To increase or decrease the output voltage set point, the modules may be connected with an external resistor between the TRIM pin and either the Vo(+) or Vo(-). The TRIM pin should be left open if this feature is not used.
ON/OFF
ON/OFF
Vi (-)
Vi (-)
Vi (+)
Vi (+)
Vo (-)
Vo (-)
Trim
Trim
Vo (+)
Vo (+)
R
R
trim-up
trim-up
R
R
Load
Load
Vo (-)
Vo (-)
ON/OFF
ON/OFF
ON/OFF
Vi (-)
Vi (-)
Vi (-)
Vi (+)
Vi (+)
Vi (+)
Figure 17: Circuit configuration for trim-down (decrease
output voltage)
Vo (-)
Trim
Trim
Trim
Vo (+)
Vo (+)
Vo (+)
R
R
R
trim-d o w n
trim-d o w n
trim-d o w n
R
R
Load
Load
If the external resistor is connected between the TRIM and Vo(+) pins, the output voltage set point decreases (Fig. 17). The external resistor value required to obtain an output voltage change from 5V to the desired Vo_adj is defined as:
Rtrim_down
Vo_adj 2.5( ) 5110
5 Vo_adj
2050
Ex. When Trim-down -10%
Vo_adj=5V×(1-10%)=4.5V
Rtrim_down
Rtrim_down 1.839 10
4.5 2.5( ) 5110 5 4.5
4
ohm
×=
2050
Figure 18: Circuit configuration for trim-up (increase output
voltage)
If the external resistor is connected between the TRIM and Vo(-) the output voltage set point increases (Fig.
18). The external resistor value required to obtain an output voltage change from 5V to the desired Vo_adj is defined as:
Rtrim_up
2.5 5110
Vo_adj 5
2050
Ex. When Trim-up +10%
Vo_adj=5V×(1+10%)=5.5V
Rtrim_up
Rtrim_up 2.35 10
2.5 5110
5.5 5
4
×=
2050
ohm
When using trim function, the output voltage of the module is usually increased, which increases the power output of the module with the same output current.
Care should be taken to ensure that the maximum output power of the module remains at or below the maximum rated power.
DS_S36SE05003_07312008
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THERMAL CONSIDERATIONS
A
Y
Thermal management is an important part of the system design. To ensure proper, reliable operation, sufficient cooling of the power module is needed over the entire temperature range of the module. Convection cooling is usually the dominant mode of heat transfer.
Hence, the choice of equipment to characterize the thermal performance of the power module is a wind tunnel.
Thermal Testing Setup
Delta’s DC/DC power modules are characterized in heated vertical wind tunnels that simulate the thermal environments encountered in most electronics equipment. This type of equipment commonly uses vertically mounted circuit cards in cabinet racks in which the power modules are mounted.
The following figure shows the wind tunnel characterization setup. The power module is mounted on a test PWB and is vertically positioned within the wind tunnel. The space between the neighboring PWB and the top of the power module is constantly kept at
6.35mm (0.25’’).
FACING PWB
PWB
MODULE
Thermal Derating
Heat can be removed by increasing airflow over the module. To enhance system reliability, the power module should always be operated below the maximum operating temperature. If the temperature exceeds the maximum module temperature, reliability of the unit may be affected.
THERMAL CURVES
Figure 20: Temperature measurement location
The allowed maximum hot spot temperature is defined at 127
Output Current(A)
3.5
3.0
2.5
2.0
1.5
S36SE05003(Standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin = 24V (Either Orientation)
Natural
Convection
100LFM
.
AIR VELOCIT AND AMBIENT
TEMPERATURE
MEASURED BELOW
THE MODULE
IR FLOW
Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches)
50.8 (2.0”)
12.7 (0.5”)
Figure 19: Wind tunnel test setup
DS_S36SE05003_07312008
1.0
0.5
0.0 60 65 70 75 80 85
Ambient Temperature (℃)
Figure 21: Output current vs. ambient temperature and air
velocity@ Vin=24V (Either Orientation)
Output Current(A)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0 60 65 70 75 80 85
S36SE05003(Standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin = 48V (Either Orientation)
Natural
Convection
100LFM
Ambient Temperature (℃)
Figure 22: Output current vs. ambient temperature and air
velocity@ V
=48V (Either Orientation)
in
10
PICK AND PLACE LOCATION SURFACE-MOUNT TAPE & REEL
RECOMMENDED PAD LAYOUT (SMD)
DS_S36SE05003_07312008
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LEADED (Sn/Pb) PROCESS RECOMMEND TEMPERATURE PROFILE
Peak temp.
210~230°C 5sec.
Cooling down rate <3°C /sec.
Over 200°C
40~50sec.
300 60 0 120 180 240
Temperature (°C )
250
150
100
50
Ramp-up temp.
0.5~3.0°C /sec.
2nd Ramp-up temp.
Pre-heat temp.
140~180°C 60~120 sec.
Time ( sec. )
1.0~3.0°C /sec.
Note: The temperature refers to the pin of S36SE, measured on the pin +Vout joint.
LEAD FREE (SAC) PROCESS RECOMMEND TEMPERATURE PROFILE
217
200
.
Peak Temp. 240 ~ 245
Ramp down max. 4℃/sec.
Temp
150
Ramp up max. 3℃/sec.
Preheat time
100~140 sec.
Time Limited 90 sec. above 217
25
Time
Note: The temperature refers to the pin of S36SE, measured on the pin +Vout joint.
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MECHANICAL DRAWING
Surface-mount module Through-hole module
Pin No. Name Function
1 2 3 4 5 6
+Vin
-Vin ON/OFF (Optional)
-Vout TRIM (Optional)
+Vout
Positive input voltage Negative input voltage Remote ON/OFF (Optional) Negative output voltage Output voltage trim (Optional) Positive output voltage
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PART NUMBERING SYSTEM
S 36 S E 050 03 N R F A
Product
Type
S - Small
Power
Input
Voltage
18V~75V S - Single 1x1, 17W 050 - 5.0V 03 - 3A
Number of
Outputs
Product
Series
Output
Voltage
Output
Current
ON/OFF Logic
N - Negative
(Default)
P - Positive
E - No remote
on/off control
Pin
Length/Type
R - 0.170”
(Default)
N - 0.145”
K - 0.110”
M - SMD
Option Code
F- RoHS 6/6
(Lead Free)
MODEL LIST
MODEL NAME INPUT OUTPUT EFF @ 100% LOAD
S36SE3R305NRFB 18V~75V 1.3A 3.3V 5A 86.5%
S36SE05003NRFB 18V~75V 1.1A 5.0V 3A 83.5%
S36SE12001NRFB 18V~75V 1.1A 12V 1.3A 87.0%
Note:
1. Default remote on/off logic is negative;
2. Default pin length is 0.170”;
3. Default OTP and output OVP, OCP mode is auto-restart
4. For different options, please refer to part numbering system above or contact your local sales office.
A - No trim pin
B - With trim pin
(Default)
CONTACT: www.delta.com.tw/dcdc
USA:
Telephone: East Coast: (888) 335 8201 West Coast: (888) 335 8208 Fax: (978) 656 3964 Email: DCDC@delta-corp.com
Europe:
Phone: +41 31 998 53 11 Fax: +41 31 998 53 53 Email: DCDC@delta-es.com
Asia & the rest of world:
Telephone: +886 3 4526107 ext 6220 Fax: +886 3 4513485 Email: DCDC@delta.com.tw
WARRANTY
Delta offers a two (2) year limited warranty. Complete warranty information is listed on our web site or is available upon request from Delta.
Information furnished by Delta is believed to be accurate and reliable. However, no responsibility is assumed by Delta for its use, nor for any infringements of patents or other rights of third parties, which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Delta. Delta reserves the right to revise these specifications at any time, without notice
.
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