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High Density DC-DC Modules
PS50W Series
25 - 50 Watt 4:1 Input
DC-DC Converters
Single Output
Features
25W-50W Isolated Output
•
• Efficiency to 84%
• 300KHz Switching Frequency
• 4 : 1 Input Range
• Regulated Outputs
• Continuous Short Circuit Protection
• Five-Sided Metal Case
• Industry Standard Half-Brick Package
www.powersolve.co.uk
MODEL INPUT OUTPUT OUTPUT INPUT CURRENT %EFF
VOLTAGE VOLTAGE CURRENT NO LOAD FULL LOAD
PS50W-24S33 3.3VDC 10A 1785mA 77
PS50W-24S05 5VDC 10A 2570mA 81
PS50W-24S12 9-36 VDC 12VDC 4.16A 50 mA 2510mA 83
PS50W-24S15 15VDC 3.33A 2510mA 83
-24S24
PS50W
PS50W-48S33 3.3VDC 10A 880mA 78
PS50W-48S05 5VDC 10A 1270mA 82
PS50W-48S12 18-75 VDC 12VDC 4.16A 50 mA 1240mA 84
PS50W-48S15 15VDC 3.33A 1240mA 84
PS50W
-48S24 24VDC 2.08A 1240mA 84
NOTE: 1. Nominal Input Voltage 24, 48VDC
24VDC 2.08A 2510mA 83
Powersolve Electronics Ltd. Units 8A, Arnhem Road, Newbury, RG14 5RU. England
Tel:01635 521858 Fax: 01635 523771 Email: [email protected]
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2.40
(61.00)
Ø0.08
(2.03)
2pl.
0.50
(12.70)
0.18 min.
(4.60 )
2*R1.50
Mounting Inserts
M3*0.5 Through 4pl.
2.00
(50.80)
1.40
(35.56)
0.60
(15.24)
4
3
2
1
5
6
7
8
9
1.90
(48.25)
2.28
(57.90)
Ø0.04
(1.02)
7pl.
A
ll Dimensions In Inches(mm)
Pin
Tolerances Inches .XX +.02 .XXX +.01 +0.02
M
illimeters .X+.5 .XX+.25 +0.5
BOTTOM VIEW
SIDE VIEW
2.40
(61.00)
Ø0.08
(2.03)
2pl.
0.50
(12.70)
0.18 min.
(4.60 )
2*R1.50
Mounting Inserts
M3*0.5 Through 4pl.
2.00
(50.80)
1.40
(35.56)
0.60
(15.24)
4
3
2
1
5
6
7
8
9
1
.90
(48.25)
2.28
(57.90)
Ø0.04
(1.02)
7pl.
A
ll Dimensions In Inches(mm)
-SENSE (6)
TRIM UP
TRIM (7)
TRIM DOWN
+SENSE (8)
-SENSE (6)
+SENSE (8)
TRIM (7)
10K ohms
TRIMPOT
HIGH SIGNAL HERE
DISABLE OUTPUT
ON/OFF (2)
-VIN (4)
P
in
Tolerances Inches .XX +.02 .XXX +.01 +0.02
M
illimeters .X+.5 .XX+.25 +0.5
Remote ON/OFF Control
BOTTOM VIEW
SIDE VIEW
0.50
(12.70)
0.18 min.
(4.60 )
2*R1.50
-SENSE (6)
TRIM UP
TRIM (7)
TRIM DOWN
+SENSE (8)
-SENSE (6)
+SENSE (8)
TRIM (7)
10K ohms
TRIMPOT
High Density DC-DC Modules
www.powersolve.co.uk
Electrical Specification
INPUT
nput Voltage Range 24V 9-36V
I
ndervoltage lockout 24Vin power up 8.8V
U
p
48Vin power up 17V
Positive Logic Remote ON/OFF
nput Filter Pi Type
I
UTPUT
O
oltage Accuracy : +1% max.
V
ransient Response : 25% Step Load Change <500µsec.
T
3.4
power down 16V
External Trim Adj. Range +10%
Ripple & Noise, 20MHz BW 3.3V & 5V 40mV RMS., max. 100mV pk-pk, max.
NVIRONMENTAL
E
emperature Coefficient +0.03%/°C
T
Short Circuit Protection Continuous
Line Regulation
Load Regulation
ver Voltage Protection trip Range, % Vo nom. 115-140%
O
urrent Limit 110% ~160% Nominal Output
C
ENERAL
G
1
2
Efficiency See Table
Isolation Voltage Input/Output 1500VDC min.
Output/Case 1500VDC min.
Isolation Resistance 107ohm min.
Switching Frequency 300KHz, Typ.
Operating case Temperature -40°C to 100°C
Storage Temperature -55°C to +105°C
Thermal Shutdown, Case Temp. 100°C Typ.
Dimensions 2.82x2.40x0.50 inches
Case Material Aluminium
8V 18-75V
4
ower down 8V
12V & 15V 60mV RMS., max. 150mV pk-pk, max.
4V 100mV RMS., max. 240mV pk-pk, max.
2
+0.2% max.
+0.2% max.
nput/Case 1500VDC min.
I
(57.9x61.0x12.7 mm)
NOTE:
1. Measured From High Line to Low Line. 2. Measured From Full Load to Zero Load. 3. Logic Compatibility Open Collector Ref. to -Input, Module ON - Open Circuit, Module OFF - < 0.8Vdc 4. Suffix "N" to the Model
Number with Negative Logic Remote ON/OFF.
All Specifications Typical At Nominal Line, Full Load and 25°C Unless Otherwise Noted.
Pin Connection
Pin Function
1
2 ON/OFF
3 CASE
4
5
6 -Sense
7 Trim
8 +Sense
Powersolve Electronics Ltd. Units 8A, Arnhem Road, Newbury, RG14 5RU. England
Tel:01635 521858 Fax: 01635 523771 Email: [email protected]
9 +Vout
External Output Trim
+Vin
-V
-V
in
out
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Forced Convection Power Derating without Heat Sink
HIGH SIGNAL HERE
DISABLE OUTPUT
Power Dissipated vs Ambient Temperature and Air Flow
15
10
5
0
A
mbient Temperature, Ta(Deg. C)
Power Disspated, Pd (Watts)
0
1
020
30
40 50
60
70 80 90
100
20
2
5
30
3
5
4
0
45
5
0
N
atural Convection
20 ft./min. (0.1 m/s)
100 ft./min. (0.5 m/s)
200 ft./min. (1.0 m/s)
300 ft./min. ( 1.5 m/s)
400 ft./min. (2.0 m/s)
500 ft./min. (2.5 m/s)
600 ft./min. (3.0 m/s)
700 ft./min. (3.5 m/s)
800 ft./min. (4.0 m/s)
High Density DC-DC Modules
www.powersolve.co.uk
Application Note
Derating:
The operating case temperature range of the PS50W series is -40°Cto +100°C. When operating the PS50W series,
proper derating or cooling is needed.
Following is the derating curve of PS50W without heat sink.
Where:
The power dissipation (Pd):
Pd = Pi - Po = Po (1-n) /n
The thermal resistance are listed below:
Chart of Thermal Resistance vs Air Flow:
AIR FLOW RA
Natural Convection 20ft./min. (0.1m/s) 7.12 °C/W
100 ft./min. (0.5m/s) 6.21 °C/W
200 ft./min. (1.0m/s)
300 ft./min. (1.5m/s) 4.29 °C/W
400 ft./min. (2.0m/s) 3.64 °C/W
500 ft./min. (2.5m/s) 2.96 °C/W
600 ft./min. (3.0m/s) 2.53 °C/W
700 ft./min. (3.5m/s) 2.37 °C/W
800 ft./min. (4.0m/s)
The temperatur
TE
e rise (
T ):
T = Pd * Rca
TYPICAL Rca
C/W
°
5.17
C/W
°
2.19
Powersolve Electronics Ltd. Units 8A, Arnhem Road, Newbury, RG14 5RU. England
Tel:01635 521858 Fax: 01635 523771 Email: [email protected]
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H
IGH SIGNAL HERE
D
ISABLE OUTPUT
O
N/OFF (2)
-VIN (4)
Negative
Logic Table
Logic Positive Logic
Logic Low -
Switch Closed
Logic High -
Switch Open
Module on
Module off
Module off
Module on
Logic State
(
Pin 2)
O
N/OFF (2)
-VIN (4)
+SENSE (8)
-SENSE (6)
-SENSE (6)
TRIM (7)
TRIM (7)
+SENSE (8)
TRIM DOWN
10K ohms
TRIMPOT
TRIM UP
Negative
Logic Table
Logic Positive Logic
Logic Low -
S
witch Closed
Logic High -
Switch Open
Module on
Module off
Module off
Module on
Logic State
(Pin 2)
External Output
H
IGH SIGNAL HERE
D
ISABLE OUTPUT
O
N/OFF (2)
-VIN (4)
+
SENSE (8)
-SENSE (6)
-SENSE (6)
TRIM (7)
TRIM (7)
+SENSE (8)
TRIM DOWN
10K ohms
TRIMPOT
TRIM UP
+Vout (9)
-Vout (5)
Ceramic
1.0µF
Solid tantalum
10µF
To
Scope
Resistor
Load
Negative
Logic Table
Logic Positive Logic
Logic Low -
S
witch Closed
Logic High -
Switch Open
Module on
M
odule off
Module off
Module on
L
ogic State
(Pin 2)
External Output
Output Noise Test Circuit schematic
High Density DC-DC Modules
www.powersolve.co.uk
Remote ON/OFF Control
The PS50W Series allows the user to switch the module on and off electronically with remote on/off feature.
The PS50W Series are available in "positive logic" or "negative logic" (option).
External Output Trimming
Output may optionally be externally trimmed (+10%) with a fixed resistor or an external trimpot as shown.
Output Noise
The output noise is measur
ed with 10
µF tantalum capacitor and 1.0µF ceramic capacitor acr
oss output.
All Specifications T
C Unless Other
ypical At Nominal Line, Full Load and 25
Powersolve Electronics Ltd. Units 8A, Arnhem Road, Newbury, RG14 5RU. England
Tel:01635 521858 Fax: 01635 523771 Email: [email protected]
°
wise Noted.
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