High Density DC-DC Modules
PS50 Series
25 to 50 Watt Wide Input
DC-DC Converters
Single Output
Features
•
25W/50W Isolated Output
•
Efficiency to 85%
•
300KHz Switching Frequency
•
2 : 1 Input Range
•
Regulated Outputs
•
Continuous Short Circuit Protection
•
Five-Sided Metal Case
Only for Nominal Input Voltage 24 & 48 VDC
www.powersolve.co.uk
MODEL
PS50-12S25
PS50-12S33
PS50-12S05
PS50-12S12
PS50-12S15
PS50-12S24
PS50-24S25
PS50-24S33
PS50-24S05
PS50-24S12
PS50-24S15
PS50-24S24
PS50-48S25
PS50-48S33
PS50-48S05
PS50-48S12
PS50-48S15
PS50-48S24
INPUT
VOLTAGE
OUTPUT
VOLTAGE
2.5 VDC
3.3 VDC
5 VDC
12 VDC
15 VDC
24 VDC
2.5 VDC
3.3 VDC
5 VDC
12 VDC
15 VDC
24 VDC
2.5 VDC
3.3 VDC
5 VDC
12 VDC
15 VDC
24 VDC
OUTPUT
CURRENT
10 A
10 A
10 A
4.16 A
3.33 A
2.08 A
10 A
10 A
10 A
4.16 A
3.33 A
2.08 A
10 A
10 A
10 A
4.16 A
3.33 A
2.08 A
INPUT CURRENT
NO LOAD
FULL LOAD
2740 mA
3525 mA
50 mA
5145 mA
4950 mA
4950 mA
4950 mA
1353 mA
1740 mA
50 mA
2540 mA
2450 mA
2450 mA
2419 mA
676 mA
870 mA
50 mA
1250 mA
1220 mA
1220 mA
1209 mA
%EFF
76
78
81
84
84
84
77
79
82
85
85
86
77
79
83
85
85
86
9-18VDC
18-36VDC
36-75VDC
NOTE:
1. Nominal Input Voltage 12, 24 & 48 VDC
1
Powersolve Electronics Ltd, Units 8, 9 and 12 The Paddock, Hambridge Road, Newbury, Berks RG14 5TQ
Tel: 01635 521858 Fax: 01635 523771 Email: sales@powersolve.co.uk
High Density DC-DC Modules
www.powersolve.co.uk
Electrical Specification
INPUT
Input Voltage Range
12V
24V
48V
12Vin power up
power down
24Vin power up
power down
48Vin power up
power down
9-18V
18-36V
36-75V
8.8V
8V
17V
16V
34V
32.5V
Pi Type
+1% max.
<500
μ
sec.
+10%
20mV RMS., max. 75mV pk-pk, max.
30mV RMS., max. 100mV pk-pk, max.
100mV RMS., max. 240mV pk-pk, max.
+0.03%/°C
Continuous
+0.2% max.
+0.2% max.
115-140%
110% ~150% Nominal Output
See Table
1500VDC min.
1500VDC min.
1500VDC min.
10
7
ohm min.
400KHz, Typ.
300KHz, Typ.
-40°C to 100°C
-55°C to +105°C
100°C Typ.
2.28x2.40x0.50 inches
(57.9x61.0x12.7 mm)
Aluminium
Undervoltage lockout
Positive Logic Remote ON/OFF
3.4
Input Filter
OUTPUT
Voltage Accuracy :
Transient Response : 25% Step Load Change
External Trim Adj. Range
Ripple & Noise, 20MHz BW,
2.5V & 3.3V & 5V
12V & 15V
24V
ENVIRONMENTAL
Temperature Coefficient
Short Circuit Protection
Line Regulation
1
Load Regulation
2
Over Voltage Protection trip Range, % Vo nom.
Current Limit
GENERAL
Efficiency
Isolation Voltage
Input/Output
Input/Case
Output/Case
12/24Vin
48Vin
Isolation Resistance
Switching Frequency
Operating case Temperature
Storage Temperature
Thermal Shutdown, Case Temp.
Dimensions
Case Material
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 Dimensions In Inches(mm)
Tolerances
Inches
Millimeters
.XX +.02
.X+.5
.XXX+.01
.XX+.25
Pin
+0.02
+0.5
External Output Trim
0.18 min.
(4.60 )
+SENSE (8)
2*R1.50
TRIM DOWN
TRIM (7)
TRIM (7)
10K ohms
TRIMPOT
+SENSE (8)
Pin Connection
Pin
1
2
3
4
5
6
7
8
9
Function
+Vin
ON/OFF
CASE
-Vin
-Vout
-Sense
Trim
+Sense
+Vout
Mounting Inserts
M3*0.5 Through 4pl.
BOTTOM VIEW
4
5
6
7
2
1
8
9
2.40
(61.00)
Ø0.08
(2.03)
2pl.
1.40
(35.56)
2.00
(50.80)
3
0.60
(15.24)
TRIM UP
-SENSE (6)
-SENSE (6)
Ø0.04
(1.02)
7pl.
1.90
(48.25)
2.28
(57.90)
0.50
(12.70)
SIDE VIEW
Remote ON/OFF Control
ON/OFF (2)
TRIM (7)
HIGH SIGNAL HERE
DISABLE OUTPUT
-VIN (4)
-SENSE (6)
TRIM UP
+SENSE (8)
TRIM DOWN
All Specifications Typical At Nominal Line, Full Load and 25°C Unless Otherwise Noted.
2
Powersolve Electronics Ltd, Units 8, 9 and 12 The Paddock, Hambridge Road, Newbury, Berks RG14 5TQ
Tel: 01635 521858 Fax: 01635 523771 Email: sales@powersolve.co.uk
High Density DC-DC Modules
www.powersolve.co.uk
Application Note
Derating:
The operating case temperature range of the PS50 series is -40°C to +100°C. When operating the PS50 series,
proper derating or cooling is needed.
The following curve is the derating curve of a PS50 without heat sink.
Power Dissipated vs Ambient Temperature and Air Flow
50
45
40
35
Power Disspated, Pd (Watts)
30
25
20
500 ft./min. (2.5 m/s)
15
10
5
0
0
10
20
30
40
50
60
70
80
90
100
600 ft./min. (3.0 m/s)
700 ft./min. (3.5 m/s)
800 ft./min. (4.0 m/s)
Natural 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)
Ambient Temperature, Ta(Deg. C)
Forced Convection Power Derating 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 RATE
Natural Convection 20ft./min. (0.1m/s)
100 ft./min. (0.5m/s)
200 ft./min. (1.0m/s)
300 ft./min. (1.5m/s)
400 ft./min. (2.0m/s)
500 ft./min. (2.5m/s)
600 ft./min. (3.0m/s)
700 ft./min. (3.5m/s)
800 ft./min. (4.0m/s)
TYPICAL Rca
7.12 °C/W
6.21 °C/W
5.17 °C/W
4.29 °C/W
3.64 °C/W
2.96 °C/W
2.53 °C/W
2.37 °C/W
2.19 °C/W
The temperature rise (
T ):
T = Pd * Rca
3
Powersolve Electronics Ltd, Units 8, 9 and 12 The Paddock, Hambridge Road, Newbury, Berks RG14 5TQ
Tel: 01635 521858 Fax: 01635 523771 Email: sales@powersolve.co.uk
High Density DC-DC Modules
www.powersolve.co.uk
Remote ON/OFF Control
The PS50 series allows the user to switch the module on and off electronically with remote on/off feature. The PS50
series are available with "positive logic" or "negative logic" (option).
Logic Table
ON/OFF (2)
Logic State
(Pin 2)
Negative Logic
Positive Logic
Logic Low -
HIGH SIGNAL HERE
DISABLE OUTPUT
-VIN (4)
Switch Closed
Logic High -
Switch Open
Module on
Module off
Module off
Module on
External Output Trimming
Output may optionally be externally trimmed (+10%) with a fixed resistor or an external trimpot as shown.
+SENSE (8)
TRIM DOWN
TRIM (7)
TRIM (7)
10K ohms
TRIMPOT
+SENSE (8)
TRIM UP
-SENSE (6)
-SENSE (6)
External Output
Output Noise
The output noise is measured with 10μF tantalum capacitor and 1.0μF ceramic capacitor across output.
+Vout (9)
Ceramic
1.0µF
Resistor
Load
Solid Tantalum
10µF
-Vout (5)
To
Scope
Output Noise Test Circuit schematic
All Specifications Typical At Nominal Line, Full Load and 25°C Unless Otherwise Noted.
4
Powersolve Electronics Ltd, Units 8, 9 and 12 The Paddock, Hambridge Road, Newbury, Berks RG14 5TQ
Tel: 01635 521858 Fax: 01635 523771 Email: sales@powersolve.co.uk
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