PXF40xxSxx-Single Output DC/DC Converters
9 to 18 Vdc , 18 to 36 Vdc or 36 to 75 Vdc input, 1.5 to 15 Vdc Single Output, 40W
Features
Single output current up to 8A
40 watts maximum output power
2:1 wide input voltage range
Six-sided continuous shield
High efficiency up to 90%
Low profile:2.002.000.40 inch (50.850.810.2 mm )
Fixed switching frequency
RoHS directive compliant
Input to output isolation: 1600Vdc,min
Over-temperature protection
Input under-voltage protection
Output over-voltage protection
Over-current protection, auto-recovery
Output short circuit protection, auto-recovery
Remote ON/OFF
APPLICATIONS
Wireless Network
Telecom/Datacom
Industry Control System
Measurement
Semiconductor Equipment
Options
Heat sinks available for extended operation
General Description
The PXF40-xxSxx series offers 40 watts of output power from a 2 x 2 x 0.4 inch package. It has a 2:1 wide input
voltage range of 9-18VDC, 18-36VDC or 36-75VDC and features 1600VDC of isolation, short-circuit and
over-voltage protection.
Table of Contents
Absolute Maximum Rating
Output Specification
Input Specification
General Specification
Characteristic Curves
Test Configurations
EMC Considerations
Input Source Impedance
Output Over Current Protection
Output Over Voltage Protection
Short Circuit Protection
Thermal Consideration
P2
P2
P3
P5
P6
P48
P49
P51
P51
P52
P52
P52
Heat Sink Consideration
Remote ON/OFF Control
Mechanical Data
Recommended Pad Layout
Output Voltage Adjustment
Remote Sense Application Circuit
Soldering and Reflow Consideration
Packaging Information
Part Number Structure
Safety and Installation Instructions
MTBF and Reliability
P53
P54
P55
P56
P57
P59
P59
P60
P61
P62
P62
DataSheet
40W, Single Output
Absolute Maximum Rating
Parameter
Model
Input Voltage
Continuous
Transient (100ms)
Operating Ambient Temperature (with derating)
Operating Case Temperature
Storage Temperature
Min
12Sxx
24Sxx
48Sxx
12Sxx
24Sxx
48Sxx
All
All
All
Max
Unit
18
36
75
36
50
100
85
100
105
-40
-55
Vdc
°C
°C
°C
Output Specification
Parameter
Output Voltage
(Vin = Vin(nom) ; Full Load ; TA=25°C)
Voltage Adjustability
Model
Min
Typ
Max
Unit
xxS1P5
1.485
1.5
1.515
xxS1P8
1.782
1.8
1.818
xxS2P5
2.475
2.5
2.525
xxS3P3
3.267
3.3
3.333
xxS05
4.95
5
5.05
xxS12
11.88
12
12.12
xxS15
14.85
15
15.15
All
-10
+10
%
All
-0.5
+0.5
%
-0.5
+0.5
Vdc
Output Regulation
Line (Vin(min) to Vin(max) at Full Load)
Load (Min. to 100% of Full Load)
Output Ripple & Noise
xxS1P5
50
Peak-to-Peak (20MHz bandwidth)
xxS1P8
50
(Measured with a 0.1μF/50V MLCC)
xxS2P5
50
xxS3P3
50
xxS05
50
xxS12
75
xxS15
75
Temperature Coefficient
Output Voltage Overshoot
(Vin(min) to Vin(max) ; Full Load ; TA=25°C)
All
-0.02
mVp-p
+0.02
%/°C
3
% Vo
All
0
All
250
mV
All
250
μS
Dynamic Load Response
(Vin = Vin(nom) ; TA=25°C)
Load step change from
75% to 100% or 100 to 75% of Full Load
Peak Deviation
Setting Time (VOUT- 10% peak deviation)
Output Current
xxS1P5
0
8000
xxS1P8
0
8000
xxS2P5
0
8000
xxS3P3
0
8000
xxS05
0
8000
xxS12
0
3333
xxS15
0
2666
mA
VER:00 Page 2 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Output Specification(Continued)
Parameter
Output Over Voltage Protection
(Zener diode clamp)
Model
Min
Typ
xxS1P5
3.9
xxS1P8
3.9
xxS2P5
3.9
xxS3P3
3.9
xxS05
6.2
xxS12
15
xxS15
18
Output Over Current Protection
All
Output Short Circuit Protection
All
Max
Unit
Vdc
150
% FL.
Hiccup, automatics recovery
Input Specification
Parameter
Operating Input Voltage
Input Current
(Maximum value at Vin = Vin(nom); Full Load)
Model
Min
Typ
Max
12Sxx
9
12
18
24Sxx
18
24
36
48Sxx
36
48
75
12S1P5
1250
12S1P8
1538
12S2P5
2083
12S3P3
2683
12S05
4065
12S12
4065
12S15
4015
24S1P5
649
24S1P8
759
24S2P5
1016
24S3P3
1325
24S05
1961
24S12
2048
24S15
1985
48S1P5
321
48S1P8
375
48S2P5
508
48S3P3
655
48S05
969
48S12
1000
48S15
992
Unit
Vdc
mA
VER:00 Page 3 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Input Specification (Continued)
Parameter
Input Standby Current
(Typical value at Vin = Vin(nom); No Load)
Under Voltage Lockout Turn-on Threshold
Model
Min
Typ
12S1P5
110
12S1P8
110
12S2P5
110
12S3P3
175
12S05
225
12S12
255
12S15
310
24S1P5
40
24S1P8
40
24S2P5
40
24S3P3
60
24S05
80
24S12
70
24S15
85
48S1P5
25
48S1P8
25
48S2P5
25
48S3P3
35
48S05
40
48S12
50
48S15
50
Input Reflected Ripple Current
(5 to 20MHz, 12μH Source Impedance)
Unit
mA
12Sxx
9
24Sxx
17.8
48Sxx
Under Voltage Lockout Turn-off Threshold
Max
Vdc
36
12Sxx
8
24Sxx
16
48Sxx
34
All
40
Vdc
mAp-p
Start Up Time
(Vin = Vin(nom) and Constant Resistive Load)
Power Up
All
25
Remote ON/OFF
25
Remote ON/OFF Control
Vdc
(The ON/OFF pin voltage is referenced to -VIN)
Positive Logic
DC-DC ON
mS
All
DC-DC OFF
3.5
12
0
Remote Off Input Current
All
Input Current of Remote Control Pin
All
1.2
2.5
-0.5
mA
0.5
mA
VER:00 Page 4 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
General Specification
Parameter
Efficiency
(Vin = Vin(nom) ; Full Load ; TA=25°C)
Model
Min
Typ
12S1P5
84
12S1P8
82
12S2P5
84
12S3P3
86
12S05
86
12S12
86
12S15
87
24S1P5
81
24S1P8
83
24S2P5
86
24S3P3
87
24S05
89
24S12
88
24S15
89
48S1P5
82
48S1P8
84
48S2P5
86
48S3P3
88
48S05
90
48S12
89
48S15
89
Max
Unit
%
Isolation Voltage
Input to Output
All
Input to Case, Output to Case
Vdc
1600
1600
Isolation Resistance
All
1
GΩ
Isolation Capacitance
All
Switching Frequency
All
300
KHz
Weight
All
60
g
All
1.398×106
3.585×105
hours
All
115
°C
1000
pF
MTBF
Bellcore TR-NWT-000332, TC=40°C
MIL-HDBK-217F
Over Temperature Protection
VER:00 Page 5 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves
All test conditions are at 25°C.The figures are identical for PXF40-12S1P5 PRODUCT NOT AVAILABLE
Efficiency Versus Output Current
Efficiency Versus Input Voltage. Full Load
Power Dissipation Versus Output Current
Derating OutputCurrentVersusAmbientTemperature andAirflow
Vin = Vin(nom)
Derating OutputCurrentVersusAmbientTemperature with Heat-Sink
andAirflow, Vin = Vin(nom)
VER:00 Page 6 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-12S1P5 PRODUCT NOT AVAILABLE
Typical Output Ripple and Noise.
Transient Response to Dynamic Load Change from
Vin = Vin(nom), Full Load
100% to 75% to 100% of Full Load ; Vin = Vin(nom)
Typical Input Start-Up and Output Rise Characteristic
Using ON/OFF Voltage Start-Up and Vo Rise Characteristic
Vin = Vin(nom), Full Load
Vin = Vin(nom), Full Load
Conduction Emission of EN55022 Class A
Conduction Emission of EN55022 Class B
Vin = Vin(nom), Full Load
Vin = Vin(nom), Full Load
VER:00 Page 7 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-12S1P8
Efficiency Versus Output Current
Efficiency Versus Input Voltage. Full Load
PRODUCT NOT AVAILABLE
Power Dissipation Versus Output Current
Derating OutputCurrentVersusAmbientTemperature andAirflow
Vin=Vin(nom)
Derating OutputCurrentVersusAmbientTemperature with Heat-Sink
andAirflow, Vin = Vin(nom)
VER:00 Page 8 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-12S1P8
Typical Output Ripple and Noise.
PRODUCT NOT AVAILABLE
Transient Response to Dynamic Load Change from
Vin=Vin(nom), Full Load
100% to 75% to 100% of Full Load ; Vin=Vin(nom)
Typical Input Start-Up and Output Rise Characteristic
Using ON/OFF Voltage Start-Up and Vo Rise Characteristic
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
Conduction Emission of EN55022 Class A
Conduction Emission of EN55022 Class B
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
VER:00 Page 9 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-12S2P5
Efficiency Versus Output Current
Efficiency Versus Input Voltage. Full Load
Power Dissipation Versus Output Current
Derating OutputCurrentVersusAmbientTemperature andAirflow
Vin=Vin(nom)
Derating OutputCurrentVersusAmbientTemperature with Heat-Sink
andAirflow, Vin = Vin(nom)
VER:00 Page 10 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-12S2P5
Typical Output Ripple and Noise.
Transient Response to Dynamic Load Change from
Vin=Vin(nom), Full Load
100% to 75% to 100% of Full Load ; Vin=Vin(nom)
Using ON/OFF Voltage Start-Up and Vo Rise Characteristic
Typical Input Start-Up and Output Rise Characteristic
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
Conduction Emission of EN55022 Class A
Conduction Emission of EN55022 Class B
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
VER:00 Page 11 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-12S3P3
Efficiency Versus Output Current
Efficiency Versus Input Voltage. Full Load
Power Dissipation Versus Output Current
Derating OutputCurrentVersusAmbientTemperature andAirflow
Vin=Vin(nom)
Derating OutputCurrentVersusAmbientTemperature with Heat-Sink
andAirflow, Vin = Vin(nom)
VER:00 Page 12 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-12S3P3
Typical Output Ripple and Noise.
Transient Response to Dynamic Load Change from
Vin=Vin(nom), Full Load
100% to 75% to 100% of Full Load ; Vin=Vin(nom)
Typical Input Start-Up and Output Rise Characteristic
Using ON/OFF Voltage Start-Up and Vo Rise Characteristic
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
Conduction Emission of EN55022 Class A
Conduction Emission of EN55022 Class B
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
VER:00 Page 13 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-12S05
Efficiency Versus Output Current
Efficiency Versus Input Voltage. Full Load
Power Dissipation Versus Output Current
Derating OutputCurrentVersusAmbientTemperature andAirflow
Vin=Vin(nom)
Derating OutputCurrentVersusAmbientTemperature with Heat-Sink
andAirflow, Vin = Vin(nom)
VER:00 Page 14 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-12S05
Typical Output Ripple and Noise.
Transient Response to Dynamic Load Change from
Vin=Vin(nom), Full Load
100% to 75% to 100% of Full Load ; Vin=Vin(nom)
Typical Input Start-Up and Output Rise Characteristic
Using ON/OFF Voltage Start-Up and Vo Rise Characteristic
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
Conduction Emission of EN55022 Class A
Conduction Emission of EN55022 Class B
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
VER:00 Page 15 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-12S12
Efficiency Versus Output Current
Efficiency Versus Input Voltage. Full Load
Power Dissipation Versus Output Current
Derating OutputCurrentVersusAmbientTemperature andAirflow
Vin=Vin(nom)
Derating OutputCurrentVersusAmbientTemperature with Heat-Sink
andAirflow, Vin = Vin(nom)
VER:00 Page 16 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-12S12
Typical Output Ripple and Noise.
Transient Response to Dynamic Load Change from
Vin=Vin(nom), Full Load
100% to 75% to 100% of Full Load ; Vin=Vin(nom)
Typical Input Start-Up and Output Rise Characteristic
Using ON/OFF Voltage Start-Up and Vo Rise Characteristic
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
Conduction Emission of EN55022 Class A
Conduction Emission of EN55022 Class B
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
VER:00 Page 17 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-12S15
Efficiency Versus Output Current
Efficiency Versus Input Voltage. Full Load
Power Dissipation Versus Output Current
Derating OutputCurrentVersusAmbientTemperature andAirflow
Vin=Vin(nom)
Derating OutputCurrentVersusAmbientTemperature with Heat-Sink
andAirflow, Vin = Vin(nom)
VER:00 Page 18 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-12S15
Typical Output Ripple and Noise.
Transient Response to Dynamic Load Change from
Vin=Vin(nom), Full Load
100% to 75% to 100% of Full Load ; Vin=Vin(nom)
Typical Input Start-Up and Output Rise Characteristic
Using ON/OFF Voltage Start-Up and Vo Rise Characteristic
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
Conduction Emission of EN55022 Class A
Conduction Emission of EN55022 Class B
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
VER:00 Page 19 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-24S1P5 PRODUCT NOT AVAILABLE
Efficiency Versus Output Current
Efficiency Versus Input Voltage. Full Load
Power Dissipation Versus Output Current
Derating OutputCurrentVersusAmbientTemperature andAirflow
Vin=Vin(nom)
Derating OutputCurrentVersusAmbientTemperature with Heat-Sink
andAirflow, Vin = Vin(nom)
VER:00 Page 20 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-24S1P5 PRODUCT NOT AVAILABLE
Typical Output Ripple and Noise.
Transient Response to Dynamic Load Change from
Vin=Vin(nom), Full Load
100% to 75% to 100% of Full Load ; Vin=Vin(nom)
Typical Input Start-Up and Output Rise Characteristic
Using ON/OFF Voltage Start-Up and Vo Rise Characteristic
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
Conduction Emission of EN55022 Class A
Conduction Emission of EN55022 Class B
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
VER:00 Page 21 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-24S1P8
Efficiency Versus Output Current
Efficiency Versus Input Voltage. Full Load
Power Dissipation Versus Output Current
Derating OutputCurrentVersusAmbientTemperature andAirflow
Vin=Vin(nom)
Derating OutputCurrentVersusAmbientTemperature with Heat-Sink
andAirflow, Vin = Vin(nom)
VER:00 Page 22 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-24S1P8
Typical Output Ripple and Noise.
Transient Response to Dynamic Load Change from
Vin=Vin(nom), Full Load
100% to 75% to 100% of Full Load ; Vin=Vin(nom)
Typical Input Start-Up and Output Rise Characteristic
Using ON/OFF Voltage Start-Up and Vo Rise Characteristic
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
Conduction Emission of EN55022 Class A
Conduction Emission of EN55022 Class B
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
VER:00 Page 23 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-24S2P5
Efficiency Versus Output Current
Efficiency Versus Input Voltage. Full Load
Power Dissipation Versus Output Current
Derating OutputCurrentVersusAmbientTemperature andAirflow
Vin=Vin(nom)
Derating OutputCurrentVersusAmbientTemperature with Heat-Sink
andAirflow, Vin = Vin(nom)
VER:00 Page 24 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-24S2P5
Typical Output Ripple and Noise.
Transient Response to Dynamic Load Change from
Vin=Vin(nom), Full Load
100% to 75% to 100% of Full Load ; Vin=Vin(nom)
Typical Input Start-Up and Output Rise Characteristic
Using ON/OFF Voltage Start-Up and Vo Rise Characteristic
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
Conduction Emission of EN55022 Class A
Conduction Emission of EN55022 Class B
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
VER:00 Page 25 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-24S3P3
Efficiency Versus Output Current
Efficiency Versus Input Voltage. Full Load
Power Dissipation Versus Output Current
Derating OutputCurrentVersusAmbientTemperature andAirflow
Vin=Vin(nom)
Derating OutputCurrentVersusAmbientTemperature with Heat-Sink
andAirflow, Vin = Vin(nom)
VER:00 Page 26 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-24S3P3
Typical Output Ripple and Noise.
Transient Response to Dynamic Load Change from
Vin=Vin(nom), Full Load
100% to 75% to 100% of Full Load ; Vin=Vin(nom)
Typical Input Start-Up and Output Rise Characteristic
Using ON/OFF Voltage Start-Up and Vo Rise Characteristic
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
Conduction Emission of EN55022 Class A
Conduction Emission of EN55022 Class B
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
VER:00 Page 27 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-24S05
Efficiency Versus Output Current
Efficiency Versus Input Voltage. Full Load
Power Dissipation Versus Output Current
Derating OutputCurrentVersusAmbientTemperature andAirflow
Vin=Vin(nom)
Derating OutputCurrentVersusAmbientTemperature with Heat-Sink
andAirflow, Vin = Vin(nom)
VER:00 Page 28 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-24S05
Typical Output Ripple and Noise.
Transient Response to Dynamic Load Change from
Vin=Vin(nom), Full Load
100% to 75% to 100% of Full Load ; Vin=Vin(nom)
Typical Input Start-Up and Output Rise Characteristic
Using ON/OFF Voltage Start-Up and Vo Rise Characteristic
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
Conduction Emission of EN55022 Class A
Conduction Emission of EN55022 Class B
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
VER:00 Page 29 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-24S12
Efficiency Versus Output Current
Efficiency Versus Input Voltage. Full Load
Power Dissipation Versus Output Current
Derating OutputCurrentVersusAmbientTemperature andAirflow
Vin=Vin(nom)
Derating OutputCurrentVersusAmbientTemperature with Heat-Sink
andAirflow, Vin = Vin(nom)
VER:00 Page 30 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-24S12
Typical Output Ripple and Noise.
Transient Response to Dynamic Load Change from
Vin=Vin(nom), Full Load
100% to 75% to 100% of Full Load ; Vin=Vin(nom)
Typical Input Start-Up and Output Rise Characteristic
Using ON/OFF Voltage Start-Up and Vo Rise Characteristic
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
Conduction Emission of EN55022 Class A
Conduction Emission of EN55022 Class B
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
VER:00 Page 31 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-24S15
Efficiency Versus Output Current
Efficiency Versus Input Voltage. Full Load
Power Dissipation Versus Output Current
Derating OutputCurrentVersusAmbientTemperature andAirflow
Vin=Vin(nom)
Derating OutputCurrentVersusAmbientTemperature with Heat-Sink
andAirflow, Vin = Vin(nom)
VER:00 Page 32 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-24S15
Typical Output Ripple and Noise.
Transient Response to Dynamic Load Change from
Vin=Vin(nom), Full Load
100% to 75% to 100% of Full Load ; Vin=Vin(nom)
Typical Input Start-Up and Output Rise Characteristic
Using ON/OFF Voltage Start-Up and Vo Rise Characteristic
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
Conduction Emission of EN55022 Class A
Conduction Emission of EN55022 Class B
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
VER:00 Page 33 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-48S1P5 PRODUCT NOT AVAILABLE
Efficiency Versus Output Current
Efficiency Versus Input Voltage. Full Load
Power Dissipation Versus Output Current
Derating OutputCurrentVersusAmbientTemperature andAirflow
Vin=Vin(nom)
Derating OutputCurrentVersusAmbientTemperature with Heat-Sink
andAirflow, Vin = Vin(nom)
VER:00 Page 34 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-48S1P5
Typical Output Ripple and Noise.
PRODUCT NOT AVAILABLE
Transient Response to Dynamic Load Change from
Vin=Vin(nom), Full Load
100% to 75% to 100% of Full Load ; Vin=Vin(nom)
Typical Input Start-Up and Output Rise Characteristic
Using ON/OFF Voltage Start-Up and Vo Rise Characteristic
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
Conduction Emission of EN55022 Class A
Conduction Emission of EN55022 Class B
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
VER:00 Page 35 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-48S1P8 PRODUCT NOT AVAILABLE
Efficiency Versus Output Current
Efficiency Versus Input Voltage. Full Load
Power Dissipation Versus Output Current
Derating OutputCurrentVersusAmbientTemperature andAirflow
Vin=Vin(nom)
Derating OutputCurrentVersusAmbientTemperature with Heat-Sink
andAirflow, Vin = Vin(nom)
VER:00 Page 36 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-48S1P8 PRODUCT NOT AVAILABLE
Typical Output Ripple and Noise.
Transient Response to Dynamic Load Change from
Vin=Vin(nom), Full Load
100% to 75% to 100% of Full Load ; Vin=Vin(nom)
Typical Input Start-Up and Output Rise Characteristic
Using ON/OFF Voltage Start-Up and Vo Rise Characteristic
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
Conduction Emission of EN55022 Class A
Conduction Emission of EN55022 Class B
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
VER:00 Page 37 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-48S2P5
Efficiency Versus Output Current
Efficiency Versus Input Voltage. Full Load
Power Dissipation Versus Output Current
Derating OutputCurrentVersusAmbientTemperature andAirflow
Vin=Vin(nom)
Derating OutputCurrentVersusAmbientTemperature with Heat-Sink
andAirflow, Vin = Vin(nom)
VER:00 Page 38 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-48S2P5
Typical Output Ripple and Noise.
Transient Response to Dynamic Load Change from
Vin=Vin(nom), Full Load
100% to 75% to 100% of Full Load ; Vin=Vin(nom)
Typical Input Start-Up and Output Rise Characteristic
Using ON/OFF Voltage Start-Up and Vo Rise Characteristic
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
Conduction Emission of EN55022 Class A
Conduction Emission of EN55022 Class B
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
VER:00 Page 39 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-48S3P3
Efficiency Versus Output Current
Efficiency Versus Input Voltage. Full Load
Power Dissipation Versus Output Current
Derating OutputCurrentVersusAmbientTemperature andAirflow
Vin=Vin(nom)
Derating OutputCurrentVersusAmbientTemperature with Heat-Sink
andAirflow, Vin = Vin(nom)
VER:00 Page 40 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-48S3P3
Typical Output Ripple and Noise.
Transient Response to Dynamic Load Change from
Vin=Vin(nom), Full Load
100% to 75% to 100% of Full Load ; Vin=Vin(nom)
Typical Input Start-Up and Output Rise Characteristic
Using ON/OFF Voltage Start-Up and Vo Rise Characteristic
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
Conduction Emission of EN55022 Class A
Conduction Emission of EN55022 Class B
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
VER:00 Page 41 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-48S05
Efficiency Versus Output Current
Efficiency Versus Input Voltage. Full Load
Power Dissipation Versus Output Current
Derating OutputCurrentVersusAmbientTemperature andAirflow
Vin=Vin(nom)
Derating OutputCurrentVersusAmbientTemperature with Heat-Sink
andAirflow, Vin = Vin(nom)
VER:00 Page 42 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-48S05
Typical Output Ripple and Noise.
Transient Response to Dynamic Load Change from
Vin=Vin(nom), Full Load
100% to 75% to 100% of Full Load ; Vin=Vin(nom)
Typical Input Start-Up and Output Rise Characteristic
Using ON/OFF Voltage Start-Up and Vo Rise Characteristic
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
Conduction Emission of EN55022 Class A
Conduction Emission of EN55022 Class B
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
VER:00 Page 43 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-48S12
Efficiency Versus Output Current
Efficiency Versus Input Voltage. Full Load
Power Dissipation Versus Output Current
Derating OutputCurrentVersusAmbientTemperature andAirflow
Vin=Vin(nom)
Derating OutputCurrentVersusAmbientTemperature with Heat-Sink
andAirflow, Vin = Vin(nom)
VER:00 Page 44 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-48S12
Typical Output Ripple and Noise.
Transient Response to Dynamic Load Change from
Vin=Vin(nom), Full Load
100% to 75% to 100% of Full Load ; Vin=Vin(nom)
Typical Input Start-Up and Output Rise Characteristic
Using ON/OFF Voltage Start-Up and Vo Rise Characteristic
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
Conduction Emission of EN55022 Class A
Conduction Emission of EN55022 Class B
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
VER:00 Page 45 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-48S15
Efficiency Versus Output Current
Efficiency Versus Input Voltage. Full Load
Power Dissipation Versus Output Current
Derating OutputCurrentVersusAmbientTemperature andAirflow
Vin=Vin(nom)
Derating OutputCurrentVersusAmbientTemperature with Heat-Sink
andAirflow, Vin = Vin(nom)
VER:00 Page 46 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Characteristic Curves (Continued)
All test conditions are at 25°C.The figures are identical for PXF40-48S15
Typical Output Ripple and Noise.
Transient Response to Dynamic Load Change from
Vin=Vin(nom), Full Load
100% to 75% to 100% of Full Load ; Vin=Vin(nom)
Typical Input Start-Up and Output Rise Characteristic
Using ON/OFF Voltage Start-Up and Vo Rise Characteristic
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
Conduction Emission of EN55022 Class A
Conduction Emission of EN55022 Class B
Vin=Vin(nom), Full Load
Vin=Vin(nom), Full Load
VER:00 Page 47 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Test Configurations
Input reflected-ripple current measurement test:
Component
L
C
Value
12μH
220μF
Voltage
---100V
Reference
---Aluminum Electrolytic Capacitor
Peak-to-peak output ripple & noise measurement test:
Output voltage and efficiency measurement test
:
Note:All measurements are taken at the module terminals.
V Io
Efficiency o
Vin I in
100%
VER:00 Page 48 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
EMC Considerations
Suggested Schematic for EN55022 Conducted Emission Class A Limits
Recommended Layout with Input Filter
To meet conducted emissions EN55022 CLASS A needed the following components：
PXF40-12Sxx
Component
C1
C3,C4
Value
6.8uF
1000pF
Voltage
50V
2KV
1812 MLCC
1808 MLCC
Reference
Component
C1
C3,C4
Value
6.8uF
1000pF
Voltage
50V
2KV
1812 MLCC
1808 MLCC
PXF40-48Sxx
Component
C1
C3,C4
Value
2.2uF
1000pF
Voltage
100V
2KV
1812 MLCC
1808 MLCC
PXF40-24Sxx
Reference
Reference
VER:00 Page 49 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
EMC Considerations (Continued)
Suggested Schematic for EN55022 Conducted Emission Class B Limits
Recommended Layout with Input Filter
To meet conducted emissions EN55022 CLASS B needed the following components:
PXF40-12Sxx
Component
C1,C3
C5,C6
L1
Value
4.7uF
1000pF
450uH
Voltage
50V
2KV
----
Reference
1812 MLCC
1808 MLCC
Common Choke
Component
C1,C3
C5,C6
L1
Value
6.8uF
1000pF
450uH
Voltage
50V
2KV
----
Reference
1812 MLCC
1808 MLCC
Common Choke
PXF40-48Sxx
Component
C1,C2
C3,C4
C5,C6
L1
Value
2.2uF
2.2uF
1000pF
830uH
Voltage
100V
100V
2KV
----
Reference
1812 MLCC
1812 MLCC
1808 MLCC
Common Choke
PXF40-24Sxx
VER:00 Page 50 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
EMC Considerations (Continued)
This Common Choke L1 has been define as follows:
■
L1: 450μH±35% / DCR: 25mΩ, max
A height: 9.8 mm, Max
■
L1: 830μH±35% / DCR: 31mΩ, max
A height: 8.8 mm, Max
■ Test condition: 100KHz / 100mV
■ Recommended through hole: Φ0.8mm
■ All dimensions in millimeters
Input Source Impedance
The converter should be connected to a low impedance input source. Highly inductive source impedance can
affect the stability of the converter. An input external L-C filter is recommended to minimize input reflected ripple
current. The inductor has a simulated source impedance of 12μH and the capacitor is Nippon chemi-con KY series
220μF/100V. The capacitor must be located as close as possible to the input terminals of the converter for lowest
impedance.
Output Over Current Protection
When excessive output currents occur in the system, circuit protection is required on all converters. Normally,
overload current is maintained at approximately 150 percent of rated current for PXF40-xxSxx series.
Hiccup-mode is a method of operation in a converter whose purpose is to protect the power supply from being
damaged during an over-current fault condition. It also enables the converter to restart when the fault is removed.
There are other ways of protecting the converter when it is over-loaded, such as the maximum current limiting or
current foldback methods.
One of the problems resulting from over current is that excessive heat may be generated in power devices;
especially MOSFET and Schottky diodes and the temperature of these devices may exceed their specified limits. A
protection mechanism has to be used to prevent these power devices from being damaged.
The operation of hiccup is as follows. When the current sense circuit sees an over-current event, the controller
shuts off the converter for a given time and then tries to start up the converter again. If the over-load condition has
been removed, the converter will start up and operate normally; otherwise, the controller will see another over-current
event and will shut off the converter again, repeating the previous cycle. Hiccup operation has none of the drawbacks
of the other two protection methods, although its circuit is more complicated because it requires a timing circuit. The
excess heat due to overload lasts for only a short duration in the hiccup cycle, hence the junction temperature of the
power devices is much lower.
VER:00 Page 51 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Output Over Voltage Protection
The output over-voltage protection consists of an output Zener diode that monitors the voltage on the output
terminals. If the voltage on the output terminals exceeds the over-voltage protection threshold, then the Zener diode
clamps the output voltage.
Short Circuitry Protection
Continuous, hiccup and auto-recovery mode.
During a short circuit the converter shuts down. The average current during this condition will be very low .
Thermal Consideration
The converter operates in a variety of thermal environments. However, sufficient cooling should be provided to help
ensure reliable operation of the unit. Heat is removed by conduction, convection, and radiation to the surrounding
environment. Proper cooling can be verified by measuring the point as shown in the figure below. The temperature at
this location should not exceed 100°C. When operating, adequate cooling must be provided to maintain the test point
temperature at or below 100°C. Although the maximum point temperature of the converter is 100°C, limiting this
temperature to a lower value will increase the reliability of the unit.
VER:00 Page 52 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Heat Sink Consideration
All dimensions in millimeters
Use heat-sink (7G-0026A) for lowering temperature and higher reliability of the module.
VER:00 Page 53 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Remote ON/OFF Control
The Remote ON/OFF Pin is used to turn on and off the DC-DC converter. The user must use a switch to control
the logic voltage (high or low level) of the ON/OFF pin ,referenced to Vi (-). The switch can be open collector
transistor, FET, or Opto-Coupler that is capable of sinking up to 0.5 mA at a low-level logic Voltage. For High-level
logic of the ON/OFF signal (maximum voltage): the allowable leakage current of the switch at 12V is 0.5 mA.
Remote ON/OFF Implementation Circuits
Isolated-Closure Remote ON/OFF
Level Control Using TTL Output
Level Control Using Line Voltage
Positive logic:
When FEC40 module is turned off at When FEC40 module is turned on at
Low-level logic
High-level logic
VER:00 Page 54 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Mechanical Data
1. All dimensions in Inches (mm)
Tolerance: X.XX±0.02 (X.X±0.5)
X.XXX±0.01 (X.XX±0.25)
2. Pin pitch tolerance ±0.01(0.25)
3. Pin dimension tolerance ±0.004 (0.1)
PIN CONNECTION
PIN
1
2
3
4
5
6
7
8
9
FUNCTION
+INPUT
-INPUT
CTRL
NC
-SENSE
+SENSE
+OUTPUT
-OUTPUT
TRIM
EXTERNAL OUTPUT TRIMMING
Output can be externally trimmed by using
the method shown below.
TRIM UP
TRIM DOWN
5
9
RU
9
RD
6
VER:00 Page 55 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Recommended Pad Layout
TOP VIEW
1.All dimensions in Inches (mm)
Tolerance: X.XX±0.02 (X.X±0.5)
2. Pin pitch tolerance ±0.014(0.35)
VER:00 Page 56 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Output Voltage Adjustment
Output voltage set point adjustment allows the user to increase or decrease the output voltage set point of a
module. This is accomplished by connecting an external resistor between the TRIM pin and either the SENSE(+) or
SENSE(-) pins. With an external resistor between the TRIM and SENSE(-) pin, the output voltage set point increases.
With an external resistor between the TRIM and SENSE(+) pin, the output voltage set point decreases.
TRIM UP
TRIM DOWN
8
9
RU
RD
7
9
TRIM TABLE
PXF40-xxS1P5
Trim up (%)
1
2
3
4
5
6
7
8
9
10
VOUT (Volts)=
1.515
1.53
1.545
1.56
1.575
1.59
1.605
1.62
1.635
1.65
RU (K Ohms)=
4.578
2.605
1.227
0.808
0.557
0.389
0.27
0.18
0.11
0.054
Trim down (%)
1
2
3
4
5
6
7
8
9
10
VOUT (Volts)=
1.485
1.47
1.455
1.44
1.425
1.41
1.395
1.38
1.365
1.35
RD (K Ohms)=
5.704
2.571
1.527
1.005
0.692
0.483
0.334
0.222
0.135
0.065
PXF40-xxS1P8
Trim up (%)
1
2
3
4
5
6
7
8
9
10
VOUT (Volts)=
1.818
1.836
1.854
1.872
1.89
1.908
1.926
1.944
1.962
1.98
RU (K Ohms)=
11.639
5.205
3.06
1.988
1.344
0.915
0.609
0.379
0.2
0.057
Trim down (%)
1
2
3
4
5
6
7
8
9
10
VOUT (Volts)=
1.782
1.764
1.746
1.728
1.71
1.692
1.674
1.656
1.638
1.62
RD (K Ohms)=
14.66
6.57
3.874
2.525
1.716
1.177
0.792
0.503
0.278
0.098
Trim up (%)
1
2
3
4
5
6
7
8
9
10
PXF40-xxS2P5
VOUT (Volts)=
2.525
2.55
2.575
2.6
2.625
2.65
2.675
2.7
2.725
2.75
RU (K Ohms)=
37.076
16.675
9.874
6.474
4.434
3.074
2.102
1.374
0.807
0.354
Trim down (%)
1
2
3
4
5
6
7
8
9
10
VOUT (Volts)=
2.475
2.45
2.425
2.4
2.375
2.35
2.325
2.3
2.275
2.25
RD (K Ohms)=
49.641
22.481
13.428
8.902
6.186
4.375
3.082
2.112
1.358
0.754
Trim up (%)
1
2
3
4
6
7
8
9
10
PXF40-xxS3P3
5
VOUT (Volts)=
3.333
3.366
3.399
3.432
3.465
3.498
3.531
3.564
3.597
3.630
RU (K Ohms)=
57.930
26.165
15.577
10.283
7.106
4.988
3.476
2.341
1.459
0.753
Trim down (%)
1
2
3
4
5
6
7
8
9
10
VOUT (Volts)=
3.267
3.234
3.201
3.168
3.135
3.102
3.069
3.036
3.003
2.970
RD (K Ohms)=
69.470
31.235
18.490
12.117
8.294
5.745
3.924
2.559
1.497
0.647
VER:00 Page 57 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Output Voltage Adjustment(Continued)
PXF40-xxS05
Trim up (%)
1
2
3
4
5
6
7
8
9
10
VOUT (Volts)=
5.050
5.100
5.150
5.200
5.250
5.300
5.350
5.400
5.450
5.500
RU (K Ohms)=
36.570
16.580
9.917
6.585
4.586
3.253
2.302
1.588
1.032
0.588
Trim down (%)
1
2
3
4
5
6
7
8
9
10
VOUT (Volts)=
4.950
4.900
4.850
4.800
4.750
4.700
4.650
4.600
4.550
4.500
RD (K Ohms)=
45.533
20.612
12.306
8.152
5.660
3.999
2.812
1.922
1.230
0.676
PXF40-xxS12
Trim up (%)
1
2
3
4
5
6
7
8
9
10
VOUT (Volts)=
12.120
12.240
12.360
12.480
12.600
12.720
12.840
12.960
13.080
13.200
RU (K Ohms)=
367.910
165.950
98.636
64.977
44.782
31.318
21.701
14.488
8.879
4.391
Trim down (%)
1
2
3
4
5
6
7
8
9
10
VOUT (Volts)=
RD (K Ohms)=
11.880
11.760
11.640
11.520
460.990
207.950
123.600
81.423
11.400
56.118
11.280
11.160
11.040
39.249
27.199
18.162
10.920
10.800
11.132
5.509
PXF40-xxS15
Trim up (%)
1
2
3
4
5
6
7
8
9
10
VOUT (Volts)=
15.150
15.300
15.450
15.600
15.750
15.900
16.050
16.200
16.350
16.500
RU (K Ohms)=
404.180
180.590
106.060
68.796
46.437
31.531
20.883
12.898
6.687
1.718
Trim down (%)
1
2
3
4
5
6
7
8
9
10
VOUT (Volts)=
14.850
14.700
14.550
14.400
14.250
14.100
13.950
13.800
13.650
13.500
RD (K Ohms)=
499.820
223.410
131.270
85.204
57.563
39.136
25.974
16.102
8.424
2.282
VER:00 Page 58 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Remote Sense Application Circuit
The Remote Sense function can regulate the voltage at the terminals (local sensing) or at the load.
(remote sensing). The maximum voltage compensation is 10% Vo, i.e.:
[Vo (+) to Vo (-)] – [Sense (+) to Sense (-)] < 10% Vo
If the Remote Sense function is not used, then the SENSE (+) should be connected to OUTPUT (+)
and the SENSE (-) should be connected to OUTPUT(-) of the PXF module.
Soldering and Reflow Consideration
Lead free wave solder profile for PXF40 –xxSxx DIP type
Zone
Preheat zone
Reference Parameter
Rise temp. speed : 3°C / sec max.
Preheat temp. : 100~130°C
Actual heating
Peak temp. : 250~260°C
Peak time (T1+T2 time) : 4~6 sec
Reference Solder: Sn-Ag-Cu / Sn-Cu
Hand Welding:Soldering iron-Power 90W
Welding Time: 2-4 sec
Temp.: 380-400 °C
VER:00 Page 59 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Packaging Information
10 PCS per TUBE
VER:00 Page 60 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Part Number Structure
PXF 40 – 48 S 05
Max. Output Power
40Watts
Input Voltage Range
12 : 9 ~ 18V
24 : 18 ~ 36V
48 : 36 ~ 75V
Output Voltage
1P5 : 1.5Vdc
1P8 1.8 Vdc
2P5 2.5 Vdc
3P3 3.3 Vdc
05 : 5Vdc
12 : 12Vdc
15 : 15Vdc
Single Output
Model
Number
Input
Range
Output
Voltage
Output Current
Min. load
PXF40-12S1P5
9 – 18 VDC
1.5 VDC
0mA
PXF40-12S1P8
9 – 18 VDC
1.8 VDC
0mA
PXF40-12S2P5
9 – 18 VDC
2.5 VDC
0mA
PXF40-12S3P3
9 – 18 VDC
3.3 VDC
0mA
PXF40-12S05
9 – 18 VDC
5 VDC
0mA
PXF40-12S12
9 – 18 VDC
12 VDC
0mA
PXF40-12S15
9 – 18 VDC
15 VDC
0mA
PXF40-24S1P5
18 – 36 VDC
1.5 VDC
0mA
PXF40-24S1P8
18 – 36 VDC
1.8 VDC
0mA
PXF40-24S2P5
18 – 36 VDC
2.5 VDC
0mA
PXF40-24S3P3
18 – 36 VDC
3.3 VDC
0mA
PXF40-24S05
18 – 36 VDC
5 VDC
0mA
PXF40-24S12
18 – 36 VDC
12 VDC
0mA
PXF40-24S15
18 – 36 VDC
15 VDC
0mA
PXF40-48S1P5
36 – 75 VDC
1.5 VDC
0mA
PXF40-48S1P8
36 – 75 VDC
1.8 VDC
0mA
PXF40-48S2P5
36 – 75 VDC
2.5 VDC
0mA
PXF40-48S3P3
36 – 75 VDC
3.3 VDC
0mA
PXF40-48S05
36 – 75 VDC
5 VDC
0mA
PXF40-48S12
36 – 75 VDC
12 VDC
0mA
PXF40-48S15
36 – 75 VDC
15 VDC
0mA
Note 1. Typical value at nominal input voltage and no load.
Note 2. Maximum value at nominal input voltage and full load of standard type.
Note 3. Typical value at nominal input voltage and full load.
(3)
Input Current
(1)
Full Load No load
8000mA
110mA
8000mA
110mA
8000mA
110mA
8000mA
175mA
8000mA
225mA
3333mA
255mA
2666mA
310mA
8000mA
40mA
8000mA
40mA
8000mA
40mA
8000mA
60mA
8000mA
80mA
3333mA
70mA
2666mA
85mA
8000mA
25mA
8000mA
25mA
8000mA
25mA
8000mA
35mA
8000mA
40mA
3333mA
50mA
2666mA
50mA
(2)
Full Load
1250mA
1538mA
2083mA
2683mA
4065mA
4065mA
4015mA
649mA
759mA
1016mA
1325mA
1961mA
2048mA
1985mA
321mA
375mA
508mA
655mA
969mA
1000mA
992mA
Eff
(%)
84
82
84
86
86
86
87
81
83
86
87
89
88
89
82
84
86
88
90
89
89
VER:00 Page 61 of 62 Issued Date：2009/03/02
DataSheet
40W, Single Output
Safety and Installation Instruction
Fusing Consideration
Caution: This converter is not internally fused. An input line fuse must always be used.
This encapsulated converter can be used in a wide variety of applications, ranging from simple stand-alone
operation to an integrated part of a sophisticated power architecture. For maximum flexibility, internal fusing is not
included; however, to achieve maximum safety and system protection, always use an input line fuse. The safety
agencies require a slow-blow fuse with maximum rating of 8A. Based on the information provided in this data sheet on
Inrush energy and maximum DC input current; the same type of fuse with lower rating can be used. Refer to the fuse
manufacturer’s data for further information.
MTBF and Reliability
The MTBF of PXF40-xxSxx DC/DC converters has been calculated using:
Bellcore TR-NWT-000332 Case I: 50% stress, Operating Temperature at 40°C (Ground fixed and controlled
6
environment ). The resulting figure for MTBF is 1.398×10 hours.
MIL-HDBK-217F NOTICE2 FULL LOAD, Operating Temperature at 25°C ℃. The resulting figure for MTBF is
5
3.585×10 hours.
VER:00 Page 62 of 62 Issued Date：2009/03/02
工商网监
湘ICP备2023018690号
