Datasheet

ManualsBrandsTDK-LAMBDA ManualsPSU ComponentsDC/DC converter (print) 12 V 1.67 A 20 W No. of outputs: 1 x

Features

 Low profile: 2.0x1.6x0.4 inches(50.8x40.6x10.2mm)

 2：1wide input voltage of 9-18, 18-36 and 36-75VDC

 4：1ultra wide input voltage of 9-36 and18-75VDC

 20Watts output power

 Inputto output isolation:1600Vdc, min

 Operating case temperature range :100℃ max

 Over-currentprotection, auto-recovery

 Output over voltage protection

 ISO 9001 certified manufacturing facilities

 UL60950-1, EN60950-1 and IEC60950-1 licensed

 CE Mark meet 2006/95/EC, 93/68/EEC and2004/108/EC

 Compliantto RoHS EU directive 2002/95/EC

Applications

 Distributed powerarchitectures

 Communications equipment

 Computer equipment

PXE20 Single Output DC/DC Converters

9 to 75 Vdc input, 3.3 to 15 Vdc Single Output, 20W

General Description

ThePXE20single output series offers 20Watts ofoutput power from a 2 x 1.6 x 0.4 inch package.ThePXE20-xxSxx

models have a 2:1 wide input voltage of 9-18,18-36 and 36-75VDC.ThePXE20-xxWSxx models have a 4:1 wide

inputvoltage of 9-36 and 18-75VDC.

Table of contents

Absolute Maximum Rating P2 External trim adjustment P7

Output Specifications P2 Characteristic curve P9

Input Specifications P3 Test configurations P26

General Specifications P3 Part number structure P27

Thermal Consideration P4 Mechanical data P27

Output over current protection P6 Safety and installation instruction P28

Short circuit protection P6 MTBF and Reliability P28

Solder and Reflow consideration P7

Summary of content (28 pages)

PAGE 1
PXE20 Single Output DC/DC Converters 9 to 75 Vdc input, 3.3 to 15 Vdc Single Output, 20W Features  Low profile: 2.0x1.6x0.4 inches (50.8x40.6x10.
PAGE 2
Absolute Maximum Rating Parameter 12Sxx 36 24Sxx 50 48Sxx 100 Unit Vdc Vdc Vdc +85 ℃ 100 ℃ Device Input Voltage Continuous Transient (100ms) Operating temperature range (Operating temperature will be depended De-rating curve) Standard Min Typ -40 Operating case range All Storage temperature All -55 I/O Isolation voltage All 1600 I/O Isolation capacitance All Max ℃ +105 Vdc 300 pF Output Specifications Parameter Device Min Typ Max xxS33 3.267 3.30 3.333 xxS05 4.
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Input Specifications Parameter Operating Input Voltage Input reflected ripple current Start Up Time (nominal Vin and constant resistive load) Device Min Typ Max Unit 12Sxx 9 12 18 Vdc 24(W)Sxx 18(9) 24 36 Vdc 48(W)Sxx 36(18) 48 75 Vdc All 25 mA p-p All 20 mS Remote ON/OFF Positive Logic DC-DC ON All 3.5 12 Vdc DC-DC OFF All 0 1.
PAGE 4
Thermal Consideration The power module 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 shown in the figure below. The temperature at this location should not exceed 100C.
PAGE 5
PXE20-48S15 Derating Curve 120 100 Output Power(%) 80 60 40 nature convection nature convection with heat-sink 20 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 Ambient Temperature( ℃) PXE20-24WS3P3 120 Output Power(%) 100 80 60 nature convection nature convection with heat-sink 40 20 0 -40 -30 -20 -10 0 10 20 30 40 50 60 Ambient Temperature( ℃) 70 80 90 100 PXE20- 48WS12 120 100 80 nature convection nature convection with heat-sink 60 40 20 0 - 40 - 30 - 20 - 10 0 10 20
PAGE 6
Output over current protection When excessive output currents occur in the system, circuit protection is required on all power supplies. Normally, overload current is maintained at approximately 150 percent of rated current for the PXE20-S Series. Hiccup-mode is a method of operation in a power supply whose purpose is to protect the power supply from being damaged during an over-current fault condition. It also enables the power supply to restart when the fault is removed.
PAGE 7
Soldering and Reflow Consideration Lead free wave solder profile for PXE20-S DIP type Zone Reference Parameter Preheat zone Rise temp. speed : 3℃/ sec max. Preheat temp. : 100~130℃ Actual heating Peak temp. : 250~260℃ 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 ℃ External trim adjustment Output voltage set point adjustment allows the user to increase or decrease the output voltage set point of a module.
PAGE 8
+Output♁ 1 6 ♁ +Input -Output♁ 7 ♁ -Input . Trim up 2 Trim Ru ♁ 8 EXTERNAL OUTPUT TRIMMING TRIM TABLE PXE20-xxS3P3 Trim down 1 2 3 4 5 6 7 8 9 10 % Vout= 3.266 3.233 3.200 3.167 3.134 3.101 3.068 3.035 3.002 2.969 Volts Rx= 69.470 31.235 18.490 12.117 8.294 5.745 3.924 2.559 1.497 0.647 K Ohms Trim up 1 2 3 4 5 6 7 8 9 10 % Vout= 3.332 3.365 3.398 3.431 3.464 3.497 3.530 3.563 3.596 3.629 Volts Rx= 57.930 26.165 15.577 10.283 7.
PAGE 9
Characteristic Curve Efficiency a. Efficiency with load change under different line condition at room temperature PXE20-12S3P3 85.00 80.00 Eff(%) 75.00 9V 12V 18V 70.00 65.00 60.00 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 4 lout(A ) PXE20-24S05 90.00 Eff(%) 85.00 80.00 75.00 18V 24V 36V 70.00 65.00 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 4 lout(A ) PXE20- 48S15 90.00 85.00 Eff(%) 80.00 75.00 36V 48V 75V 70.00 65.00 60.
PAGE 10
P XE20-24WS3P 3 85.00 80.00 75.00 70.00 65.00 9V 24V 36V 60.00 55.00 50.00 400 800 1200 1600 2000 2400 2800 3200 3600 4000 lo ut(mA ) PXE20-48WS12 90.00 85.00 Eff(%) 80.00 75.00 70.00 18V 48V 75V 65.00 60.00 55.
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b. Efficiency with line change under different load condition at room temperature PXE20-12S3P3 85.00 Eff(%) 80.00 75.00 4000mA 2000mA 400mA 70.00 65.00 60.00 9V 10V 11V 12V 13V 14V 15V 16V 17V 18V Vin(V) PXE20-24S05 90.00 Eff(%) 85.00 80.00 75.00 4000mA 2000mA 400mA 70.00 65.00 18V 20V 22V 24V 26V 28V 30V 32V 34V 36V Vin(V) PXE20-48S15 90.00 85.00 Eff(%) 80.00 75.00 70.00 1330mA 665mA 133mA 65.00 60.
PAGE 12
PXE20-24WS3P3 90.00 80.00 4000mA 2000mA 400mA Eff(%) 70.00 60.00 50.00 40.00 30.00 9V 12V 15V 18V 21V 24V 27V 30V 33V 36V Vin(V) PXE20-48WS12 90.00 85.00 Eff(%) 80.00 75.00 4000mA 2000mA 400mA 70.00 65.00 60.00 55.
PAGE 13
c. Power Dissipation Curves PXE20-12S3P3 5.000 pd(w) 4.000 9V 12V 18V 3.000 2.000 1.000 0.000 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 4 lout(A ) PXE20-24S05 5.000 pd(w) 4.000 18V 24V 36V 3.000 2.000 1.000 0.000 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 4 lout(A ) PXE20-48S15 4.500 pd(w) 3.500 2.500 36V 48V 75V 1.500 0.500 0.13 0.26 0.39 0.52 0.65 0.78 0.91 1.04 1.17 1.
PAGE 14
PXE20-24WS3P3 4.500 18V 24V 36V pd(w) 3.500 2.500 1.500 0.500 400 800 1200 1600 2000 2400 2800 3200 3600 4000 lout(mA ) PXE20-48WS12 4.000 pd(w) 3.000 2.000 1.000 36V 48V 75V 0.
PAGE 15
Output ripple & noise PXE20-12S3P3 Low Line, Full Load Normal Line, Full Load High Line, Full Load Ripple noise=10.0mV Ripple noise=10.8mV Ripple noise=12.4mV PXE20-24S05 Low Line, Full Load Normal Line, Full Load High Line, Full Load Ripple noise=11.2mV Ripple noise=13.6mV Ripple noise=18.4mV PXE20-48S15 Low Line, Full Load Normal Line, Full Load High Line, Full Load Ripple noise=19.2mV Ripple noise=22.4mV Ripple noise=35.
PAGE 16
PXE20-24WS3P3 Low Line, Full Load Normal Line, Full Load High Line, Full Load Ripple noise=23.2mV Ripple noise=31.5mV Ripple noise=30.4mV PXE20-48WS12 Low Line, Full Load Normal Line, Full Load High Line, Full Load Ripple noise=38.5mV Ripple noise=67.6mV Ripple noise=98.
PAGE 17
Transient Peak and Response PXE20-12S3P3 Low Line, Full Load Normal Line, Full Load High Line, Full Load Transient Peak 83.0mV Transient Peak 87.0mV Transient Peak 91.
PAGE 18
PXE20-24WS3P3 Low Line, Full Load Normal Line, Full Load High Line, Full Load Transient Peak 110mV Transient Peak 115mV Transient Peak 125mV Transient Response 90Us Transient Response 86uS Transient Response 190uS PXE20-48WS12 Low Line, Full Load Normal Line, Full Load High Line, Full Load Transient Peak 182mV Transient Peak 204mV Transient Peak 232mV Transient Response 130uS Transient Response 164uS Transient Response 154uS 18
PAGE 19
Inrush Current PXE20-12S3P3 Low Line, Full Load Normal Line, Full Load High Line, Full Load Inrush current=(61.2/10) X500mA=3060mA Inrush current=(38.2/10) x500mA=1910mA Inrush current=(26.2/10) x500mA=1310mA Low Line, Full Load Normal Line, Full Load High Line, Full Load Duration: 304uS Duration: 288uS Duration: 240uS PXE20-24S05 Low Line, Full Load Normal Line, Full Load High Line, Full Load Inrush current=(31.6/10) X500mA=1580mA Inrush current=(23.
PAGE 20
PXE20-48S15 Low Line, Full Load Normal Line, Full Load High Line, Full Load Inrush current=(41.0/10) X200mA=820mA Inrush current=(31.0/10) x200mA=620mA Inrush current=(21.6/10) x200mA=432mA Low Line, Full Load Normal Line, Full Load High Line, Full Load Duration: 600uS Duration: 540uS Duration: 520uS PXE20-24WS3P3 Low Line, Full Load Normal Line, Full Load High Line, Full Load Inrush current=(42.8/10) X500mA=2140mA Inrush current=(18.4/10) x500mA=920mA Inrush current=(13.
PAGE 21
PXE20-48WS12 Low Line, Full Load Normal Line, Full Load High Line, Full Load Inrush current=(23.
PAGE 22
Input Ripple Current PXE20-12S3P3 Low Line, Full Load Normal Line, Full Load High Line, Full Load Ripple current=(4.2/10) x20=8.4mA Ripple current=(3.2/10) x20=6.4mA Ripple current=(2.8/10) x20=5.6mA PXE20-24S05 Low Line, Full Load Normal Line, Full Load High Line, Full Load Ripple current=(2.41/10) x20=4.82mA Ripple current=(2.61/10) x20=5.22mA Ripple current=(2.79/10) x20=5.58mA PXE20-48S15 Low Line, Full Load Normal Line, Full Load High Line, Full Load Ripple current=(3.
PAGE 23
PXE20-24WS3P3 Low Line, Full Load Normal Line, Full Load High Line, Full Load Ripple current=(4.6/10) x10=4.6mA Ripple current=(3.0/10) x10=3.0mA Ripple current=(3.2/10) x10=3.2mA PXE20-48WS12 Low Line, Full Load Normal Line, Full Load High Line, Full Load Ripple current=(3.4/10) x10=3.4mA Ripple current=(3..2/10) x10=3.2mA Ripple current=(3.6/10) x10=3.
PAGE 24
Delay Time and Raise Time PXE20-12S3P3 Normal Line, Full Load Normal Line, Full Load Rise Time=397.0uS Delay Time= 624uS PXE20-24S05 Normal Line, Full Load Normal Line, Full Load Rise Time=272.5uS Delay Time= 500uS PXE20-48S15 Normal Line, Full Load Normal Line, Full Load Rise Time=696.7uS DelayTime=1.
PAGE 25
PXE20-24WS3P3 Normal Line, Full Load Normal Line, Full Load Rise Time=480uS DelayTime=620uS PXE20-48WS12 Normal Line, Full Load Normal Line, Full Load Rise Time=5.12mS DelayTime=5.
PAGE 26
Testing Configurations Input reflected-ripple current Measurement: Component L C Value 12μH 220μF Voltage ---100V Reference ---Aluminum Electrolytic Capacitor Peak-to-peak output ripple & noise Measurement: Output Voltage and Efficiency Measurement: Note: All measurements are taken at the module terminals.
PAGE 27
Part Number Structure PXE 20 – 24 (W)S 12 Total Output power 20 Watt Input Voltage Range 12xxx : 9~18V 24xxx : 18~36V 48xxx : 36~75V 24Wxxx: 9~36V 48Wxxx: 18~75V 4:1 Wide Input Voltage Range Output Voltage 3P3 : 3.3V 05 : 5V 12 : 12V 15 : 15V Single Output Mechanical Data Pin 1 2 4 5 6 7 8 PIN CONNECTION Function +INPUT -INPUT CTRL NO PIN +OUTPUT -OUTPUT TRIM EXTERNAL OUTPUT TRIMMING Output can be externally trimmed by using the method shown below.
PAGE 28
Safety and Installation Instruction Isolation consideration The PXE20 series features 1.6k Volt DC isolation from input to output, input to case, and output to case. The input to 9 output resistance is greater than 10 ohms. Nevertheless, if the system using the power module needs safety agency approval, certain rules must be followed in the design of the system when using the product In particular, all of the creepage and clearance requirements of the end-use safety requirement must be observed.