Datasheet

ManualsBrandsTDK-LAMBDA ManualsPSU ComponentsDC/DC converter (print) 1.667 A 40 W No. of outputs: 2 x

Features

 Dual output current up to ±1.667A

 40 watts maximum output power

 4:1 ultra wide input voltage range of 9-36 and 18-75VDC

 Six-sided continuous shield

 Case grounding

 High efficiencyup to 86%

 Low profile:2.002.000.40inch (50.850.810.2 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 circuitprotection, auto-recovery

 Remote ON/OFF

Options

 Heat sinks available for extended operation

 Remote ON/OFFlogic configuration

PXF40-xxWDxx Dual Output DC/DC Converter

9 to 36 Vdc and 18 to 75 Vdc input, ±12 to ±15 Vdc Dual Output, 40W

General Description

The PXF40-xxWDxx dual output converters offer 40 watts of output power from a 2.00 x 2.00 x 0.4 inch

package.This series with a 4:1 ultra wide input voltage of 9-36VDC and 18-75VDC, features 1600VDC of

isolation, short-circuit, over-voltage andover-temperature protection, as well as six sided shielding.All models

are particularly suited for telecommunications, industrial, mobile telecom and test equipment applications.

Table of contents

Absolute Maximum Ratings P2 Heat Sink Consideration P17

Output Specification P2 Remote ON/OFF Control P18

Input Specification P3 Mechanical Data P19

General Specification P4 Recommended Pad Layout P19

Characteristic Curves P5 Output Voltage Adjustment P20

Test Configurations P13 Soldering Consideration P21

EMC Considerations P14 Packaging Information P21

Input Source Impedance P16 Part Number Structure P22

Output Over Current Protection P16 Safety and Installation Instructions P22

Output Over Voltage Protection P16 MTBF and Reliability P22

Thermal Consideration P16

Applications

 Wireless Network

 Telecom/Datacom

 Industry Control System

 Measurement Equipment

 Semiconductor Equipment

Summary of content (23 pages)

PAGE 1
PXF40-xxWDxx Dual Output DC/DC Converter 9 to 36 Vdc and 18 to 75 Vdc input, ±12 to ±15 Vdc Dual Output, 40W Features  Dual output current up to ±1.667A  40 watts maximum output power  4:1 ultra wide input voltage range of 9-36 and 18-75VDC  Six-sided continuous shield  Case grounding  High efficiency up to 86%  Low profile:2.002.000.40 inch (50.850.810.
PAGE 2
DataSheet 40W, Dual Output Absolute Maximum Rating Parameter Model Input Voltage Continuous Transient (100ms) Operating Ambient Temperature (with derating) Operating Case Temperature Storage Temperature 24WDxx 48WDxx 24WDxx 48WDxx All All All Min Max Unit 36 75 50 100 105 105 125 -40 -55 VDC °C °C °C Output Specification Parameter Output Voltage (Vin = Vin(nom) ; Full Load ; TA=25°C) Model Min Typ Max xxWD12 11.88 12 12.12 xxWD15 14.85 15 15.15 All -0.2 +0.2 -1.0 +1.0 -5.0 +5.
PAGE 3
DataSheet 40W, Dual Output Input Specification Parameter Operating Input Voltage Input Current (Maximum value at Vin = Vin(nom); Full Load) Input Standby Current (Typical value at Vin = Vin(nom); No Load) Under Voltage Lockout Turn-on Threshold Under Voltage Lockout Turn-off Threshold Input Reflected Ripple Current (5 to 20MHz, 12μH Source Impedance) Model Min Typ Max 24WDxx 9 24 36 48WDxx 18 48 75 24WD12 2032 24WD15 2032 48WD12 1016 48WD15 1016 24WD12 60 24WD15 70 48WD12 30 48W
PAGE 4
DataSheet 40W, Dual Output General Specification Parameter Efficiency (Vin = Vin(nom) ; Full Load ; TA=25°C) Model Min Typ 24WD12 86 24WD15 86 48WD12 86 48WD15 86 Max Unit % Isolation Voltage Input to Output All Input (Output) to Case VDC 1600 1600 Isolation Resistance All 1 GΩ Isolation Capacitance All Switching Frequency All 300 kHz Weight All 60 g All 1.105×106 2500 pF MTBF Bellcore TR-NWT-000332, TC=40°C 1.
PAGE 5
DataSheet 40W, Dual Output Characteristic Curves All test conditions are at 25°C.The figures are for PXF40-24WD12 Efficiency Versus Output Current Efficiency Versus Input Voltage.
PAGE 6
DataSheet 40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C.The figures are for PXF40-24WD12 Typical Output Ripple and Noise.
PAGE 7
DataSheet 40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C. The figures are for PXF40-24WD15 Efficiency Versus Output Current Efficiency Versus Input Voltage.
PAGE 8
DataSheet 40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C.The figures are for PXF40-24WD15 Typical Output Ripple and Noise.
PAGE 9
DataSheet 40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C.The figures are for PXF40-48WD12 Efficiency Versus Output Current Efficiency Versus Input Voltage.
PAGE 10
DataSheet 40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C.The figures are for PXF40-48WD12 Typical Output Ripple and Noise.
PAGE 11
DataSheet 40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C. The figures are for PXF40-48WD15 Efficiency Versus Output Current Efficiency Versus Input Voltage.
PAGE 12
DataSheet 40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C.The figures are for PXF40-48WD15 Typical Output Ripple and Noise.
PAGE 13
DataSheet 40W, Dual Output Test Configurations Input reflected-ripple current measurement test: Component L C Value 12μH 47μF 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.
PAGE 14
DataSheet 40W, Dual Output EMC Considerations Suggested Schematic for EN55022 Conducted Emissions Class A Limits Recommended Layout with Input Filter To meet conducted emissions EN55022 CLASS A needed the following components： Value PXF40-24WDxx Voltage Component C1,C2 C3,C4 ---- ---- 1000pF 2KV Component C1,C2 C3,C4 Value 2.
PAGE 15
DataSheet 40W, Dual Output EMC Considerations (Continued) Suggested Schematic for EN55022 Conducted Emissions Class B Limits Recommended Layout with Input Filter To meet conducted emissions EN55022 CLASS B needed the following components： Component C1,C3 C5,C6 L1 Value 4.7uF 1000pF 450uH PXF40-24WDxx Voltage Reference 50V 1812 MLCC 2KV 1206 MLCC ---Common Choke PXF40-48WDxx Component Value Voltage Reference C1,C2 2.2uF 100V 1812 MLCC C3,C4 2.
PAGE 16
DataSheet 40W, Dual Output 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. 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 KZE series 47μF/100V. The capacitor must located as close as possible to the input terminals of the converter for lower impedance.
PAGE 17
DataSheet 40W, Dual Output VER:00 Page 17 of 22 Issued Date：2009/03/02
PAGE 18
DataSheet 40W, Dual Output Heat Sink Consideration Use heat-sink (7G-0026A) for lowering temperature; thus increasing the reliability of the converter.
PAGE 19
DataSheet 40W, Dual Output Remote ON/OFF Control The Remote ON/OFF Pin is used to turn the converter on and off. The user must use a switch to control the logic voltage (high or low level) of the pin referenced to Vi (-). The switch can be an open collector transistor, FET or Opto-Coupler. The switch must be capable of sinking up to 0.5 mA at low-level logic voltage. Using High-level logic, the maximum allowable leakage current of the switch at 12V is 0.5 mA.
PAGE 20
DataSheet 40W, Dual Output Mechanical Data 2.00 (50.8) DIA. 0.04(1.0) 1.10 (27.9) 0.400 (10.16) 3 2 1 6 5 1.800 (45.72) 2.00 (50.8) BOTTOM VIEW 8 7 4 0.10 (2.5) 0.100 (2.54) 0.300 (7.62) 0.600 (15.24) 0.800 (20.32) PIN CONNECTION PIN 1 2 3 4 5 6 7 8 0.40(10.2) 0.200 (5.08) FUNCTION +INPUT -INPUT CTRL +OUTPUT COM COM -OUTPUT TRIM 0.200 (5.08) 0.22 (5.6) 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.
PAGE 21
DataSheet 40W, Dual Output Output Voltage Adjustment Output voltage set point adjustment allows the user to increase or decrease the output voltage set point of a converter. This is accomplished by connecting an external resistor between the TRIM pin and either the Vo(+) or Vo(-) pins. With an external resistor between the TRIM and Vo(-) pin, the output voltage set point increases. With an external resistor between the TRIM and Vo(+) pin, the output voltage set point decreases.
PAGE 22
DataSheet 40W, Dual Output Soldering Consideration Lead free wave solder profile for PXF40-xxWDxx -SERIES 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.
PAGE 23
DataSheet 40W, Dual Output Part Number Structure PXF40 – 48 WD 12 – N Max. Output Power 40Watts Negative Logic Output Voltage 12 : 12V 15 : 15V Input Voltage Range 24 : 9 ~ 36V 48 : 18 ~ 75V Dual Output Model Number Input Range Output Voltage ±12 VDC PXF40-24WD12 9 – 36 VDC ±15 VDC PXF40-24WD15 9 – 36 VDC ±12 VDC PXF40-48WD12 18 – 75 VDC ±15 VDC PXF40-48WD15 18 – 75 VDC Note 1. Maximum value at nominal input voltage and full load Note 2. Typical value at nominal input voltage and full load.