PXD20-12D15

PXD20-xxDxx Dual Output DC/DC Converter 9 to 18 , 18to 36 and 36 to75 Vdc input, 12 and 15 Vdc Dual Output, 20W Features  Low profile: 2.0 x1.0X0.4 inches (50.8X25.4X10.2mm)  2:1 wide input voltage of 9-18, 18-36 and 36-75VDC  20 Watts output power  Input to output isolation: 1600Vdc, min  Operating case temperature range :100°C max  Over-current protection, 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 and 2004/108/EC  Compliant to RoHS EU directive 2002/95/EC Applications  Distributed power architectures  Communication equipment  Computer equipment Option  Negative logic Remote on/off General Description The PXD20-xxDxx dual output series offers 20 watts of output power from a 2 x 1 x 0.4 inch package. This series has a 2:1 wide input voltage of 9-18, 18-36, or 36-75VDC , and features 1600VDC of isolation, short-circuit , and over-voltage protection. Table of contents Absolute maximum ratings P2 Solder and Refiow Considerations P8 Input Specifications P2 Characteristic curve P9 General Specifications P2 Test configurations P19 Output Specifications P3 Part number structure P20 Thermal Considerations P4 Mechanical data P20 Output over current protection P7 Safety and installation instructions P21 Short circuit protection P7 MTBF and Reliability P21 Feb.2006 20W, DUAL OUTPUT Absolute Maximum Rating Parameter Max Unit 12Dxx 18 Vdc 24Dxx 36 Vdc 48Dxx 75 Vdc 12Dxx 36 Vdc 24Dxx 50 Vdc 48Dxx 100 Vdc +85 °C 100 °C Device Continuous Input Voltage Transient (100ms) Operating temperature range All (Operating temperature will be depended De-rating curve) Min Typ -40 Operating case range All Storage temperature All -55 I/O Isolation voltage All 1600 I/O Isolation capacitance All +105 °C Vdc 1000 pF Input Specifications Parameter Device Operating Input Voltage Input reflected ripple current (Please see the testing configurations part.) Start Up Time (nominal vin and Power up constant resistive load) Remove on/off Min Typ Max Unit 12Dxx 9 12 18 Vdc 24Dxx 18 24 36 Vdc 48Dxx 36 48 75 Vdc All 20 mA p-p All 10 mS Remote ON/OFF Positive Logic Negative Logic DC-DC ON All 3 12 Vdc DC-DC OFF All 0 1.2 Vdc All 0 1.2 Vdc All 3 12 Vdc Max Unit DC-DC ON (Option) DC-DC OFF General Specifications Parameter Efficiency Test at Vin, nom and full load (Please see he testing configurations part.) Isolation resistance Transient Response Recovery Time (25% load step change) Device Min Typ 12D12 86 % 12D15 86 % 24D12 87 % 24D15 88 % 48D12 88 % 48D15 88 % All All 9 Ω 10 Isolation Capacitance All Switching Frequency(Test at Vin, nom and full load) All 500 Weight All 27 MTBF (please see the MTBF and reliability part) All μS 250 1000 pF kHz g 6 1.791×10 hours 2 Feb.2006 20W, DUAL OUTPUT Output Specifications Parameter Device Min Typ Max Unit xxD12 11.88 12.00 12.12 Vdc xxD15 14.85 15.00 15.15 Vdc Line Regulation(LL to HL at Full Load) All -0.2 0.2 % Load Regulation(0% to 100% Full Load) All -0.5 0.5 % Operating Output Range Output Ripple & Noise, 20MHz bandwidth (Measured with a 104pF/50V MLCC) Temperature Coefficient Output Current Output Over Voltage Protection Zener diode clamp All mVp-p All -0.02 +0.02 %/°C xxD12 0 ±833 mA xxD15 0 ±667 mA xxD12 15 Vdc xxD15 18 Vdc Output Over Current Protection All Output Short Circuit Protection All Output Capacitor Load 100 150 % FL Hiccup, automatic recovery xxD12 ±680 μF xxD15 ±450 μF 3 Feb.2006 20W, DUAL OUTPUT 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 as indicated 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 temperature of the power modules is 100°C, lowering this temperature will increase the reliability of the unit. Measurement shown in inches(mm) TOP VIEW Following are derating curves for PXD20-12D15, 24D12 and 48D15. 4 Feb.2006 20W, DUAL OUTPUT P XD20-12D15 120 100 Nature convectio n Nature convectio n with heat-sink 80 60 40 20 0 -40 -30 -20 -10 0 10 20 30 40 50 60 A mbient Temperature(°C ) 70 80 90 100 70 80 90 100 PXD20-24D15 120 100 Nature convect ion 80 Nature convect ion wit h heat sink 60 40 20 0 -40 -30 -20 -10 0 10 20 30 40 50 60 A mbient Temperature( °C ) 5 Feb.2006 20W, DUAL OUTPUT P XD20-48D15 120 100 80 Nature co nvectio n 60 Nature co nvectio n with heat-sink 40 20 0 -40 -30 -20 -10 0 10 20 30 40 50 60 A mbient Temperature( °C ) 70 80 90 100 6 Feb.2006 20W, DUAL OUTPUT 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 PXD20-xxDxx 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. There are other ways of protecting the power supply 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 those devices may exceed their specified limits. A protection mechanism has to be used to prevent those 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 power supply for a given time and then tries to start up the power supply again. If the over-load condition has been removed, the power supply will start up and operate normally; otherwise, the controller will see another over-current event and shut off the power supply 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. Short Circuit Protection Continuous, hiccup and auto-recovery mode. During short circuit, the converter still shut down. The average current during this condition will be very low . 7 Feb.2006 20W, DUAL OUTPUT Soldering and Reflow Consideration Lead free wave solder profile for PXD20-xxDxx 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 8 Feb.2006 20W, DUAL OUTPUT Characteristic Curve Efficiency a. Efficiency with load change under different line condition at room temperature PXD20-12D15 90.00 85.00 Eff(%) 80.00 9V 12V 18V 75.00 70.00 65.00 60.00 55.00 67 133 200 267 334 400) 467 534 600 667 lout(mA PXD20-24D15 95.00 90.00 Eff(%) 85.00 18V 24V 36V 80.00 75.00 70.00 65.00 60.00 67 133 200 267 334 400 467 534 600 667 lout(mA ) PXD20-48D15 90.00 85.00 80.00 18V 24V 36V Eff(%) 75.00 70.00 65.00 60.00 55.00 50.00 67 133 200 267 334 lout(mA 400) 467 534 600 667 9 Feb.2006 20W, DUAL OUTPUT b. Efficiency with line change under different load condition at room temperature PXD20-12D15 90.00 85.00 Eff(%) 80.00 667mA 334mA 67mA 75.00 70.00 65.00 60.00 55.00 9V 10V 11V 12V 13V 14V 15V 16V 17V 18V Vin(V) PXD20-24D15 90.00 85.00 Eff(%) 80.00 75.00 1330mA 665mA 133mA 70.00 65.00 60.00 18V 20V 22V 24V 26V 28V 30V 32V 34V 36V Vin(V) 90.00 PXD20-48D15 85.00 80.00 Eff(%) 75.00 70.00 4000mA 2000mA 400mA 65.00 60.00 55.00 50.00 36V 40V 44V 48V 52V 56V 60V 64V 68V 75V Vin(V) 10 Feb.2006 20W, DUAL OUTPUT Power dissipation curve PXD20-12D15 3.400 pd(w) 2.800 2.200 9V 12V 18V 1.600 1.000 0.400 67 133 200 267 334 lout(mA 400) 467 534 600 667 PXD20-24D15 3.400 pd(w) 2.800 2.200 1.600 18V 24V 36V 1.000 0.400 67 133 200 267 334 lout(mA 400) 467 534 600 667 PXD20-48D15 4.000 3.500 pd(w) 3.000 2.500 2.000 1.500 36V 48V 75V 1.000 67 133 200 267 334 400 467 534 600 667 lout(mA ) 11 Feb.2006 20W, DUAL OUTPUT Output ripple & noise PXD20-12D15 Low Line, Full Load Normal Line, Full Load High Line, Full Load Output Ripple Noise=36.8mV Output Ripple Noise=47.6mV Output Ripple Noise=63.6mV Low Line, Full Load Normal Line, Full Load High Line, Full Load Output Ripple Noise=18.8mV Output Ripple Noise=27.2mV Output Ripple Noise=33.2mV PXD20-24D15 Low Line, Full Load Normal Line, Full Load High Line, Full Load Output Ripple Noise=44.0mV Output Ripple Noise=46.4mV Output Ripple Noise=63.6mV Low Line, Full Load Normal Line, Full Load High Line, Full Load Output Ripple Noise=27.2mV Output Ripple Noise=33.6mV Output Ripple Noise=52.8mV 12 Feb.2006 20W, DUAL OUTPUT PXD20-48D15 Low Line, Full Load Output Ripple Noise=23.2mV Normal Line, Full Load Output Ripple Noise=27.2mV High Line, Full Load Output Ripple Noise=30.4mV Low Line, Full Load Output Ripple Noise=16.8mV Normal Line, Full Load Output Ripple Noise=18.0mV High Line, Full Load Output Ripple Noise=21.6mV 13 Feb.2006 20W, DUAL OUTPUT Transient Peak and Response PXD20-12D15 Low Line, Full Load Normal Line, Full Load High Line, Full Load Transient Peak 64.0mV Transient Peak 62.0mV Transient Peak 73.0mV Transient Response 80uS Transient Response 76uS Transient Response 68uS PXD20-24D15 Low Line, Full Load Normal Line, Full Load High Line, Full Load Transient Peak 87.0mV Transient Peak 103.0mV Transient Peak 98.0mV Transient Response 72uS Transient Response 72uS Transient Response 60uS PXD20-48D15 Low Line, Full Load Normal Line, Full Load High Line, Full Load Transient Peak 48.0mV Transient Peak 47.0mV Transient Peak 45.0mV Transient Response 144uS Transient Response 136uS Transient Response 128uS 14 Feb.2006 20W, DUAL OUTPUT Inrush Current PXD20-12D15 Low Line, Full Load Normal Line, Full Load High Line, Full Load Inrush current=(26.0/10) X1000mA=2600mA Inrush current=(20.6/10) x1000mA=2060mA Inrush current=(13.6/10) x1000mA=1360mA Low Line, Full Load Duration: 480uS Normal Line, Full Load High Line, Full Load Duration: 320uS Duration: 480uS PXD20-24D15 Low Line, Full Load Normal Line, Full Load High Line, Full Load Inrush current=(26.0/10) X500mA=1300mA Inrush current=(22.6/10) x500mA=1130mA Inrush current=(18.8/10) x500mA=940mA Low Line, Full Load Normal Line, Full Load High Line, Full Load Duration: 320uS Duration: 240uS Duration: 240uS 15 Feb.2006 20W, DUAL OUTPUT PXD20-48D15 Low Line, Full Load Normal Line, Full Load High Line, Full Load Inrush current=(62.8/10) X200mA=1256mA Inrush current=(47.2/10) x200mA=944mA Inrush current=(31.0/10) x200mA=620mA Low Line, Full Load Normal Line, Full Load High Line, Full Load Duration: 540uS Duration: 420uS Duration: 280uS 16 Feb.2006 20W, DUAL OUTPUT Input Ripple Current PXD20-12D15 Low Line, Full Load Ripple current=(2.8/10) x10=2.8mA Normal Line, Full Load Ripple current=(3.0/10) x10=3.0mA High Line, Full Load Ripple current=(3.2/10) x10=3.2mA PXD20-24D15 Low Line, Full Load Normal Line, Full Load High Line, Full Load Ripple current= (3.2/10) x10=3.2mA Ripple current=(2.8/10) x10=2.8mA Ripple current=(2.6/10) x10=2.6mA PXD20-48D15 Low Line, Full Load Ripple current=(2.8/10) x10=2.8mA Normal Line, Full Load Ripple current=(3.0/10) x10=3.0mA High Line, Full Load Ripple current=(3.2/10) x10=3.2mA 17 Feb.2006 20W, DUAL OUTPUT Delay Time and Raise Time PXD20-12D15 Normal Line, Full Load Normal Line, Full Load Rise Time=5.382mS DelayTime= 6.24mS PXD20-24D15 Normal Line, Full Load Rise Time=5.797mS Normal Line, Full Load DelayTime= 6.48mS PXD20-48D15 Normal Line, Full Load Rise Time=1.365mS Normal Line, Full Load DelayTime=1.56mS 18 Feb.2006 20W, DUAL OUTPUT Test Configurations Input reflected-ripple current Measurement Test: Component L C Value 12μH 100μF 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%  19 Feb.2006 20W, DUAL OUTPUT Part Number Structure PXD 20 – 48 D 12 Total Output power 20 Watt Output Voltage 12 : 12V 15 : 15V Input Voltage Range 12 : 9~18V 24 : 18~36V 48 : 36~75V Dual Output Mechanical Data 1.00(25.4) 0.50 (12.7) 0.40 (10.2) DIA. 0.04(1.0) 5 Bottom View 1 2 6 0.80(20.3) 4 PIN 1 2 3 4 5 6 PIN CONNECTION FUNCTION + INPUT - INPUT + OUTPUT COMMON - OUTPUT CTRL (Option) 0.60(15.2) 2.00(50.8) 3 0.40 (10.2) 0.40 (10.2) 0.10(2.5) 0.22(5.6) 0.20(5.1) 1.All dimensions in Inches (mm) 2. Pin pitch tolerance ±0.0014(0.35) 3. Tolerance：x.xx±0.02 (x.x±0.5) x.xxx±0.01 (x.xx±0.25) 20 Feb.2006 20W, DUAL OUTPUT Safety and Installation Instruction Isolation consideration The PXD20-xxDxx series features 1.6k Volt DC isolation from input to output, input to case, and output to case. The 9 input to output resistance is greater than 10 ohms. Nevertheless, if the system using the power module needs to receive safety agency approval, certain rules must be followed in the design of the system using the model. In particular, all of the creepage and clearance requirements of the end-use safety requirement must be observed. These documents include UL-60950-1, EN60950-1 and CSA 22.2-960, although specific applications may have other or additional requirements. Fusing Consideration Caution: This power module is not internally fused. An input line fuse must always be used. This encapsulated power module can be used in a wide variety of applications, ranging from simple stand-alone operation to an integrated part of a sophisticated power architecture. To 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 3 A. 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. Minimum Load Requirement 10%(of full load) minimum load required. The 10% minimum load requirement is in order to meet all performance specifications. The PXD20-xxDxx series does not properly maintain regulation and operate under a no load condition. The output voltage drops about 10%. MTBF and Reliability The MTBF of PXD20-xxDxx series of DC/DC converters has been calculated using: 1.MIL-HDBK-217F under the following conditions: Nominal Input Voltage Io = Io, max Ta = 25°C ℃ 5 The resulting figure for MTBF is 6.842× 10 hours. 2.Bell-core TR-NWT-000332 Case I: 50% stress, Operating Temperature at 40°C ℃ (Ground fixed and controlled environment) 6 The resulting figure for MTBF is 1.791× 10 hours. 21