PXF40-xxDxx Dual Output DC/DC Converter 9 to 18 Vdc and 18 to 36 Vdc and 36 to 75 Vdc input, 3.3 to 15 Vdc Dual Output, 40W Features Dual output current up to 8A 40 watts maximum output power 2:1 wide input voltage range Six-sided continuous shield High efficiency up to 89% Low profile: 2.00 x 2.00 x 0.40 inch (50.8 x 50.8 x 10.
40W, Dual Output Absolute Maximum Rating Parameter Model Input Voltage Continuous Transient (100ms) Operating Ambient Temperature (with derating) Operating Case Temperature Storage Temperature Min 12Dxx 24Dxx 48Dxx 12Dxx 24Dxx 48Dxx 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 xxD12 11.88 12 xxD15 14.85 15 3.3/5 Max Unit 12.12 15.
40W, Dual Output Input Specification Parameter Operating Input Voltage Input Current (Maximum value at Vin = Vin(nom); Full Load) Model Min Typ Max 12Dxx 9 12 18 24Dxx 18 24 36 48Dxx 36 48 75 12D12 4444 12D15 4321 12D3305 3416 24D12 2169 24D15 2108 24D3305 1689 48D12 1084 48D15 1054 48D3305 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
0W, Dual Output General Specification Parameter Efficiency (Vin = Vin(nom) ; Full Load ; TA=25°C) Model Min Typ 12D12 85 12D15 85 12D3305 85 24D12 87 24D15 87 24D3305 86 48D12 87 48D15 87 48D3305 88 Max Unit % Isolation Voltage Input to Output All Input to Case, Output to Case 1600 Isolation Resistance All Isolation Capacitance All Switching Frequency Weight 1 GΩ 1000 pF xxD12 xxD15 master (5Vo) 300kHz slave (3.
40W, Dual Output Characteristic Curves All test conditions are at 25°C.The figures are for PXF40-12D12 Efficiency Versus Output Current Efficiency Versus Input Voltage.
40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C.The figures are for PXF40-12D12 Typical Output Ripple and Noise.
40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C.The figures are for PXF40-12D15 Efficiency Versus Output Current Efficiency Versus Input Voltage.
40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C.The figures are for PXF40-12D15 Typical Output Ripple and Noise.
40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C.The figures are for PXF40-12D3305 Efficiency Versus Output Current Power Dissipation Versus Output Current Efficiency Versus Input Voltage.
40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C.The figures are for PXF40-12D3305 Typical Output Ripple and Noise. Vin = Vin(nom), Full Load +5Vo: Transient Response to Dynamic Load Change from 100% to 75% to 100% of Full Load ; Vin = Vin(nom) +3.
40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C.The figures are for PXF40-24D12 Efficiency Versus Output Current Efficiency Versus Input Voltage.
40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C.The figures are for PXF40-24D12 Typical Output Ripple and Noise.
40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C.The figures are for PXF40-24D15 Efficiency Versus Output Current Efficiency Versus Input Voltage.
40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C.The figures are for PXF40-24D15 Typical Output Ripple and Noise.
40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C.The figures are for PXF40-24D3305 Efficiency Versus Output Current Power Dissipation Versus Output Current Efficiency Versus Input Voltage.
40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C.The figures are for PXF40-24D3305 Typical Output Ripple and Noise. Vin = Vin(nom), Full Load +5Vo: Transient Response to Dynamic Load Change from 100% to 75% to 100% of Full Load ; Vin = Vin(nom) +3.
40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C.The figures are for PXF40-48D12 Efficiency Versus Output Current Efficiency Versus Input Voltage.
40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C.The figures are for PXF40-48D12 Typical Output Ripple and Noise.
40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C.The figures are for PXF40-48D15 Efficiency Versus Output Current Efficiency Versus Input Voltage.
40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C.The figures are for PXF40-48D15 Typical Output Ripple and Noise.
40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C.The figures are for PXF40-48D3305 Efficiency Versus Output Current Power Dissipation Versus Output Current Efficiency Versus Input Voltage.
40W, Dual Output Characteristic Curves (Continued) All test conditions are at 25°C.The figures are for PXF40-48D3305 Typical Output Ripple and Noise. Vin = Vin(nom), Full Load +5Vo: Transient Response to Dynamic Load Change from 100% to 75% to 100% of Full Load ; Vin = Vin(nom) +3.
40W, Dual 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.
40W, Dual 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: PXF40-12Dxx Component Value C1 6.8uF C3, C4 1000pF Voltage 50V 2KV 1812 MLCC 1808 MLCC PXF40-24Dxx Component Value C1 6.8uF C3, C4 1000pF Voltage 50V 2KV 1812 MLCC 1808 MLCC PXF40-48Dxx Component Value C1 2.
40W, Dual 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: PXF40-12Dxx Component Value C1, C3 4.7uF C5, C6 1000pF L1 450uH Voltage 50V 2KV ---- Reference 1812 MLCC 1808 MLCC Common Choke PXF40-24Dxx Component Value C1, C3 6.
40W, Dual Output EMC Considerations (Continued) Common Choke L1 is defined as follows: ■ PMT-048 L: 450μH±35% / DCR: 25mΩ, max A height: 9.8 mm, Max ■ PMT-053 L-830μH±35% / DCR- 1mΩ, 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.
40W, Dual 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.
40W, Dual Output Heat Sink Consideration Use heat-sink (7G-0026A) for lowering temperature and higher reliability of the converter.
40W, Dual 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 a 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.
40W, Dual 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 1 2 3 4 5 6 7 8 9 PIN CONNECTION EXTERNAL OUTPUT TRIMMING DUAL +INPUT -INPUT CTRL NO PIN +OUTPUT COMMON COMMON -OUTPUT TRIM Output can be externally trimmed by using the method shown below. DUALPOSITIVE +INPUT -INPUT CTRL 3.
40W, Dual 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.
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 module. 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.
40W, Dual Output Soldering and Reflow Consideration Lead free wave solder profile for PXF40-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.
40W, Dual Output Packaging Information 10 PCS per TUBE Part Number Structure PXF 40 – 48 D 12 Max. Output Power 43.2Watts Output Voltage 3.3／05 : 3.3／05 Vdc 12 : 12Vdc 15 : 15Vdc Input Voltage Range 12 : 9 ~ 18V 24 : 18 ~ 36V 48 : 36 ~ 75V Dual Output Model Number Input Range Output Voltage Output Current (4) Input Current (2) (3) Eff (%) Min.
40W, Dual 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. To maximum flexibility, internal fusing is not included; however, to achieve maximum safety and system protection, always use an input line fuse.
