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PYD20 Manual
DC-DC Converter Isolated, 20W, 2x1", PCB Mount
Content:
1.
Product Description.............................................2
2.
Product Features .................................................2
3.
Intended Use .......................................................2
4.
Installation Instructions ......................................3
5.
Functional Description ........................................4
6.
Functional Diagram.............................................4
7.
Recommended Wiring Scheme...........................5
8.
Product Nomenclature and List of Models ........6
9.
Short-form Data ..................................................6
10. Efficiency and power dissipation curves ............8
11. Physical Dimensions and Pin Layout:................10
12. Isolation and Dielectric Strength......................11
13. Protection Features ...........................................11
14. Approvals and Regulatory Compliances ..........12
15. Rail Applications................................................12
16. Thermal Consideration and Derating ..............13
17. EMC Considerations ..........................................13
18. Remote ON/OFF Function .................................15
19. Output Voltage Adjustment.............................16
20. Hold-up Time Circuitry ......................................17
21. Cleaning Process and Soldering Profile............17
All parameters are typical values specified at nominal input voltage, nominal output load, 25°C ambient and after a 5 minutes run-in time unless
otherwise noted. The information presented in this document is believed to be accurate and reliable and may change without notice.
For additional information, please visit https://product.tdk.com/en/power/py.
PYD20 Series
Instruction and Application Manual
DOC-ID: 260921 - Issue 1
1/17
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Summary of Contents for TDK-Lambda PYD20 Series
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Page 1: Table Of Contents
PYD20 Manual DC-DC Converter Isolated, 20W, 2x1”, PCB Mount PYD20 Series Instruction and Application Manual Content: Product Description..........2 Product Features ..........2 Intended Use ............2 Installation Instructions ........3 Functional Description ........4 Functional Diagram..........4 Recommended Wiring Scheme......5 Product Nomenclature and List of Models ..6 Short-form Data ..........6... -
Page 2: Product Description
RODUCT ESCRIPTION The PYD20 series are board mount 20W DC-DC converters in a rugged 2 x 1 inch housing with silicone potting. They provide a regulated and galvanically isolated output, available as either single voltage or ± dual output voltages. -
Page 3: Installation Instructions
PYD20 Manual DC-DC Converter Isolated, 20W, 2x1”, PCB Mount 4. I NSTALLATION NSTRUCTIONS Before operating this device, please read this manual thoroughly and retain for future reference! This device may only be installed and put into operation by qualified personnel. If damage or malfunction should occur during operation, immediately turn power off and send device to the factory for inspection. -
Page 4: Functional Description
PYD20 Manual DC-DC Converter Isolated, 20W, 2x1”, PCB Mount 5. F UNCTIONAL ESCRIPTION The output is electronically protected against no-load, overload and short circuit. In case of an overload or short circuit, the device will operate intermittently (hiccup mode). The device can supply resistive and inductive loads. Avoid loads with large input capacitances. -
Page 5: Recommended Wiring Scheme
PYD20 Manual DC-DC Converter Isolated, 20W, 2x1”, PCB Mount 7. R ECOMMENDED IRING CHEME EMI Filter FUSE +Vin +Vout Load Source DC-DC Converter -Vin -Vout Fuse F1: The DC-DC converter is not internally fused. An external input fuse must always be used. Use a 3.15A slow-blow fuse. -
Page 6: Product Nomenclature And List Of Models
PYD20 Manual DC-DC Converter Isolated, 20W, 2x1”, PCB Mount 8. P RODUCT OMENCLATURE AND IST OF ODELS Product Nomenclature: Family Name Size Output Power Input Voltage Output Type Output Voltage Options D = 2 x 1" 20 = 20W 72W = 8.5-160V S = Single Output 05 = 5V Remote ON/OFF:... - Page 7 PYD20 Manual DC-DC Converter Isolated, 20W, 2x1”, PCB Mount Output voltage accuracy range ±1% Factory setting Line regulation Max. ±0.2% Between 8.5 and 160Vdc Load regulation Max. ±0.2% For single output models Max. ±1.0% For dual output models Transient response recovery time 250µs For a 75% to 100% load step Cross regulation (dual models)
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Page 8: Efficiency And Power Dissipation Curves
PYD20 Manual DC-DC Converter Isolated, 20W, 2x1”, PCB Mount 10. E FFICIENCY AND POWER DISSIPATION CURVES PYD20-72WS05: Efficiency and power losses vs. output load PYD20-72WS12: Efficiency and power losses vs. output load PYD20-72WS15: Efficiency and power losses vs. output load PYD20-72WD12: Efficiency and power losses vs. - Page 9 PYD20 Manual DC-DC Converter Isolated, 20W, 2x1”, PCB Mount PYD20-72WD15: Efficiency and power losses vs. output load PYD20-72WD24: Efficiency and power losses vs. output load All parameters are typical values specified at nominal input voltage, nominal output load, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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Page 10: Physical Dimensions And Pin Layout
PYD20 Manual DC-DC Converter Isolated, 20W, 2x1”, PCB Mount 11. P HYSICAL IMENSIONS AND AYOUT Length 50.8mm, 2.0’’ Width 25.4mm, 1.0’’ Height 10.2mm, 0.4’’ Weight 28.5g / 0.063lb Case material Plastic Potting material Silicone Pin material Base: copper Plating: nickel with matte tin Inch tolerances: x.xx±0.02, x.xxx±0.01 Pin diameter ±0.004... -
Page 11: Isolation And Dielectric Strength
PYD20 Manual DC-DC Converter Isolated, 20W, 2x1”, PCB Mount 12. I SOLATION AND IELECTRIC TRENGTH The output voltage is floating and has no ohmic connection to the input. Input Output Hi-pot tests may be repeated by the customer using appropriate test equipment, which applies the voltage with a slow ramp (2s up and 2s (COM) down). -
Page 12: Approvals And Regulatory Compliances
PYD20 Manual DC-DC Converter Isolated, 20W, 2x1”, PCB Mount 14. A PPROVALS AND EGULATORY OMPLIANCES EU Declaration of Conformity includes Low-Voltage and RoHS Directive UKCA UK Declaration of Conformity includes Electrical Safety and RoHS Directive EN 62368-1 Safety requirements for audio/video, information and communication technology equipment UL 62368-1 Recognized component for audio/video, information and communication technology... -
Page 13: Thermal Consideration And Derating
PYD20 Manual DC-DC Converter Isolated, 20W, 2x1”, PCB Mount 16. T HERMAL ONSIDERATION AND ERATING The DC-DC converters operate over a wide temperature range. Even if the heat generated by the DC-DC converters are very low, it must be removed. This can be done either by convection cooling, forced air cooling or radiation. - Page 14 PYD20 Manual DC-DC Converter Isolated, 20W, 2x1”, PCB Mount EMC Emission Recommended external EMI filter for EN 55011, EN 55032 Class A and EN 50121-3-2 The placement of components and the routing of traces on the pc-board must be carried out according to EMC aspects.
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Page 15: Remote On/Off Function
PYD20 Manual DC-DC Converter Isolated, 20W, 2x1”, PCB Mount 18. R ON/OFF F EMOTE UNCTION The device is equipped with a remote ON/OFF function to turn the output ON or OFF. Two logics are possible. With the positive logic (standard version), the output switches OFF as soon as pin 2 (-Vin) and pin 6 (RC) are linked or a voltage of less than 1.2V is present. -
Page 16: Output Voltage Adjustment
PYD20 Manual DC-DC Converter Isolated, 20W, 2x1”, PCB Mount 19. O UTPUT OLTAGE DJUSTMENT For models with only one output, the output voltage can be adjusted in the range of -20%/+15%. + Vout 3 R trim- DC-DC down To increase the output voltage, connect an external resistor between the TRIM 4 Converter R trim-... -
Page 17: Hold-Up Time Circuitry
PYD20 Manual DC-DC Converter Isolated, 20W, 2x1”, PCB Mount 20. H IRCUITRY The hold time is defined as the time period during which the DC-DC converter output remains active after a loss of input power. The DC-DC converter itself is not capable of providing a hold time. For this, an external circuit with a large hold-up (storage capacitor) is required.
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