UCC28742

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High-Efficiency Flyback Controller With Optocoupler Feedback

60-W, Ultra-wide range power supply reference design

This reference design provides a 12-Vdc, 5-Vdc, and 3.3-Vdc output from an ultra-wide range of both AC and DC inputs. A universal 85 to 265-Vac input can be applied to the input of the quasi-resonant flyback. For DC inputs ranging from 24 to 150-Vdc, a boost creates a 150-V bus voltage that is fed (...)

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• TI Devices
  UCC24612
  UCC28742
  TPS564201
  LM5022-Q1
  CSD19531KCS
  + More
  TLVH431A
  - Less

5-V/2-A, 12-V/2.5-A Dual-output flyback reference design with <50-mW standby power

This reference design is a dual-output flyback converter using secondary-side regulation based on the UCC28742. A 5-V rail is regulated within ±1% precision and a cross regulation of a 12-V rail is within -8% to +14% at 25% to 100% load. The design utilizes a single-layer PCB for cost (...)

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• TI Devices
  UCC28742
  ATL431

AC input, 5-V/2-A and 12-V/2.5-A dual-output flyback converter reference design

This reference design is a 40-W dual-output offline converter using UCC28742, a secondary side regulator. A 5-V rail is regulated to within ±1% precision and cross regulation of 12-V rail is within -8%~+14% at 25% to 100% load. The design adopts a single-layer PCB for cost optimization. The (...)

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• TI Devices
  TL431LI
  UCC28742

AC Input, 5-V/1-A and 5-V/1-A dual-output flyback reference design

This design is auxiliary power supply with 5-V/1-A and 5-V/1-A dual output. The line and load regulation of the power supply is designed to be within 1% using the secondary side regulator, UCC28742. The system's reliability is improved through input UVLO and output OVP, OCP, SCP. The four point's (...)

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• TI Devices
  UCC28742
  ATL431

AC Input,12-V/5-A and 50-V/1-A dual-output flyback reference design

This reference design is a 12-V/5-A and 50-V/1-A isolated dual-output auxiliary power supply. Secondary-side regulation improves the line and load regulation using UCC28742. DCM valley-switching operation enable higher efficiency at light load. All components height below 20 mm enable slim TV (...)

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• Bill of Materials
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• TI Devices
  ATL431
  UCC28742

90-VAC - 265-VAC input, non-isolated flyback reference design with multiple output

This offline flyback reference design uses the UCC28742 controller to generate a non-isolated output (15 V at 130 mA) and an isolated output (24 V at 830 mA) from an AC input (90 VAC - 265 VAC). The UCC28742 provides a cost effective and precise constant-voltage and constant-current regulation. The (...)

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• TI Devices
  UCC28742

25/50 Watt flyback reference design for audio applications

The quasi-resonant flyback design is a dual output converter with a 24 Volt output and a 6 Volt output. The voltages that are supplied are important for supplying power in audio applications. The design is very low noise for sensitive audio signals with less than 2.5 % voltage ripple on the 24 V (...)

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• TI Devices
  TLV1117
  LMV431A
  UCC28742

6-Watt Magnetically Resistant Quasi-Resonant Flyback Reference Design

This reference design is a quasi-resonant flyback developed to be resistant to large magnetic fields near the transformer. It has a regulated 3.6 Volt output that can handle up to 1 A of current and secondary 12 V output that can handle 0.2 A.

• Schematic/Block Diagram
• Bill of Materials
• Technical Reference
• Layer Plot
• Assembly Drawings
• CAD Files
• Gerber Files

• TI Devices
  TLV431A
  UCC28742