15-W opto-regulated multi-output flyback converter reference design for auxiliary supply
PMP30191
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Key Document

Description

This reference design is an isolated opto-regulated, multi-output, 15-W flyback converter. Both 28-V and 7-V outputs are contributing to the voltage regulation on secondary side, while a third output (14 V at 100 mA) is referenced to the primary side ground. This converter has low stand-by power, between 45 mW and 61 mW in the whole Vin range, and has good efficiency at full load (88.8% to 89.6%).

Features
  • 89% peak efficiency and less than 61 mW stand-by loss
  • Multiple-output - 28 V/500 mA and 7 V/50 mA at secondary, 14 V/100 mA at primary
  • Typically suitable for bias supply in AC/DC converters with universal-mains and PFC boost

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Parametrics
 PMP30191.1
(Output Voltage 1)
PMP30191.2
(Output Voltage 2)
PMP30191.3
(Output Voltage 3)
Vin (Min) (V)120120120
Vin (Max) (V)420420420
Vout (Nom) (V)28147
Iout (Max) (A).5.1.05
Output Power (W)141.4.35
Isolated/Non-IsolatedIsolatedNon-IsolatedIsolated
Input TypeDCDCDC
TopologyFlyback- Quasi ResonantFlyback- Quasi ResonantFlyback- Quasi Resonant

TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TL431  Adjustable precision shunt regulator  Voltage references  Sample & Buy Not Available
UCC28740  Constant-voltage, constant-current Flyback controller Using Opto-Coupler Feedback  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
TL431 Download Download
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Download -
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UCC28740 Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 1973 09 May 2019
Design files (6)
Title Type Size (KB) Date
ZIP 609 09 May 2019
ZIP 902 09 May 2019
PDF 807 09 May 2019
PDF 237 09 May 2019
PDF 96 09 May 2019
PDF 130 09 May 2019

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