US Line (120VAC +/- 15%) Input, 12V/850mA Output Bias Supply Reference Design PMP20421 (ACTIVE)

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Key Document

Description

The PMP20421 is a low cost bias supply reference design with 12V/850mA output from 120VAC input. This design uses BJT with UCC28722 primary-side regulation BJT controller and single layer PCB to reduce the overall BOM cost.

Features
  • 120VAC nominal (102VAC to 138VAC) 50/60Hz input to 12V/850mA output
  • Conduction EMI tested
  • Single layer PCB design
  • Flyback with bipolar junction transistor (BJT) switch
  • Test report available

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Schematic/Block Diagram

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Design Guide

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Design Files

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Parametrics
 PMP20421.1
(Output Voltage 1)
Vin (Min) (V)102
Vin (Max) (V)138
Vout (Nom) (V)12
Iout (Max) (A).85
Output Power (W)10.2
Isolated/Non-IsolatedIsolated
Input TypeAC
TopologyFlyback- DCM

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
UCC28722  Low-Cost CVCC Flyback Controller With Primary-Side Regulation for Bipolar Power Device  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)
UCC28722 Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 2949 16 May 2017
Design files (6)
Title Type Size (KB) Date
PDF 136 19 Jun 2017
ZIP 1227 16 May 2017
ZIP 495 16 May 2017
PDF 283 16 May 2017
PDF 82 16 May 2017
PDF 102 16 May 2017

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