PMP9235

120VAC Input 5V/250mA Flyback Converter With BJT Switch Reference Design

PMP9235

Design files

Overview

This reference design creates a 5V at 250mA from a 120VAC Input. The UCC28720 primary side controller with a BJT power switch provides a low cost design. It is important to note the outputs are only functionally (not for safety) isolated from the input.

Output voltage options PMP9235.1
Vin (Min) (V) 85
Vin (Max) (V) 132
Vout (Nom) (V) 5
Iout (Max) (A) .25
Output Power (W) 1.25
Isolated/Non-Isolated Isolated
Input Type AC
Topology Flyback- DCM^Flyback- Non Sync^Flyback- Quasi Resonant

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

SLUUAY3.PDF (1349 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

SLURAP7.PDF (105 K)

Detailed schematic diagram for design layout and components

SLURAP8.PDF (79 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

SLUC530.ZIP (171 K)

Design file that contains information on physical board layer of design PCB

SLUUAY4.PDF (150 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Flyback controllers

UCC28720Constant-voltage, constant-current controller with primary-side regulation for bipolar power devices

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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View all 3
Type Title Date
Technical article Power Tips: Low-power Bias supply - Linear, Buck, or Flyback? Aug. 05, 2014
Technical article Power Tips: Powering the IoT in Our Homes Jun. 11, 2014
Test report PMP9235 Test Results Feb. 06, 2014

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