PMP9707

Low-cost Universal AC-DC Input Non-isolated Buck Conv using BJT for 12V/0.2A Output Reference Design

PMP9707

Design files

Overview

The PMP9707 reference design uses Buck converter to convert universal AC input voltage (85Vac to 265Vac) to a 12V/200mA DC output with UCC28722 controller. BJT is applied to the buck switch for cost optimization, and simplicity is achieved with bulit-in sample and hold regulation function in UCC28722.

Features
  • Universal AC Input Wide Vin capability (85Vac to 265Vac)
  • Simple, Low cost solution with BJT employed as Buck switch
  • Small 14.6mm2 two layer PCB footprint with 24 BOM components (excluding test points)
  • Conducted EMI tested (confirms EN550022 and CISPR-22 Class B)
Output voltage options PMP9707.1
Vin (Min) (V) 85
Vin (Max) (V) 265
Vout (Nom) (V) 12
Iout (Max) (A) .2
Output Power (W) 2.4
Isolated/Non-Isolated Non-Isolated
Input Type AC
Topology Buck- Non Sync
Industrial
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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.

TIDU687.PDF (1060 K)

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

TIDRC39A.PDF (111 K)

Detailed schematic diagram for design layout and components

TIDRC40A.PDF (105 K)

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

TIDC808.ZIP (188 K)

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

Products

Includes TI products in the design and potential alternatives.

Flyback controllers

UCC28722Low-Cost CVCC Flyback controller With primary-side regulation for bipolar Power Device

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report PMP9707 Test Results Dec. 10, 2014

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