PMP9707 Reference Design

Texas Instruments

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

Description

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 switchSmall 14.6mm2 two layer PCB footprint with 24 BOM components (excluding test points)Conducted EMI tested (confirms EN550022 and CISPR-22 Class B)
Applications
  • Gas detector
Product Categories
  • Power management

Parts

Part Number Name Companion Part
UCC28722 UCC28722 Buy Datasheet

Bill Of Materials

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Schematic

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Design File

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Test Data

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Other Documents

Title Updated Type Size (KB)
PMP9707 Schematic (Rev. A) 06 May 2015 PDF 111
PMP9707 BOM (Rev. A) 06 May 2015 PDF 105
PMP9707 Gerber 10 Dec 2014 ZIP 188