Reference Design - Universal Line Input AC-DC 3W High Side Buck Converter using UCC28720
Description
The PMP9649 reference design is a simple: low-cost high side Buck converter to convert universal AC input voltage (85Vac to 265Vac) to a non-isolated 20V/150mA DC output with UCC28720 controller. BJT is applied as the buck switch for cost optimization: and simplicity is achieved with bulit-in sample and hold regulation function in UCC28720.
Features
- Universal AC Input (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)Greater than 77% full-load efficiency at high lineConducted EMI tested (confirms EN550022 and CISPR-22 Class B)
Applications
Product Categories
- Power management
| Download the bill of materials for PMP9649 | Download |
Design File
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Download the design file for PMP9649Test Data
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Download the test file for PMP9649| Title | Updated | Type | Size (KB) | |
|---|---|---|---|---|
| PMP9649 Gerber | 10 Dec 2014 | ZIP | 188 | |
| PMP9649 BOM | 10 Dec 2014 | 108 | ||
| PMP9649 Schematic | 10 Dec 2014 | 80 |