This reference design is an AC/DC battery-backup charger with two outputs: system and battery. A 4-SW bidirectional buck-boost charges the battery and supplies system load. An optional microcontroller disables main power sections, reducing stand-by power while collecting parameters for telemetry.
| Output voltage options | PMP31276.1 | PMP31276.2 | PMP31276.3 |
|---|---|---|---|
| Vin (Min) (V) | 85 | 350 | 23.5 |
| Vin (Max) (V) | 265 | 420 | 24.5 |
| Vout (Nom) (V) | 400 | 24 | 24 |
| Iout (Max) (A) | .75 | 12 | 12 |
| Output Power (W) | 300 | 288 | 288 |
| Isolated/Non-Isolated | Non-Isolated | Isolated | Non-Isolated |
| Input Type | AC | DC | DC |
| Topology | PFC- Multiphase | Half Bridge- LLC | Buck Boost- 4 Switch |
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Download ready-to-use system files to speed your design process.
Test results for the reference design, including efficiency graphs, test prerequisites and more
Detailed overview of design layout for component placement
Complete listing of design components, reference designators, and manufacturers/part numbers
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Detailed schematic diagram for design layout and components
Includes TI products in the design and potential alternatives.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Test report | 288W PFC, LLC and Bidirectional Battery Charger Reference Design | PDF | HTML | Jul 2, 2026 |
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