This reference design is for 4-cell battery charging applications such as vacuum robot or robotic lawn mower, etc. It employs the buck battery charger BQ25672 with a wide input and output range for 1-4 cell battery charging. External ship FET is introduced to minimize the battery leakage current by totally disconnecting all system load from batteries when on standby. The reference design uses a two-layer board to optimize cost and achieve 35-mm x 35-mm small board dimensions.
| Output voltage options | PMP40937.1 |
|---|---|
| Vin (Min) (V) | 17 |
| Vin (Max) (V) | 19 |
| Vout (Nom) (V) | 16 |
| Iout (Max) (A) | 2.5 |
| Output Power (W) | 40 |
| Isolated/Non-Isolated | Non-Isolated |
| Input Type | DC |
| Topology | Buck- Synchronous |
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 schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
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
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| Test report | 4s Battery Charger Solution For Vacuum Robot Reference Design | PDF | HTML | Dec. 21, 2021 |
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