This reference design is an automotive front-end power supply able to provide 16 W for the 12-V car battery. The first stage is a pre-boost LM5150-Q1 to maintain a stable, mid-rail voltage of 8.5 V during cold-crank operation. Two downstream buck converters are able to handle jump start requirements of up to 40 V. Additionally, an LC filter is built in to improve EMI behavior.
| Output voltage options | PMP30548.1 | PMP30548.2 | PMP30548.3 |
|---|---|---|---|
| Vin (Min) (V) | 3.2 | 8.5 | 8.5 |
| Vin (Max) (V) | 40 | 40 | 40 |
| Vout (Nom) (V) | 8.5 | 5 | 3.3 |
| Iout (Max) (A) | 2.3 | 1.6 | 2.3 |
| Output Power (W) | 19.55 | 8 | 7.59 |
| Isolated/Non-Isolated | Non-Isolated | Non-Isolated | Non-Isolated |
| Input Type | DC | DC | DC |
| Topology | Boost- Non Sync | Buck- Synchronous | Buck- Synchronous |
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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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
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Design file that contains information on physical board layer of design PCB
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Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Test report | Small automotive front-end 16-W power reference design | Jan. 25, 2019 |
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