This reference design is an EMI and thermally optimized synchronous buck converter for automotive applications. The circuit is powered from the nominal 12-V battery to provide an output voltage of 3.3 V at 8 A. The design uses a synchronous buck controller operating at a switching frequency of 440 kHz. Forced pulse width modulation or diode emulation mode is jumper selectable. Frequency dithering is used to improve the EMI performance.
| Output voltage options | PMP21795.1 |
|---|---|
| Vin (Min) (V) | 4.5 |
| Vin (Max) (V) | 20 |
| Vout (Nom) (V) | 3.3 |
| Iout (Max) (A) | 8 |
| Output Power (W) | 26.4 |
| 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.
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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
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Design file that contains information on physical board layer of design PCB
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Test report | Automotive EMI and Thermally Optimized Synchronous Buck Converter Ref Design | Dec. 21, 2018 |
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