This reference design uses a tiny automotive buck converter to support a 5-V rail by input voltage range 6.5-V up to 32-Vpk surge. The layout and design are optimized to pass CISPR-25. The design is equipped with a two-stage input filter to minimize conducted emissions and a solid ground plane to attenuate radiated emissions in short wave range. Power stage capacitors are routed back-to-back to minimize parasitic inductances at forward and freewheeling loop. Highlights of this design are a cost-effective two-layered board (typical for automotive cluster and display applications), single-side assembly and keeping the solid ground plane to pass EMI.
| Output voltage options | PMP30794.1 |
|---|---|
| Vin (Min) (V) | 6.5 |
| Vin (Max) (V) | 32 |
| Vout (Nom) (V) | 5 |
| Iout (Max) (A) | 2.5 |
| Output Power (W) | 12.5 |
| Isolated/Non-Isolated | Non-Isolated |
| Input Type | DC |
| Topology | Buck- Integrated Switch^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
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 | 2-MHz Synchronous 5-V Buck Reference Design | Mar. 12, 2020 |
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