This reference design is a flexible and compact power supply providing 5-V and 3.3-V output rails to supply the C2000™ MCU. The design includes two LMR34206-Q1 ultra-small synchronous step-down converter devices and one TPS3850-Q1 precision voltage supervisor with programmable window watchdog timer. In addition, a single SN74LVC2G74-Q1 D-type flip-flop is added to provide the compatibility of the watchdog with the C2000™ MCU startup behavior.
| Output voltage options | PMP31273.1 | PMP31273.2 |
|---|---|---|
| Vin (Min) (V) | 12 | 12 |
| Vin (Max) (V) | 24 | 24 |
| Vout (Nom) (V) | 5 | 3.3 |
| Iout (Max) (A) | .6 | .6 |
| Output Power (W) | 3 | 1.98 |
| Isolated/Non-Isolated | Non-Isolated | Non-Isolated |
| Input Type | DC | DC |
| Topology | 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
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 | Automotive Dual Buck Converter Ref. Des. for C2000 MCU w/ Supervisor & Watchdog | PDF | HTML | Oct. 16, 2023 |
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