This reference design provides 5 V, 3.3 V and 1.0 V for powering an automotive microcontroller using three buck converters with a pre-boost converter. The pre-boost regulator can provide 1.25-A continuous output current at 8.5 V from a 3.2-V input voltage. The purpose of this design is to fit the buck solution within a small board area, using mainly single-sided component placement.
| Output voltage options | PMP31245.1 | PMP31245.2 | PMP31245.3 | PMP31245.4 |
|---|---|---|---|---|
| Vin (Min) (V) | 5 | 5 | 8.5 | 3.2 |
| Vin (Max) (V) | 5 | 5 | 36 | 36 |
| Vout (Nom) (V) | 1 | 3.3 | 5 | 8.5 |
| Iout (Max) (A) | 4 | 1 | 2 | 1.25 |
| Output Power (W) | 4 | 3.3 | 10 | 10.625 |
| Isolated/Non-Isolated | Non-Isolated | Non-Isolated | Non-Isolated | Non-Isolated |
| Input Type | DC | DC | DC | DC |
| Topology | Buck- Synchronous | Buck- Synchronous | Buck- Synchronous | Boost- Non Sync |
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 | Discrete Power Tree Reference Design forAutomotive MCU | PDF | HTML | Jul. 17, 2023 |
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