This automotive point-of-load power supply reference design features complete front-end protection in a small overall solution size. The system can clamp fast high-voltage electrical transients and maintain operation through these events. It can also properly respond to a reverse battery polarity event and shut down appropriately. This three-output design employs sequencing of two buck regulators to ensure proper power-on and power-down timing, and features an input pi filter to reduce conducted EMI. The design accepts an input voltage of 5 V to 36 V and provides outputs of 3.3 V, 1.2 V, and 1.8 V. This supply is capable of supplying 2 A on the 1.8 V and 1.2-V outputs, while the 3.3-V output simultaneously supplies 3.55 A.
| Output voltage options | PMP15023.1 | PMP15023.2 | PMP15023.3 |
|---|---|---|---|
| Vin (Min) (V) | 5 | 5 | 5 |
| Vin (Max) (V) | 36 | 36 | 36 |
| Vout (Nom) (V) | 3.3 | 1.2 | 1.8 |
| Iout (Max) (A) | 3.55 | 2 | 2 |
| Output Power (W) | 11.715 | 2.4 | 3.6 |
| Isolated/Non-Isolated | Non-Isolated | Non-Isolated | Non-Isolated |
| Input Type | DC | DC | DC |
| Topology | Buck- Integrated Switch | Buck- Integrated Switch | Buck- Integrated Switch |
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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Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Test report | Automotive Wide-VIN to Point-of-Load Power Supply Reference Design (Rev. A) | Mar. 26, 2020 |
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