This reference design shows a power tree for automotive digital cockpit applications. The LM74700-Q1 provides low-loss reverse polarity protection to the system followed by an input filter. The LM5143-Q1 dual-synchronous buck converter provides a 3.3-V rail, which can support up to 15 A for a processor module and a 5-V rail with 3 A from KL30. The TPS62810-Q1 synchronous buck converter provides a 1.1-V and 3-A rail from 5-V output. Another independent 3.3-V rail with 3 A from KL30 is provided by the LM63635-Q1 synchronous buck converter.
| Output voltage options | PMP30670.1 | PMP30670.2 | PMP30670.3 | PMP30670.4 |
|---|---|---|---|---|
| Vin (Min) (V) | 6 | 6 | 6 | 4.5 |
| Vin (Max) (V) | 36 | 36 | 36 | 5.5 |
| Vout (Nom) (V) | 5 | 3.3 | 3.3 | 1.1 |
| Iout (Max) (A) | 3 | 15 | 3 | 3 |
| Output Power (W) | 15 | 49.5 | 9.9 | 3.3 |
| Isolated/Non-Isolated | Non-Isolated | Non-Isolated | Non-Isolated | Non-Isolated |
| Input Type | DC | DC | DC | DC |
| Topology | Buck- Synchronous | Buck- Synchronous | Buck- Synchronous | Buck- Synchronous |
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Test report | Automotive Wide VIN Front-End Ref Design for Digital Cockpit Processing Units | Jul. 30, 2019 |
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