Automotive wide VIN front-end reference design for digital cockpit processing units
Description
This reference design shows a complete 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/3-A rail from the 5-V output. Another independent 3.3-V rail with 3 A from KL30 is provided by the LM63635-Q1 synchronous buck converter.
Features
- Uses low-loss smart diode controller for input reverse polarity protectionIncludes an input filter to minimize the reflected ripple of the buck convertersHigh efficiency across all rails for low power dissipation in space constrained applicationsVery good load transient performance on the 3.3-V/15-A rail with onboard loadSmall system standby power because of low-Iq capability of LM5143-Q1 and LM63635-Q1
Applications
- Automotive radio tuner
- Automotive head unit
- Digital cockpit processing unit
- Aftermarket head unit
Product Categories
- Power management