Integrated Power Front End and Multi-Phase Processor Supply Automotive Reference Design
Description
This processor supply reference design is an automotive power solution for use in high performance: single-core-voltage application processors in advanced driver assistance systems (ADASs). This design can support core supply currents up to 10 A at 0.9 V. The design can also operate with a wide input voltage range: withstand reverse battery conditions: and support start-stop and cold-crank down to a 3.5-V input with an undisturbed output. All switching frequencies in this solution are above 2 MHz. The design has an inherently lower electromagnetic interference (EMI) and higher efficiency due to the multi-phase configuration and integration of supplies. This reference design also provides results for conducted emissions tests for CISPR 25 Class 5.
Features
- 5A integrated 2.2MHz synchronous wide input voltage buck converterSmart diode reverse battery protection for minimum voltage drop (typical 20mV)Operating range 3.5 - 36V: supports start-stop and cold-crankInterleaved four-phase core-voltage supply minimizing ripple: EMI and inductor sizeOptimized for CISPR 25 Class 5 conducted emissionsSmall switched cap boost for 5V CAN supply reduces solution size and BOM cost
Applications
- Front camera
- Surround view system ECU
- ADAS domain controller
- Mirror replacement/camera mirror system
- Drive assist ECU
- Gesturing
- Driver vital sign monitoring
- Obstacle detection sensor
- Vehicle occupant detection sensor
- Conditionally automated drive controller
Product Categories
- Power management