Automotive power seat reference design
Description
This reference design provides the drive and control circuits for motor-driven applications such as automotive power seats: using both bi-directional and unidirectional motor drives. It demonstrates how to drive brushed DC motors with a small board footprint: a high degree of robustness and full diagnostic features. The design illustrates solutions for adding motor-driven comfort and convenience options: as well as replacing relay-based circuits with smarter full-featured devices.
Features
- Bi-directional drive for brushed DC motors - 30-A peak with external FETs and 10-A peak with integrated FETsUnidirectional drive for lumbar pump and valveMultiplexed current sense signals from all motorsReverse battery and load dump protectionSmall board footprint for each drive circuit