Infineon Technologies SPOC™ Wire Guard Power Switch IC
Infineon Technologies SPOC™ Wire Guard Power Switch IC features a 24‑bit SPI interface with CRC and driving loads up to a nominal current of 34.5A. This switch IC integrates advanced protection mechanisms such as I2t wire and system protection, overcurrent protection, and load shedding for power supply protection. The BTS80009-SWPF-1ES switch IC supports capacitive load switching and handles inrush currents. This switch is compliant with ISO 26262 safety element out of context for safety requirements up to ASIL D. Typical applications include fail-operational power supply, fuse and relay replacement in 12V power distribution, ECU main switch, and load shedding for power supply protection.
Features
- High-side power switch with diagnosis and embedded protection
- Daisy chain-capable 24-bit SPI with CRC
- Embedded I2t wire and system protection
- Load shedding for power supply protection
- Capacitive load switching mode
- 1.1mΩ to 5.4mΩ RDS(on) range
- Up to 28V operating voltage
- External commanded fast switch-off
- Low operating current (idle mode) for active supply during parking
- ISO 26262 safety element out of context for safety requirements up to ASIL D
Applications
- Fail operational power supply
- Fuse and relay replacement in 12V power distribution
- ECU main switch
- Load shedding for power supply protection
- Active supply during parking mode
Block Diagram
Application Circuit Diagram
Published: 2026-06-25
| Updated: 2026-07-27