Case Study

Automotive H-Bridge Controller

Automotive H-bridge controller design to meet ISO26262 ASIL-D functional safety requirements

h bridge controller case study
  • H bridge controller with four 0.5A drivers
  • Design to be meet ISO26262 ASIL-D
  • SPI interface with error detection and correction
  • Two independent 13b ΣΔ ADC’s for current measurement
  • High dynamic range sense amplifier with 36V common mode range
  • OTP memory with CRC checking
  • Multiple independent voltage references and LDOs
  • Extensive monitoring and fault detection circuits
  • 0.18um High Voltage BCD
  • Full control and observability for analog functions, full scan for digital logic, BIST for OTP and boundary scan for I/O’s
  • Cadence: Innovus, Liberate, Virtuoso, ADE, Spectre
  • Synopsys: Synopsys DC, Primetime, Formality
  • Mentor: Calibre,  Tessent