Case Study

Automotive H-Bridge Controller

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

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Features
  • 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
Process
  • 0.18um High Voltage BCD
DFT
  • Full control and observability for analog functions, full scan for digital logic, BIST for OTP and boundary scan for I/O’s
Toolchain
  • Cadence: Innovus, Liberate, Virtuoso, ADE, Spectre
  • Synopsys: Synopsys DC, Primetime, Formality
  • Mentor: Calibre,  Tessent
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