Case Study

Automotive H-Bridge Controller

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

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