Automotive high-voltage battery pack monitor with voltage and insulation-resistance sensing

The device can be used to measure divided down

high voltage nodes in a battery system. It can measure voltage

across Fuse, Contactors and check isolation voltage in battery

junction box (BJB) system. There are 15 GPIOs/auxiliary inputs that

can be used for HV measurements, thermistor measurements and driving

relays. There are 4 SW outputs that can be used to drive MOSFET

switches in the measurement path. The device can function as a SPI

HUB and interface with up to 8 separate SPI devices/groups. The

isolated bi-directional daisy chain ports support both capacitor and

transformer based isolation. The device can also communicate with

MCU over SPI and UART.