SBASAR3B December 2024 – November 2025 AMC0311D
PRODUCTION DATA
The following image illustrates a simplified schematic of an AC inverter for a three-phase motor drive. The AMC0x11D is used for DC link voltage sensing. In the power domain, the DC link voltage is divided down to a 2V level across the bottom resistor (RSNS) of a high-impedance resistive divider. The voltage across RSNS is sensed by the AMC0x11D. The low-side gate driver supply is regulated to a 5V level to power the high-voltage side of the AMC0x11D. In the signal domain, on the opposite side of the isolation barrier, the AMC0x11D outputs a voltage proportional to the DC link voltage.