The MCT8316Z device is an integrated 100-mΩ (combined high-side and low-side MOSFET's on-state resistance) driver for 3-phase motor-drive applications. The device reduces system component count, cost, and complexity by integrating three half-bridge MOSFETs, gate drivers, charge pump, linear regulator for the external load and buck regulator. A standard serial peripheral interface (SPI) provides a simple method for configuring the various device settings and reading fault diagnostic information through an external controller. Alternatively, a hardware interface (H/W) option allows for configuring the most commonly used settings through fixed external resistors.

The architecture uses an internal state machine to protect against short-circuit events, and protect against dv/dt parasitic turnon of the internal power MOSFET.

The MCT8316Z device integrates three-phase sensored trapezoidal commutation using analog or digital hall sensors for position detection.

In addition to the high level of device integration, the MCT8316Z device provides a wide range of integrated protection features. These features include power-supply undervoltage lockout (UVLO), charge-pump undervoltage lockout (CPUV), overcurrent protection (OCP), AVDD undervoltage lockout (AVDD_UV), buck regulator ULVO for MCT8316ZR/T and overtemperature shutdown (OTW and OTSD). Fault events are indicated by the nFAULT pin with detailed information available in the SPI registers on the SPI device version.

The MCT8316ZT and MCT8316ZR device are available in 0.5-mm pin pitch, VQFN surface-mount packages. The VQFN package size is 7 mm × 5 mm.