The STDRIVE101 from STMicroelectronics is an integrated triple half-bridge gate driver which provides a complete gate-drive solution for the inverter stage of a three-phase Brushless DC (BLDC) motor.
As well as supplying a drive input to half-bridge power MOSFETs, the STDRIVE101 IC also provides monitoring and protection functions, and an optimized low-drop linear regulator which can supply up to 50mA at 12V.
Protection functions in the STDRIVE101 include monitoring of the drain-source voltage on each N-channel power MOSFET. The chip provides a signal to a host controller to alert it to anomalies. A native under-voltage lock-out function on the low- and high-side sections of the motor-drive circuit prevents inefficient and potentially damaging switching operation.
The STMicroelectronics STDRIVE101 implements a choice of two input arrangements to prevent cross-conduction: an interlocking method, or internally generated dead-time. Propagation delay is matched across all channels.
The chip is supplied in a QFPN package measuring 4mm x 4mm x 1mm.
Kit part number: EVALSTDRIVE101
This demonstration board can be used to drive a three-phase brushless DC motor. It can be interfaced with an STM32 microcontroller through the motor control connector.