STMicroelectronics

STMicroelectronics STDRIVE101 Triple Half-Bridge Gate Driver

Integrates protection and monitoring functions

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.

STDRIVE101 Features

  • Supply-voltage range: 5.5V to 75V
  • 40ns propagation delay
  • Embedded voltage monitoring for each switch
  • 600mA sink/source current capability
  • Integrated bootstrap diodes
  • Compatible with 3.3V or 5V control logic

Applications

  • Home automation and appliances
  • Power tools
  • Fans and pumps
  • E-bikes
  • Textile machines
  • Gaming and consoles

Evaluation Kit for STDRIVE101

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.

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