STMicroelectronics STDRIVE101 gate-driver IC

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STMicroelectronics has created an integrated, three-phase, half-bridge driver IC with performance optimised for low-voltage industrial applications up to 75 V, delivering a space-efficient and power-saving solution to control three-phase brushless motors in e-bikes, power tools, pumps, fans, light machinery, gaming consoles and other equipment.

The STDRIVE101 embeds three half-bridge drivers for external N-channel MOSFETs, each able to sink and source up to 600 mA gate current. Integrated bootstrap diodes and a 50 mA 12 V low-dropout (LDO) regulator ready to supply external components help designers minimise the bill of materials. A comparator for overcurrent detection using external resistors and drain-source voltage monitoring of each MOSFET for short-circuit protection are also provided.

Essential safety features are built in, including internally generated dead time to prevent cross-conduction, over-temperature shutdown, and under-voltage lockout (UVLO) on both the low-side and high-side sections to prevent the MOSFETs from operating in low-efficiency or dangerous conditions.

A DT/MODE selection pin lets designers choose to control switching with individual high-side and low-side signals or a single PWM signal and enable input. A standby pin sets the device in low-power mode with the LDO turned off to maximise energy savings when idle.

For more information: www.st.com/stdrive.