The STMicroelectronics STDRIVE601 three-phase gate driver for 600 V N-channel power MOSFETs and IGBTs provides enhanced ruggedness against negative voltage spikes down to -100 V and responds to logic inputs in just 85 ns.
Featuring smart-shutdown circuitry for fast-acting protection, the chip turns off the gate-driver outputs immediately after detecting overload or short-circuit, for a period determined using an external capacitor and resistor. Designers can set the required duration, using large C-R values if needed, without affecting the shutdown reaction time. An active-low fault indicator pin is provided.
The STDRIVE601 replaces three half-bridge drivers to ease PCB layout and optimise the performance of three-phase motor drives for equipment such as home appliances, industrial sewing machines, and industrial drives and fans.
All outputs can sink 350 mA and source 200 mA, with gate-driving voltage range of 9 V – 20 V, for driving N-channel power MOSFETs or IGBTs. Matched delays between the low-side and high-side sections eliminate cycle distortion and allow high-frequency operation, while interlocking and dead-time insertion are featured to prevent cross-conduction.
Fabricated in ST’s BCD6S offline process, the STDRIVE601 operates from a logic supply voltage up to 21 V and high-side bootstrap voltage up to 600 V. Bootstrap diodes are integrated, saving on the bill of materials, and under-voltage lockout (UVLO) on each of the low-side and high-side driving sections prevents the power switches operating in low-efficiency or dangerous conditions.
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