Despite their different structures, all three-phase AC induction motors (AC IM) and three-phase permanent magnet motors (BLDC, PMSM or PMAC) are driven by a PWM-modulated three-phase bridge (three half bridges) so as to supply the motor with variable frequency and amplitude three-phase voltages and currents.

To give the greatest design freedom (for example, the selection of turn-on and turn-off power switch resistors), ST’s product portfolio has specific products for both high and low-voltage applications with a wide package choice for discrete MOSFETs or IGBTs and related gate drivers.

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