Three phase motor controller IC drives external FETs for PWM current control, synchronous rectification and 100% duty-cycle capability

摘要

The increasing use of high-current brushless dc (BLDC) three phase motors puts stringent requirements on the drive electronics for function and safety. A new three phase motor controller has integrated all the circuitry to control the six power NMOS FETs for fractional horsepower motors up to 50V.