A3932SLDTR-T(2013) 데이터시트 - Allegro MicroSystems

Description
   The A3932 is a three-phase MOSFET con trol ler for use with bipolar brushless DC motors. Its high gate-current drive capability allows driving a wide range of N-channel power MOSFETs and can support motor supply voltages to 50 V. Bootstrapped high-side drive blocks provide the float ing positive supplies for the gate drive and minimize the component count normally required. The high-side cir cuit ry also em ploys a unique FET monitoring circuit that ensures the gate voltages are at the proper levels before turn-on and during the ON cycle.

FEATUREs and Benefits
▪ Drives wide range of N-channel MOSFETs
▪ Synchronous rectification
▪ Power MOSFET protection
▪ Adjustable dead time for cross-conduction pro tec tion
▪ 100% duty cycle operation
▪ Selectable fast or slow current-decay modes
▪ Internal PWM peak current control
▪ High-current gate drive
▪ Motor lead short-to-ground protection
▪ Internal 5 V regulator
▪ Brake input
▪ PWM torque-control input
▪ Fault-diagnostic output
▪ Tachometer output
▪ Thermal shutdown
▪ Undervoltage protection