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3933

Part Number	3933
Manufacturer	Allegro MicroSystems
Description	THREE-PHASE POWER MOSFET CONTROLLER
Published	Mar 30, 2005
Detailed Description	Data Sheet 26301.100† 3933 RESET PGND AGND GLC DEAD REF SC THREE-PHASE POWER MOSFET CONTROLLER The A3933SEQ is a three...
Datasheet	3933 PDF File

Overview

Data Sheet 26301.
100† 3933 RESET PGND AGND GLC DEAD REF SC THREE-PHASE POWER MOSFET CONTROLLER The A3933SEQ is a three-phase MOSFET controller for use with bipolar brushless dc motors.
It drives all n-channel external power FETs, allowing system cost savings and minimizing r(DS)on power loss.
The high-side drive block is implemented with bootstrap capacitors at each output to provide the floating positive supply for the gate drive.
The high-side circuitry also employs a unique “intelligent” FET monitoring circuit that ensures the gate voltages are at the proper levels before turn-on and during the ON cycle.
This device is targeted for applications with motor supplies from 12 V to 28 V.
Int...

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