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AMT49107

Allegro
Part Number AMT49107
Manufacturer Allegro
Description Automotive Three-Phase MOSFET Driver
Published Aug 3, 2022
Detailed Description AMT49107 Automotive Three-Phase MOSFET Driver FEATURES AND BENEFITS • 3-phase bridge MOSFET driver • Bootstrap gate ...
Datasheet PDF File AMT49107 PDF File

AMT49107
AMT49107

Overview
AMT49107 Automotive Three-Phase MOSFET Driver FEATURES AND BENEFITS • 3-phase bridge MOSFET driver • Bootstrap gate drive for N-channel MOSFET bridge • Cross-conduction protection with adjustable dead time • Charge pump for low supply voltage operation • Operation at any PWM duty cycle up to and including 100% • 4.
5 to 50 V supply voltage operating range • Supply for external isolator • SPI-compatible serial interface • Bridge control by direct logic inputs or serial interface • Q&A and ENABLE watchdog • Extensive programmable diagnostics • Diagnostic verification • Safety-assist features • Automotive AEC-Q100 qualified • A2-SIL™ product—device features for 2 safety-critical systems* - PACKAGE: 48-pin QFN with exposed thermal pad (suffix EV) Not to scale *The AMT49107 was developed in accordance with ISO 26262 as a hardware safety element out of context with ASIL D capability for use in automotive safety-related systems when integrated and used in the manner prescribed in the applicable safety application note and datasheet.
DESCRIPTION The AMT49107 is an N-channel power MOSFET driver capable of controlling MOSFETs connected in a 3-phase bridge arrangement and is specifically designed for automotive applications with high-power inductive loads, such as BLDC motors.
A unique charge pump regulator provides the supply for the MOSFET gate drive for battery voltages down to 5.
5 V and allows the AMT49107 to operate with a reduced gate drive down to 4.
5 V.
Gate drive strength is programmable to help reduce EMC issues.
A bootstrap capacitor is used to provide the above-battery supply voltage required for N-channel MOSFETs with a VCP charge pump facilitating high side gate drive switching at any PWM duty cycle up to and including 100%.
Full control is provided over all six power MOSFETs in the 3-phase bridge, allowing motors to be driven with block commutation or sinusoidal excitation.
The power MOSFETs are protected from shoot-through by integrated cr...


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