AMT49502
80 V Automotive Half-Bridge MOSFET Driver
FEATURES AND BENEFITS
• Half-bridge MOSFET driver
• Bootstrap gate...
AMT49502
80 V Automotive Half-Bridge MOSFET Driver
FEATURES AND BENEFITS
Half-bridge MOSFET driver
Bootstrap gate drive for N-channel MOSFET bridge
Independent control of high-side and low-side gate drives
with cross-conduction capability
Charge pump
regulator for low supply voltage operation
5.5 to 80 V supply voltage operating range
Integrated logic I/O supply
SPI-compatible serial interface
Bridge control by direct logic inputs or serial interface
Programmable gate drive
Current sense amplifier
Programmable diagnostics
A2SIL™ product—device features for
2
safety-critical systems
-
AEC-Q100 Grade 0 qualified
PACKAGE:
24-lead TSSOP with exposed pad (suffix LP)
Not to scale
DESCRIPTION
The AMT49502 is an N-channel power MOSFET driver capable of controlling MOSFETs connected in a half-bridge arrangement and is specifically designed for automotive applications with high-power inductive loads, such as brush DC motors, BLDC motors, VR/SR motors, solenoids, and actuators.
A unique charge pump
regulator provides full gate drive over the full supply voltage range from 5.5 to 80 V for most applications. A bootstrap capacitor is used to provide the above-battery supply voltage required for N-channel MOSFETs.
Each MOSFET can be independently controlled by logic-level inputs or through the SPI-compatible serial interface. Fully independent control allows both external FETs to be turned on at the same time.
Integrated diagnostics provide in...