A4928 Automotive Half-Bridge MOSFET Driver
FEATURES AND BENEFITS
• Half-bridge MOSFET driver
• Bootstrap gate drive f...
A4928 Automotive Half-Bridge MOSFET Driver
FEATURES AND BENEFITS
Half-bridge MOSFET driver
Bootstrap gate drive for N-channel MOSFET bridge
Cross-conduction protection with adjustable dead time
Charge pump
regulator for low supply voltage operation
5.5 to 50 V supply voltage operating range
5 V CMOS Logic I/O
SPI-compatible serial interface
Bridge control by direct logic inputs or serial interface
Programmable gate drive
Current sense amplifier
Programmable diagnostics
Automotive AEC-Q100 qualified A2SIL™ product—device features for
2
-
safety-critical systems
APPLICATIONS
Anti-lock braking systems (ABS) HVAC (blower fan) DC pumps (fuel, oil, water) Solenoids and actuators Similar industrial applications
PACKAGE:
24-lead TSSOP with exposed pad (suffix LP)
Not to scale
DESCRIPTION
The A4928 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 solenoids and actuators.
The A4928 is intended for automotive systems that must meet ASIL requirements. In common with other Allegro A2SIL™ products, this device incorporates features to complement proper system design, allowing users to achieve the required ASIL level.
A unique charge pump
regulator provides full gate drive for battery voltages down to 5.5 V for most applications. A bootstrap capacitor is used to provi...