A4918-1A Overview
The A4918 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 7 V and allows the A4918 to operate with a reduced gate drive down to 4.5 V. Gate...
A4918-1A Key Features
- 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
- Top-off charge pump for 100% PWM
- Programmable gate drive voltage and strength
- 4.5 to 50 V supply voltage operating range
- Integrated logic supply
- Three programmable current sense amplifiers
- SPI-patible serial interface