Update: 30 September, 2023
The A3940KLP and A3940KLW are designed specifically for automotive applications that require high-power motors. Each provides four high-current gate drive outputs capable of driving a wide range of n-channel power MOSFETs in a full-bridge configuration. Bootstrap capacitors are utilized to provide the above-battery supply voltage required for n-channel FETs. An internal charge pump for the high side allows for dc (100% duty cycle) operation of the bridge. Protection features include supply under/overvoltage, thermal shutdown, and motor lead short-to-battery and short-to-ground fault notification, and a programmable dead-time adjustment for cross- conduction prevention. The overvoltage trip point is user adjustable. The A3940 is supplied in a choice of two power packages, a 28- lead TSSOP with an exposed thermal pad (suffix LP), and a 28-lead wide-body SOIC (suffix LW).
File format: PDF
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MD5 Checksum: E6891A72941B3700776414057088B56A
Publication date: 03 August, 2012
Downloads: -
PDF Link: Allegro 3940 handbook PDF