A6862

A6862 Automotive 3-Phase Isolator MOSFET Driver FEATURES AND BENEFITS Three floating N-channel MOSFET drives Maintains VGS with 100 kΩ gate-source resistors Integrated charge pump controller 4.5 to 50 V supply voltage operating range Two independent activation inputs Single phase-enable input VCP and VGS undervoltage protection 150°C ambient (165°C junction) continuous APPLICATIONS 3-phase disconnect for up to ASIL D level systems Electric power steering (EPS) Electric braking 3-phase solid-state relay driver PACKAGE: 16-lead TSSOP with exposed thermal pad (suffix LP) Not to scale DESCRIPTION The A6862 is an N-channel power MOSFET driver capable of controlling MOSFETs connected as a 3-phase solid-state relay in phase-isolation applications. It has three independent floating gate drive outputs to maintain the power MOSFETs in the on-state over the full supply range with high phase-voltage slew rates. An integrated charge pump regulator provides the above battery supply voltage necessary to maintain the power MOSFETs in the on-state continuously when the phase voltage is equal to the battery voltage. The charge pump will maintain sufficient gate drive (>7.5 V) for battery voltages down to 4.5 V with 100 kΩ gate source resistors. The three gate drives can be controlled by a single logic-level input. In typical applications, the MOSFETs will be switched on within 8 µs and will switch off within 1 µs. Two independent activation inputs can be used to put t...