DRV8343x-Q1 Automotive 3-Phase Smart Gate Drivers Texas Instruments DRV8343x-Q1 Automotive, 60V, Smart Gate Drivers provide three half-bridge gate drivers, each capable of driving high-side and low-side N-channel power MOSFETs. The DRV8343S-Q1 has an SPI interface, while the DRV8343H-Q1 offers a hardware interface. The independent MOSFET control is enabled using the dedicated Source and Drain pins for solenoid application.