MSPM0L1xxx can support 2 PWM control for a gate driver with optional inline or low-side current sensing to drive high power, higher voltage BDC motors with closed-loop torque control. These gate drivers provide current to drive 4 external N-type MOSFETs, which have higher current and temperature ratings compared to integrated MOSFETs. These system architectures are used in high-power automotive applications such as power modules, door modules, windows, sunroofs, trunks, and other body applications. A low-cost MSP MCU provides the PWM, GPIO, SPI communication interface, and analog integration to support these H-bridge gate drivers.

As shown in Figure 3-4, the signals used in H-bridge gate driver with inline current sense amplifiers are:

• 4-PWM signal with adjustable duty cycle and pulse width (PWM)
• Low-power mode signal for drivers with sleep mode pin (nSLEEP)
• Optional SPI read/write interface (for drivers with SPI interface)
• Logic-low fault signal from driver (nFAULT)
• CSA reference (VREF)¹
• Optional low-side current sense from shunt resistor²

^{(1) CSA reference voltage can be output using 8-bit DAC from the integrated COMP.}

^{(2) Current sense can be realized using integrated COMP or OPA. Both COMP and OPA available in MSPM0L130x only.}