MSPM0L1xxx can support 2 PWM control for a low-cost, low voltage H-bridge motor driver to drive small-power BDC motors. These motor drivers are typically very small and integrate the 4 N-type MOSFETs, and these system architectures are used in personal electronics, personal care items, smart locks, robotics/toys, and more. Bus overcurrent detection or basic torque control can be implemented using the integrated OPA or COMP inside the MSPM0. A low-cost MSP MCU provides the PWM, GPIO control, and analog integration while detecting fault conditions using the driver’s fault pin or optional overcurrent detection.

As shown in Figure 3-3, the signals used in H-bridge motor driver control are:

• 2-PWM signal with adjustable duty cycle and pulse width (PWM)
• Low-power mode signal for drivers with sleep mode pin (nSLEEP)
• Logic-low fault signal from driver (nFAULT)
• Optional low-side current sense from shunt resistor¹

^{(1) Current sense can be realized using integrated COMP or OPA, available in MSPM0L130x only.}