PWM外设能够占用很小的CPU资源的情况下产生复杂的脉冲输出，也就是其灵活的特点使其必须根据需要进行编程。ePWM单元需要根据时序和控制需求对每一通道独立设置，以避免两个通道之间的干扰，这种互相独立的结构为应用提供了更大的灵活性。PWM模块是很多功率控制系统必须的控制单元，在商业和工业产品中都有应用，例如电机控制、数字开关电源、UPS电源等。(PWM peripherals can produce complex pulse output with small CPU resources, that is, its flexible characteristics make it necessary to program according to the need. The ePWM unit needs to set each channel independently according to the timing and control requirements to avoid interference between the two channels, and this independent structure provides greater flexibility for applications. PWM module is the necessary control unit of many power control systems, and is used in commercial and industrial products, such as motor control, digital switching power supply, UPS power supply, etc..)