trip zone 模块

楼主你好！

简单来说CBC是一旦TZ信号出现以后，是基于每个周期切断PWM输出的，如果TZ保护信号撤除掉了，那么下一个PWM周期输出将恢复。

而One Shot指的是一旦TZ保护信号出现则彻底关断PWM输出，在保护信号撤除以后，需要软件清除掉TZ保护寄存器相应标志后，PWM才会继续输出。

因此CBC通过是用来做限流的，而One shot模式用来做过流保护如IPM过流保护。

你好，这是不是意味着，在使用one shot 中断时，不要将中断标志位清零，而使用CBC时就要响应一次清零一次呢？

One Shot:  一次性

CBC： Cycle By Cycle

您好，我用比较器做限流保护，可发现，故障信号消失后，并没有恢复PWM波，请问是什么原因,代码如下

EALLOW;
Comp2Regs.COMPCTL.bit.COMPDACEN = 1; // Power up Comparator 2 locally
Comp2Regs.COMPCTL.bit.CMPINV = 1;
Comp2Regs.COMPCTL.bit.COMPSOURCE = 0; // Connect the inverting input to the internal DAC
Comp2Regs.DACVAL.bit.DACVAL = 512;

EPwm1Regs.DCTRIPSEL.bit.DCAHCOMPSEL = DC_COMP2OUT; // DCAH = Comparator 2 output
EPwm1Regs.DCTRIPSEL.bit.DCALCOMPSEL = DC_TZ2; // DCAL = TZ2
EPwm1Regs.TZDCSEL.bit.DCAEVT2 = TZ_DCAH_LOW; // DCAEVT1 = DCAH low (will become active as Comparator output goes low)
EPwm1Regs.DCACTL.bit.EVT2SRCSEL = DC_EVT2; // DCAEVT1 = DCAEVT1 (not filtered)
EPwm1Regs.DCACTL.bit.EVT2FRCSYNCSEL = DC_EVT_ASYNC; // Take async path

EPwm1Regs.DCTRIPSEL.bit.DCBHCOMPSEL = DC_COMP2OUT; // DCBH = Comparator 2 output
EPwm1Regs.DCTRIPSEL.bit.DCBLCOMPSEL = DC_TZ2; // DCAL = TZ2
EPwm1Regs.TZDCSEL.bit.DCBEVT2 = TZ_DCBH_LOW; // DCBEVT1 = DCBH low (will become active as Comparator output goes low)
EPwm1Regs.DCBCTL.bit.EVT2SRCSEL = DC_EVT2; // DCBEVT1 = DCBEVT1 (not filtered)
EPwm1Regs.DCBCTL.bit.EVT2FRCSYNCSEL = DC_EVT_ASYNC; // Take async path

EPwm1Regs.TZSEL.bit.DCAEVT2 = 1;
EPwm1Regs.TZSEL.bit.DCBEVT2 = 1;

EPwm1Regs.TZCTL.bit.TZA = TZ_FORCE_LO; 
EPwm1Regs.TZCTL.bit.TZB = TZ_FORCE_LO;

EDIS

参照下帖

http://www.deyisupport.com/question_answer/microcontrollers/c2000/f/56/t/21250.aspx

Eric