This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
TI例程PMP21529中提到四开关BUCKBOOST应用中，用UCC27211A实现上管100%占空比，
我查看了UCC27211A的资料，是利用自举电容实现的上管开通功能。若按照例子里面所说，下管长时间不开通，驱动自举电容电量是否会释放掉，无法实现上管常通？
Hi
你以同步降压芯片为例，很多芯片都是可以实现100%duty下工作，同样的道理高低边驱动一样可以实现的，除非有duty限制。
