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https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/730312/ucc256303---bw-pin-use
UCC256303 -BW 引脚如果不需要用于过压保护、则不能施加过压保护、无变压器辅助绕组、通过输出级 MCU 进行过压检测并向 UCC256303提供反馈
