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https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/704548/ucc28180-how-does-ucc28180-project-from-input-beyond-85-265vac-if-no-ac-line-sensing-needed
大家好、在 UCC28180D 数据表中指定了这一点
" 8引脚解决方案(无需交流线路感应)"
客户询问是否没有交流线路感应、如果输入范围超出85~265Vac、该器件如何防止其掉电或停止工作？
感谢你的帮助
您好、John、
UCC28180没有欠压功能、因此如果您需要欠压保护、则需要外部欠压保护电路才能禁用开关。 是一个建议的电路。 这会测量输入电压、并在 VIN 低于设定的输入时将 VSENSE 拉至开环保护电平以下。
e2e.ti.com/.../EPGI-Discrete-brownout-function-of-UCC28180.pdf
此致
John
