The AP8012 combines a dedicated current mode PWM controller with a high voltage power MOSFET on the same silicon chip.
规格书上写到的应用
Power AC/DC Adapters for Chargers
DVD/VCD power supplies
Electromagnetic Oven power supplies
Air Conditioner power supplies
STB power supplies
AC/DC LED Driver Applications
SW的功能：
The SW pin is designed to connect directly to the primary lead of the transformer and is capable of switching a maximum of 700V.
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规格书上写到的应用
Power AC/DC Adapters for Chargers
DVD/VCD power supplies
Electromagnetic Oven power supplies
Air Conditioner power supplies
STB power supplies
AC/DC LED Driver Applications
SW的功能：
The SW pin is designed to connect directly to the primary lead of the transformer and is capable of switching a maximum of 700V.
电路图的这部分我就没看懂这个芯片实现的是什么功能
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