What circuit is used to replace the power thick film circuit TFC7 18S?

TFC7 18S is a high-performance current-mode PWM switching power supply controller of Tianfeng International Co., Ltd., see. Made in China. com/showroom/wuxiaoyan11product-detailnowjnarjhtkw/ % E7 % 94% B5 % E6 % BA % 90% E6 % 8E % A7 % E5 % 88% B6 % E8 % 8A % AF % E7 % 89% 87% EF % BC % 8 dtfc 7 19% E3 % 80% 8 1 tfc

In addition, Tianfeng International Co., Ltd. may cease to exist. Other companies, such as Shenzhen Tian Jun Hengxun Technology Co., Ltd., may have their products THX202H, THX20 1, THX208H and THX203H copied from TFC7 18S series. See: /data/THX202H.pdf for the component manual. As can be seen from the schematic diagram of components, THX202H series and TFC7 18S are almost identical, with slightly different pin distributions.