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R19 1k C11 1n/1kV R18 47 R26 91m C14 22p/25V R22 4.64k-F R20 46k4 VD4 MBRF2090CT E4 1000F/35V E5 1000F/35V L4 3.3H/5A Vout+ Vout- E6 1000F/35V DC 24V/4.5A 输出 Vcc 6 GND 2 Vsense 5 Vout 3 Ictrl 4 Vctrl 1 IC2 AP4313 DZ3 12V/0.5W R23 470k C13 2n2/25V R24 22k C15 2n2/25V R25 500 SGND SGND R21 41k2 C12 100n/25V SGND R27 91m 13 9 1 4 T2A U1 PC817C R19 2.2k