EP9132硬件电路参考设计5 4 3 2 1 5V 7 2 U4B VIN LM2576T-5 FB GND SW 10 8 40M3 R125 470 40M4 5V L1A1 D1A1 150UH D35 LED C A D STUFF ONLY IF 5V POWER APPLIED FROM J1 J8 40M1 12V F1 JP1 11 SHDN D 1N5822 1 9 1A_FUSE_SMD C58 U4A 40M2 C63 0.1u SHDN 1 5 VIN LM2576D2T-5 FB GND PAD SW 4 OCCUPY SPACE; SHORT WHILE PWR1 USED 1 3 2 1 5V L1 2 33UH B1 40M5 C1 100p 330uF/16V 0.1u C4 330uF/16V 201209-120 470uF/25V DC_12V F2 3 6 1A_FUSE R70 R/NC D20 MBRS340T3 C6 C37 C C 5V 5 C73 1 U9 IN SC1563ISK-3.3TR/NC OUT GND ADJ 4 R136 NC/390 2 3 PWR2 3V3_R1 R134 0 1 5 C74 1u 10uF/16V 0.1u 10uF/16V C75 C76 C77 1 5V U10 SC1563ISK-3.3TR/NC IN SHDN GND OUT ADJ 4 R137 NC/390 2 PWR3 3V3_R2 R135 0 1 C78 10uF/16V 1u SHDN C79 0.1u C80 10uF/16V R139 B VR 3 R140 0/220 1 3 R141 VR 3 B R138 0/220 ……