The alpha s358 is not a power chip, but a dual amplifier. ① foot for the OP-amp output, ② foot for the OP-amp - reverse phase < A > Input, ③ foot for the op amp _ in-phase < Ten % gt; Input, ④ foot is ground, ⑤ foot is OP-amp two in phase < Ten % gt; Input, ⑥ foot for the op amp two-phase inversion < A > Input, 7 foot for the operation amplifier two output, ⑧ for the power supply. Although αs358 is not a power chip, it controls the voltage output in the power supply circuit, and in the electric vehicle charger, the charge is controlled by 358, and the full charge is cut off immediately.