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tps562201的EN使用问题

EN直接接Vin时,输出正常,EN使用单片机驱动时,不带负载时,输出正常,带上200毫安左右电流的负载时,在开启的瞬间会出现一个大的电流,用功率表测试出现十几瓦的功率,输出电压不稳定(下面电路图中150K电阻未焊接)