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理论上是这样,但是实际中会有温度问题。
因为TPA31XX系列都是集成MOSFET的方案,如果在接4Ohm负载的情况下,电流增大,因为内部导通阻抗的问题,那么发热也会大很多。
所以在4Ohm负载的情况下,更推荐TPA3116D2方案。因为TPA3116D2的散热焊盘是在芯片表面,可以接散热器。