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bq24133充电电路发热

Other Parts Discussed in Thread: BQ24133

最近设计了一款充电器,采用bq24133对三串锂电池充电。  充电电流设置为2.2A ,输入电压15V 输入电流限制2A。

充电过程中发现发热厉害,  暴露在空气中 测量芯片背面  ,温度大约为80-105度之间,峰值超过105度达到110度。

大部分稳定在90度左右,  环境温度为29度。

请问下正常吗?