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BQ51025的负载能力仅达5V0.5A, 升至0.6A以上时,输出电压开始降低,直至0V,随后又会升高电压再次降至0V.依次重复下去.

Other Parts Discussed in Thread: BQ500212A, BQ51025

无线发射端:BQ500212A

无线接收端:BQ51025  (原理图如附件)

测试情况:

        BQ51025输出<=0.5A时,十分稳定,转化效率在75%, 当输出电流升至0.6A时,输出电压开始降低,直至0V,随后又会升高电压再次降至0V.依次重复下去.

        输出电压从0V升高电压时,BQ51025会瞬间发烫(发烫时间1秒钟左右).

望TI工程师/各位知情人士能协助找出问题!先谢了!