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BQ24296充电器电压超过5.4V后充电电流就不正常

Other Parts Discussed in Thread: BQ24296M, BQ24296

Dear TI :

    我们的BQ24296m在使用过程中发现电压超过5.4V后充电电流就不正常了。电压低于5.2V充电是ok的,我们核对了不同寄存器,发现充电状态不一样,但是其他寄存器是一样。请帮忙分析一下原因。

        充电ok的寄存器:

78.997999] <0>.(0)[133:bat_thread_kthr]---------------------------->
[ 78.999414] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[0]=0x6
[ 79.000820] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[1]=0x1b
[ 79.002235] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[2]=0x6c
[ 79.003651] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[3]=0x30
[ 79.005067] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[4]=0xb2
[ 79.006482] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[5]=0x94
[ 79.007897] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[6]=0x73
[ 79.009317] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[7]=0x48
[ 79.010736] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[8]=0xac
[ 79.012153] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[9]=0x0
[ 79.013025] <0>.(0)[133:bat_thread_kthr]---------------------------->
[ 79.015808] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[0]=0x6
[ 79.017214] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[1]=0x1b
[ 79.018632] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[2]=0x6c
[ 79.020079] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[3]=0x30
[ 79.021497] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[4]=0xb2
[ 79.022916] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[5]=0x94
[ 79.024335] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[6]=0x73
[ 79.025752] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[7]=0x48
[ 79.027171] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[8]=0xac
[ 79.028589] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[9]=0x0
[ 79.034371] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[8]=0xac

充电不正常的:

35.446016] <0>.(0)[133:bat_thread_kthr]---------------------------->
[ 35.447352] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[0]=0x6
[ 35.448751] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[1]=0x1b
[ 35.450274] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[2]=0x6c
[ 35.451691] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[3]=0x30
[ 35.453107] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[4]=0xb2
[ 35.454525] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[5]=0x94
[ 35.455942] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[6]=0x73
[ 35.457357] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[7]=0x48
[ 35.458775] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[8]=0x94
[ 35.460219] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[9]=0x0
[ 35.461091] <0>.(0)[133:bat_thread_kthr]---------------------------->
[ 35.463865] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[0]=0x6
[ 35.465307] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[1]=0x1b
[ 35.466729] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[2]=0x6c
[ 35.468148] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[3]=0x30
[ 35.469610] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[4]=0xb2
[ 35.471029] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[5]=0x94
[ 35.472446] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[6]=0x73
[ 35.473863] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[7]=0x48
[ 35.475282] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[8]=0x95
[ 35.476698] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[9]=0x0
[ 35.482448] <0>.(0)[133:bat_thread_kthr][bq24296_read_interface] Reg[8]=0x85

2728.BQ24296.pdf

谢谢!