你好!
我现在参考器件datasheet 10.2.1 system with power path 设计的电路,现在接上直流电源作为AC输入,接上电池无法正常充电。具体参数和现象如下:
VIN = 12 V ,I adapter_limit = 3.75A , I charge = 2 A, I pre-charge = I term = 0.3 A, saltey timer : Disable 电池充电电压 8.4 V
万用表实际测量值如下
ACP = 11.62V VCC =10.9 V
ACDRV = 5.91V BATDRV = 11.62 V
ISET1 = 1 V HIDRV = 7.46 V
ISET2 = 0.75V PH = 7.46 V
ACSET = 0.3 V BTST = 9.28 V
VREF = 3.29 V REGN = 5.99 V
CE = 3.29 V LODRV = 0.12 V
STAT1 = 0.05 V SRP = 7.46 V
STAT2 = 10.06 V SRN = 7.46 V
PG = 0.07 V TTC = 0
TS = 1.66 V VFB = 1.85 V
LODRV 和 PH 的波形如下:
CH1 为 LODRV , CH2 为 PH