Part Number:BQ25703A
原理图见图片,主要问题就是开关部分不工作,2块板子都如此,但是REGN的6V是正常的;尝试在上电一开始抓取MOS的G极波形,完全没有。
测量引脚电压:VBUS=12V,SW1=SW2=1.1V,BTST1=BTST2=5.42V,HIDRV1=HIDRV2=1.1V,LODRV1=LODRV2=0V.REGN=5.75V
Cherry Zhou:
您好,您的问题我们需要升级到英文论坛看下,有答复尽快给到您。
,
user6177096:
好的,感谢
,
Cherry Zhou:
您好,
能否提供下寄存器转储? 状态寄存器和故障寄存器可能会报告此问题。
,
user6177096:
你好,今天刚把通讯做好,寄存器读取如下。麻烦看下。
device = 0x780x00 = 0x0e0x01 = 0xe20x30 = 0x110x31 = 0x020x32 = 0xb70x33 = 0x020x34 = 0x000x35 = 0x000x36 = 0x540x37 = 0x4a0x38 = 0x200x39 = 0x810x3A = 0x000x3B = 0x200x20 = 0x000x21 = 0xa00x22 = 0x000x23 = 0x000x02 = 0x000x03 = 0x000x04 = 0xa00x05 = 0x410x0D = 0x300x0f = 0x410x25 = 0x410x0A = 0x400x0B = 0x1d0x06 = 0x000x07 = 0x000x09 = 0x000x26 = 0x000x27 = 0x890x28 = 0x000x29 = 0x000x2A = 0x000x2B = 0x000x2C = 0x000x2D = 0x00