Hi Xiaoqing,
Yes, this is normal. In the DRV832x, CPH and CPL are using to create VCP by charging a capacitor and moving the charge to the VCP capacitor. The VCP voltage should remain constant.
The DRV8301 uses a bootstrap architecture, which attempts to maintain a constant voltage across VBST_x and SH_x.
Yes, this is normal. In the DRV832x, CPH and CPL are using to create VCP by charging a capacitor and moving the charge to the VCP capacitor. The VCP voltage should remain constant.
The DRV8301 uses a bootstrap architecture, which attempts to maintain a constant voltage across VBST_x and SH_x.