I got two questions about Half-Bridge Gate Driver MP1907 circuit on brushless motor driving.
MP1907 chip's eveluation board uses 1uF for bootstrap capacitor. However the 20A brushless motor ESC i have uses 4.7uF. Does the value matter?
Should I use a smaller value like 1uF for fast charging in fast switching applications?
The application is brushless motor driving around 20-30A max current. The voltage is around 16V.
The ESC I have uses 47 Ω resistor between gate of the MOSFET and the DRVH, DRVL pins of the MP1907. Is this necessary? What good is in there to use them since again eveluation board does not use any resistor and connects the Drive pins of the MP1907 to gate of MOSFET directly?