Futterama
Member
Hello forum,
I'm replacing the MOSFETs in an Electronic Speed Control (ESC) for RC cars.
My problem is, I don't really know what to look for when choosing the new MOSFET. The current rating of my MOSFETs are all higher than the old ones in the ESC.
I'm more interested in the gate charge ratings, to allow the same fall and rise times.
What is most important to take into consideration?
The following is stated in the datasheets:
- CISS Input Capacitance
- COSS Output Capacitance
- CRSS Reverse Transfer Capacitance
- Qg(TOT) Total Gate Charge at 10V
- Qg(5) Total Gate Charge at 5V
- Qg(TH) Threshold Gate Charge
- Qgs Gate to Source Gate Charge
- Qgd Gate to Drain “Miller” Charge
The swiching frequency is 13.9kHz according to the manual.
Thanks
I'm replacing the MOSFETs in an Electronic Speed Control (ESC) for RC cars.
My problem is, I don't really know what to look for when choosing the new MOSFET. The current rating of my MOSFETs are all higher than the old ones in the ESC.
I'm more interested in the gate charge ratings, to allow the same fall and rise times.
What is most important to take into consideration?
The following is stated in the datasheets:
- CISS Input Capacitance
- COSS Output Capacitance
- CRSS Reverse Transfer Capacitance
- Qg(TOT) Total Gate Charge at 10V
- Qg(5) Total Gate Charge at 5V
- Qg(TH) Threshold Gate Charge
- Qgs Gate to Source Gate Charge
- Qgd Gate to Drain “Miller” Charge
The swiching frequency is 13.9kHz according to the manual.
Thanks