Question
SGT1D5R10MEA with a standard bootstrap driver: how to stop bootstrap overcharge above 6 V?
Hi,
Can I drive the SGT1D5R10MEA with a normal bootstrap gate driver(standard silicon MOSFET drivers), one that has no regulated high-side supply? I could not find a clear answer in the data brief or in AN6268.
My setup
- 16S battery: 60.8 V nominal, 69.6 V maximum.
- 4-in-1 drone ESC, 20 kHz, 6-step sensorless control.
- One SGT1D5R10MEA per switch position.
- Driver: 3-phase half-bridge bootstrap driver with an external bootstrap diode and one gate supply (GVDD) of 5.4 V.
- Gate supply limit for the FET: VGS is 6 V maximum, as I read the datasheet.
My questions
- Is a standard bootstrap driver supported for this device, or does ST require a driver with a regulated high-side supply, such as the 6 V regulator in the STDRIVEG611?
- If standard drivers are allowed, what clamp does ST recommend?
- What is V_SD at 100 A and 200 A across temperature? I only see the 50 A value.
- Is there a tested reference design, or a list of recommended drivers for this part?
Thank You.
With regard,
Kaviselvan.