Measuring a MOSFET’s Miller Plateau
element14 Presents | Bald Engineer: James Lewis' VCP Profile | Workbench Wednesdays
Turning on a MOSFET takes more than knowing the threshold voltage. A special event occurs when a FET turns-on, which is called the Miller Plateau. The gate voltage sticks to the threshold voltage while the drain opens up. In this video, James shows how to measure the Miller Capacitance, using an oscilloscope and custom MOSFET test board.
Supplemental Content:
- The Learning Circuit 31: How FETs Function
- Experimenting with MOSFETS: Total Gate Charge by jc2048
- Infineon MOSFET App Note
Bill of Material:
| Product Name | Manufacturer | Quantity | Buy KitBuy Kit |
|---|---|---|---|
| FQP30N06LFQP30N06L - Power MOSFET, N Channel, 60 V, 32 A, 0.027 ohm, TO-220AB, Through Hole | On Semi | 1 | Buy NowBuy Now |
| Arduino Uno | Arduino | 1 | Buy NowBuy Now |
| 1 GHz Active Probe RT-ZS10 | Rohde & Schwarz | 2 | Buy NowBuy Now |