2015年2月26日 · VGS(th) V G S (t h) is the threshold voltage at which the mosfet will turn on, so I have some questions about the threshold voltage; What happens if I go over the max threshold as told by the data sheet?

2020年5月19日 · Gate-Source Threshold Voltage - Vgs (th) (min) and Vgs (th) (max): Gate voltage at or below the minimum threshold value turns the MOSFET off. Common minimum gate voltages for 5 V logic may fall between 0.5 V and 1 V. Gate voltages above the maximum threshold value turn the MOSFET on.

Everything needed on how to determine the correct MOSFET VGS threshold is indicated in the datasheet of the MOSFET used. These are the key takeaways of this article:

VGS(th) is a MOSFET designer’s parameter and defines the point where the device is at the threshold of turning on. It is an indication of the beginning, nowhere near the end.

2019年12月27日 · The Rds (on) ratings quote a Vgs value - those are the one's to use for switching. Typically a logic level MOSFET has a 4.5V Vgs entry for Rds (on), and only a 10V one if not logic-level.

The threshold voltage is the minimum voltage at which the MOSFET even starts to turn on (see the Vgs(th) V g s (t h) line, where they specify the Vgs(th) V g s (t h) at Id I d of 250 µA).

2017年6月21日 · You mean Vgs(th) max, not Vgs(max)! The latter could easily be interpreted as the maximum allowed voltage across gate and source, a value typically between 10 and 20 volts.

2014年8月26日 · If you want to fully turn on the MOSFET as a switch then the voltage needs to be significantly higher than Vgs (th). Look in the transistor specification table for the ON resistance to see what Vgs they use for that measurement.

• Explain the long-term behavior of VGS(th) under switching operation • To discuss its impact on the application • To provide design guidelines to limit the related increase of on-state resistance RDS(on) as the major implication for the user in the application

How to prevent higher VGS glitch from triggering VGS,th