Adjustable internal gate resistor

摘要

The disclosure describes a method for controlling a voltage that is applied to a voltage controlled circuit element. In one example, the method includes controlling, by a semiconductor light source, a resistance value of a photoresistor coupled to a voltage controlled circuit element. The method includes applying, by a gate driver and via the photoresistor, a voltage to the voltage controlled circuit element. The method further includes controlling the voltage applied to the voltage controlled circuit element in order to control a current through the voltage controlled circuit element. In some examples, controlling the voltage applied to the voltage controlled circuit element may be accomplished by controlling the resistance value of the photoresistor in order to control a voltage drop across the photoresistor. Circuits that implement the method are also described.

主权项

1. A method comprising:
controlling, by a semiconductor light source, a resistance value of a photoresistor coupled to a voltage controlled circuit element; and applying, by a gate driver and via the photoresistor, a voltage to the voltage controlled circuit element to drive the voltage controlled circuit element to one of an ON state or an OFF state, wherein controlling the resistance value of the photoresistor controls a voltage drop across the photoresistor to control the voltage applied at the voltage controlled circuit element so as to control a current through the voltage controlled circuit element.