Switching elements on-off speed controller circuit diagram

Published:2011/7/20 20:19:00 Author:Ecco | Keyword: Switching elements , on-off , speed , controller | From:SeekIC

Pin 9 (VC) is used for the promotion of external switching devices. In order to avoid the effect on the pin from the pulse current effect, it should be connected a buffer capacitor between the pin and the ground (pin 11) to suppress interference caused by the current pulse. In addition, in order to adjust the external switching components on-off speed, it could be added a resistor between the buffer capacitor and pin, and the circuit is shown in Figure 9-36. From the figure, we can see, when power MOSFET gate is turned on, the resistance is Rg + R'g, and when it is turn-off, the gate resistance is only Rg.



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