SN75374

QUADRUPLE MOSFET DRIVER

SLRS028 – SEPTEMBER 1988

3–11

POST OFFICE BOX 655303

APPLICATION INFORMATION

Power MOSFET drivers must be capable of supplying high peak currents to achieve fast switching speeds as

shown by the equation

I

PK +

VC

tr

to. In the circuit shown in Figure 14(a), V is found by the equation

Peak current required to maintain a rise time of 100 ns in the circuit of Figure 14(a) is

I

PK +

(3

* 0)4(10 *9)

100(10 * 9)

+ 120 mA

Circuit capacitance can be ignored because it is very small compared to the input capacitance of the IRF151.