EDN

P Channel and N Channel MOSFETs in Switched Mode Power Supply Applications

MOSFETs have been the chosen transistor technology in most Switched Mode Power Supplies (SMPS) since the mid 1980’s. MOSFETs are used as the main switching transistor as well as to improve efficiency ...
Electronic Design

P-Channel Power MOSFETs Approach N-Channel Performance

The source voltage of a P-channel device is stationary when the device operates as an HS switch. Conversely, the source voltage of an N-channel device used as an HS switch varies between the low side ...
Electronic Design

FET Supplies Low-Voltage Reverse-Polarity Protection

When a circuit requires reverse-voltage protection on the power input, the usual approach is a series diode (see the figure, a). But if the input voltage is low—say, two or three AA batteries—the ...
EDN

P-channel MOSFETs Approach N-Channel Performance

Using the latest generation of trench and polar power MOSFET technologies, both trench and polar P-channel power MOSFETs have been developed that retain all the features of comparable N-channel power ...