MOSFET gate drive with reduced power loss

Details MOSFET gate drive with reduced power loss MOSFET gate drive with reduced power loss

2011-08-09

2011-08-09

Hiltunen, Thomas J (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S377000

Reexamination Certificate

active

07994827

ABSTRACT:
A gate driver for a power MOSFET in, for example, a DC-DC converter switches the MOSFET between a fully-on condition and a low-current condition instead of switching the MOSFET between fully-on and fully-off conditions. The amount of charge that must be transferred to charge and discharge the gate of the MOSFET is thereby reduced, and the efficiency of the MOSFET is improved. A trimming process is used to adjust the magnitude of the voltage supplied by the gate driver to the gate of the power MOSFET in the low-current condition.

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