Electrical transmission or interconnection systems – Switching systems – Condition responsive
Patent
1997-12-23
1999-05-04
Gaffin, Jeffrey
Electrical transmission or interconnection systems
Switching systems
Condition responsive
307126, H01H 3500
Patent
active
059006838
ABSTRACT:
An isolated gate driver device for a power switching device having a plurality of transistors includes a primary circuit having a voltage source of a first voltage potential. The primary circuit constantly switches the voltage source to generate first and second load signals based on control signals received from a microcontroller. The first load signal is modulated at a first frequency for enabling the transistors, and the second load signal is modulated at a second frequency, different from the first frequency, for disabling the transistors. A plurality of high frequency transformers corresponding to each of the transistors is coupled to the primary circuit. The transformers have a primary side for receiving one of the first and second load signals and a secondary side for transforming the one of the first and second load signals into corresponding signals at a second voltage potential. A secondary circuit coupled between each of the transformers and each of the corresponding transistors provides a bias power supply to each of the transistors at the second voltage potential. The secondary circuit also enables and disables each of the transistors based on the first and second load signals.
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Rinehart Lawrence Edward
Sankaran Venkateswara Anand
Coppiellie Raymond L.
Ford Global Technologies Inc.
Gaffin Jeffrey
Garlepp Ed
May Roger L.
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