Switching circuit using multiple common-drain JFETs for good...

Details Switching circuit using multiple common-drain JFETs for good... Switching circuit using multiple common-drain JFETs for good...

2007-07-03

2008-11-04

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Gating

Utilizing three or more electrode solid-state device

C327S431000

Reexamination Certificate

active

07446591

ABSTRACT:
A switching circuit uses multiple common-drain JFETs to serve as the low-side switches of the switching circuit, and each of the low-side JFET is coupled between a high-side switch and a power node. Since a JFET can endure high voltage at both drain side and source side, and has good heat dissipation capability at drain side, the drain of the low-side JFET is coupled to the power node to enhance the heat dissipation capability and accordingly, all the low-side JFETs are allowed to be packaged in a same package to reduce the PCB layout area.

REFERENCES:
patent: 4896061 (1990-01-01), Ahmed
patent: 4947064 (1990-08-01), Kim et al.
patent: 5223754 (1993-06-01), Decker et al.
patent: 5497118 (1996-03-01), Ueno et al.
patent: 6781459 (2004-08-01), Brown

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