MOSFET drive circuit, programmable power supply and...

Details MOSFET drive circuit, programmable power supply and... MOSFET drive circuit, programmable power supply and...

2006-08-22

2006-08-22

Patel, Rajnikant B. (Department: 2838)

Miscellaneous active electrical nonlinear devices, circuits, and

External effect

Light

C327S427000, C250S551000, C250S552000, C307S402000, C307S328000

Reexamination Certificate

active

07095267

ABSTRACT:
In a programmable power supply used in a semiconductor test apparatus, high-speed switching of a large current in a current rage or an output relay is enabled. In a MOSFET drive circuit22of a switch portion20provided in a programmable power supply10of a semiconductor test apparatus1, a capacitor portion22-12is charged with electric charges by a current from a light receiving portion22-12of a light insulating element22-1. When an SWA is turned on (SWB is turned off) by changeover of the analog switch portion22-3, a gate of each MOSFET in the MOSFET portion21is charged with the electric charges stored in the capacitor portion22-12, and enters an ON state. On the other hand, when the SWB of the analog switch portion22-3is turned on (SWA is turned off), the gate of the MOSFET is discharged.

REFERENCES:
patent: 5612582 (1997-03-01), Shichi et al.
patent: 6803750 (2004-10-01), Zhang
patent: 11-006860 (1999-01-01), None

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