Conversion circuit for discriminating sourcing current and...

Details Conversion circuit for discriminating sourcing current and... Conversion circuit for discriminating sourcing current and...

2005-11-01

2005-11-01

Vu, Bao Q. (Department: 2838)

Electricity: power supply or regulation systems

In shunt with source or load

Using choke and switch across source

C323S224000, C323S284000

Reexamination Certificate

active

06960902

ABSTRACT:
A conversion circuit for discriminating sourcing current and sinking current utilizes a complementary switch circuit to change the serial loop connected with the output load according to ON/OFF signals, so as to correspond to a sourcing current output and a sinking current output. The conversion circuit also employs a voltage emulation circuit to shift the feedback voltage of both sourcing and sinking current to a suitable positive range, so as to omit a negative power source design. The conversion circuit utilizes a switch control logic circuit to timely blank the partial compared result of the feedback voltage of sinking current to generate correct ON/OFF signals.

REFERENCES:
patent: 5747977 (1998-05-01), Hwang
patent: 5867379 (1999-02-01), Maksimovic et al.
patent: 6326774 (2001-12-01), Mueller et al.
patent: 6348780 (2002-02-01), Grant
patent: 6600670 (2003-07-01), Morita et al.
patent: 6657417 (2003-12-01), Hwang
patent: 6737845 (2004-05-01), Hwang
patent: 6903535 (2005-06-01), Liu et al.

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