Multimode voltage regulator circuit

Details Multimode voltage regulator circuit Multimode voltage regulator circuit

2011-08-02

2011-08-02

Han, Jessica (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

C323S282000, C323S268000

Reexamination Certificate

active

07990119

ABSTRACT:
A multimode voltage regulator circuit includes a linear regulator sub-circuit configured to supply current to a load in a low-current mode, responsive to a first control signal from a first control path, as well as a switching regulator sub-circuit configured to supply current to the load in a high-current mode, responsive to a second control signal from a second control path. The circuit further comprises a shared error amplifier configured to generate an error signal based on the difference between a reference voltage and a feedback signal coupled from the load, and a switch configured to selectively route the error signal to the first control path in the low-current mode and to the second control path in the high-current mode.

REFERENCES:
patent: 6424128 (2002-07-01), Hiraki et al.
patent: 6737839 (2004-05-01), Hiraki et al.
patent: 6836417 (2004-12-01), Hiraki et al.
patent: 6897715 (2005-05-01), Barber, Jr. et al.
patent: 6943514 (2005-09-01), Chen et al.
patent: 7498769 (2009-03-01), Potanin et al.
patent: 7609039 (2009-10-01), Hasegawa

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