Multiphase buck type voltage regulator

Details Multiphase buck type voltage regulator Multiphase buck type voltage regulator

2005-05-24

2005-05-24

Berhane, Adolf (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

Reexamination Certificate

active

06897642

ABSTRACT:
A multiphase buck type voltage regulator having at least two phases and including a first switching means that selectively connect a supply voltage to a load through a first current path; a second switching means that selectively connect said supply voltage to said load through a second current path; a first activation circuit that activates said first switching means; a first delay circuit that deactivates said first switching means after a first period of time; a second activation circuit that activates said second switching means; a second delay circuit that after a second period of time deactivates said second switching means; said first period of time depends on said supply voltage and on the output voltage; said second period of time depends on said supply voltage and on a voltage proportional to the difference of current that flows in said first and second current path.

REFERENCES:
patent: 5889392 (1999-03-01), Moore et al.
patent: 5959441 (1999-09-01), Brown
patent: 6362608 (2002-03-01), Ashburn et al.
patent: 6462525 (2002-10-01), Chen
patent: 6661208 (2003-12-01), Rutter et al.
patent: 6806690 (2004-10-01), Xi

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