Multi-phase DC-DC converter and method for balancing channel...

Details Multi-phase DC-DC converter and method for balancing channel... Multi-phase DC-DC converter and method for balancing channel...

2008-05-14

2011-11-15

Behm, Harry (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

Reexamination Certificate

active

08058856

ABSTRACT:
A multi-phase DC-DC converter is provided. A plurality of switching sets are coupled to an output, wherein each switching set includes a phase node. A plurality of inductors are separately coupled between the phase nodes and the output. A sense circuit has a plurality of sense units separately coupled to the phase nodes, each sensing a signal from the corresponding phase node and generating a sensing signal. A PWM generator includes a plurality of subtracting units, each subtracting a first signal from one of the sensing signals to generate a difference signal, wherein the first signal is generated by summing each of the sensing signals divided by a predetermined value except for the one of the sensing signals. The PWM generator generates a plurality of PWM signals to balance the currents of the inductors according to the difference signals.

REFERENCES:
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patent: 6160725 (2000-12-01), Jansen
patent: 6278263 (2001-08-01), Walters et al.
patent: 6414470 (2002-07-01), Liu et al.
patent: 6670794 (2003-12-01), Wang et al.
patent: 6839252 (2005-01-01), Tai et al.

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