Patent ID: 6768658
Filing Date: 2004-07-27
Classification: H02J,H02M

Abstract:
A power supply, comprising:first and second current mode controlled power converters connected in parallel to power a load having a load current, wherein the first power converter includes a first current mode control circuit responsive to a first current sense signal and wherein the first current mode control circuit includes a first voltage error amplifier, and wherein the second power converter includes a second current mode control circuit responsive to a second current sense signal and wherein the second current mode control circuit includes a second voltage error amplifier, and wherein an output terminal of the first voltage error amplifier is connected to an output terminal of the second voltage error amplifier to thereby form a high-speed current share control loop; and a slow loop current share control circuit responsive to a sensed current in each of the first and second power converters for minimizing errors of the high-speed current share control loop by introducing an offset on one of the first and second current sense signals.