Load Share Control Technique and Controller IC Design

To solve uneven distribution of load currents and thermal stresses among the paralleled power modules, load share control technique was introduced in this paper. And a system solution based on the automatic master-slave control strategy was proposed. And then a controller IC was designed to realize the strategy. Measurement results showed that a good load share was achieved using the IC. At full load, the load share error could be controlled within 1% during 450mS