Current Share in Multiphase DC–DC Converters Using Digital Filtering Techniques

摘要: This paper introduces a new method of passive current balancing for digital control multiphase DC-DC converters based upon the duty-cycle-matching principle. Current balance is achieved by inserting filter into path. The does not rely on loop, and therefore, stability performance concerns associated with traditional loop are obviated. Being sensorless, it insensitive to measurement inaccuracies caused noise, component value tolerance, or variation. It will be shown that effective can via some simple modifications standard voltage-mode laws, allowing minor additional complexity. effectiveness has been demonstrated experimental validation converter. share scheme perform well dynamically, matching currents cycle during load steps, clearly benefiting from absence slow popular in methods. proposed blends existing controllers. Given very low complexity implementing filter, degree exceptional.