A method for operating a switching power converter to reduce ripple current magnitude includes (a) controlling duty cycle of a plurality power stages of the switching power converter to regulate at least one parameter of the switching power converter, each power stage including a respective power transformer, and (b) controlling an injection stage of the switching power converter to reduce voltage across leakage inductance of each power transformer, the injection stage including an injection transformer that is electrically coupled to a respective secondary winding of each power transformer.