A dual-input power converter comprises two power stages using a common low-side element, a first input for coupling a first input voltage to the first power stage, a second input for coupling a second input voltage to the second power stage, and a controller for driving the first and second power stages...http://www.google.com/patents/US20060170400?utm_source=gb-gplus-sharePatent US20060170400 - Dual-input power converter and control methods thereof
