Patent ID: 9046904
Filing Date: 2015-06-02
Classification: G05F,H02M

Abstract:
1. An apparatus comprising a boost voltage converter and a buck-boost voltage converter sharing an inductor, wherein the apparatus is configured to: fix a pulse width of one of a maximum on-time pulse signal and a minimum on-time pulse signal, wherein the maximum on-time pulse signal defines a maximum on-time during which a current flowing through the inductor is generated, and wherein a minimum off-time pulse signal defines a minimum off-time during which either the boost voltage converter or the buck-boost voltage converter produces a positive voltage or a negative voltage; and adjust another pulse width of one of the maximum on-time pulse signal and the minimum on-time pulse signal that was not fixed when said apparatus fixed said pulse width, and the apparatus comprises: a pulse width adjuster configured to adjust the pulse width of said another pulse signal according to the pulse width adjustment signal.