Patent ID: 9287786
Filing Date: 2016-03-15
CPC Classification: H02M

Claim Text:
1. A power converter, comprising: an energy transfer element coupled between an input of the power converter and an output of the power converter; a power switch coupled the energy transfer element and the input of the power converter; a control circuit coupled to generate a switching signal to control switching of the power switch in response to a feedback signal representative of the output of the power converter to control a transfer of energy from the input of the power converter to the output of the power converter; a programming interface circuit coupled to the control circuit; a coupling switcher coupled to the programming interface circuit; and a programming terminal selectively coupled to the programming interface circuit through the coupling switcher, wherein a programming circuit coupled to the programming terminal is coupled to the programming interface circuit through the coupling switcher during a startup programming condition and during a fault condition of the power converter, wherein the programming circuit coupled to the programming terminal is decoupled from the programming interface circuit by the coupling switcher during a normal operating condition of the power converter.