Patent ID: 9479066
Filing Date: 2016-10-25
CPC Classification: H02M,H05B,Y02B

Claim Text:
1. A power converter configured to convert electrical energy at an input voltage into electrical energy at an output voltage, the power converter comprising a power switch configured to be switched between an on-state and an off-state; a voltage divider coupled to the input voltage for providing a first measurement signal; a transformer comprising a primary winding and an auxiliary winding for providing a second measurement signal; wherein the primary winding is arranged in series to the power switch; and a controller configured to generate a control signal for putting the power switch into the on-state and into the off-state, respectively; wherein the control signal is generated based on the first and the second measurement signal from the power converter external to the controller; wherein the controller comprises a sensing pin configured to sense the first measurement signal, when the power switch is in the on-state, and configured to sense the second measurement signal, when the power switch is in the off-state, wherein the controller comprises a current source which is coupled to the sensing pin via a control switch and which is coupled to ground and wherein the control switch is opened, when the power switch is put to the on-state, and is closed, when the power switch is put to the off-state.