PSRR control loop with configurable voltage feed forward compensation
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United States of America Patent
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Aug 15, 2017
Grant Date -
Oct 15, 2015
app pub date -
Apr 23, 2015
filing date -
Oct 30, 2012
priority date (Note) -
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Abstract
The present document relates to the compensation of voltage variations within power converters. A driver circuit for a solid state light source is described. The driver circuit comprises a switched-mode power converter comprising a switch; wherein the switched-mode power converter is configured to convert an input voltage at an input of the switched-mode power converter into an output voltage at an output of the switched-mode power converter. Furthermore, the driver circuit comprises current sensing means configured to determine a sensed current signal indicative of a current through the switch; and voltage sensing means configured to determine a sensed voltage signal indicative of the input voltage. In addition, the driver circuit comprises a control unit configured to determine a gate control signal for putting the switch into an off-state, based on the sensed current signal and based on the sensed voltage signal.
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