System and method for achieving precise regulation of multiple outputs in a multi-resonant LED driver stage

System and method for achieving precise regulation of multiple outputs in a multi-resonant LED driver stage

A light emitting diode (LED) driver includes an inverter for converting a DC input signal to a pulsating signal. A multiple output multi-resonant converter generates a first LED string current in response to the pulsating signal, and also generates a second LED string current in response to the puls...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Yao Gang, Ramabhadran Ramanujam
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:A light emitting diode (LED) driver includes an inverter for converting a DC input signal to a pulsating signal. A multiple output multi-resonant converter generates a first LED string current in response to the pulsating signal, and also generates a second LED string current in response to the pulsating signal. A transistor that may be a FET or BJT operating in its linear region regulates the second LED string current independent of the first LED string current without sacrificing efficiency of the overall power train.