SWITCHING CONTROL CIRCUIT AND LED DRIVING CIRCUIT USING THE SAME

SWITCHING CONTROL CIRCUIT AND LED DRIVING CIRCUIT USING THE SAME

A switching control circuit configured to turn on a driving switching element by providing a gate signal to the driving switching element connected in series to an LED includes the switching control circuit configured to divide a PWM dimming signal into a normal PWM dimming section and a low PWM dim...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: AN, Byoung Kwon, LEE, Jang Hyuck, AHN, Hyun Mo
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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Beschreibung
Zusammenfassung:A switching control circuit configured to turn on a driving switching element by providing a gate signal to the driving switching element connected in series to an LED includes the switching control circuit configured to divide a PWM dimming signal into a normal PWM dimming section and a low PWM dimming section based on a timing selection signal, provide the gate signal of a first frequency to the driving switching element in the normal PWM dimming section, and provide the gate signal of a second frequency, greater than the first frequency, in the low PWM dimming section.