Improved type dual-channel LED driving power supply

The utility model relates to an improved type dual-channel LED driving power supply comprising a DC-DC main power circuit and a DC-DC conversion control circuit. The improved type dual-channel LED driving power supply is characterized in that the DC-DC main power circuit is composed of a Buck-Boost...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HU WEI, ZHANG FANGYING, CHEN HONG, XU YAWU, XIE CHENYUE, WANG QING, CHEN XINBING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY
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Beschreibung
Zusammenfassung:	The utility model relates to an improved type dual-channel LED driving power supply comprising a DC-DC main power circuit and a DC-DC conversion control circuit. The improved type dual-channel LED driving power supply is characterized in that the DC-DC main power circuit is composed of a Buck-Boost converter and two paths of output control circuits connected in parallel at the output end of the Buck-Boost converter. The DC-DC conversion control circuit is composed of a data selector, a frequency-halving circuit, an inverter, two R-S triggers, two voltage comparators and two slope compensation circuits. According to the LED driving power supply, a Boost converter in the prior art is improved into the Buck-Boost converter, and the slope compensation circuit is also introduced so that the LED driving power supply can be applied to the occasion of voltage boost and voltage reduction conversion, and stability of circuit work can also be improved.