Low-current ripple LED driver by two-phase driving approach

A two-phase driving approach for light-emitting diode (LED) power supply is proposed. The approach uses two rectangular current sources working complementarily to supply a constant current to the LED string so that the output current can contain very low ripple even without the use of any electrolyt...

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Veröffentlicht in:	Electronics letters 2015-10, Vol.51 (22), p.1804-1806
Hauptverfasser:	Wong, Chi Shing, Lai, Yuk Ming, Loo, Ka Hong, Tse, Chi K
Format:	Artikel
Sprache:	eng
Schlagworte:	AC‐DC power convertors Asymmetry bridge circuits Constants Driver circuits Electric converters Electrolytic capacitors half bridge converter light emitting diode power supply Light-emitting diodes low current ripple LED driver Photonics power 60 W power factor correction Ripples Strings two phase LED driver
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