发明名称 |
LED driver circuit and LED lighting device using the same |
摘要 |
Provided is an LED driver circuit, to be connected to an AC power supply via a phase-control dimmer, for driving an LED load, including: a switching power supply part including a switching element and a switching current detection part; an LED current detection part; a first control part for controlling and switching the switching element so that a switching current has a desired current value based on a detection signal of the switching current detection part; a second control part for controlling and switching the switching element so that an LED current has a desired current value based on a detection signal of the LED current detection part; and a switch part for switching between control performed by the first control part when the phase-control dimmer is set to high brightness dimming and control performed by the second control part when the phase-control dimmer is set to low brightness dimming. |
申请公布号 |
US8643301(B2) |
申请公布日期 |
2014.02.04 |
申请号 |
US201113198929 |
申请日期 |
2011.08.05 |
申请人 |
KANAMORI ATSUSHI;SHIMIZU TAKAYUKI;WARITA HIROHISA;SHOJI HIROYUKI;SHARP KABUSHIKI KAISHA |
发明人 |
KANAMORI ATSUSHI;SHIMIZU TAKAYUKI;WARITA HIROHISA;SHOJI HIROYUKI |
分类号 |
G05F1/00;H05B39/04 |
主分类号 |
G05F1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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