Tung & Associates
Light emitting device power supply circuit, and light emitting device driver circuit and control method thereof
The present invention discloses a light emitting device power supply circuit, a light emitting device driver circuit and a control method thereof. The light emitting device driver circuit is coupled to a tri-electrode AC switch (TRIAC) dimmer circuit, and it controls the brightness of a light emitting device circuit according a rectified dimming signal. The light emitting device driver circuit includes a power stage circuit and a light emitting device control circuit. The light emitting device control circuit generates a switch control signal. The power stage circuit operates at least one power switch thereof according to the switch control signal to generate a latching current for firing the TRIAC dimmer circuit, and the latching current is inputted to the light emitting device circuit.
Richtek Technology Corporation
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inventional inventional additional
Leng-Nien Pei-Yuan Chia-Wei Jing-Meng
Hsiu Chen Liao Liu