Detection circuit and detection method for a triac dimmer
A detection circuit configured to detect the presence of a TRIAC dimmer for an LED driver, can include: a sampling circuit configured to receive a DC bus voltage, and to generate a voltage sampling signal that characterizes the DC bus voltage; and a detector configured to determine whether the LED driver is provided with the TRIAC dimmer in accordance with a duration of the voltage sampling signal being continuously greater than a first reference voltage.
Silergy Semiconductor Technology (Hangzhou) LTD
H H H
H05B H05B H03K
inventional inventional inventional
Zhishuo Jianxin Huiqiang
Wang Wang Chen