发明名称 |
LED driving circuit |
摘要 |
In one embodiment an LED driving circuit can include: (i) a rectifier circuit configured to receive an AC input power supply through a TRIAC, and to generate a bus voltage; (ii) a driving current generator configured to convert the bus voltage to a constant driving current and an output voltage to drive an LED load; and (iii) a current distribution circuit coupled between a positive pole and a negative pole of the bus voltage, where the current distribution circuit is configured to sample an input current to generate a sense signal, and to compare the sense signal against a voltage reference signal that represents an expected input current, so as to regulate the input current according to the voltage reference signal. |
申请公布号 |
US9491817(B2) |
申请公布日期 |
2016.11.08 |
申请号 |
US201615060762 |
申请日期 |
2016.03.04 |
申请人 |
Silergy Semiconductor Technology (Hangzhou) LTD |
发明人 |
Wang Zhaofeng |
分类号 |
H05B33/08 |
主分类号 |
H05B33/08 |
代理机构 |
|
代理人 |
Stephens, Jr. Michael C. |
主权项 |
1. An LED driving circuit, comprising:
a) a rectifier circuit configured to receive an AC input power supply through a tri-electrode AC switch (TRIAC), and to generate a bus voltage; b) a driving current generator configured to convert said bus voltage to a constant driving current and an output voltage to drive an LED load; and c) a current distribution circuit coupled between a positive pole and a negative pole of said bus voltage, wherein said current distribution circuit is configured to sample an input current to generate a sense signal, and to compare said sense signal against a voltage reference signal that represents an expected input current, so as to regulate said input current according to said voltage reference signal. |
地址 |
Hangzhou CN |