发明名称 |
Method and system for improving start-up time of a light emitting diode (LED) driver at reduced input voltage |
摘要 |
Improving start-up time of a light emitting diode (led) driver at lower input voltage is accomplished with a quick start circuit comprising a constant current source that replaces the traditional trickle charge start-up path for charging of a Vcc capacitor supplying operating voltage to an SMPS controller. Also the constant current source will only be operational during SMPS start-up, then will turn off after the SMPS is capable of producing its own regulated power supply to the Vcc terminal of the SMPS controller, thereby minimizing E2/R power losses in the SMPS. |
申请公布号 |
US8629631(B1) |
申请公布日期 |
2014.01.14 |
申请号 |
US201113188043 |
申请日期 |
2011.07.21 |
申请人 |
RHODES SCOTT EDWARD;HOPKINS WILLIAM THOMAS;COOPER TECHNOLOGIES COMPANY |
发明人 |
RHODES SCOTT EDWARD;HOPKINS WILLIAM THOMAS |
分类号 |
G05F1/00 |
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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