发明名称 |
Led driver current amplifier |
摘要 |
A circuit powering an electrical device based on a commanded current signal is provided. The circuit includes a linear current amplifier which sets a desired current flow. The circuit also dynamically controls a supply voltage in order to minimize power dissipation of the linear current amplifier. The circuit may also include a voltage drop measurement amplifier, a voltage shaping amplifier, and a switching power supply. The circuit is useful for controlling electrical devices requiring precise current control and minimal power dissipation, for example, driving light-emitting diodes (LEDs) that provide illumination inside the passenger compartment of a vehicle for an imaging occupant detection system.
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申请公布号 |
US2005152123(A1) |
申请公布日期 |
2005.07.14 |
申请号 |
US20040753620 |
申请日期 |
2004.01.08 |
申请人 |
VOREIS THOMAS L.;LI SONGNIAN |
发明人 |
VOREIS THOMAS L.;LI SONGNIAN |
分类号 |
H05B33/08;(IPC1-7):G03B15/02 |
主分类号 |
H05B33/08 |
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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