| 发明名称 |
Diode emulator circuit |
| 摘要 |
A controller for a buck regulator for a lighting system including light emitting diodes includes a voltage control loop configured to compare a voltage reference and a feedback voltage. The feedback voltage is based upon a DC supply voltage to the controller. A voltage regulator is configured to receive an output of the voltage control loop and to generate a current reference. A current control loop is configured to receive a feedback current and to compare the current reference to the feedback current. A current regulator is configured to receive an output of the current control loop. A pulse width modulation circuit is configured to receive an output of the current regulator and to generate drive signals for first and second switches of the buck regulator. |
| 申请公布号 |
US9144137(B1) |
申请公布日期 |
2015.09.22 |
| 申请号 |
US201313856295 |
申请日期 |
2013.04.03 |
| 申请人 |
Marvell International Ltd. |
发明人 |
Sutardja Sehat;Sutardja Pantas;Zhang Wanfeng |
| 分类号 |
H05B37/00;H05B37/02 |
主分类号 |
H05B37/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A controller for a buck regulator for a lighting system including light emitting diodes, comprising:
a voltage control loop configured to compare a voltage reference and a feedback voltage, wherein the feedback voltage is based upon a DC supply voltage to the controller; a voltage regulator configured to receive an output of the voltage control loop and to generate a current reference; a current control loop configured to receive a feedback current and to compare the current reference to the feedback current; a current regulator configured to receive an output of the current control loop; and a pulse width modulation circuit configured to receive an output of the current regulator and to generate drive signals for first and second switches of the buck regulator. |
| 地址 |
Hamilton BM |
