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补偿和测量高功率LED驱动器的控制环路
资料介绍
By Jeff Falin Senior Applications Engineer A mathematical model is always helpful in determining the optimal compensation components for a particular design.
However, compensating the loop of a WLED current-
regulating boost converter is a bit different than compen-
sating the same converter configured to regulate voltage.
Measuring the control loop with traditional methods is cumbersome because of low impedance at the feedback
(FB) pin and the lack of a top-side FB resistor. In Reference 1, Ray Ridley has presented a simplified, small-signal control-loop model for a boost converter with current-mode control. The following explains how to modify Ridley's model so that it fits a WLED current-regulating boost converter; it also explains how to measure the boost converter's control loop.
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文件名 | 大小 |
补偿和测量高功率LED驱动器的控制环路.pdf | 2M |
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