首页>
外国专利>
LED STRING DRIVER WITH POWER FACTOR CORRECTOR AND CURRENT GOVERNOR
LED STRING DRIVER WITH POWER FACTOR CORRECTOR AND CURRENT GOVERNOR
展开▼
机译:具有功率因数校正和电流调节器的LED灯驱动器
展开▼
页面导航
摘要
著录项
相似文献
摘要
A solid state lighting controller arranged for use with a single stage power factor correction switched mode power supply, a light emitting diode (LED) string and a current sense element arranged to sense current through the LED string, the solid state lighting controller constituted of: a current governor in series with the LED string exhibiting a governor differential amplifier and a governor electronically controlled switch responsive to the output of the governor differential amplifier, the current governor arranged to limit current flow through the LED string responsive to a current limit reference; and a feedback circuit exhibiting an error amplifier, the feedback circuit arranged to feedback a signal to the power factor correction switched mode power supply controller whose value is a function of the difference between the current through the LED string sensed by the current sense element and a target current signal.
展开▼