用于驱动发光二极管(LED)的LED驱动器,包括电流调节单元,用于通过从电源设备向LED提供电源和切断该电源来调节流经LED的电流的幅值. For driving the light emitting diode (LED) LED driver, including current regulating means, for providing power from the power supply by cutting off the power to the LED ...
A semiconductor chip includes an LED driver circuit operably coupled to at least one LED and configured to supply a load current to the at least one LED such that an average load current matches a desired current level defined by a drive signal. A temperature measurement circuit is thermally ...
高亮度LED的工作电流一般为几百mA。为了延长LED的工作寿命,电流必须保持恒定;电源从本质上说是一个电流驱动器。可以通过几种方案实现,一个简单而且低成本的解决方案是:采用专用的电流模式PWM控制器IC,例如MAX16802。该器件的优点是: 高集成度—所需的外围元件很少 高达262kHz开关频率 微小的8引脚µMAX封装 较小的...
LED driver circuit and method An LED driver circuit and method are disclosed where an array of light emitting diodes have a transistor connected to each respective array of light emitting diodes. A PWM controller has an input for receiving a voltage reference and an ... DF Swanson,James W. ...
Specifications: Material: High-quality PCB and electronic components Power Input: AC165-265V Output Current: 220mA Compatibility: Suitable for 40-60W/60-80W LED strips Design: Sleek and compact, with a 15-degree driver for optimal lighting Performance: Overstable driver ensures consistent and relia...
本发明公开了隔离LED驱动电路,属于LED驱动的技术领域。 The present invention discloses an isolated LED driver circuit, which belongs to the technical field of the LED driver. 隔离LED驱动电路,包括续流二极管、变压器、辅助绕组、功率管、检测电阻、恒流控制器,LED与变压器原边绕组串联连接,续流二极管反向并联...
Below is a LED driver circuit using a linear regulator from Linear Technology, LT1083-12. The output of this regulator is 12V fixed. Still, a series resistor is needed to set a current level safe for the LEDs. The LED current in this circuit is261.6mA. ...
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DC-DC LED driver ICs with efficiencies up to 98%, dimming level down to 0.5% Infineon offers highly integrated DC-DC LED driver ICs that support currents up to 1.5A, making these drivers the ideal choice for high- and ultra-high-power LEDs. These highly integrated DC to DC LED driver ...
1.An LED driver circuit comprising:a diode bridge rectifier circuit that full-wave rectifies the alternating current to output the rectified output voltage;a first LED group, in which a plurality of first LEDs are connected in series and which is connected to the diode bridge rectifier circuit...