灯驱动方案样本VIP专享

下载后可任意编辑Infineon ILD4001 7W MR16 LED 灯驱动方案Infineon 公司的 ILD4001 是用来驱动室内和户外大功率 LED 的滞后降压 LED 控制器,可驱动外接 MOSFET 功率晶体管,LED 驱动电流可达 350mA 到 3A,电源电压高达 42V,采纳 DC 电压或 PWM 信号进行调光.本文介绍了 ILD4001 主要特性,框图和应用框图,以及 7W/10WMR16 LED 灯驱动板主要特性,电路图,材料清单和 PCB 设计图.The ILD4001 is a hysteretic buck LED controller IC for driving high power LEDs in indoor and outdoor lightingapplications.The LED controller is capable of driving an external MOSFET power transistor with the internal push-pull outputstage to achieve LED currents of 350 mA up to 3 A and more depending on the dimensioning of the MOSFET, thethermal budget of the circuit board and the current sense resistor.The ILD4001 is widely suitable for LED applications with supply voltages up to 42 V. A multifunctional enable pinallows dimming of the LEDs with DC voltage or a PWM signal. Furthermore the enable pin can be used to switchthe LED controller on and off to minimize power consumption in standby.The ILD4001 incorporates an integrated thermal shutdown 下载后可任意编辑function pulling low the Vdrive output signal once thejunction temperature exceeds the threshold temperature. Once the junction temperature drops below thethreshold temperature the Vdrive output is activated again.To provide maximum design flexibility, the ILD4001 is housed in a small SC-74 package.ILD4001 主要特性: Wide input voltage range: 4.5 V ... 42 V• Capable to drive N-channel MOSFETs that provide up to 3• A outputcurrent and up to 98% efficiency Temperature shut down mechanism• Switching frequency up to 500 kHz• Analog and PWM dimming possible• Typical 3 % output current accuracy• Very low LED current drift over...