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,采用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 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.
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