[原创]Infineon ILD8150调光低到0.5%大功率LED驱动器解决方案

Infineon公司的ILD8150是80V DC/DC降压转换器,用于驱动大功率LED.对于接近SELV极限的应用,ILD8150提供了高安全电压富余度.降压LED驱动器特别设计用于通用照明应用的LED,采用高边集成开关其平均电流可高达1.5A.器件集成了80V低RON的高边MOSFET,混合调光率0.5%目标电流.工作电压宽,为8V到80V,逐个周期的电流限制.器件具有欠压锁住,热保护等特性.器件可以无闪烁工作,数字软起动,集成下拉晶体管以避免LED发出暗淡的光.主要用在电子控制装置(ECG)的LED照明.本文介绍了ILD8150主要特性,功能框图, DC/DC降压恒流图以及可调白光驱动器框图,以及评估板主要特性,电路图,材料清单和PCB设计图.

The ILD8150 is a 80 V DC/DC converter IC for LED applications to drive high-power LEDs. For applicationsoperating close to SELV limits it provides a high safety voltage margin. The buck LED driver IC is tailored forLEDs in general lighting applications with average currents up to 1.5 A using a high-side integrated switch. Acomplete set of features and protections provide a well fit for professional LED lighting solutions.

Performance and innovation

The hysteretic current control provides an extremely fast regulation and stable LED current combined with goodEMI performance. The efficiency of the LED driver is remarkable high due to the low RON of the internal switch.

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