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[原创] Infineon TLD5099EP大功率LED应用方案

关键词:电源管理 LED驱动器 DC/DC转换器 TLD5099EP

时间:2020-05-08 11:18:15       来源:中电网

Infineon公司的TLD5099EP是灵活有用的DC/DC升压控制器,内置诊断和保护特性,特别设计用来驱动LED.器件还包括脉宽调制器以容易实现调光彩功能,和降低色彩偏移,它的广谱调制器改善了EMI性能.器件在多种拓扑如升压,降压-升压,SEPIC和反激中支持固定电流和固定电压配置. TLD5099EP以内部5V线性稳压器来驱动低边N沟功率MOSFET.开关频率在100kHz到500kHz间可调,并和外部时钟源同步.输入电压范围从4.5V到45V,模拟调光和PWM调光,调整LED平均电流.主要用在汽车外部和内部照明,通用照明以及通用电流/电压控制DC/DC驱动器.中电网为您整理如下详细资料,本文介绍了TLD5099EP主要特性,框图和开关稳压器框图,多种应用电路,以及大功率LED应用评估板主要特性和主要电性能指标,电路图,材料清单和PCB设计图.

The TLD5099EP is a flexibly usable DC/DC boost controller with built indiagnosis and protection features especially designed to drive LEDs. It alsoincludes a pulse width modulator to easily implement a dimming functionwith reduced color shifting and a spread spectrum modulator to improve the EMI performance.

It is designed to support fixed current and fixed voltage configurations in multiple topologies such as Boost,Buck, Buck-Boost, SEPIC and Flyback by simply adjusting the external components. The TLD5099EP drives alow side n-channel power MOSFET from an internal 5 V linear regulator.

The switching frequency is adjustable in the range of 100 kHz to 500 kHz and can also be synchronized to anexternal clock source. A spread spectrum modulator can be activated to improve the EMI, by mov..

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