IDT ZSLS7025高亮LED升压控制方案

IDT公司的ZSLS7025是ZSLS LED控制IC系列产品,是用于高亮度LED的恒流升压转换器,输入电压从5V到100V,输出电流从几毫安到2A或更高.控制回路具有PWM架构,支持PWM或线性电压调光,效果显著高达95%,主要用在MR16照明,翻新照明, SELV照明,信号牌和户外照明,建筑物照明,LED背景光和通用低压工业和消费电子应用.本文介绍了ZSLS7025主要特性和优势,功能框图,应用电路,以及演示板ZSLS7025PCB-D1V1主要特性和优势,电路图和材料清单.

The ZSLS7025, one of the ZSLS Family of LED control ICs, is a constant current boost converter designed for driving high-brightness LEDs. It is optimal for driving multiple white LEDs connected in series so that the LED current is uniform for better brightness and color control. The wide input range and high output current enables diverse industrial, after-market automotive, and consumer lighting applications. The ZSLS7025 output current is adjustable via an external current sense resistor and can deliver stable constant output current from a few milliamps up to 2A or higher. The ZSLS7025 drives a constant current into the load. The control loop features a pulse frequency modulated (PFM) architecture that is inherently stable and does not need loop compensation. The ZSLS7025 supports pulse-width modulation (PWM) or linear voltage dimming, which allows flexible control of the LED luminance. The ZSLS7025 can operate in applications with a wide input voltage range from 5V to 100V. An integrated over-voltage protection (OVP) circuit protects the system, even under no-load conditions. The over-voltage protection is adjustable via external resistors R1 and R2.

ZSLS7025主要特性:

Wide application input voltage range: 5V to 100V (higher voltages also supported as described in section 2.1 in the data sheet)

Constant current output limited only by external component selection

No loop compensation required

Internal over-voltage protection

Internal over-temperature protection

Brightness control via P...