基于PS92010設(shè)計(jì)的高效PWM LED驅(qū)動(dòng)方案

作者：時(shí)間：2010-05-20 來(lái)源：網(wǎng)絡(luò)

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PS92010是TI 公司的高效 PWM控制器，集成了頻率折返和低功耗工作模式，以降低輕負(fù)載和無(wú)負(fù)載時(shí)的工作頻率，從而提高LED驅(qū)動(dòng)的效率．主要用在住宅區(qū)LED照明驅(qū)動(dòng)以及各種LED照明．本文介紹了PS92010主要特性，方框圖，開(kāi)路測(cè)試電路，典型應(yīng)用電路以及離線LED照明驅(qū)動(dòng)模塊TPS92010EVM-592主要特性和電路圖與材料清單．

The TPS92010 is a PWM controller with advanced energy features to provide high efficiency driving for LED lighting applications.

The TPS92010 incorporates frequency fold back and low power mode operation to reduce the operation frequency at light load and no load operations.

The TPS92010 is offered in the 8-pin SOIC (D) package. Operating junction temperature range is C40℃ to 105℃.

PS92010主要特性：

LED Lighting Current Driver Controller with Energy Saving Features

Quasi-Resonant Mode Operation for Reduced EMI and Low Switching Losses (Low Voltage Switching)

Low Standby Current for Deep Dimming Efficiency Power Consumption

Low Startup Current: 25 µA Maximum

Programmable Line and Load Overvoltage Protection

Provides Open LED Protection

Internal Overtemperature Protection

Current Limit Protection

Cycle-by-Cycle Power Limit

Primary-Side Overcurrent Hiccup Restart Mode

1-A Sink TrueDrive, C0.75-A Source Gate Drive Output

Programmable Soft-Start

PS92010應(yīng)用：

Residential LED Lighting Drivers for A19 E12/E26/27, GU10, MR16, PAR30/38 Integral Lamps

Drivers for Wall Sconces, Pathway Lighting and Overhead Lighting

Drivers for Wall Washing, Architectural and Display Lighting