Texas Instruments TPS92411 100V 浮动 MOSFET 开关
德州仪器 TPS92411 100V 浮动 MOSFET 开关与能够实现大于 0.9 功率因数的电流稳压器一同使用，以生成具有低纹波电流的 LED 驱动解决方案。当设计正确时，解决方案性能与基于传统反激式、降压或升压的交流/直流 LED 驱动器相类似。此方法无需电感组件，从而减小了尺寸并节约了成本。TPS92411 开关的转换受控低频运行仅生成极小的 EMI。封装选项包括SOT23-5 和 PSOP-8，从而使用户能够得到小尺寸或高功率。使用 PSOP-8 封装，LED 光源的设计有可能高达 70W。其他特点包括一个欠压闭锁 (UVLO) 电路以监控器件何时具有正常运转所需的足够电压以及过压保护功能 (TPS92411P)。
特性
- High-Performance Solution for Driving LEDs from AC Mains
- Simplifies Design of Phase Dimmable LED Driver with High Power Factor, Low Total Harmonic Distortion, and Low Current Ripple
- Suitable for LED Lamp and Luminaires up to 70 W
- Input Voltage Range: 7.5 V to 100 V
- Stackable 100V, 2-Ω MOSFET Building Block
- Up to 350 mA Current Capability (PSOP package)
- Controlled Switch Open and Close Transitions Minimize EMI
- Input Undervoltage Protection
- Output Overvoltage Protection (TPS92411P)
- Low IQ: 200 µA (typ)
应用
- LED Lamps and Light Bulbs
- LED Luminaires
- Downlights
视频
Related Product
Texas Instruments TPS92410 开关控制式直接驱动线性控制器
具有高压启动功能的线性驱动器，被设计用于低功耗、离线 LED 照明。
Evaluation Modules
Texas Instruments TPS92411EVM-001 and TPS92411EVM-002 evaluation modules help designers evaluate the operation and performance of the TPS92411P direct drive switch. TPS92411EVM-001 implements a 120VAC, 12W, phase dimmable light engine with high power factor and low LED current ripple on a single-sided metal core printed circuit board. The included LED drive circuit is comprised of a high voltage linear regulator and TPS92411 floating switches arranged to toggle three segments of a high-voltage LED string at eight discrete points during an AC half-cycle. Unlike traditional switched mode power supply converters, TPS92411EVM-001 uses no magnetic components or high speed switching for power processing. TPS92410VEVM-002 implements a 230V linear regulator dimming solution using the TPS92410 Switch Controlled Direct Drive Linear Controller and TPS92411 100V Floating MOSFET Switch.