主页 电源管理 LED 驱动器 背光 LED 驱动器
主页
电源管理
LED 驱动器
背光 LED 驱动器

TPS61187

正在供货

适用于笔记本电脑的 WLED 驱动器，具有 PWM 接口和自动相移功能

立即订购
数据表

TPS61187

正在供货
数据表 立即订购

产品详情

Number of channels 6 Vin (min) (V) 5 Vin (max) (V) 24 Vout (min) (V) 5 Vout (max) (V) 40 Type Inductive Switching frequency (max) (kHz) 1000 Duty cycle (max) (%) 94 LED current per channel (mA) 30 Peak efficiency (%) 94 Topology Boost Features Load Disconnect During Shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 6 Vin (min) (V) 5 Vin (max) (V) 24 Vout (min) (V) 5 Vout (max) (V) 40 Type Inductive Switching frequency (max) (kHz) 1000 Duty cycle (max) (%) 94 LED current per channel (mA) 30 Peak efficiency (%) 94 Topology Boost Features Load Disconnect During Shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
WQFN (RTJ) 20 16 mm² (4 mm × 4 mm)
  • Input Voltage 4.5 V to 24 V
  • Maximum Output Voltage 38 V
  • Integrated 2-A, 40-V MOSFET
  • Programmable Switching Frequency 300 kHz to 1 MHz
  • Adaptive Boost Output to WLED Voltages
  • Wide PWM Dimming Frequency Range
    • 100 Hz to 50 KHz for Direct PWM Mode
    • 100 Hz to 22 KHz for Frequency Programmable Mode
  • 100:1 Dimming Ratio at 20 kHz
  • 10000:1 Dimming Ratio at 200 Hz (Direct PWM mode)
  • Small External Components
  • Integrated Loop Compensation
  • Six Current Sinks of 30 mA Maximum
  • 1.5% (Typical) Current Matching
  • PWM Brightness Interface Control
  • PWM Phase Shift Mode Brightness Dimming Method or Direct PWM Dimming Method
  • HBM ESD Protection 4 kV
  • Programmable Overvoltage Threshold
  • Built-in WLED Open/Short Protection
  • Thermal Shutdown
  • Input Voltage 4.5 V to 24 V
  • Maximum Output Voltage 38 V
  • Integrated 2-A, 40-V MOSFET
  • Programmable Switching Frequency 300 kHz to 1 MHz
  • Adaptive Boost Output to WLED Voltages
  • Wide PWM Dimming Frequency Range
    • 100 Hz to 50 KHz for Direct PWM Mode
    • 100 Hz to 22 KHz for Frequency Programmable Mode
  • 100:1 Dimming Ratio at 20 kHz
  • 10000:1 Dimming Ratio at 200 Hz (Direct PWM mode)
  • Small External Components
  • Integrated Loop Compensation
  • Six Current Sinks of 30 mA Maximum
  • 1.5% (Typical) Current Matching
  • PWM Brightness Interface Control
  • PWM Phase Shift Mode Brightness Dimming Method or Direct PWM Dimming Method
  • HBM ESD Protection 4 kV
  • Programmable Overvoltage Threshold
  • Built-in WLED Open/Short Protection
  • Thermal Shutdown

The TPS61187 device provides a highly integrated white-light-emitting-diode (WLED) driver solution for notebook LCD backlight. This device has a built-in high efficiency boost regulator with integrated 2-A, 40-V power MOSFET. The six current sink regulators provide high precision current regulation and matching. In total, the device can support up to 60 WLEDs. In addition, the boost output automatically adjusts its voltage to the WLED forward voltage to optimize efficiency.

The TPS61187 supports the automatic phase-shift-dimming method and direct-PWM-dimming method. During phase-shift-PWM dimming, the WLED current is turned on and turned off at the duty cycle controlled by the input PWM signal, and each channel is shifted according to the frequency determined by an integrated pulse-width-modulation (PWM) signal. The frequency of this signal is resistor programmable, while the duty cycle is controlled directly from an external PWM signal input to the PWM pin. During direct PWM dimming, the WLED current is turned on and/or turned off synchronized with the input PWM signal.

For all available packages, see the orderable addendum at the end of the data sheet.

The TPS61187 device provides a highly integrated white-light-emitting-diode (WLED) driver solution for notebook LCD backlight. This device has a built-in high efficiency boost regulator with integrated 2-A, 40-V power MOSFET. The six current sink regulators provide high precision current regulation and matching. In total, the device can support up to 60 WLEDs. In addition, the boost output automatically adjusts its voltage to the WLED forward voltage to optimize efficiency.

The TPS61187 supports the automatic phase-shift-dimming method and direct-PWM-dimming method. During phase-shift-PWM dimming, the WLED current is turned on and turned off at the duty cycle controlled by the input PWM signal, and each channel is shifted according to the frequency determined by an integrated pulse-width-modulation (PWM) signal. The frequency of this signal is resistor programmable, while the duty cycle is controlled directly from an external PWM signal input to the PWM pin. During direct PWM dimming, the WLED current is turned on and/or turned off synchronized with the input PWM signal.

For all available packages, see the orderable addendum at the end of the data sheet.
filter 查找其他 背光 LED 驱动器
下载 观看带字幕的视频 视频

技术文档

未找到结果。请清除搜索并重试。
查看全部 5
顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 TPS61187 White-LED Driver For Notebooks With PWM Interface and Automatic Phase Shift 数据表 (Rev. E) PDF | HTML 2016-12-29
白皮书 常见 LED 功能和 LED 驱动器设计注意事项 英语版 2020-9-21
应用手册 Some Guidelines and Tips for the LED Driver Application 2019-8-14
应用手册 Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 2018-12-11
选择指南 电源管理指南 2018 2018-7-31

设计与开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

评估板

TPS61187EVM-528 — TPS61187EVM-528 评估模块

TPS61183/7EVM-528 评估模块包含德州仪器 (TI) 配置为 WLED 电源解决方案的 TPS61183 或 TPS61187 IC，可使用单个感应升压转换器提供多达六个独立调节的电流输出。这种电流输出非常适合驱动笔记本电脑/膝上型电脑的 WLED 背光。本用户指南涵盖 EVM 规范、推荐测试设置、测试结果、材料清单以及原理图。
用户指南: PDF
支持的产品和硬件
有库存
限制：
??asset.out-of-stock-ti_zh_CN??
无货
封装 引脚 CAD 符号、封装和 3D 模型
WQFN (RTJ) 20 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

订购和质量

推荐产品可能包含与 TI 此产品相关的参数、评估模块或参考设计。

支持和培训

可获得 TI 工程师技术支持的 TI E2E™ 论坛

查看全部论坛主题 查看英文版全部论坛主题

所有内容均由 TI 和社区贡献者按“原样”提供，并不构成 TI 规范。请参阅使用条款。

如果您对质量、包装或订购 TI 产品有疑问，请参阅 TI 支持。​​​​​​​​​​​​​​

视频