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TPS61141

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具有单个电感器、白光 LED 驱动器的 2x 27V、700mA 开关、1.2MHz 升压转换器，支持 22V 过压保护

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TPS61141

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产品详情

Number of channels 2 Vin (min) (V) 3 Vin (max) (V) 6 Vout (min) (V) 2.5 Vout (max) (V) 27 Type Inductive Switching frequency (max) (kHz) 1200 Duty cycle (max) (%) 93 LED current per channel (mA) 23 Peak efficiency (%) 85 Topology Boost Features Synchronous Rectification Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 2 Vin (min) (V) 3 Vin (max) (V) 6 Vout (min) (V) 2.5 Vout (max) (V) 27 Type Inductive Switching frequency (max) (kHz) 1200 Duty cycle (max) (%) 93 LED current per channel (mA) 23 Peak efficiency (%) 85 Topology Boost Features Synchronous Rectification Operating temperature range (°C) -40 to 85 Rating Catalog
VSON (DRC) 10 9 mm² 3 x 3
  • 2.5-V to 6-V Input Voltage Range
  • Two Outputs Each up to 27 V
  • 0.7-A Integrated Switch
  • Built-In Power Diode
  • 1.2-MHz PWM for WLED Driver
  • PFM for OLED Supply
  • Individually Programmable Output
  • Input to Output Isolation
  • Short-Circuit Protection
  • Built-In Soft Start
  • Overvoltage Protection
  • Up to 82% Efficiency
  • Up to 30 kHz PWM Dimming Frequency
  • Available in a 10 Pin, 3 × 3 mm QFN Package
  • APPLICATIONS
    • Clamshell Phone With OLED/LCD Screen
  • 2.5-V to 6-V Input Voltage Range
  • Two Outputs Each up to 27 V
  • 0.7-A Integrated Switch
  • Built-In Power Diode
  • 1.2-MHz PWM for WLED Driver
  • PFM for OLED Supply
  • Individually Programmable Output
  • Input to Output Isolation
  • Short-Circuit Protection
  • Built-In Soft Start
  • Overvoltage Protection
  • Up to 82% Efficiency
  • Up to 30 kHz PWM Dimming Frequency
  • Available in a 10 Pin, 3 × 3 mm QFN Package
  • APPLICATIONS
    • Clamshell Phone With OLED/LCD Screen

The TPS61140/1 is a dual output boost converter IC. It is intended to be configured as a highly integrated power solution providing regulated voltage and current output with one boost converter. This device is ideal for driving the OLED sub display and WLED backlight for the LCD main display in clam shell phones. The voltage and current can be individually programmed through external resistors. There is a dedicated selection pin for each output, so the two outputs can be turned on separately or simultaneously. When only the voltage output is enabled, the boost converter is controlled by pulse frequency modulation (PFM) in order to achieve high efficiency over a wide load range. If the current output is selected, the device adopts a 1.2-MHz pulse width modulation control (PWM) method in order to maximize output current. Applying an external PWM signal to the select pin (SELI) reduces the output current thereby allowing WLED dimming.

The TPS61140/1 has a built-in power MOSFET and power diode; thereby, eliminating the needs for any external active power components. In addition, the high switching frequency reduces the external inductor and capacitor sizes. Overall, the IC provides a highly compact solution with high efficiency and plenty of flexibility.

The TPS61140/1 is a dual output boost converter IC. It is intended to be configured as a highly integrated power solution providing regulated voltage and current output with one boost converter. This device is ideal for driving the OLED sub display and WLED backlight for the LCD main display in clam shell phones. The voltage and current can be individually programmed through external resistors. There is a dedicated selection pin for each output, so the two outputs can be turned on separately or simultaneously. When only the voltage output is enabled, the boost converter is controlled by pulse frequency modulation (PFM) in order to achieve high efficiency over a wide load range. If the current output is selected, the device adopts a 1.2-MHz pulse width modulation control (PWM) method in order to maximize output current. Applying an external PWM signal to the select pin (SELI) reduces the output current thereby allowing WLED dimming.

The TPS61140/1 has a built-in power MOSFET and power diode; thereby, eliminating the needs for any external active power components. In addition, the high switching frequency reduces the external inductor and capacitor sizes. Overall, the IC provides a highly compact solution with high efficiency and plenty of flexibility.

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类型 标题 下载最新的英语版本 日期
* 数据表 Dual Output Boost Regulator Using SIngle Inductor 数据表 (Rev. B) 2007年 3月 22日
白皮书 常见 LED 功能和 LED 驱动器设计注意事项 英语版 2020年 9月 21日
应用手册 Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 2018年 12月 11日
应用手册 Optimizing Transient Response of Internally Compensated DC-DC Converters (Rev. B) 2017年 11月 29日
应用手册 Extending the Soft Start Time Without a Soft Start Pin (Rev. B) 2017年 6月 15日
模拟设计期刊 IQ：它是什么、不是什么以及如何使用 英语版 2011年 8月 17日
应用手册 优化具有内部补偿功能的 DC-DC 转换器的瞬态响应 最新英语版本 (Rev.B) 2008年 7月 15日
应用手册 最小化升压转换器开关节点处的振铃 英语版 2008年 7月 15日

设计和开发

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评估板

TPS61140EVM-157 — TPS61140EVM 评估模块

The TPS61140EVM-157 is an evaluation tool for the TPS6114x family. This is a dual channel, single Inductor Boost Converter which is ideal for driving the OLED sub-display and white LED backlight for the LCD main display in clam shell phones.

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光绘文件

TPS6114xVM Gerber Files

SLVC138.ZIP (97 KB)
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订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

支持和培训

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