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LCD 及 OLED 顯示器電源和驅動器

TPS65140

現行

4 通道 LCD 偏壓，具有完全整合的位置電荷泵、3.3V LDO 控制器，1.6A 最小升壓 Ilim 和故障偵測

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產品規格表

TPS65140

現行
產品規格表 立即訂購

產品詳細資料

Display type LCD unipolar IC integration LCD bias Vin (min) (V) 2.7 Vin (max) (V) 5.5 Applications 13 to 21 inches, 7 to 13 inches Source driver voltage (min) (V) 5 Source driver voltage (max) (V) 15 Level shifter/scan driver (Ch) 0 V_POS (max) (V) 30 V_NEG (max) (V) -2 Topology Boost Rating Catalog Operating temperature range (°C) -40 to 85
Display type LCD unipolar IC integration LCD bias Vin (min) (V) 2.7 Vin (max) (V) 5.5 Applications 13 to 21 inches, 7 to 13 inches Source driver voltage (min) (V) 5 Source driver voltage (max) (V) 15 Level shifter/scan driver (Ch) 0 V_POS (max) (V) 30 V_NEG (max) (V) -2 Topology Boost Rating Catalog Operating temperature range (°C) -40 to 85
HTSSOP (PWP) 24 49.92 mm² 7.8 x 6.4 VQFN (RGE) 24 16 mm² 4 x 4
  • 2.7-V to 5.8-V Input Voltage Range
  • 1.6-MHz Fixed Switching Frequency
  • 3 Independent Adjustable Outputs
  • Main Output up to 15 V With <1% Typical Output
    Voltage Accuracy
  • Virtual Synchronous Converter Technology
  • Negative Regulated Charge Pump Driver VO2
  • Positive Charge Pump Converter VO3
  • Auxiliary 3.3-V Linear Regulator Controller
  • Internal Soft Start
  • Internal Power-On Sequencing
  • Fault Detection of All Outputs (TPS65140 and
    TPS65145)
  • No Fault Detection (TPS65141)
  • Thermal Shutdown
  • System Power Good
  • Available in 24-Pin HTSSOP and 24-Pin VQFN
    PowerPAD™ Packages
  • 2.7-V to 5.8-V Input Voltage Range
  • 1.6-MHz Fixed Switching Frequency
  • 3 Independent Adjustable Outputs
  • Main Output up to 15 V With <1% Typical Output
    Voltage Accuracy
  • Virtual Synchronous Converter Technology
  • Negative Regulated Charge Pump Driver VO2
  • Positive Charge Pump Converter VO3
  • Auxiliary 3.3-V Linear Regulator Controller
  • Internal Soft Start
  • Internal Power-On Sequencing
  • Fault Detection of All Outputs (TPS65140 and
    TPS65145)
  • No Fault Detection (TPS65141)
  • Thermal Shutdown
  • System Power Good
  • Available in 24-Pin HTSSOP and 24-Pin VQFN
    PowerPAD™ Packages

The TPS6514x series offers a compact and small power supply solution to provide all three voltages required by thin film transistor (TFT) LCD displays. The auxiliary linear regulator controller can be used to generate a 3.3-V logic power rail for systems powered by a 5-V supply rail only.

The main output VO1 is a 1.6-MHz fixed frequency PWM boost converter providing the source drive voltage for the LCD display. The device is available in two versions with different internal switch current limits to allow the use of a smaller external inductor when lower output power is required. The TPS65140 and TPS65141 has a typical switch current limit of 2.3 A and the TPS65145 has a typical switch current limit of 1.37 A. A fully integrated adjustable charge pump doubler or tripler provides the positive LCD gate drive voltage. An externally adjustable negative charge pump provides the negative gate drive voltage. Due to the high 1.6-MHz switching frequency of the charge pumps, inexpensive and small 220-nF capacitors can be used.

Additionally, the TPS6514x series has a system power good output to indicate when all supply rails are acceptable. For LCD panels powered by 5 V the device has a linear regulator controller using an external transistor to provide a regulated 3.3-V output for the digital circuits. For maximum safety, the TPS65140 and TPS65145 goes into shutdown as soon as one of the outputs is out of regulation. The device can be enabled again by toggling the input or the enable (EN) pin to GND. The TPS65141 does not enter shutdown when one of its outputs is below its power good threshold.

The TPS6514x series offers a compact and small power supply solution to provide all three voltages required by thin film transistor (TFT) LCD displays. The auxiliary linear regulator controller can be used to generate a 3.3-V logic power rail for systems powered by a 5-V supply rail only.

The main output VO1 is a 1.6-MHz fixed frequency PWM boost converter providing the source drive voltage for the LCD display. The device is available in two versions with different internal switch current limits to allow the use of a smaller external inductor when lower output power is required. The TPS65140 and TPS65141 has a typical switch current limit of 2.3 A and the TPS65145 has a typical switch current limit of 1.37 A. A fully integrated adjustable charge pump doubler or tripler provides the positive LCD gate drive voltage. An externally adjustable negative charge pump provides the negative gate drive voltage. Due to the high 1.6-MHz switching frequency of the charge pumps, inexpensive and small 220-nF capacitors can be used.

Additionally, the TPS6514x series has a system power good output to indicate when all supply rails are acceptable. For LCD panels powered by 5 V the device has a linear regulator controller using an external transistor to provide a regulated 3.3-V output for the digital circuits. For maximum safety, the TPS65140 and TPS65145 goes into shutdown as soon as one of the outputs is out of regulation. The device can be enabled again by toggling the input or the enable (EN) pin to GND. The TPS65141 does not enter shutdown when one of its outputs is below its power good threshold.
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您可能會感興趣的類似產品

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功能相似於所比較的產品
TPS65100 現行 4 通道 LCD 偏壓，具完全整合正電荷泵、3.3V LDO 控制器，1.6A 最小升壓 Ilim、故障和 VCOM This product is an LCD supply with the same features plus a Vcom.
TPS65150 現行 具整合式 VCOM 緩衝器的通用小型 LCD 偏壓電源 This product has the same features, adds a Vcom, and has no LDO.

技術文件

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類型 標題 日期
* Data sheet TPS6514x Triple Output LCD Supply With Linear Regulator and Power Good datasheet (Rev. F) PDF | HTML 2016年 6月 29日
Application note Basic Calculation of a Boost Converter's Power Stage (Rev. D) PDF | HTML 2022年 10月 28日
Application note Understanding Undervoltage Lockout in Power Devices (Rev. A) 2018年 9月 19日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
Application note Basic calculation of an inverting buck-boost power stage (Rev. A) 2017年 8月 28日
Application note How to Estimate the Output Voltage Range of the Charge Pumps in the TPS6510x 2017年 8月 8日
Application note How to Compensate the TPS6510x and the TPS6514x 2016年 8月 30日
Application note Generation of a VCOM buffer input using PWM signal 2015年 12月 21日
Application note Minimizing Ringing at the Switch Node of a Boost Converter 2006年 9月 15日
Application note Customizing your TPS6510x/TPS6514X 2004年 6月 22日
EVM User's guide TPS65140EVM-031 User's Guide 2004年 2月 5日

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開發板

TPS65100EVM-030 — TPS65100 評估模組

TPS65100EVM-030 是適用於 TFT LCD 顯示器的 TPS6510x 多通道電源供應器的評估工具。評估模組可接受 2.7V 至 5.8V 的輸入電壓，並提供 10V、-5V 和 23V 以開啟 TFT 顯示器電源。其他電壓則可透過變更電阻器回饋網路來進行調整。此外，TPS6510x 還提供 VCOM 緩衝器電壓，以及整合式 3.3-V LDO 控制器。
使用指南: PDF
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開發板

TPS65140EVM-031 — TPS65140 評估模組

The TPS65140EVM-031 is an evaluation tool for the TPS6514x multi-channel power supply for TFT LCD displays. The evaluation module can accept input voltages in range of 2.7V to 5.8V and supplies 10V, -5V and 23V to power a TFT display. Other voltages can be adjusted by changing resistor feedback (...)
使用指南: PDF
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PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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