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TPS65165

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具有完全集成的正电荷泵、3.3V LDO 控制器、0.96A 最小升压电流限制和故障检测的 4 通道 LCD 偏置

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TPS65165

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产品详情

Display type LCD unipolar IC integration LCD bias, VCOM Vin (min) (V) 2.5 Vin (max) (V) 6 Applications 13 to 21 inches, 7 to 13 inches Source driver voltage (min) (V) 7 Source driver voltage (max) (V) 18 Level shifter/scan driver (Ch) 0 V_POS (max) (V) 30 V_NEG (max) (V) -2 Features GPM or GVS, VCOM or op amp Topology Boost Rating Catalog Operating temperature range (°C) -40 to 85
Display type LCD unipolar IC integration LCD bias, VCOM Vin (min) (V) 2.5 Vin (max) (V) 6 Applications 13 to 21 inches, 7 to 13 inches Source driver voltage (min) (V) 7 Source driver voltage (max) (V) 18 Level shifter/scan driver (Ch) 0 V_POS (max) (V) 30 V_NEG (max) (V) -2 Features GPM or GVS, VCOM or op amp Topology Boost Rating Catalog Operating temperature range (°C) -40 to 85
WQFN (RSB) 40 25 mm² (5 mm × 5 mm)
  • 2.5 V to 6.0 V Input Voltage Range
  • Vs Output Voltage up to 18 V
    • 1%-Accurate Boost Converter With 4.5 A Switch Current
    • 600 kHz Fixed Frequency PWM Operation
    • Overvoltage Protection
    • Adjustable Softstart
  • Regulated Positive Charge Pump Converter VGH
  • Integrated Gate Voltage Shaping of VGH
  • Regulated Negative Charge-Pump Driver VGL
  • Adjustable Sequencing for Vs and VGH
  • 3 Integrated High-Speed Operational Amplifiers
    • 50 MHz 3 db Bandwidth
    • Slew Rate 45 V/µs
    • 215 mA Short Circuit Current
  • High Voltage Test Mode (HVS)
  • Thermal Shutdown
  • 40-Pin 5×5-mm QFN Package
  • APPLICATIONS
    • LCD Monitor
    • LCD TV Panel
  • 2.5 V to 6.0 V Input Voltage Range
  • Vs Output Voltage up to 18 V
    • 1%-Accurate Boost Converter With 4.5 A Switch Current
    • 600 kHz Fixed Frequency PWM Operation
    • Overvoltage Protection
    • Adjustable Softstart
  • Regulated Positive Charge Pump Converter VGH
  • Integrated Gate Voltage Shaping of VGH
  • Regulated Negative Charge-Pump Driver VGL
  • Adjustable Sequencing for Vs and VGH
  • 3 Integrated High-Speed Operational Amplifiers
    • 50 MHz 3 db Bandwidth
    • Slew Rate 45 V/µs
    • 215 mA Short Circuit Current
  • High Voltage Test Mode (HVS)
  • Thermal Shutdown
  • 40-Pin 5×5-mm QFN Package
  • APPLICATIONS
    • LCD Monitor
    • LCD TV Panel

The TPS65165 is a Compact LCD Bias IC with 3 high-speed operational amplifiers for gamma correction and/or VCOM supply. The device generates all 3 voltage rails for TFT-LCD displays (Vs, VGL and VGH). The device incorporates a high-voltage switch that can be controlled by a logic signal from the timing controller (TCON) to provide the gate-voltage modulation for VGH. If this function is not required, the CTRL pin can be tied high.

The device also features a high-voltage stress test, where the output voltage of VGH is typically set to 30 V, and the output voltage of Vs is programmable to any higher voltage. The high-voltage stress test is enabled by pulling the HVS pin high. Adjustable sequencing is implemented, and can be programmed by selecting the capacitor values connected to ADLY and GDLY. The device consists of a boost converter to provide the source voltage Vs operating at a fixed switching frequency of 600 kHz. A fully integrated positive charge pump, switching automatically between doubler and tripler mode provides an adjustable regulated TFT gate on voltage VGH. A negative charge pump driver provides adjustable regulated output voltage VGL. To minimize external components the charge pumps for VGH and VGL operate at a fixed switching frequency of 1.2 MHz. The device includes safety features like overvoltage protection of the boost converter, short circuit protection of VGH and VGL as well as thermal shutdown.

The TPS65165 is a Compact LCD Bias IC with 3 high-speed operational amplifiers for gamma correction and/or VCOM supply. The device generates all 3 voltage rails for TFT-LCD displays (Vs, VGL and VGH). The device incorporates a high-voltage switch that can be controlled by a logic signal from the timing controller (TCON) to provide the gate-voltage modulation for VGH. If this function is not required, the CTRL pin can be tied high.

The device also features a high-voltage stress test, where the output voltage of VGH is typically set to 30 V, and the output voltage of Vs is programmable to any higher voltage. The high-voltage stress test is enabled by pulling the HVS pin high. Adjustable sequencing is implemented, and can be programmed by selecting the capacitor values connected to ADLY and GDLY. The device consists of a boost converter to provide the source voltage Vs operating at a fixed switching frequency of 600 kHz. A fully integrated positive charge pump, switching automatically between doubler and tripler mode provides an adjustable regulated TFT gate on voltage VGH. A negative charge pump driver provides adjustable regulated output voltage VGL. To minimize external components the charge pumps for VGH and VGL operate at a fixed switching frequency of 1.2 MHz. The device includes safety features like overvoltage protection of the boost converter, short circuit protection of VGH and VGL as well as thermal shutdown.
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技术文档

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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 Compact LCD Bias IC w/High Speed Amp for TV & Monitor TFT-LCD Panels 数据表 (Rev. A) 2007-5-25
应用手册 Understanding Undervoltage Lockout in Power Devices (Rev. A) 2018-9-19
选择指南 电源管理指南 2018 2018-7-31
应用手册 Generation of a VCOM buffer input using PWM signal 2015-12-21
应用手册 最小化升压转换器开关节点处的振铃 英语版 2008-7-15

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评估板

TPS65165EVM-233 — TPS65165 评估模块

The TPS65165EVM-233 takes a 2.5 V to 6 V input rail and provides the three bias-supply voltages and 3 integrated op amps that are required for TV and mointor TFT-LCD panels. The TPS65165EVM-233 has one boost converter with an integrated low-side FET, one negative charge-pump (...)

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