TPS65165 - Compact LCD Bias IC w/High Speed Amp for TV & Monitor TFT-LCD Panels

TPS65165是TI德州仪器公司的一款电流感应放大器、I2C/PMBus监控器产品，TPS65165是Compact LCD Bias IC w/High Speed Amp for TV & Monitor TFT-LCD Panels，本站介绍了TPS65165的封装应用图解、特点和优点、功能等，并给出了与TPS65165相关的TI元器件型号供参考。

TPS65165 - Compact LCD Bias IC w/High Speed Amp for TV & Monitor TFT-LCD Panels - 电流感应放大器、I2C/PMBus监控器 - 保护、监控和热插拔 - 德州仪器

产品描述

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.

产品特性

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

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