TPS65148 - Compact TFT LCD Bias IC with Boost Converter, VCOM Buffer, Voltage Regulator for Gamma Buffer and Re

TPS65148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，TPS65148是Compact TFT LCD Bias IC with Boost Converter, VCOM Buffer, Voltage Regulator for Gamma Buffer and Re，本站介绍了TPS65148的封装应用图解、特点和优点、功能等，并给出了与TPS65148相关的TI元器件型号供参考。

TPS65148 - Compact TFT LCD Bias IC with Boost Converter, VCOM Buffer, Voltage Regulator for Gamma Buffer and Re - 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 TPS65148 offers a compact power supply solution designed to supply the LCD bias voltages required by TFT (Thin Film Transistor) LCD panels running from a typical 5 V supply rail. The device integrates a high power step-up converter for VS (Source Driver voltage), an accurate voltage rail using an integrated LDO to supply the Gamma Buffer (VREG_O) and a Vcom buffer driving the LCD backplane. In addition to that, a gate voltage shaping block is integrated. The VGH signal (Gate Driver High voltage) supplied by an external positive charge pump, is modulated into VGHM with high flexibility by using a logic input VFLK and an external discharge resistor connected to the RE pin. Also, an external negative charge pump can be set using the boost converter of the TPS65148 to generate VGL (Gate Driver Low voltage). The integrated reset function together with the LCD discharge function available in the TPS65148 provide the signals enabling the discharge of the LCD TFT pixels when powering-off. The device includes safety features like overcurrent protection (OCP) and short-circuit protection (SCP) achieved by an external input-to-output isolation switch, as well as overvoltage protection (OVP) and thermal shutdown.

产品特性

2.5V to 6V Input Voltage Range
Up to 18V Boost Converter With 4A Switch Current
630kHz/1.2MHz Selectable Switching Frequency
Adjustable Soft-Start for the Boost Converter
Gate Driver for External Input-to-Output Isolation Switch
0.5% Accuracy Voltage Regulator for Gamma Buffer
Gate Voltage Shaping
VCOM Buffer
Reset Function (XAO Signal)
LCD Discharge Function
Overvoltage Protection
Overcurrent Protection
Thermal Shutdown
32-Pin 5∗5mm QFN Package
APPLICATIONS
- Monitor
- TV (5V Input Voltage)

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