- 制造厂商：TI
- 产品类别：电源管理
- 技术类目：LCD 和 OLED 显示电源和驱动器
- 功能描述：4 通道 LCD 偏置，具有 GPM、VCOM、复位、LCD 放电、HVS、外部隔离开关和用于伽玛缓冲器的 LDO
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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.
- 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)
- Display type
- LCD unipolar
- IC integration
- LCD bias, VCOM
- Vin (Min) (V)
- 2.5
- Vin (Max) (V)
- 6
- Source driver voltage (Min) (V)
- 7
- Source driver voltage (Max) (V)
- 18
- Level shifter/scan driver (ch)
- 0
- V_POS (Max) (V)
- 18
- Features
- GPM or GVS, Output discharge, Reset generator, VCOM or op amp
- Topology
- Boost
- Rating
- Catalog
TPS65148的完整型号有：TPS65148RHBR，以下是这些产品的关键参数及官网采购报价：
TPS65148RHBR，工作温度：-40 to 85，封装：VQFN (RHB)-32，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TPS65148RHBR的批量USD价格：1.197（1000+）
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