TPS65160

4 通道 LCD 偏置（2.8A 最低 升压 Ilim. 高达 20V，2A 最低 降压 Ilim）

The offers a compact power supply solution to provide all four voltages required by thin-film transistor TFT LCD panel. With its high current capabilities, the device is ideal for large screen monitor panels and LCD TV applications.

The device can be powered directly from a 12-V input voltage generating the bias voltages VGH and VGL, as well as the source voltage VS and logic voltage for the LCD panels. The device consists of a boost converter to provide the source voltage VS and a step-down converter to provide the logic voltage for the system. A positive and a negative charge-pump driver provide adjustable regulated output voltages VGL and VGH to bias the TFT. Both boost and step-down converters, as well as the charge-pump driver, operate with a fixed switching frequency of 500 kHz or 750 kHz, selectable by the FREQ pin. The TPS65160 includes adjustable power-on sequencing. The device includes safety features like overvoltage protection of the boost converter and short-circuit protection of the buck converter, as well as thermal shutdown. Additionally, the device incorporates a gate drive signal to control an isolation MOSFET switch in series with VS or VGH. See the application circuits at the end of this data sheet.

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8-V to 14-V Input Voltage Range

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VS Output Voltage Range up to 20 V

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1% Accurate Boost Converter With 2.8-A Switch Current

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1.5% accurate 1.8-A Step-Down Converter

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500-kHz/750-kHz Fixed Switching Frequency

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Negative Charge Pump Driver for VGL

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Positive Charge Pump Driver for VGH

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Adjustable Sequencing for VGL, VGH

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Gate Drive Signal to Drive External MOSFET

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Internal and Adjustable Soft Start

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Short-Circuit Protection

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23-V TPS65160 Overvoltage Protection

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19.5-V TPS65160A Overvoltage Protection

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Thermal Shutdown

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Available in HTSSOP-28 Package