TPS65176

用于电视的 LCD 偏置 IC

The provides a simple and economic power supply solution for a wide variety of LCD bias applications. A buck converter generates a logic supply for the timing controller T-CON while a boost converter generates the AVDD voltage to power the Source Driver ICs. Two regulated charge pump controllers generate VGON and VGOFF with very few external components to turn on and off the display transistors. The sequencing of the supplies at power on is fully controllable by the user. The TPS65176 also includes various protection mechanisms to ensure the safe operation of the LCD panels.

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9.5V to 14V Input Voltage Range

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Up to 18.5V Boost Converter with 3.5-A Switch Current

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500kHz to 2 MHz Adjustable Switching Frequency for Boost Converter

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2.5-A Buck Converter Switch Current Limit

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Fixed 750kHz Switching Frequency for Buck Converter

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Two Charge Pump Controllers for VGON and VGOFF

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Adjustable Power-on Sequence

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Gate Driver Signal for Isolation Switch

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Internal Soft-Start

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Undervoltage Lockout

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Over Voltage Protection

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Short Circuit Protection

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Thermal Shutdown