TPS65162

TPS65162 www.ti.com SLVS771C – MAY 2007 – REVISED JULY 2012 Compact LCD Bias IC With High Speed Amplifiers for TV-LCD Panels Check for Samples: TPS65162 FEATURES 1 2 8-V to 14.7-V Input Voltage Range 500 kHz / 750 kHz Fixed Switching Frequency Boost Output Voltage up to 19 V – 1%-Accurate Boost With 2.8-A Switch Current Overvoltage Protection Input-to-Output Isolation Switch for Vs ShortCircuit protection for Boost 2.5-A Step-Down Converter Regulated Positive Charge-Pump Driver VGH Regulated Negative Charge-Pump Driver VGL Gate Voltage Shaping for VGH Soft Start for all Converters Two Integrated High-Speed Opamps – 50-MHz, 3-dB Bandwidth – Slew Rate 55 V / μs – 215-mA Short-Circuit Current 48 Pin 7x7 mm QFN Package APPLICATIONS LCD TV LCD Monitor DESCRIPTION The TPS65162 is a compact LCD bias IC with two high-speed operational amplifiers for the Vcom supply. The high current capability of the device is ideal for large LCD-monitor and LCD-TV applications. L1 Vin 10uH D1 12V Vs C1 C2 22uF 22uF C5 10uF C11 1uF C12 1uF R1 C7 39kΩ 220pF 15V/1.5A C8 C9 C10 22uF 22uF 22uF C4 22uF EN1 EN2 FREQ C11 1uF C12 22nF C13 22nF Enable Gate Voltage shaping VFLK VGL -5V/50mA C7 470nF C14 100pF D4D5 R3 200k C18 470nF R4 51k C19 220nF VIN SS VC CE VDPM VFLK DRVN FBN REF AGND PVIN PVIN SW SW AVIN SWI SWO SUP Boost Converter D S Gate Voltage Shaping 12 FB DRVP VGH FBP VGHM RE VDD CBOOT Buck Converter SWB SWB FBB DLY1 DLY2 GND R2 3.6kΩ ...