The TPS65160 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.
View datasheet View product folder