描述 Description

The TPS65191 is a triple high-voltage scan driver to drive an ASG (amorphous silicon gate) circuit on TFT glass. Each single high-voltage scan driver receives logic-level inputs of CPVx and generates two high-voltage outputs of CKVx, CKVBx. The device receives a logic-level input of STV and generates a high-voltage output of STVP. These outputs are swings from Voff (–28 V) to Von (35 V) and are used to drive the ASG circuit and charge/discharge the capacitive loads of the TFT LCD. In order to reduce the power dissipation of device, a charge-share function is implemented. The device features discharge function, which shorts Voff to GND in order to shut down the panel faster when the LCD is turned off.

特性 Features

·Triple High-Voltage Scan Driver
·Scan Driver Output Charge Share
·High Output-Voltage Level: Up to 35 V
·Low Output-Voltage Level: Down to –28 V
·Logic-Level Inputs
·32-pin 5-mm × 5-mm QFN Package
·APPLICATIONS ·TFT LCD Using ASG (Amorphous Silicon Gate) Technology