三重高压扫描驱动器，用于TFT -LCD Triple High-Voltage Scan Driver for TFT-LCD
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.
