GPM的3通道LCD偏置,用于隔離開關的VCOM緩沖器和閘極驅動器
TheTPS65150PWPRis a very compact Power Supply IC that provides all three voltages required by thin film transistor (TFT) LCD displays. Two regulated adjustable charge pump driver provide the positive V(VGH) and negative V(VGL) bias voltages for the TFT. The device incorporates adjustable power-ON sequencing for V(VGL)as well as for V(VGH). This avoids any additional external components to implement application specific sequencing. The device has an integrated high-voltage switch to isolate V(VGH). The same internal circuit can also be used to provide a gate shaping signal of V(VGH) for the LCD panel controlled by the signal applied to the CTRL input. The device monitors the outputs (V(VS), V(VGL), V(VGH)), and, as soon as one of the outputs falls below its power good threshold, the device enters shutdown latch, after its adjustable delay time has passed by.
. Integrated VCOM buffer . High-voltage switch to isolate V(VGH) . Gate-voltage shaping of V(VGH) . 2A Internal MOSFET switch . Main output V(VS) up to 15V With <1% Output voltage accuracy . Virtual-synchronous converter technology . Regulated negative charge pump driver V(VGL) . Regulated positive charge pump driver V(CPI) . Adjustable power-ON sequencing . Adjustable fault detection timing . Gate drive signal for external isolation MOSFET . Out-of-regulation protection . Overvoltage protection . Thermal shutdown
