TPS65155 Datasheet, PDF (1/36 Pages) Texas Instruments – LCD Bias Solution with Level Shifters for GOA Panels

TPS65155
www.ti.com
SLVSB29 – JANUARY 2012
LCD Bias Solution with Level Shifters for GOA Panels
Check for Samples: TPS65155
FEATURES
1
• 3 V to 6 V Input Voltage Range
• Boost Converter With 4 A Switch Current Limit
• Boost Converter Output Voltages up to 18 V
• Boost Converter Overvoltage Protection
• Selectable Switching Frequency (640 kHz or
1.2 MHz)
• Programmable Boost Converter Soft-Start
• Temperature-Compensated Positive Charge
Pump Controller
• Negative Charge Pump Controller
• 4 + 2 Channels of Level Shifters
• XAO Reset Signal
• Thermal Shutdown
• 40-Pin 5×5 mm QFN Package
DESCRIPTION
The TPS65155 provides an integrated bias and level
shifter solution for GOA panels.
The device integrates a boost converter to generate
the source driver supply voltage (V_AVDD), positive and
negative charge pump controllers to generate gate
driver ON (V_GH) and OFF (V_GL) voltages, and an
6-channel level shifter in a single IC. The positive
charge pump controller supports temperature
compensation to reduce V_GH at high temperatures.
In addition to the above functions, the TPS65155
generates an additional active-low XAO reset output.
Supply sequencing during power-up can be controlled
by an externally generated enable signal.
V_IN
3.3 V
AVDD Boost Converter
AVDD
9 V/300 mA
APPLICATIONS
• LCD Monitors or Notebook Panels using GOA
Technology
Positive Charge Pump Controller
With Temperature Compensation
Negative Charge Pump Controller
V_GHM
24 V/20 mA
V_GL
-6 V/20 mA
Reset Function
XAO
4
4
4-phase level
shifter
4 + 2 Channel
2
Level Shifter
2
STVOUT
RESETOUT
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2012, Texas Instruments Incorporated