TPS65163 Datasheet, PDF (1/43 Pages) Texas Instruments – LCD Bias Supply With Integrated Level Shifters

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LCD Bias Supply With Integrated Level Shifters
Check for Samples :TPS65163
TPS65163
SLVSA28 – OCTOBER 2009
FEATURES
1
• 8.6-V to 14.7-V Input Voltage Range
• 2.8-A Boost Converter Switch Current Limit
• Boost Converter Output Voltages up to 18.5 V
• Boost and Buck Converter Short-Circuit
Protection
• 1.5-A Buck Converter (3.3 V) Switch Current
Limit
• Fixed 750-kHz Switching Frequency for Buck
and Boost Converters
• Buck Converter and Boost Converter
Soft-Start
• Two Charge-Pump Controllers to Regulate V_GH
and V_GL
• Control Signal for External High-Side MOSFET
Isolation Switch
• 9-Channel Level Shifter Organized in Two
Groups of 7 and 2 Channels (Separate V_GH)
• Gate Shaping (Level Shifter Channels 1 to 6)
• Display Panel Discharge Function
• Supports V_GH Voltages up to 38 V
• Supports V_GL Voltages Down to –13 V
• Reset Signal With Programmable Reset-Pulse
Duration
• Thermal Shutdown
• 48-Pin 7-mm × 7-mm QFN Package
APPLICATIONS
• LCD TVs and Monitors Using GIP Technology
DESCRIPTION
The TPS65163 integrates a boost converter, buck
converter, reset generator, two charge pump
controllers and a nine-channel level shifter in a single
device.
In typical display panel applications, the boost
converter generates the display panel source voltage,
V_S; the buck converter generates the system logic
supply, V_LOGIC; and the two charge pump controllers
regulate the external charge pumps generating the
display transistors’ on and off supplies, V_GH and V_GL.
The level shifters transform the logic-level control
signals generated by the display timing controller into
the high-level signals needed by the LCD panel. The
nine level-shifter channels are organized in two
groups, each with its own positive supply voltage
(V_GH). Each channel uses a low-impedance output
stage to achieve fast rise and fall times, even when
driving the capacitive loads present in LCD
applications. Channels 1 to 6 also support gate
voltage shaping.
The TPS65163 also provides a reset circuit that
monitors the buck converter output (V_LOGIC) and
generates a reset signal for the timing controller
during power up and power down.
A control signal can also be generated to control an
external MOSFET isolation switch located between
the output of the boost converter and the display
panel.
IN₁ to IN₉
FLK₁ to FLK₃
Isolation Switch
Control
Boost
Converter
Buck
Converter
Positive Charge
Pump Controller
Negative Charge
Pump Controller
Reset
Generator
Level Shifters
GD
V_S
V_LOGIC
V_GH
V_GL
RST
OUT₁ to OUT₉
Panel Discharge
DISCH
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 © 2009, Texas Instruments Incorporated