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TPS65167 Datasheet Preview

TPS65167 Datasheet

Compact LCD Bias Supply

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www.ti.com
TPS65167
TPS65167A
SLVS760C – APRIL 2007 – REVISED MARCH 2008
Compact LCD Bias Supply for TFT-LCD TV Panels
FEATURES
1
2 6 V to 14 V Input Voltage Range
Vs Output Voltage Range up to 19 V
Boost Converter With 3.5-A Switch Current
Boost Converter Overvoltage Protection
2.5-A Step-Down Converter With 3.3-V Fixed or
Adjustable Output
750 kHz Fixed Switching Frequency
150 mA Negative Charge Pump Driver for VGL
50 mA Positive Charge Pump for VGH
LDO Controller for Logic Supply
Gate Voltage Shaping for VGH
Temperature Sensor Output
TPS65167 - High Voltage Stress Test Vs
and VGH
TPS65167A - High Voltage Stress Test Vs only
Adjustable Sequencing
Gate Drive Signal for Isolation Switch
Short-Circuit Protection
Internal Soft-start
Thermal Shutdown
Available in 6 × 6 mm 40 Pin QFN Package
TPS65167
12 V
Boost Converter
High-Voltage Stress Test
Vs
15 V/1.7 A
Positive Charge Pump
Gate Voltage Shaping
VGH
30 V/50 mA
APPLICATIONS
LCD TV Panel
LCD Monitor
DESCRIPTION
The TPS65167 offers a compact power supply
solution to provide all voltages required by a LCD
panel for large size monitor and TV panel
applications running from a 12-V supply rail.
The device generates all 3 voltage rails for the TFT
LCD bias (Vs, VGL and VGH). In addition to that it
includes a step-down converter and a LDO controller
to provide two logic voltage rails. The device
incorporates a high voltage switch that can be
controlled by a logic signal from the external timing
controller (TCON). This function allows gate voltage
shaping for VGH. The device also features a high
voltage stress test where the output voltage of VGH
is set to typically 30 V and the output voltage of Vs is
programmable to any higher voltage. The high
voltage stress test is enabled by pulling the HVS pin
high. The device consists of a boost converter to
provide the source voltage Vs operating at a fixed
switching frequency of 750 kHz. A fully integrated
positive charge pump, switching automatically
between doubler and tripler mode provides an
adjustable regulated TFT gate on voltage VGH. A
negative charge pump driver provides adjustable
regulated output voltages VGL. To minimize external
components the charge pumps for VGH and VGL
operate at a fixed switching frequency of 1.5 MHz.
The device includes safety features like overvoltage
protection of the boost converter, short-circuit
protection of VGH and VGL as well as thermal
shutdown.
Negative Charge Pump
Temperature Sensor
Buck Converter
LDO Controller
VGL
–5 V/150 mA
Vtemp
Vlogic
3.3 V/2.5 A
Vaux
1.8 V/500 mA
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.
PowerPAD is a trademark of Texas Instruments.
2
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 © 2007–2008, Texas Instruments Incorporated




etcTI

TPS65167 Datasheet Preview

TPS65167 Datasheet

Compact LCD Bias Supply

No Preview Available !

TPS65167
TPS65167A
SLVS760C – APRIL 2007 – REVISED MARCH 2008
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
TA
–40°C to 85°C
ORDERING INFORMATION(1)
High voltage Stress Test
(HVS)
ORDERING
PACKAGE (2)
Available on Vs and VGH
Available on Vs only
TPS65167RHAR
TPS65167ARHA
R
40 pin QFN
PACKAGE
MARKING
TPS65167
TPS65167A
(1) The RHA package is available taped and reeled. Add R suffix to the device type (TPS65167RHAR) to
order the device taped and reeled. The RHA package has quantities of 3000 devices per reel.
(2) For the most current package and ordering information, see the Package Option Addendum at the end
of this document, or see the TI website at www.ti.com.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)(1)
AVIN, VINB, SUPN, GD, BASE (2)
EN, HVS, CTRL(2)
FB, FBB, FBP, FBN, FBLDO, RSET(2)
VI Voltage on pin SW, SUP(2)
SWB(2)
POUT, VGH, DRN(2)
TJ Continuous power dissipation
Tstg Operating junction temperature range
Storage temperature range
VALUE
–0.3 to 16.5
–0.3 to 6
–0.3 to 6
25
20
36
See Dissipation Rating Table
–40 to 150
–65 to 150
UNIT
V
V
V
V
V
V
°C
°C
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltage values are with respect to network ground terminal.
DISSIPATION RATINGS(1)
PACKAGE
40 pin QFN
RθJA
30°C/W
TA 25°C
POWER RATING
3.3 W
TA = 70°C
POWER RATING
1.8 W
TA = 85°C
POWER RATING
1.3 W
(1) See the Texas Instruments Application report SLMA002 regarding thermal characteristics of the PowerPAD package.
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
VI
TA
TJ
CREG
CREF
Input voltage range
Operating ambient temperature
Operating junction temperature
REGOUT bypass capacitor
Reference (REF) bypass capacitor
MIN
NOM
MAX
UNIT
6 14 V
–40 85 °C
–40 125 °C
4.7 µF
100 nF
2 Submit Documentation Feedback
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS65167 TPS65167A


Part Number TPS65167
Description Compact LCD Bias Supply
Maker etcTI
Total Page 30 Pages
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