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TPS65166RHAR PDF预览

TPS65166RHAR

更新时间: 2024-11-16 07:04:51
品牌 Logo 应用领域
德州仪器 - TI 电视
页数 文件大小 规格书
45页 3820K
描述
Compact LCD Bias Supply for TFT-LCD TV Panels

TPS65166RHAR 数据手册

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TPS65166  
www.ti.com.......................................................................................................................................................................................... SLVS976SEPTEMBER 2009  
Compact LCD Bias Supply for TFT-LCD TV Panels  
1
FEATURES  
APPLICATIONS  
LCD TV Panel with ASG Technology  
2
8.5V to 14.7V Input Voltage Range  
VS Output Voltage Range up to 19V  
Boost Converter with 4.2A Switch Current  
DESCRIPTION  
The TPS65166 offers a compact power supply  
solution to provide all voltages required by a LCD  
panel for large TV panel applications running from a  
12V supply rail. The device is optimized to support  
LCD technology using ASG gate drive circuits.  
Step Down Converter with 2.6A Switch Current  
and Adjustable Output 2.5V to 3.3V  
750kHz Fixed Switching Frequency  
Temperature Compensated Negative Supply  
High Voltage Stress Test (HVS)  
Adjustable Sequencing  
The device generates all voltage rails for the TFT  
LCD bias (VS, VONE, VOFFE, VSS). In addition to that it  
includes a step-down converter (Vlogic) to provide the  
logic voltage. By pulling the HVS pin high an  
implemented high voltage stress test feature  
programs the boost converter output voltage Vs to  
higher values. The boost converter operates at a  
fixed switching frequency of 750kHz. The positive  
charge pump is running from the boost converter and  
is regulated by an external transistor. A buck-boost  
converter provides an adjustable temperature  
Gate Drive Signal for Isolation Switch  
Short Circuit Protection  
Internal Soft-Start  
180° Phase Shift Between Buck and Boost  
P2P Short/Open Certified  
Optimized Dual Layer PCB Layout  
Low EMI  
dependent negative output voltage VOFFE  
negative output voltage VSS is regulated by a shunt  
regulator.  
. The  
Undervoltage Lockout  
Thermal Shutdown  
Available in 6×6mm 40 Pin QFN Package  
Safety features like overvoltage protection of the  
buck-boost input voltage, the boost and buck output  
voltage, undervoltage lockout, short circuit protection  
of VONE, VOFFE, and Vlogic are included as well as  
thermal shutdown.  
TYPICAL APPLICATION  
V
V
in  
s
Boost  
Converter  
With HVS  
12V  
15V / 2.9A  
V
logic  
Buck  
Converter  
3.3V / 2.4A  
V
Positive  
Charge  
Pump  
ONE  
28V / 150mA  
Inverting Buck Boost  
With  
Temperature  
Compensation  
V
OFFE  
-22 to -11V / 200mA  
V
ss  
Negative Shunt  
Regulator  
-7.5V / 100mA  
Sequencing  
And Logic  
Power Good  
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.  
2
PowerPAD is a trademark of Texas Instruments.  
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  

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适用于电视的高分辨率完全可编程 LCD 偏置 IC