LCD Bias Power Reference Design
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Description
This reference design delivers a low cost LCD bias power circuit using the boost converter IC TPS61085. The solution provides all four voltages required by the thin film transistor (TFT) LCD display. The TPS61085 boost converter generates the AVDD voltage. Two external charge pump circuits provide the positive VGH and negative VGL bias voltage for the TFT. One external op-amp LM7321MF acts as a high current buffer; it provides the VCOM voltage for the TFT backplane.
Features
- Discrete solution for LCD bias power
- Low cost and small size
- A high current buffer is also provided
- This circuit has been tested on a reference design board
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Schematic/Block Diagram
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Test Data
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TI Devices (2)
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CAD/CAE symbols
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Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.
Step 1: Download and install the free download.
Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
Step 3: Open the .bxl file with the Ultra Librarian software.
You can always access the complete CAD/CAE Symbols database at http://webench.ti.com/cad/
Both PCB footprints and schematic symbols are available for download in a vendor neutral format, which can then be exported to the leading EDA CAD/CAE design tools using the Ultra Librarian Reader. The reader is available as a (free download.).
The UL Reader is a subset of the Ultra Librarian toolset that can generate, import, and export components and their attributes in virtually any EDA CAD/CAE format.
Technical Documents
View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.
User guides (1)
| Title | Abstract | Type | Size (KB) | Date |
| | | PDF | 751 |
10 Dec 2014
|
Design files (6)
| | | ZIP | 624 |
13 Jan 2015
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| | | ZIP | 94140 |
13 Jan 2015
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| | | PDF | 521 |
13 Jan 2015
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| | | PDF | 92 |
13 Jan 2015
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| | | PDF | 120 |
13 Jan 2015
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| | | PDF | 27 |
13 Jan 2015
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