This reference design details a display power circuit which generates a bipolar voltage rail for source drivers and additional supplies for gate drivers. Charge pumps are used to generate the voltage supply for gate drivers, which makes this design easy to implement. By using only one dc-dc converter to generate four voltage rails and therefore minimizing the amount of inductances, this circuit allows small design size.
| Output voltage options | PMP9780.0 | PMP9780.1 | PMP9780.2 | PMP9780.3 |
|---|---|---|---|---|
| Vin (Min) (V) | 3.3 | 3.3 | 6.3 | 6.3 |
| Vin (Max) (V) | 3.6 | 3.6 | 6.6 | 6.6 |
| Vout (Nom) (V) | 6.3 | -6.3 | 15 | -10 |
| Iout (Max) (A) | .1 | .1 | .02 | .02 |
| Output Power (W) | .63 | .63 | .3 | .2 |
| Isolated/Non-Isolated | Non-Isolated | Non-Isolated | Non-Isolated | Non-Isolated |
| Input Type | DC | DC | DC | DC |
| Topology | Boost- Non Sync | Buck Boost- Inverting | Linear Regulator | Linear Regulator |
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Download ready-to-use system files to speed your design process.
Test results for the reference design, including efficiency graphs, test prerequisites and more
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Design file that contains information on physical board layer of design PCB
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| White paper | Powering automotive displays to create interactive driving experiences | Dec. 21, 2017 | ||
| Technical article | Split-rail converters reduce BOM size and cost in new automotive displays | PDF | HTML | Jul. 01, 2015 | |
| Test report | Bipolar TFT LCD Supply Using TPS65131-Q1 and Charge Pumps Design Guide | May 07, 2015 |
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