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This user's guide describes the characteristics, setup, and use of the TLC5944EVM-358 Evaluation
Module (EVM). This EVM helps the user evaluate the features of the Texas Instruments TLC5944, which
is a 16-channel, constant-current LED driver. This user's guide includes setup instructions, a schematic
diagram, a bill of materials, printed-circuit board layout drawings, and software instructions.
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Schematics
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SLVU306 - April 2009
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List of Tables
User's Guide
SLVU306 - April 2009
TLC5944EVM-358
TLC5944EVM-358
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Summary of Contents for Texas Instruments TLC5944EVM-358
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Page 1: Table Of Contents
This user’s guide describes the characteristics, setup, and use of the TLC5944EVM-358 Evaluation Module (EVM). This EVM helps the user evaluate the features of the Texas Instruments TLC5944, which is a 16-channel, constant-current LED driver. This user’s guide includes setup instructions, a schematic diagram, a bill of materials, printed-circuit board layout drawings, and software instructions. -
Page 2: Introduction
1.1.1 Software Texas Instruments provides a compact disk (CD) in the EVM kit that contains the software necessary to evaluate the TLC5944EVM. Check the TLC5944 product folder on the TI Web site (www.ti.com) for updates to the software. -
Page 3: Related Documentation From Texas Instruments
ROW_CTRL_0, from the Driver board connects power to Row A when high and connects power to Row B when low. The orderable Texas Instruments part number for this PCB is LEDEVM-357. DSP Board: The DSP board contains a TMS320F2808 ('F2808) microcontroller that programs and controls the three TLC5944 ICs on the Driver board. -
Page 4: Input/Output Connector Descriptions
J6 (Vin). The outer pin on the connector is connected directly to J8 (GND). When using an ac-to-dc plug-in adapter, ensure that the plug-in adapter’s output voltage is stable and does not drop below 5 V when loaded. TLC5944EVM-358 SLVU306 – April 2009 Submit Documentation Feedback... - Page 5 OUT15 pin from the blue LED. 2.1.16 JP5 – SCL This jumper is used to program the EEPROM, U1, at assembly. This jumper must be shorted to connect the TUSB3410 to the EEPROM for normal operation. SLVU306 – April 2009 TLC5944EVM-358 Submit Documentation Feedback...
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Page 6: Software Setup
Hot plugging the input supply with long leads can generate transients on the input supply bus that exceed the maximum ratings of the EVM. The input supply must be connected before it is turned on. TLC5944EVM-358 SLVU306 – April 2009 Submit Documentation Feedback... -
Page 7: Operation
GUI and the EVM, the user can use the graphical interface to program the LEDs. If the EVM is properly connected, the software screen looks like Figure 2 when first opened. Figure 2. TLC5944EVM Software Start-Up Screen Software Features SLVU306 – April 2009 TLC5944EVM-358 Submit Documentation Feedback... - Page 8 When not checked, the EVM does not supply power to the TLC5944 VUP pins. This allows the LEDs to show ghosting in the ghosting demo. When checked, the EVM applies power to the TLC5944 VUP pins which enables the Pre-Charge FETs to eliminate the visible ghosting. TLC5944EVM-358 SLVU306 – April 2009 Submit Documentation Feedback...
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Page 9: Tlc5944Evm Software With Ghosting Demo Enabled
0 and 4095 with the Intensity field in the Row B window. WARNING When using the Ghosting Demo, the input voltage must be less than 10 V. SLVU306 – April 2009 TLC5944EVM-358 Submit Documentation Feedback... -
Page 10: Information Bar
Clicking on this function provides step-by-step directions on how to update the EVM’s DSP firmware. 3.2.12 Information Bar – EVM Status The information bar displays whether or not the GUI detects the EVM hardware. Figure 4. Information Bar TLC5944EVM-358 SLVU306 – April 2009 Submit Documentation Feedback... -
Page 11: Hardware Features
PCB traces and the external drive circuitry. Excessive ringing caused by impedance mismatch can be interpreted as low-to-high logic level changes, causing erratic EVM behavior. SLVU306 – April 2009 TLC5944EVM-358 Submit Documentation Feedback... -
Page 12: Schematics, Board Layouts, And Bill Of Materials
Schematics, Board Layouts, and Bill of Materials www.ti.com Schematics, Board Layouts, and Bill of Materials Schematics Figure 5 through Figure 11 provides the schematics for the TLC5944EVM-358 and the LEDEVM-249. Figure 5. HPA357A - Schematic 1 TLC5944EVM-358 SLVU306 – April 2009 Submit Documentation Feedback... -
Page 13: Hpa357A - Schematic
Schematics, Board Layouts, and Bill of Materials www.ti.com Figure 6. HPA357A - Schematic 2 SLVU306 – April 2009 TLC5944EVM-358 Submit Documentation Feedback... -
Page 14: Hpa358A Schematic
Schematics, Board Layouts, and Bill of Materials www.ti.com Figure 7. HPA358A Schematic 1 TLC5944EVM-358 SLVU306 – April 2009 Submit Documentation Feedback... -
Page 15: Hpa358A Schematic
Schematics, Board Layouts, and Bill of Materials www.ti.com Figure 8. HPA358A Schematic 2 SLVU306 – April 2009 TLC5944EVM-358 Submit Documentation Feedback... -
Page 16: Hpa358A Schematic
Schematics, Board Layouts, and Bill of Materials www.ti.com Figure 9. HPA358A Schematic 3 TLC5944EVM-358 SLVU306 – April 2009 Submit Documentation Feedback... -
Page 17: Hpa358A Schematic
Schematics, Board Layouts, and Bill of Materials www.ti.com Figure 10. HPA358A Schematic 4 SLVU306 – April 2009 TLC5944EVM-358 Submit Documentation Feedback... -
Page 18: Hpa358A Schematic
Schematics, Board Layouts, and Bill of Materials www.ti.com Figure 11. HPA358A Schematic 5 TLC5944EVM-358 SLVU306 – April 2009 Submit Documentation Feedback... -
Page 19: Board Layouts
Schematics, Board Layouts, and Bill of Materials www.ti.com Board Layouts This section provides the TLC5944EVM-358 and LEDEVM-357 board layouts and illustrations. Figure 12 through Figure 16 show the board layout for the LED driver board, HPA357. Figure 12. HPA357A Assembly Layer Routing SLVU306 –... -
Page 20: Hpa357A Top Layer Routing
Schematics, Board Layouts, and Bill of Materials www.ti.com Figure 13. HPA357A Top Layer Routing TLC5944EVM-358 SLVU306 – April 2009 Submit Documentation Feedback... -
Page 21: Hpa357A Layer 2 Routing
Schematics, Board Layouts, and Bill of Materials www.ti.com Figure 14. HPA357A Layer 2 Routing SLVU306 – April 2009 TLC5944EVM-358 Submit Documentation Feedback... -
Page 22: Hpa357A Layer 3 Routing
Schematics, Board Layouts, and Bill of Materials www.ti.com Figure 15. HPA357A Layer 3 Routing TLC5944EVM-358 SLVU306 – April 2009 Submit Documentation Feedback... -
Page 23: Hpa357A Bottom Layer Routing
Schematics, Board Layouts, and Bill of Materials www.ti.com Figure 16. HPA357A Bottom Layer Routing Figure 17 through Figure 19 show the board layout for the LED board, HPA358. SLVU306 – April 2009 TLC5944EVM-358 Submit Documentation Feedback... -
Page 24: Hpa358A Assembly Layer
Schematics, Board Layouts, and Bill of Materials www.ti.com Figure 17. HPA358A Assembly Layer TLC5944EVM-358 SLVU306 – April 2009 Submit Documentation Feedback... -
Page 25: Hpa358A Top Layer
Schematics, Board Layouts, and Bill of Materials www.ti.com Figure 18. HPA358A Top Layer SLVU306 – April 2009 TLC5944EVM-358 Submit Documentation Feedback... -
Page 26: Hpa358A Layer
Schematics, Board Layouts, and Bill of Materials www.ti.com Figure 19. HPA358A Layer 2 TLC5944EVM-358 SLVU306 – April 2009 Submit Documentation Feedback... -
Page 27: Hpa358A Layer
Schematics, Board Layouts, and Bill of Materials www.ti.com Figure 20. HPA358A Layer 3 SLVU306 – April 2009 TLC5944EVM-358 Submit Documentation Feedback... -
Page 28: Bill Of Materials
Header, female, 2x15-pin, .100 inch, 0.500 X 1.520 inch PPTC152LJBN-RC Sullins Q1, Q4 SI2303CDS MOSFET, Pch, -30V, 1.64A, 190mΩ SOT23 SI2303CDS Vishay Q3, Q6 Si2302CDS MOSFET, Nch, 20V, 2.6A, 57mΩ SOT23 Si2302CDS Vishay TLC5944EVM-358 SLVU306 – April 2009 Submit Documentation Feedback... - Page 29 Header, 3-pin, 100mil spacing, (36-pin strip) PTC36SAAN Sullins 0.100 inch × 2 JP2 - JP6 PTC36SAAN Header, 2-pin, 100mil spacing, (36-pin strip) PTC36SAAN Sullins 0.153 × 0.153 inch 2.2µH Inductor, SMT, 2.7A, 70 mΩ LPS4018-222ML Coilcraft SLVU306 – April 2009 TLC5944EVM-358 Submit Documentation Feedback...
- Page 30 TLC5944PWP with 6bits Dot Correction ABLS-12.000Mhz-B2-T Crystal, Controlled Oscillators 0.150 x 0.528 inch ABLS-12.000Mhz-B2- ABRACON Shunt, 100-mil, Black 0.100 929950-00 4.65 x 4.75 × 0.062" HPA358 2566 Bumper, rubber 2566 SPC Tech TLC5944EVM-358 SLVU306 – April 2009 Submit Documentation Feedback...
- Page 31 5. Install rubber feet at bottom corners of assembled PCB after final wash. 6. DSP Control card will be supplied by TI. 7. U1 will be programmed after assembly. See test procedure for programming instructions. SLVU306 – April 2009 TLC5944EVM-358 Submit Documentation Feedback...
- Page 32 EVALUATION BOARD/KIT IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards.
- Page 33 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.
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