Related Manuals for Texas Instruments UCC28810EVM-002
Summary of Contents for Texas Instruments UCC28810EVM-002
- Page 1 Using the UCC28810EVM-002 User's Guide Literature Number: SLUU355A March 2009 – Revised June 2009...
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Page 2: Typical Applications
Lighting Applications Introduction The UCC28810EVM-002 is a constant current non-isolated power supply for LED lighting applications. It will convert universal mains (90 VRMS to 264 VRMS) to a 0.9-A constant current into a 100-W load. This evaluation module will allow the customer evaluate the UCC28810/11 in a typical LED lighting application. -
Page 3: Electrical Performance Specifications
Electrical Performance Specifications www.ti.com Electrical Performance Specifications Table 1. UCC28810EVM-002 Electrical Performance Specifications SYMBOL PARAMETER CONDITIONS UNITS INPUT CHARACTERSTICS Input voltage Input current 0.175 Power factor = 80 W to 100 W 0.95 0.97 OUTPUT CHARACTERSTICS PFC Stage PFC output voltage... - Page 4 Schematic www.ti.com Schematic Figure 1. UCC28810EVM-002 PFC Stage Schematic A 0.9-A Constant Current Supply with PFC for 100-W LED Lighting Applications SLUU355A – March 2009 – Revised June 2009 Submit Documentation Feedback...
- Page 5 Schematic www.ti.com Figure 2. UCC28810EVM-002 Buck Stage Schematic SLUU355A – March 2009 – Revised June 2009 A 0.9-A Constant Current Supply with PFC for 100-W LED Lighting Applications Submit Documentation Feedback...
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Page 6: Test Setup
Test Setup www.ti.com Test Setup WARNING High voltages, that may cause injury, exist on this evaluation module (EVM). Please ensure all safety procedures are followed when working on this EVM. Never leave a powered EVM unattended. The use of isolated test equipment is highly recommended. -
Page 7: Recommended Test Setup
On Board Dimming Pin 2: GND Pin 3 External PWM dimming input Figure 3. UCC28810EVM-002 Recommended Test Set Up Note: The 1000-µF/250-V capacitor on the output is not required if the load is a string of HB-LED’s. List of Test Points Table 2. -
Page 8: Test Procedure
Test Procedure www.ti.com Test Procedure All tests will use the set up described in Section 5 of this user guide. Ensure potentiometer R26 is rotated completely clockwise. WARNING HIGH VOLTAGE levels are present on this evaluation module whenever it is energized. Proper precautions must be observed whenever working with this module. - Page 9 Test Procedure www.ti.com Buck Disable 1. Ensure the AC source is off. 2. Connect a DC source to J4, pins 1 and 2. 3. Set DC source to 0 V. 4. Apply power to the EVM per Section 6.1. 5. Increase DC source to 3.3 V. This input can accept up to 12 V. 6.
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Page 10: Total Harmonic Distortion
Performance Data and Typical Characteristic Curves www.ti.com Performance Data and Typical Characteristic Curves Figure 4 through Figure 8 present some typical performance curves for the UCC28810EVM-002 with 30 Cree XRE LED’s at 900 mA. EFFICIENCY/POWER FACTOR TOTAL HARMONIC DISTORTION LINE VOLTAGE LINE VOLTAGE 1.00... -
Page 11: Input Current
Performance Data and Typical Characteristic Curves www.ti.com Input Current TRANSITION MODE BUCK PWM AND LINE INPUT CURRENT (Ch1 and Ch4 share GND reference) Ch1: Buck V Ch3: AC Input Current Ch4: LED V Ch2: Buck V Figure 8. SLUU355A – March 2009 – Revised June 2009 A 0.9-A Constant Current Supply with PFC for 100-W LED Lighting Applications Submit Documentation Feedback... -
Page 12: Evm Assembly Drawing And Pcb Layout
EVM Assembly Drawing and PCB layout Figure 9 through Figure 11 show the design of the UCC28810EVM-002 printed circuit board. Figure 9. UCC28810EVM-002 Top Layer Assembly Drawing (top view) Figure 10. UCC28810EVM-002 Top Copper (top view) Figure 11. UCC28810EVM-002 Bottom Layer (viewed through top layer) A 0.9-A Constant Current Supply with PFC for 100-W LED Lighting Applications... -
Page 13: List Of Materials
List of Materials www.ti.com List of Materials The EVM components list according to the schematic shown in Figure 1 Figure Table 3. List of Materials REF DES DESCRIPTION PART NUMBER Capacitor, ceramic, 10 µF, 25 V, X5R, 20%, 1206 Capacitor, metallized polyester film, 0.1 µF, 275 VAC, C2, C5 10%, X2, 17.5 mm x 5.5 mm C3, C4... - Page 14 List of Materials www.ti.com Table 3. List of Materials (continued) REF DES DESCRIPTION PART NUMBER Fuse, SMP, 1.25 A SMP 1.25 Fuse 250 V UL fast 5 X 20 MM Fuse clip, 5 x 20 mm, PC mount Wickmann 01000056H HS1, HS2 Heatsink, TO-220, vertical mount, 15°C/W Aavid 593002...
- Page 15 List of Materials www.ti.com Table 3. List of Materials (continued) REF DES DESCRIPTION PART NUMBER R31, R32, Resistor, chip, 15.0 kΩ, 1/8 W, 1%, 0805 Resistor, chip, 560 Ω, 1/8 W, 1%, 0805 Resistor, chip, 0.47 Ω, 1 W, 1%, 2512 Resistor, chip, 4.75 kΩ, 1/4 W, 1%, 1206 Resistor, chip, 221 kΩ, 1/8 W, 1%, 0805 R47, R48...
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Page 16: Evaluation Board/Kit Important Notice
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 17: Important Notice
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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