background image

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. As such, the goods being provided are not intended to be complete
in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety and environmental
measures typically found in end products that incorporate such semiconductor components or circuit boards. This evaluation board/kit does
not fall within the scope of the European Union directives regarding electromagnetic compatibility, restricted substances (RoHS), recycling
(WEEE), FCC, CE or UL, and therefore may not meet the technical requirements of these directives or other related directives.

Should this evaluation board/kit not meet the specifications indicated in the User’s Guide, the board/kit may be returned within 30 days from
the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY SELLER TO BUYER
AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF
MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE.

The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all claims
arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all
appropriate precautions with regard to electrostatic discharge.

EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY
INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.

TI currently deals with a variety of customers for products, and therefore our arrangement with the user

is not exclusive.

TI assumes

no liability for applications assistance, customer product design, software performance, or infringement of patents or

services described herein.

Please read the User’s Guide and, specifically, the Warnings and Restrictions notice in the User’s Guide prior to handling the product. This
notice contains important safety information about temperatures and voltages. For additional information on TI’s environmental and/or
safety programs, please contact the TI application engineer or visit

www.ti.com/esh

.

No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine, process, or
combination in which such TI products or services might be or are used.

FCC Warning

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. It generates, uses, and can radiate radio

frequency energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC rules, which are
designed to provide reasonable protection against radio frequency interference. Operation of this equipment in other environments may
cause interference with radio communications, in which case the user at his own expense will be required to take whatever measures may
be required to correct this interference.

EVM WARNINGS AND RESTRICTIONS

It is important to operate this EVM within the input voltage range of 90 VRMS to 264 VRMS and the output voltage range of 55 VRMS to
110 VRMS.

Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are questions
concerning the input range, please contact a TI field representative prior to connecting the input power.

Applying loads outside of the specified output range may result in unintended operation and/or possible permanent damage to the EVM.
Please consult the EVM User's Guide prior to connecting any load to the EVM output. If there is uncertainty as to the load specification,
please contact a TI field representative.

During normal operation, some circuit components may have case temperatures greater than 60

°

C. The EVM is designed to operate

properly with certain components above as long as the input and output ranges are maintained. These components include but are not
limited to linear regulators, switching transistors, pass transistors, and current sense resistors. These types of devices can be identified
using the EVM schematic located in the EVM User's Guide. When placing measurement probes near these devices during operation,
please be aware that these devices may be very warm to the touch.

Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265

Copyright 2008, Texas Instruments Incorporated

Summary of Contents for UCC28810EVM-002

Page 1: ...Using the UCC28810EVM 002 User s Guide Literature Number SLUU355A March 2009 Revised June 2009...

Page 2: ...voltage The second configuration requires removing some components and changing a resistor value see below for more details This second configuration removes the tracking element of the PFC circuit T...

Page 3: ...CHARACTERSTICS PFC Stage VOUT PFC output voltage 235 415 VDC LED Driver Stage POUT Output power 45 80 100 W IOUT Output current 0 84 0 9 0 96 A Line regulation 0 03 Frequency 60 128 kHz SYSTEMS CHARA...

Page 4: ...Schematic www ti com Figure 1 UCC28810EVM 002 PFC Stage Schematic 4 A 0 9 A Constant Current Supply with PFC for 100 W LED Lighting Applications SLUU355A March 2009 Revised June 2009 Submit Documentat...

Page 5: ...GND GDRV VDD www ti com Schematic 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 5 Su...

Page 6: ...at 0 9 A The HB LED s should be connected in series Their voltage drop should be between 55 VDC and 110 VDC Alternatively a constant voltage electronic load could be used If using a constant voltage...

Page 7: ...D s Table 2 Test Point Functions TEST POINTS NAME DESCRIPTION TP1 Loop injection point TP2 Loop injection point PFC output TP3 VCC_BK Buck bias voltage output TP4 PFC PFC output voltage TP5 PFC PFC ou...

Page 8: ...acitor is not required on the output if using a HB LED string 5 Set AC source to 90 VRMS 6 Turn on AC source 7 Monitor PFC output voltage at TP4 and TP5 V2 8 Monitor output current at A1 9 Monitor out...

Page 9: ...rator a pulse from 0 V to 3 3 V at 200 Hz with variable duty cycle Note when the PWM signal is high the LED light is reduced 100 duty cycle will turn LED off 5 Apply power to the EVM per Section 6 1 6...

Page 10: ...oltage 0 5 A div Ch3 LED Current Ch1 Buck VIN TRANSITION MODE BUCK PWM RESPONSE Ch1 and Ch 4 share GND reference Ch2 Buck VDS Ch4 LED Voltage 0 5 A div Ch3 LED Current Ch1 Buck VIN TRANSITION MODE BUC...

Page 11: ...MODE BUCK PWM AND LINE INPUT CURRENT Ch1 and Ch4 share GND reference www ti com Performance Data and Typical Characteristic Curves Figure 8 SLUU355A March 2009 Revised June 2009 A 0 9 A Constant Curr...

Page 12: ...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...

Page 13: ...F 25 V X7R 10 1210 Std Std 2 C19 C22 Capacitor ceramic 10 nF 50 V X7R 10 0805 Std Std 1 C24 Capacitor ceramic 100 pF 200 V NPO 5 0805 Std Std 1 C26 Capacitor ceramic 47 pF 50 V NPO 5 0805 Std Std 1 C...

Page 14: ...istor chip 301 k 1 4 W 1 1206 Std Std 2 R2 R5 Resistor chip 1 00 M 1 4 W 1 1206 Std Std 1 R4 Resistor chip 4 02 k 1 8 W 1 0805 Std Std 1 R6 Resistor chip 6 19 k 1 8 W 1 0805 Std Std 2 R7 R28 Resistor...

Page 15: ...21 k 1 4 W 1 1206 Std Std 1 U1 LED Lighting Power Controller TI UCC28810D 1 U2 Timer Low Power CMOS TI TLC555D 1 U3 LED Lighting Power Controller TI UCC28811D 1 PCB 10 4 in x 2 in x 0 062 in Any HPA43...

Page 16: ...This notice contains important safety information about temperatures and voltages For additional information on TI s environmental and or safety programs please contact the TI application engineer or...

Page 17: ...ce TI is not responsible or liable for any such statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product would reasonabl...

Reviews: