Texas Instruments UCC28060EVM User Manual Download Page 14

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 85V

RMS

to 265V

RMS

and the output voltage range of 375V to 450V.

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 +100

°

C. The EVM is designed to operate

properly with certain components above +100

°

C 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 UCC28060EVM

Page 1: ...ave boost phases This user s guide provides the schematic List of Materials list assembly drawing for a single sided printed circuit board application and test set up information necessary to evaluate...

Page 2: ...e List of Materials for specific values To evaluate inductor ripple currents Jumpers JP8 and JP9 can be removed and replaced with current loops Figure 1 Interleaved PFC Power Stage 2 UCC28060EVM 300 W...

Page 3: ...www ti com Schematics Figure 2 Controller Circuitry SLUU280B May 2007 Revised July 2008 UCC28060EVM 300 W Interleaved PFC Pre Regulator 3 Submit Documentation Feedback...

Page 4: ...output before supplying power to the EVM A separate 13 V bias supply is required to power the UCC28060 control circuitry The unit will start up under no load conditions However for safety a load shoul...

Page 5: ...e data for the UCC28060EVM Figure 4 Efficiency at 85VRMS and 265VRMS The UCC28060 control device has phase management capability to improve light load efficiency To demonstrate the light load efficien...

Page 6: ...nt 1 40706 1 17256 0 93805 0 70354 0 46904 0 23453 0 00002 Amplitude A 0 6 12 18 24 30 36 42 48 Harmonic No V 230V IN RMS Typical Performance Data www ti com Figure 6 Efficiency at 230 VRMS With and W...

Page 7: ...e Current IL1 IL2 versus rectified line voltage From these graphs it can be observed that interleaving reduces the magnitude of input ripple current caused by the inductor ripple current Figure 9 Indu...

Page 8: ...RMS Input at Peak Line Voltage at 265 VRMS Input at Half Peak Line Voltage Figure 13 Inductor and Input Ripple Current Figure 14 Inductor and Input Ripple Current at VIN 85 VRMS POUT 300 W at VIN 265...

Page 9: ...hat the RMS input voltage is too low This EVM was designed to go into a brownout state when the line drops below 64 VRMS Once the UCC28060 control device has determined that the input is in a brownout...

Page 10: ...S to 115 VRMS to 230 VRMS and the transient response was evaluated in each case From the oscilloscope image in Figure 19 it can be observed that the output recovered from line transients within 300ms...

Page 11: ...s respectively of the UCC28060EVM Note Board layouts are not to scale These figures are intended to show how the board is laid out they are not intended to be used for manufacturing UCC28060EVM PCBs F...

Page 12: ...itor Ceramic 25V X7R 10 0805 Std Std 2 C2 C3 100 F Capacitor Aluminum 450VDC 20 18mm 40 mm EKXG451ELL101 Nippon MM40S Chemi con 1 C4 0 1 F Capacitor Film 275VAC 20 0 689in 0 236in ECQU2A104BC1 Panason...

Page 13: ...1 R17 0 00 Resistor Chip 1 10W 1 0805 Std Std 1 R18 6 19k Resistor Chip 1 10W 1 0805 Std Std 1 R19 30 1k Resistor Chip 1 10W 1 0805 Std Std 3 R2 R4 R21 10 0k Resistor Chip 1 10W 1 0805 Std Std 1 R25 1...

Page 14: ...t 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 o...

Page 15: ...siness practice 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 wo...

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