Texas Instruments TPS61042EVM-226 Скачать руководство пользователя страница 3

EVM IMPORTANT NOTICE

Texas Instruments (TI) provides the enclosed product(s) under the following conditions:

This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION
PURPOSES ONLY
 and is not considered by TI to be fit for commercial use. As such, the goods being provided
may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective
considerations, including product safety measures typically found in the end product incorporating the goods.
As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic
compatibility and therefore may not meet the technical requirements of the directive.

Should this evaluation kit not meet the specifications indicated in the EVM User’s Guide, the 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. Please be aware that the products
received may not be regulatory compliant or agency certified  (FCC, UL, CE, etc.). 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 EVM User’s Guide and, specifically, the EVM Warnings and Restrictions notice in the EVM
User’s Guide prior to handling the product. This notice contains important safety information about temperatures
and voltages. For further safety concerns, please contact the TI application engineer.

Persons handling the product must have electronics training and observe good laboratory practice standards.

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.

Mailing Address:

Texas Instruments
Post Office Box 655303
Dallas, Texas 75265

Copyright 

 2002, Texas Instruments Incorporated

Содержание TPS61042EVM-226

Страница 1: ...September 2002 PMP EVMs User s Guide TPS61042EVM 226 PCB 24...

Страница 2: ...t that any license either express or implied is granted under any TI patent right copyright mask work right or other TI intellectual property right relating to any combination machine or process in wh...

Страница 3: ...handling or use of the goods Please be aware that the products received may not be regulatory compliant or agency certified FCC UL CE etc Due to the open construction of the product it is the user s r...

Страница 4: ...inty 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 p...

Страница 5: ...oard Layout Chapter 4 Schematic and Bill of Materials Related Documentation From Texas Instruments TPS61042 data sheet SLVS439 If You Need Assistance Contact your local TI sales representative FCC War...

Страница 6: ......

Страница 7: ...2 2 2 Analog Dimming With PWM Voltage 2 3 2 2 3 PWM Dimming Using CTRL 2 4 2 3 Setup 2 4 3 Board Layout 3 1 3 1 Layout 3 2 4 Schematic and Bill of Materials 4 1 4 1 Schematic 4 2 4 2 Bill of Material...

Страница 8: ...Contents...

Страница 9: ...This chapter contains background information for the TPS61042 and support documentation for the TPS61042EVM 226 evaluation module Topic Page 1 1 Background 1 2 Chapter 1...

Страница 10: ...EDs It may also be modified to deliver a higher or lower output current to the LEDs Refer to the data sheet for more information on adjusting the rated output current The EVM includes a CTRL pin and a...

Страница 11: ...This chapter describes how to properly connect set up and use the TPS61042EVM 226 Topic Page 2 1 Input Output Connections 2 2 2 2 EVM Operation 2 2 2 3 Setup 2 4 Chapter 2...

Страница 12: ...device The TPS61042 has built in overvoltage protection to keep the EVM from being damaged under a no load condition This EVM is designed to accommodate several LED dimming techniques Because of this...

Страница 13: ...e amount of allowable ripple on the converted analog signal The converted analog voltage is then injected into the FB pin of the TPS61042 as in the Analog Dimming with Analog Voltage method described...

Страница 14: ...x is the maximum desired output current The reference designators correspond to the EVM schematic shown in Chapter 4 R1 V ref Io_max For an output current of 20 mA R1 12 5 2 3 Setup After the EVM has...

Страница 15: ...This chapter provides the TPS61042EVM 226 board layout and illustrations Topic Page 3 1 Layout 3 2 Chapter 3...

Страница 16: ...the TPS61042EVM 226 PWB The nodes with a high switching frequency are short and are isolated from the noise sensi tive feedback circuitry Careful attention has been given to the routing of high freque...

Страница 17: ...Layout Figure 3 3 Bottom Layer Routing...

Страница 18: ......

Страница 19: ...This chapter provides the TPS61042EVM 226 schematic and bill of materials Topic Page 4 1 Schematic 4 2 4 2 Bill of Materials 4 3 Chapter 4...

Страница 20: ...Schematic 4 1 Schematic...

Страница 21: ...D5 Diode LED white 30 mA 1210 Lumex SML LX2832UWC TR 3 J1 J2 J3 Header 2 pin 100 mil spacing 36 pin strip 0 100 x 2 Sullins PTC36SAAN 1 J4 Header 3 pin 100 mil spacing 36 pin strip 0 100 x 3 Sullins P...

Страница 22: ......

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