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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 1.9 V to 3.9 V and the output voltage range of 1.9 V to 3.9 V .

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 50

°

C. The EVM is designed to operate

properly with certain components above 50

°

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

©

2011, Texas Instruments Incorporated

Summary of Contents for TPS62730

Page 1: ...l Layouts 5 5 3 Bill of Materials 7 6 Oscilloscope Traces 7 List of Figures 1 EVM Schematic and Evaluation Setup 3 2 TPS62730 EVM Board Schematic 5 3 Assembly Layer 5 4 Top Layer 6 5 Bottom Layer 6 6...

Page 2: ...IC will be in an unknown state mode and the output voltage could be anywhere between the input voltage and the regulation voltage The EVM has a pullup resistor on the ON BYP pin to Vin so that it stay...

Page 3: ...d of DMM 2 J5 2 SNS output Negative lead of DMM 2 J6 1 2 GND Negative lead to system load or load resistance J7 1 STAT Positive lead of DMM meter 3 J7 2 GND Negative lead of DMM meter 3 JP1 1 2 ON App...

Page 4: ...may be required depending on power supply decay single sequence trigger on CH2 and removing input power The phase node is shown going into PFM then disabling switching and then indicating bypass mode...

Page 5: ...nd Bill of Materials 5 1 Schematic Figure 2 TPS62730 EVM Board Schematic 5 2 Physical Layouts Figure 3 Assembly Layer 5 SLVU455 April 2011 TPS62730 Stepdown Converter With Bypass Mode for Ultralow Pow...

Page 6: ...f Materials www ti com Figure 4 Top Layer Figure 5 Bottom Layer 6 TPS62730 Stepdown Converter With Bypass Mode for Ultralow Power Wireless SLVU455 April 2011 Applications Submit Documentation Feedback...

Page 7: ...g 0 100 inch 2 54 mm 3 PEC02SAAN Sullins 1 L1 2 2 H Inductor SMT 0 8 A 0 23 0805 LQM21PN2R2NGC muRata 1 R1 10 0 k Resistor chip 1 16W 1 0603 Std Std 1 R2 1 00 M Resistor chip 1 16W 1 0603 Std Std 1 U1...

Page 8: ...e CH2 Output Ripple 0 2 s div Figure 8 PFM Mode at Low Load 11 mA CH1 Phase CH2 Output Ripple 1 s div 8 TPS62730 Stepdown Converter With Bypass Mode for Ultralow Power Wireless SLVU455 April 2011 Appl...

Page 9: ...Input Power CH1 Phase Node CH2 STAT Pin Figure 10 Transition From Converter Switch Mode to Bypass Mode by Pulling ON BYP Pin Low 9 SLVU455 April 2011 TPS62730 Stepdown Converter With Bypass Mode for...

Page 10: ...erter Switch Mode by Pulling ON BYP Pin High Figure 12 Startup by Hot Plugging the Input Power Source 10 TPS62730 Stepdown Converter With Bypass Mode for Ultralow Power Wireless SLVU455 April 2011 App...

Page 11: ...ad Step From 50 mA to 100 mA Figure 14 Transient Output Load Step From 100 mA to 50 mA 11 SLVU455 April 2011 TPS62730 Stepdown Converter With Bypass Mode for Ultralow Power Wireless Applications Submi...

Page 12: ...ct 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...

Page 13: ...orized for use in safety critical applications such as life support where a failure of the TI product would reasonably be expected to cause severe personal injury or death unless officers of the parti...

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