background image

【無線電波を送信する製品の開発キットをお使いになる際の注意事項】 開発キットの中には技術基準適合証明を受けて

いないものがあります。 技術適合証明を受けていないもののご使用に際しては、電波法遵守のため、以下のいずれかの

措置を取っていただく必要がありますのでご注意ください。

1.

電波法施行規則第

6

条第

1

項第

1

号に基づく平成

18

3

28

日総務省告示第

173

号で定められた電波暗室等の試験設備でご使用

いただく。

2.

実験局の免許を取得後ご使用いただく。

3.

技術基準適合証明を取得後ご使用いただく。

なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします。

上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。 日本テキサス・イ

ンスツルメンツ株式会社

東京都新宿区西新宿6丁目24番1号

西新宿三井ビル

3.3.3

Notice for EVMs for Power Line Communication:

Please see

http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page

電力線搬送波通信についての開発キットをお使いになる際の注意事項については、次のところをご覧ください。

http:/

/www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page

3.4

European Union

3.4.1

For EVMs subject to EU Directive 2014/30/EU (Electromagnetic Compatibility Directive)

:

This is a class A product intended for use in environments other than domestic environments that are connected to a
low-voltage power-supply network that supplies buildings used for domestic purposes. In a domestic environment this
product may cause radio interference in which case the user may be required to take adequate measures.

4

EVM Use Restrictions and Warnings:

4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT

LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS.

4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling

or using the EVM, including without limitation any warning or restriction notices. The notices contain important safety information
related to, for example, temperatures and voltages.

4.3

Safety-Related Warnings and Restrictions:

4.3.1

User shall operate the EVM within TI’s recommended specifications and environmental considerations stated in the user
guide, other available documentation provided by TI, and any other applicable requirements and employ reasonable and
customary safeguards. Exceeding the specified performance ratings and specifications (including but not limited to input
and output voltage, current, power, and environmental ranges) for the EVM may cause personal injury or death, or
property damage. If there are questions concerning performance ratings and specifications, User should contact a TI
field representative prior to connecting interface electronics including input power and intended loads. Any loads applied
outside of the specified output range may also result in unintended and/or inaccurate operation and/or possible
permanent damage to the EVM and/or interface electronics. Please consult the EVM user 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, even with the inputs and outputs kept within the specified allowable ranges, some circuit
components may have elevated case temperatures. These components include but are not limited to linear regulators,
switching transistors, pass transistors, current sense resistors, and heat sinks, which can be identified using the
information in the associated documentation. When working with the EVM, please be aware that the EVM may become
very warm.

4.3.2

EVMs are intended solely for use by technically qualified, professional electronics experts who are familiar with the
dangers and application risks associated with handling electrical mechanical components, systems, and subsystems.
User assumes all responsibility and liability for proper and safe handling and use of the EVM by User or its employees,
affiliates, contractors or designees. User assumes all responsibility and liability to ensure that any interfaces (electronic
and/or mechanical) between the EVM and any human body are designed with suitable isolation and means to safely
limit accessible leakage currents to minimize the risk of electrical shock hazard. User assumes all responsibility and
liability for any improper or unsafe handling or use of the EVM by User or its employees, affiliates, contractors or
designees.

4.4 User assumes all responsibility and liability to determine whether the EVM is subject to any applicable international, federal,

state, or local laws and regulations related to User’s handling and use of the EVM and, if applicable, User assumes all
responsibility and liability for compliance in all respects with such laws and regulations. User assumes all responsibility and
liability for proper disposal and recycling of the EVM consistent with all applicable international, federal, state, and local
requirements.

5.

Accuracy of Information:

To the extent TI provides information on the availability and function of EVMs, TI attempts to be as accurate

as possible. However, TI does not warrant the accuracy of EVM descriptions, EVM availability or other information on its websites as
accurate, complete, reliable, current, or error-free.

Summary of Contents for LP2951EVM

Page 1: ...hematic 10 7 Bill of Materials 11 List of Figures 1 EVM With SON Package and SOIC Pads 2 2 Input Capacitors C1 C3 3 3 Output Capacitors C4 C7 3 4 Location for Bypass Capacitor C8 4 5 R1 and R2 Used to Set Fixed Voltage Mode on EVM 4 6 Resistors R3 R6 Used to Set Output Voltage in Adjustable Voltage Mode 5 7 LP2951 Adjustable Output Voltage Block Diagram 7 8 EVM With Adjustable Mode Resistors Popul...

Page 2: ...951EVM 2 1 LP2951 Device The LP2951EVM comes populated with LP2951 50 Q1 in the SON package However this EVM can be used to evaluate the SOIC package LP2951 device as well Figure 1 shows the EVM populated with the SON package and the pads for the SOIC package on the board Table 1 shows all LP2951 part numbers and packages that are compatible with the LP2951EVM Figure 1 EVM With SON Package and SOI...

Page 3: ...outed in series with a 1 Ω resistor R7 from the output to ground This series resistance helps stabilize the internal amplifier of the LP2951 device See the LP2951 or LP2951 N data sheet for the recommended series resistance when using a ceramic output capacitor C5 comes populated on the board and has a value of 2 2 µF C4 and C6 are pads that allow for additional output capacitors to be put on the ...

Page 4: ...s may especially be a problem when using high value external resistors to set the output voltage To fix this problem populate C8 with a 100 pF capacitor and increase the output capacitor to at least 3 3 µF See the LP2951 and LP2951 N data sheets for more information regarding the Cbypass Figure 4 Location for Bypass Capacitor C8 2 5 Fixed Output Voltage Resistors Resistors R1 and R2 are 0 Ω resist...

Page 5: ...so resistors R1 and R2 must first be removed Resistors R4 R6 form a voltage divider and can be populated with values based on the desired output voltage by following the equation on the EVM R3 must be populated with a 0 Ω resistor to short the Feedback pin of the device to the voltage divider of R4 R6 See Section 3 2 2 for additional information regarding setting an adjustable output voltage Figur...

Page 6: ...ut Input for power Connect supply to this connector 3 1 2 J6 Feedback Determines the output voltage Connected to VTAP through R1 with standard setup 3 1 3 J7 ERROR Error output connector This active low output determines if the output voltage is within 6 of its expected value 3 1 4 J4 J8 GND Return path connectors 3 1 5 J9 Output Regulated output voltage connectors 3 1 6 J10 Sense Output voltage s...

Page 7: ...ut of 5 V 3 2 2 Adjustable Output Voltage Mode To enable the adjustable voltage mode the resistors R1 and R2 must be removed Resistors R4 R6 must be populated with specific values based on the desired output voltage while R3 is populated with a 0 Ω resistor The complete equation for the output voltage is where VREF is the nominal 1 235 V reference voltage and IFB is the Feedback pin bias current n...

Page 8: ...put voltage as necessary for test purposes 4 Thermal Guidelines and Layout Recommendations Thermal management is a key component in the design of any power converter and is especially important when the power dissipation in the LDO is high Use Equation 2 to approximate the maximum power dissipation for the particular ambient temperature where Where T J is the junction temperature TA is the ambient...

Page 9: ...ww ti com Board Layout 9 SLVUAS6A March 2017 Revised January 2018 Submit Documentation Feedback Copyright 2017 2018 Texas Instruments Incorporated LP2951EVM 5 Board Layout Figure 9 LP2951EVM Board Layout ...

Page 10: ...CK 0 1 80 k 39 0 k R5 R6 47 F 2 2 F 2 2 F 2 2 F 1 0 R7 C6 C5 C4 C7 1 2 1 2 1 2 J9 1 2 J8 1 2 J10 SENSE 1 2 J11 3 INPUT SHUTDOWN 1 2 FEEDBACK J6 1 2 ERROR OUTPUT 2 3 4 5 1 2 3 4 5 1 J1 J2 J3 J12 SENSE J13 SHUTDOWN J14 INPUT SHUTDOWN OUTPUT SENSE VTAP ERROR FEEDBACK SHUTDOWN R3 Copyright 2017 Texas Instruments Incorporated EVM Schematic www ti com 10 SLVUAS6A March 2017 Revised January 2018 Submit D...

Page 11: ...o 125 degC 8 Pin SON DRG Green RoHS no Sb Br DRG0008A LP2951 50QDRGRQ1 Texas Instruments C1 0 1 µF CAP CERM 1 µF 50 V 10 X7R 1206 1206 C3216X7R1H105K TDK C3 0 1 µF CAP CERM 1 µF 35 V 10 X7R 0603 0603 C1608X7R1V105K0 80AC TDK C4 0 2 2 µF CAP CERM 2 2 µF 35 V 10 X5R 0603 0603 GRM188R6YA225K A12D MuRata C6 0 2 2 µF CAP CERM 2 2 µF 50 V 10 X7R 1206 1206 GRM31CR71H225K A88L MuRata C7 0 47 µF CAP AL 47 ...

Page 12: ...ck Copyright 2017 2018 Texas Instruments Incorporated Revision History Revision History NOTE Page numbers for previous revisions may differ from page numbers in the current version Changes from Original March 2017 to A Revision Page Changed C7 value from 4 7 µF to 47 µF in Bill of Materials table 11 ...

Page 13: ...y set forth above or credit User s account for such EVM TI s liability under this warranty shall be limited to EVMs that are returned during the warranty period to the address designated by TI and that are determined by TI not to conform to such warranty If TI elects to repair or replace such EVM TI shall have a reasonable time to repair such EVM or provide replacements Repaired EVMs shall be warr...

Page 14: ...the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated Antenna types not included in this list having a gain greater than the maximum gain indicated for that type are strictly prohibited for use with this device Concernant les EVMs avec antennes détachables Conformément à la réglementation d Industrie Canada le présent émetteur radio peut fo...

Page 15: ...ed loads Any loads applied outside of the specified output range may also result in unintended and or inaccurate operation and or possible permanent damage to the EVM and or interface electronics Please consult the EVM user 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 even ...

Page 16: ...COST OF REMOVAL OR REINSTALLATION ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES RETESTING OUTSIDE COMPUTER TIME LABOR COSTS LOSS OF GOODWILL LOSS OF PROFITS LOSS OF SAVINGS LOSS OF USE LOSS OF DATA OR BUSINESS INTERRUPTION NO CLAIM SUIT OR ACTION SHALL BE BROUGHT AGAINST TI MORE THAN TWELVE 12 MONTHS AFTER THE EVENT THAT GAVE RISE TO THE CAUSE OF ACTION HAS OCCURRED 8 2 Specif...

Page 17: ... TI Resource NO OTHER LICENSE EXPRESS OR IMPLIED BY ESTOPPEL OR OTHERWISE TO ANY OTHER TI INTELLECTUAL PROPERTY RIGHT AND NO LICENSE TO ANY TECHNOLOGY OR INTELLECTUAL PROPERTY RIGHT OF TI OR ANY THIRD PARTY IS GRANTED HEREIN including but not limited to any patent right copyright mask work right or other intellectual property right relating to any combination machine or process in which TI product...

Reviews: