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【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

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

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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.

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Summary of Contents for LM74670-SQEVM

Page 1: ...LM74670 SQEVM User s Guide Literature Number SNVU494 October 2015 ...

Page 2: ...ription 4 2 2 Board Setup 5 3 Operation 6 3 1 Reverse Polarity Protection 6 3 2 Output Voltage 8 4 Board Layout 10 5 Schematic 12 6 Bill of Materials 13 2 Table of Contents SNVU494 October 2015 Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated ...

Page 3: ... body diode voltage drop at the output 8 6 The LM74670 Q1 SQEVM Output voltage waveform 9 7 Top Assembly Layer 10 8 Bottom Layer 11 9 LM74670 Q1 SQEVM Schematic 12 List of Tables 1 Device and Package Configurations 4 2 LM74670 Q1 SQ EVM Bill of Materials for Configuration 13 3 SNVU494 October 2015 List of Figures Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated ...

Page 4: ...electrical characteristics see the LM74670 Q1 Reverse Polarity Protection Smart Diode Controller Data Sheet LM74670 Q1 Table 1 Device and Package Configurations CONVERTER IC PACKAGE U1 LM74670 Q1 VSSOP 8 2 Setup This section describes the jumpers and connectors on the EVM as well and how to properly connect set up and use the LM74670 Q1 SQEVM Ensure the power supply is turned off while making conn...

Page 5: ...y mode or the drain current is smaller than 1mA typical The tests outlined in this document have 3A constant load current and 12V input voltage supply VBAT_1 Make sure that the external power supply source for the input voltage is capable of providing enough current to the output load so that the output voltage can be obtained Once all connections to the LM74670 Q1 SQEVM are verified power can be ...

Page 6: ... 20V the output voltage blue does not go negative and therefore the load is protected from dynamic reverse pulses at the input The LM74670 Q1 reacts the negative voltage surge within 2μsec and shuts down the MOSFET by pulling the gate voltage to zero green The output slowly decays due to the large output capacitors and increased time constant Figure 3 Response to Reverse Polarity 12V to 20V 6 List...

Page 7: ...cts the load from negative voltages Figure 4 Response to Start Up Reverse Polarity Note Please note that the leakage current is 60uA typ This means that if you apply a voltage on the output you will see some voltage on input and this voltage will collapse if you draw more current than the leakage current The same applies for a reverse voltage applied on the input 7 SNVU494 October 2015 List of Tab...

Page 8: ...rop at the output During the rest of the period of conduction the LM74670 Q1 will drive the gate of the MOSFET When the MOSFET is ON it provides a low resistive path for the drain current to flow and minimizes the power dissipation associated with forward conduction The power losses during the MOSFET ON state depend primarily on the RDSON of the selected MOSFET and load current The LM74670 Q1 oper...

Page 9: ...www ti com Operation Figure 6 The LM74670 Q1 SQEVM Output voltage waveform 9 SNVU494 October 2015 List of Tables Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated ...

Page 10: ...Board Layout www ti com 4 Board Layout Figure 7 Top Assembly Layer 10 List of Tables SNVU494 October 2015 Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated ...

Page 11: ...www ti com Board Layout Figure 8 Bottom Layer 11 SNVU494 October 2015 List of Tables Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated ...

Page 12: ...However they are typically used to clamp the positive and negative voltage surges respectively The output capacitors are recommended to protect the immediate output voltage collapse as a result of line disturbance 12 List of Tables SNVU494 October 2015 Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated ...

Page 13: ...1 Diode TVS Uni 28 V 600 W SMB Diodes Inc SMBJ28A 13 F 1 D1_2 Diode TVS Uni 14 V 600 W SMB Diodes Inc SMBJ14A 13 F 3 DRV_1 P1 P2 NONE NONE 1 FET1_A MOSFET N CH 40 V 75 A PowerPAK_SO 8L Vishay SQJ422EP T1 GE3 Siliconix 2 GND J4 Standard Banana Jack Insulated Black Keystone 6092 2 J3 VBAT_1 Standard Banana Jack Insulated Red Keystone 6091 2 TP2 TP4 Test Point Multipurpose Black TH Keystone 5011 2 TP...

Page 14: ...ring 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 warranted for the remainder of the original warranty period Replaced EVMs shall be warranted for a new full ninety 90 day warranty period 3 ...

Page 15: ... by Industry Canada to operate with the antenna types listed in 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 rég...

Page 16: ... 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 cu...

Page 17: ...F 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 ONE YEAR AFTER THE RELATED CAUSE OF ACTION HAS OCCURRED 8 2 Specific Limitations IN NO EVENT SHALL T...

Page 18: ...esponsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related information or support that may be provided by TI Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which anticipate dangerous consequences of failur...

Page 19: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Texas Instruments LM74670 SQEVM ...

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