Texas Instruments LP2951EVM User Manual
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Texas Instruments LP2951EVM User Manual

Texas Instruments LP2951EVM User Manual

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1
Introduction
2
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3
Setup
4
Thermal Guidelines and Layout Recommendations
5
Board Layout
6
EVM Schematic
7
Bill of Materials
1
EVM With SON Package and SOIC Pads
2
3
4
5
and R
Used to Set Fixed Voltage Mode on EVM
1
2
6
-R
3
7
8
9
10
LP2951EVM Schematic
1
Compatible Parts and Packages for LP2951EVM
2
Shutdown Jumper Position Versus Output
3
Bill of Materials
All trademarks are the property of their respective owners.
SLVUAS6A - March 2017 - Revised January 2018
Submit Documentation Feedback
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1
3
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-C
4
7
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8
Used to Set Output Voltage in Adjustable Voltage Mode
6
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Copyright © 2017-2018, Texas Instruments Incorporated
SLVUAS6A - March 2017 - Revised January 2018
Contents
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List of Figures
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List of Tables
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User's Guide
LP2951EVM
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2
2
6
8
9
10
11
2
3
3
4
4
5
7
8
9
10
2
6
11
1

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  • Page 1: Table Of Contents

    ....................LP2951EVM Board Layout ....................LP2951EVM Schematic List of Tables ............... Compatible Parts and Packages for LP2951EVM ................Shutdown Jumper Position Versus Output ......................Bill of Materials All trademarks are the property of their respective owners. SLVUAS6A – March 2017 – Revised January 2018...

  • Page 2: Hw Description

    HW Description This section describes the hardware of the LP2951EVM. 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.

  • Page 3: Input Capacitors

    ESR of an electrolytic is typically enough to keep the device stable. Figure 3. Output Capacitors C SLVUAS6A – March 2017 – Revised January 2018 LP2951EVM Submit Documentation Feedback Copyright © 2017–2018, Texas Instruments Incorporated...

  • Page 4: Location For Bypass Capacitor

    R connects the Sense pin and the Output pin. Figure 5. R and R Used to Set Fixed Voltage Mode on EVM LP2951EVM SLVUAS6A – March 2017 – Revised January 2018 Submit Documentation Feedback Copyright © 2017–2018, Texas Instruments Incorporated...
  • Page 5 Figure 6. Resistors R Used to Set Output Voltage in Adjustable Voltage Mode SLVUAS6A – March 2017 – Revised January 2018 LP2951EVM Submit Documentation Feedback Copyright © 2017–2018, Texas Instruments Incorporated...
  • Page 6 Setup These sections describe the jumpers and connectors on the EVM as well as how to properly connect, setup, and use the LP2951EVM. Input/Output Connectors and Jumper Description NOTE: Connectors J1-J3 and J12-J14 are blank SMB connectors. These can be populated, or wires can be soldered directly to them.

  • Page 7: Resistors R

    Setup www.ti.com Operating Modes There are two operating modes of the LP2951EVM. Either fixed voltage operation mode, which is what the EVM is set to out of the packaging, or adjustable voltage mode which the designer can enable. 3.2.1 Fixed Output Voltage Mode This is the standard way the EVM is populated out of the packaging.

  • Page 8: Evm With Adjustable Mode Resistors Populated

    125 °C. The layout design must be copper trace. Plane areas smartly, as thermal sinks, to prevent T to exceed the absolute maximum rating under all temperature conditions and voltage conditions across the part. LP2951EVM SLVUAS6A – March 2017 – Revised January 2018 Submit Documentation Feedback Copyright © 2017–2018, Texas Instruments Incorporated...

  • Page 9: Lp2951Evm Board Layout

    Board Layout www.ti.com Board Layout Figure 9. LP2951EVM Board Layout SLVUAS6A – March 2017 – Revised January 2018 LP2951EVM Submit Documentation Feedback Copyright © 2017–2018, Texas Instruments Incorporated...

  • Page 10: Lp2951Evm

    SENSE FEEDBACK FEEDBACK SENSE VTAP SHUTDOWN LP2951DR SHUTDOWN VTAP ERROR _______ ERROR Copyright © 2017, Texas Instruments Incorporated Figure 10. LP2951EVM Schematic LP2951EVM SLVUAS6A – March 2017 – Revised January 2018 Submit Documentation Feedback Copyright © 2017–2018, Texas Instruments Incorporated...
  • Page 11 39.0 k 0805 RG2012P-393-B-T5 Susumu Co Ltd 0.125 W, 0805 Adjustable Micropower Voltage Regulator with D0008A LP2951DR Texas Instruments Shutdown, D0008A (SOIC-8) SLVUAS6A – March 2017 – Revised January 2018 LP2951EVM Submit Documentation Feedback Copyright © 2017–2018, Texas Instruments Incorporated...

  • Page 12: Revision History

    Changes from Original (March 2017) to A Revision ....................... Page ..............• Changed C7 value from 4.7 µF to 47 µF in Bill of Materials table Revision History SLVUAS6A – March 2017 – Revised January 2018 Submit Documentation Feedback Copyright © 2017–2018, Texas Instruments Incorporated...
  • Page 13 STANDARD TERMS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms set forth herein.
  • Page 14 FCC Interference Statement for Class B EVM devices NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
  • Page 15 【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年3月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.
  • Page 16 Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2018, Texas Instruments Incorporated...
  • Page 17 IMPORTANT NOTICE FOR TI DESIGN INFORMATION AND RESOURCES Texas Instruments Incorporated (‘TI”) technical, application or other design advice, services or information, including, but not limited to, reference designs and materials relating to evaluation modules, (collectively, “TI Resources”) are intended to assist designers who are developing applications that incorporate TI products;...

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