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User's Guide

SLVU553–October 2011

TLV71733PEVM-072 Evaluation Module

This user’s guide describes operational use of the TLV71733PEVM-072 evaluation module as a reference

design for engineering demonstration and evaluation of the TLV717xxP, low-dropout linear regulator.

Included in this user’s guide are setup instructions, a schematic diagram, layout and thermal guidelines, a

bill of materials, and test results.

Contents

1 Introduction .................................................................................................................. 2

2 Setup ......................................................................................................................... 2

2.1 Input/Output Connectors and Jumper Descriptions ........................................................... 2

2.2 Equipment Setup ................................................................................................... 2

3 Operation ..................................................................................................................... 2

4 Test Results ................................................................................................................. 3

4.1 Turnon Sequence .................................................................................................. 3

4.2 Output Load Transient ............................................................................................. 3

5 Thermal Guidelines and Layout Recommendations ................................................................... 4

6 Board Layout ................................................................................................................ 5

7 Schematic and Bill of Materials ........................................................................................... 6

7.1 Schematic ........................................................................................................... 6

7.2 Bill of Materials ..................................................................................................... 6

List of Figures

1 Turnon Sequence ........................................................................................................... 3

2 Load Step and Transient Response...................................................................................... 4

3 Top-Layer Silkscreen ....................................................................................................... 5

4 Top-Layer Routing .......................................................................................................... 5

5 Bottom-Layer Routing ...................................................................................................... 6

6 TLV71733PEVM-072 Schematic.......................................................................................... 6

List of Tables

1 TLV71733PEVM-072 Bill of Materials.................................................................................... 6

SLVU553–October 2011 TLV71733PEVM-072 Evaluation Module

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Summary of content (12 pages)

PAGE 1
User's Guide SLVU553 – October 2011 TLV71733PEVM-072 Evaluation Module This user’s guide describes operational use of the TLV71733PEVM-072 evaluation module as a reference design for engineering demonstration and evaluation of the TLV717xxP, low-dropout linear regulator. Included in this user’s guide are setup instructions, a schematic diagram, layout and thermal guidelines, a bill of materials, and test results. 1 2 3 4 5 6 7 Contents Introduction .....................................................
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Introduction 1 www.ti.com Introduction The Texas Instruments TLV71733PEVM-072 evaluation module (EVM) helps design engineers to evaluate the operation and performance of the TLV717xxP family of linear regulators for use in their own circuit applications. This particular EVM configuration contains a single linear regulator with internal thermal and current-limit shutdowns. The TLV717xxP linear regulator offers current foldback, which throttles back the output current as the load resistance decreases.
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Test Results www.ti.com 4 Test Results This section provides typical performance waveforms for the TLV71733PEVM-072 printed-circuit board (PCB). 4.1 Turnon Sequence Figure 1 shows the turnon/off characteristic where VIN is preset to 5 V, the output drives a 100-mA load, and the EN turnon is stepped to 5 V (C2, red). The output (C3, blue) shows a monotonic rise time of approximately 50 µs. The output voltage start-up ramp is not load dependant. Figure 1. Turnon Sequence 4.
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Thermal Guidelines and Layout Recommendations www.ti.com Figure 2. Load Step and Transient Response 5 Thermal Guidelines and Layout Recommendations Thermal management is a key component of design of any power converter and is especially important when the power dissipation in the low-dropout (LDO) linear regulator is high.
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Board Layout www.ti.com 6 Board Layout Figure 3. Top-Layer Silkscreen Figure 4.
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Schematic and Bill of Materials www.ti.com Figure 5. Bottom-Layer Routing 7 Schematic and Bill of Materials 7.1 Schematic U1 J1 J3 TLV717xxPDQN VIN 4 OUT 3 ON JP1 PWPD 1.0 mF Vout 1 IN C1 EN C2 2 1.0 mF GND 5 EN OFF J4 J2 GND GND Figure 6. TLV71733PEVM-072 Schematic 7.2 Bill of Materials Table 1. TLV71733PEVM-072 Bill of Materials 6 Count RefDes Value Description Size Part Number MFR 2 C1, C2 1.
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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.
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EVALUATION BOARD/KIT/MODULE (EVM) ADDITIONAL TERMS Texas Instruments (TI) provides the enclosed Evaluation Board/Kit/Module (EVM) under the following conditions: 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.
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FCC Interference Statement for Class B EVM devices 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. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
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【Important Notice for Users of this Product in Japan】】 This development kit is NOT certified as Confirming to Technical Regulations of Radio Law of Japan If you use this product in Japan, you are required by Radio Law of Japan to follow the instructions below with respect to this product: 1. 2. 3. Use this product in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal Affairs and Communications on March 28, 2006, based on Sub-section 1.
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EVALUATION BOARD/KIT/MODULE (EVM) WARNINGS, RESTRICTIONS AND DISCLAIMERS For Feasibility Evaluation Only, in Laboratory/Development Environments. Unless otherwise indicated, this EVM is not a finished electrical equipment and not intended for consumer use.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.