Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsDev KitsPCB design board

User's Guide

SLVU384A–January 2011–Revised July 2013

TPS622312EVM-574 User's Guide

This user's guide describes the characteristics, operation, and use of the TPS622312EVM-574 evaluation

module (EVM). This EVM demonstrates three individual configurations of the Texas Instruments

TPS6223x 3-MHz, synchronous step-down converter capable of supplying up to 500 mA of output current.

This user's guide includes setup instructions, a schematic diagram, a bill of materials, and printed-circuit

board layout drawings for the evaluation module.

Contents

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

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

3 Board Layout ................................................................................................................ 3

4 Schematic and Bill of Materials ........................................................................................... 7

5 Related Documentation From Texas Instruments ...................................................................... 8

List of Figures

1 Assembly Layer ............................................................................................................. 4

2 Top Layer Routing .......................................................................................................... 5

3 Bottom Layer Routing ...................................................................................................... 6

4 TPS622312/13/14EVM-574 Schematic .................................................................................. 7

List of Tables

1 Device and Output Voltage Configurations.............................................................................. 2

2 Input and Output Connections ............................................................................................ 3

3 TPS622312EVM-574 Bill of Materials.................................................................................... 8

SLVU384A–January 2011–Revised July 2013 TPS622312EVM-574 User's Guide

Submit Documentation Feedback

Summary of content (13 pages)

PAGE 1
User's Guide SLVU384A – January 2011 – Revised July 2013 TPS622312EVM-574 User's Guide This user's guide describes the characteristics, operation, and use of the TPS622312EVM-574 evaluation module (EVM). This EVM demonstrates three individual configurations of the Texas Instruments TPS6223x 3-MHz, synchronous step-down converter capable of supplying up to 500 mA of output current.
PAGE 2
Introduction 1 www.ti.com Introduction The Texas Instruments TPS622312EVM-574 evaluation module helps designers evaluate the operation and performance of the TPS6223x family of devices. These devices are high-efficiency, ultra-small size, buck converters that switch at up to 3 MHz. The EVM contains three independent dc/dc converters. Table 1 lists the default output voltages of the converters. Table 1.
PAGE 3
Board Layout www.ti.com 2.1.8 JP12, JP22, and JP32 – Mode This jumper is used to select the operating mode of the converter. The converter operates in a fixedfrequency, low-noise, PWM mode when a jumper is used to short the MODE pin to the ON pin. Shorting the MODE pin and OFF pin together allows the controller to use the power-saving (PFM) mode for high efficiency at low output currents. 2.2 Converter Configurations All converters are designed to use an input voltage between 2.05 V and 6 V.
PAGE 4
Board Layout www.ti.com Board layout is critical for all high-frequency, switch-mode power supplies. Figure 1, Figure 2, and Figure 3 show the board layout for the TPS622312EVM-574 printed-circuit board. The nodes with highswitching frequencies and currents are kept as short as possible to minimize trace inductance. Highimpedance inputs to the TPS622312, such as the Vout pin, have traces that are shielded by ground traces and planes.
PAGE 5
Board Layout www.ti.com Figure 2.
PAGE 6
Board Layout www.ti.com Figure 3.
PAGE 7
Schematic and Bill of Materials www.ti.com 4 Schematic and Bill of Materials This section provides the TPS622312EVM-574 schematic and bill of materials. 4.1 Schematic 1.0 uH 1.0 uH 1.0 uH Figure 4.
PAGE 8
Related Documentation From Texas Instruments 4.2 www.ti.com Bill of Materials Table 3. TPS622312EVM-574 Bill of Materials Count -001 5 RefDes Value Description Size Part Number MFR 3 C11,C21,C31 2.2μF Capacitor, Ceramic, 6.3V, X5R, 20% 0402 JMK105BJ225MV-F CL05A225MQ5NNNC GRM155R60J225ME15D Taiyo Yuden Samsung Murata 3 C12,C22,C32 4.7μF Capacitor, Ceramic, 6.
PAGE 9
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.
PAGE 10
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.
PAGE 11
【Important Notice for Users of EVMs for RF Products 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.
PAGE 12
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.
PAGE 13
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.