User’s Guide June 2003 Power Management Products SLVU038B
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.
EVM IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not considered by TI to be fit for commercial use.
EVM WARNINGS AND RESTRICTIONS It is important to operate this EVM with an input voltage between 1.8 V and 5.5 V. Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are questions concerning the input range, please contact a TI field representative prior to connecting the input power. Applying loads outside of the specified output range may result in unintended operation and/or possible permanent damage to the EVM.
Preface About This Manual This user’s guide describes the TPS6200xEVM low-power, dc-dc evaluation module for high-efficiency, step-down converters. How to Use This Manual - Chapter 1 Introduction - Chapter 2 Evaluation With the TPS6200xEVM - Chapter 3 PCB Layout Information About Cautions and Warnings This book may contain cautions and warnings. This is an example of a caution statement. A caution statement describes a situation that could potentially damage your software or equipment.
vi
Running Title—Attribute Reference Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 SLVP168-001 EVM Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 SLVP168-002 EVM Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 SLVP168 Bill of Materials . . . . . . . . . . . . . . . . . .
Running Title—Attribute Reference Figures 1–1 1–2 3–1 3–2 TPS62000 (SLVP168-001) EVM Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TPS62007 (SLVP168-002) EVM Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Component Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Top and Bottom Layers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 1 Introduction The Texas Instruments low-power dc-dc EVMs for high-efficiency step-down converters, TPS62000 to TPS62007, help designers evaluate these devices. The EVMs make it possible to evaluate different modes of the devices as well as the device performance. The TPS6200x EVM is available as the TPS62000 (SLVP168–001) adjustable version set to 2.5 V and the TPS62007 (SLVP168–002), which is a fixed 3.3 V version.
SLVP168-001 EVM Schematic 1.1 SLVP168-001 EVM Schematic Figure1–1 shows the SLVP168-001 EVM schematic diagram. Figure 1–1. TPS62000 (SLVP168-001) EVM Schematic Diagram PG 1 ILIM GND SYNC 1 EN C2 10 µF 1 VIN U1 1 VIN 8 EN 6 ILIM 7 SYNC 3 AGND L FB PG PGND FC 9 5 4 10 2 TPS62000 10 µH VOUT L1 470 k C5 825 k 6.8 pF C4 R4 C1 0.1 µF C3 R1 R2 10 µF Open 182 k GND GNDA 1.2 SLVP168-002 EVM Schematic Figure1–2 shows the SLVP168-002 EVM schematic diagram. Figure 1–2.
SLVP168 Bill of Materials 1.3 SLVP168 Bill of Materials Table 1–1 lists materials required for the SLVP168 EVM. Table 1–1. SLVP168 EVM Bill of Materials Ref Des –001 –002 Description Size Manufacturer Part Number C1 1 1 Capacitor, ceramic, 0.1-µF, 16-V, X7R, 10% 1206 muRata GRM319R71C104KA01 C2, C5 2 2 Capacitor, ceramic, 10-µF, 6.3 V, X5R, 10% 1206 Taiyo Yuden JMK316BJ106KL C3 1 0 Capacitor, ceramic, 6.
EVM Ordering Information 1.4 EVM Ordering Information Table 1–2. EVM Ordering Information EVM Number Description TPS62000EVM-168 Adjustable output voltage version set to 2.5 V TPS62007EVM-168 3.3-V Fixed output voltage version 1.5 Setup of the EVMs It is important to establish all connections to the EVM before the power supply connected to the EVM is turned on. 1) Connect a power supply (2 V to 5.5 V, depending on the output voltage of the EVM) to the VIN pin and GND pin.
Chapter 2 Evaluation With the TPS6200xEVM This chapter details the evaluation process and features of the EVM. For this purpose, a load is connected to the output pin VOUT and GND1, which allows the load current to be adjusted between 0 mA and 600 mA. For accurate output voltage and input voltage measurements, it is important to measure the voltage on the input and output voltage terminals with kelvin contacts or with a voltmeter connected directly to the input voltage or output voltage terminals.
Enable (EN) Jumper 2.1 Enable (EN) Jumper This jumper is used to enable the device. Connecting the EN pin to VIN (e.g. set jumper, EN, across pin 1 and pin 2) enables the part. 2.2 Synchronization (SYNC) Jumper This jumper is used to force the device into low noise fixed frequency pulse width modulation (PWM) mode by setting the jumper across pin 2 and pin 3.
Chapter 3 PCB Layout As for all switch mode power supplies, the PCB layout is a very important step in the power supply design process. The following figures show the layout for the adjustable and fixed output voltage EVMs. Please refer to the data sheet (SLVS294) for further layout guidelines. Topic 3.1 Page PCB Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PCB Layout 3.1 PCB Layout Figure 3–1. Component Placement Figure 3–2.
