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One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
Evaluation Board for the ADP2119/ADP2120 Step-Down Regulator
GENERAL DESCRIPTION
The
ADP2119/ADP2120
are synchronous, step-down, dc-to-dc
regulators in a compact 3 mm × 3 mm LFCSP_WD package.
The ADP2119/ADP2120 evaluation boards provide an easy way
to evaluate the device. This user guide describes how to quickly
set up the board to collect performance data. Full details on the
ADP2119/ADP2120 are available in the ADP2119/ADP2120
data sheet, which is available from Analog Devices, Inc., and
Figure 1. ADP2119 Evaluation Board
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
ADP2119/ADP2120 EVALUATION BOARDS
Rev. 0 | Page 1 of 8
Evaluation Board User Guide
should be consulted in conjunction with this user guide when
using the evaluation boards.
The ADP2119/ADP2120 run from input voltages of 2.3 V to 5.5 V
and require minimal external components to provide a high
efficiency solution with integrated power switch, synchronous
rectifier, and internal compensation.
Figure 2. ADP2120 Evaluation Board
UG-188
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Table of Contents
Related Manuals for Analog Devices UG-188
Summary of Contents for Analog Devices UG-188
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Page 1: General Description
Full details on the rectifier, and internal compensation. ADP2119/ADP2120 are available in the ADP2119/ADP2120 data sheet, which is available from Analog Devices, Inc., and ADP2119/ADP2120 EVALUATION BOARDS Figure 1. ADP2119 Evaluation Board Figure 2. -
Page 2: Table Of Contents
UG-188 Evaluation Board User Guide TABLE OF CONTENTS General Description ................. 1 Typical Performance Characteristics ..........5 ADP2119/ADP2120 Evaluation Boards ........1 Evaluation Board Schematics and Artwork........6 Revision History ................2 Evaluation Board Layout ..............7 Setting Up the Evaluation Board ............ 3 Ordering Information...............8... -
Page 3: Setting Up The Evaluation Board
Evaluation Board User Guide UG-188 SETTING UP THE EVALUATION BOARD POWERING UP THE EVALUATION BOARD points on the board. If the voltmeters are not connected to the right test point, the measured voltages may be incorrect due to ADP2119/ADP2120 evaluation boards are fully assembled the voltage drop across the leads and/or connections between and tested. - Page 4 UG-188 Evaluation Board User Guide scope to an ac coupling, 10 mV/division, 2 μs/division time base and 20 MHz bandwidth. A standard oscilloscope probe has a long wire ground clip. For high frequency measurements, this ground clip picks up high frequency noise and injects it into the measured output ripple.
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Page 5: Typical Performance Characteristics
Evaluation Board User Guide UG-188 TYPICAL PERFORMANCE CHARACTERISTICS (AC) = 1.0V = 1.2V = 1.5V = 1.8V = 2.5V = 3.3V 20.0mV CH2 5.00V M4.00µs A CH4 820mA CH4 500mA Ω –40.0000ns OUTPUT CURRENT (A) Figure 4. ADP2119 Efficiency, V = 5 V, FPWM Figure 7. -
Page 6: Evaluation Board Schematics And Artwork
UG-188 Evaluation Board User Guide EVALUATION BOARD SCHEMATICS AND ARTWORK PGOOD 10Ω 0.1µF 22µF/6.3V 10kΩ ADP2119 PVIN SYNC/MODE PGOOD VOUT 1.5µH PGND SYNC/MODE 22µF 22µF 6.3V 6.3V 10kΩ 10kΩ OPTIONAL VOUT Figure 10. ADP2119 Evaluation Board Schematic PGOOD 10Ω 22µF/6.3V 0.1µF... -
Page 7: Evaluation Board Layout
Evaluation Board User Guide UG-188 EVALUATION BOARD LAYOUT Figure 12. Top Layer Figure 13. Bottom Layer Figure 14. Silkscreen Top Rev. 0 | Page 7 of 8... -
Page 8: Ordering Information
By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you have read and agreed to the Agreement.
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