ADP2107-EVALZ Analog Devices Inc, ADP2107-EVALZ Datasheet

BOARD EVALUATION FOR ADP2107

ADP2107-EVALZ

Manufacturer Part Number
ADP2107-EVALZ
Description
BOARD EVALUATION FOR ADP2107
Manufacturer
Analog Devices Inc
Datasheets

Specifications of ADP2107-EVALZ

Main Purpose
DC/DC, Step Down
Outputs And Type
1, Non-Isolated
Voltage - Output
2.5V
Current - Output
2A
Voltage - Input
2.7 ~ 5.5V
Regulator Topology
Buck
Frequency - Switching
1.2MHz
Board Type
Fully Populated
Utilized Ic / Part
ADP2107
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
FEATURES
Efficiency > 95%
Input voltage range: 2.7 V to 5.5 V
Output voltage range: 0.8 V to V
Maximum output current: 2.0 A
Switching frequency: 1.2 MHz
Quiescent current: 20 μA
Shutdown current: 0.1 μA
Enable/shutdown logic input
Optimized for small ferrite core inductors
Optimized for tiny ceramic input and output capacitors
Programmable soft start with single capacitor
Programmable compensation for optimizing transient
Rev. 0
Evaluation boards are only intended for device evaluation and not for production purposes.
Evaluation boards as supplied “as is” and without warranties of any kind, express, implied, or
statutory including, but not limited to, any implied warranty of merchantability or fitness for a
particular purpose. No license is granted by implication or otherwise under any patents or other
intellectual property by application or use of evaluation boards. Information furnished by Analog
Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog
Devices for its use, nor for any infringements of patents or other rights of third parties that may result
from its use. Analog Devices reserves the right to change devices or specifications at any time
without notice. Trademarks and registered trademarks are the property of their respective owners.
Evaluation boards are not authorized to be used in life support devices or systems.
performance
IN
ADP2107
ENB
R2
C6
FUNCTIONAL BLOCK DIAGRAM
ANALOG DEVICES, POWER MANAGEMENT (STP)
Evaluation Board for Step-Down DC-to-DC
R4
ADP2107
J1
R1
R5
C7
C5
R3
V
IN
C2
Figure 1.
C1
EVALUATION BOARD
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
GENERAL DESCRIPTION
The ADP2107 evaluation board is a complete step-down dc-to-dc
converter solution using the ADP2107 step-down dc-to-dc
converter. It provides a ±1% accurate (±3% over all conditions),
regulated output voltage with load currents up to 2 A. It comes
in two versions: the ADP2107-1.8-EVAL with fixed output
voltage of 1.8 V, and the ADP2107-EVAL with adjustable output
voltage initially set to 2.5 V.
The ADP2107 is a synchronous, step-down dc-to-dc converter
that uses a current-mode pulse width modulation (PWM)
control scheme at medium-to-heavy load currents for high
efficiency, but smoothly transitions to a pulse frequency
modulation (PFM) scheme at light loads to conserve power.
The power switch and synchronous rectifier are integrated for
minimal external part count and high efficiency. The ADP2107
has been optimized for operation with small ferrite core
inductors and tiny ceramic capacitors to deliver the maximum
output power per square inch of the PCB board area.
For more details, see the
C4
C3
L1
V
OUT
:
V
GND
OUT
©2006 Analog Devices, Inc. All rights reserved.
Converter Solution
ADP2107
EVAL-ADP2107
data sheet.
www.analog.com

Related parts for ADP2107-EVALZ

ADP2107-EVALZ Summary of contents

Page 1

... It provides a ±1% accurate (±3% over all conditions), regulated output voltage with load currents comes in two versions: the ADP2107-1.8-EVAL with fixed output voltage of 1.8 V, and the ADP2107-EVAL with adjustable output voltage initially set to 2.5 V. The ADP2107 is a synchronous, step-down dc-to-dc converter ...

Page 2

... EVAL-ADP2107 TABLE OF CONTENTS Features .............................................................................................. 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Using the Evaluation Board............................................................. 3 Powering Up the Evaluation Board............................................ 3 Measuring Evaluation Board Performance............................... 3 Modifying the Evaluation Board .................................................... 4 Changing the Output Voltage ..................................................... 4 REVISION HISTORY 12/06—Revision 0: Initial Version Changing the Load Transient Response.....................................4 Measurement Setup...........................................................................5 Typical Performance Characteristics ...

Page 3

... Insert Jumper J1, and check to see if the output voltage rises to the regulated output voltage (1.8 V for the ADP2107-1.8-EVAL and 2.5 V for the ADP2107-EVAL). If the load is not already enabled, enable the load, and check that it is drawing the proper current and that the output voltage maintains voltage regulation. ...

Page 4

... C6) as explained in the Output Capacitor section and Loop Compensation section of the ADP2107 ADP2107 of both ADP2107 evaluation boards is set the output resistor in BOT voltage for load transient. Consider an example where the load transient response of ADP2107-1.8-EVAL is changed to 10% of the output voltage for load transient ...

Page 5

... ADP2107 OUTPUT VOLTAGE WAVEFORM 3A VOLTAGE SOURCE INDUCTOR LX NODE WAVEFORM Figure 2. Typical Measurement Setup Rev Page EVAL-ADP2107 ELECTRONIC LOAD VOLTMETER V OUT I OUT GND PROBE OUTPUT VOLTAGE ACROSS  OUTPUT CAPACITOR L1 V OUT CURRENT PROBE OSCILLOSCOPE 1V SEP 1V SEP OFF EVE OFF DIV VD 1S DIV ...

Page 6

... Figure 7. PWM Mode of Operation at Medium/Heavy Load (1 OUTPUT CURRENT 2 OUTPUT VOLTAGE CH2 LOW (AC-COUPLED) –140mV 1 LX (SWITCH) NODE VOLTAGE CH1 2V CH2 100mV M 10µs A CH2 CH3 1A T 20.20% Figure Load Transient Response for ADP2107-EVAL with V Set to 2.5 V OUT = 5.5V 10000 1000 A CH3 3.88V 100mV ...

Page 7

... ORDERING INFORMATION BILL OF MATERIALS Table 1. Bill of Materials for ADP2107-1.8-EVAL with V Description Ref. Des. Capacitor, MLCC, 10 μ C1, C2 0805, X5R, SMD Capacitor, MLCC, 22 μF, 6.3 V, C3, C4 0805, X5R, SMD Capacitor, MLCC 0603, X7R, SMD Capacitor, MLCC 0603, NPO Capacitor, MLCC, 0.1 μ ...

Page 8

... A Step-Down DC-to-DC U1 Converter with Adjustable Output Headers, 0.100, Single, Straight V OUT GND, J1 Refer to the Typical Applications Circuit for Adjustable Output Voltage Option figure in the ADP2107 data sheet 100kΩ Figure 10. Evaluation Board Schematic for ADP2107-EVAL with Adjustable V Set to 2.5 V OUT 1 Ref ...

Page 9

... ORDERING GUIDE Model Description ADP2107-1.8-EVAL Evaluation Board ADP2107-EVAL Evaluation Board ESD CAUTION Rev Page EVAL-ADP2107 ...

Page 10

... EVAL-ADP2107 NOTES Rev Page ...

Page 11

... NOTES Rev Page EVAL-ADP2107 ...

Page 12

... EVAL-ADP2107 NOTES ©2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. EB06314-0-12/06(0) T Rev Page ...

Related keywords