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ADP2443-EVALZ

Description
EVAL BOARD FOR ADP2443
CategoryDevelopment board/suite/development tools   
File Size698KB,24 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance
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ADP2443-EVALZ Overview

EVAL BOARD FOR ADP2443

ADP2443-EVALZ Parametric

Parameter NameAttribute value
The main purposeDC/DC, step down
Output and type1. Non-isolation
Voltage - Output5V
Current - Output3A
Voltage - input4.5 V ~ 36 V
Regulator topologystep down
Frequency - Switch600kHz
Board typecompletely filled
What's includedplate
IC/parts usedADP2443
Data Sheet
FEATURES
Continuous output current: 3 A
Input voltage: 4.5 V to 36 V
Integrated MOSFETs: 98 mΩ/35 mΩ
Reference voltage: 0.6 V ± 1%
Fast minimum on time: 50 ns
Programmable switching frequency: 200 kHz to 1.8 MHz
Synchronizes to external clock: 200 kHz to 1.8 MHz
Precision enable and power good
Cycle-by-cycle current limit with hiccup protection
External compensation
Programmable soft start time
Startup into a precharged output
Supported by
ADIsimPower
design tool
3 A, 36 V, Synchronous Step-Down
DC-to-DC Regulator
ADP2443
TYPICAL APPLICATION CIRCUIT
ADP2443
V
IN
C
IN
R
RAMP
RAMP
PGOOD
RT/SYNC
R
T
C
VREG
VREG
GND
FB
COMP
SS
PGND
C
SS
R
C
R
BOT
C
C
14794-001
PVIN
EN
BST
SW
C
BST
L
V
OUT
R
TOP
C
OUT
Figure 1.
APPLICATIONS
Intermediate power rail conversion
Multicell battery powered systems
Process control and industrial automation
Healthcare and medical
Networking and servers
GENERAL DESCRIPTION
The
ADP2443
is synchronous step-down, dc-to-dc regulator
with an integrated 98 mΩ, high-side power metal oxide semicon-
ductor field effect transistor (MOSFET) and a 35 mΩ, synchronous
rectifier MOSFET to provide a high efficiency solution in a
compact 4 mm × 4 mm LFCSP package. The regulators operate
from an input voltage range of 4.5 V to 36 V. The output voltage
can be adjusted down to 0.6 V and deliver up to 3 A of
continuous current. The fast 50 ns minimum on time allows the
regulators convert high input voltage to low output voltage at high
frequency.
The
ADP2443
uses an emulated current mode, constant frequency
pulse-width modulation (PWM) control scheme for excellent
stability and transient response. The switching frequency of the
ADP2443
can be programmed from 200 kHz to 1.8 MHz. The
synchronization function allows the switching frequency be syn-
chronized with an external clock to minimize the system noise.
The
ADP2443
targets high performance applications that require
high efficiency and design flexibility. External compensation
and an adjustable soft start function provide design flexibility.
The power-good output and precision enable input provide
simple and reliable power sequencing.
Other key features include undervoltage lockout (UVLO),
overvoltage protection (OVP), overcurrent protection (OCP),
short-circuit protection (SCP), and thermal shutdown (TSD).
The
ADP2443
operates over the −40°C to +125°C operating
junction temperature range and is available in a 24-lead, 4 mm ×
4 mm LFCSP package.
100
95
90
85
EFFICIENCY (%)
80
75
70
65
60
55
14794-002
V
OUT
= 5V
V
OUT
= 3.3V
50
0
0.5
1.0
1.5
2.0
2.5
3.0
OUTPUT CURRENT (A)
Figure 2. Efficiency vs. Output Current, V
IN
= 24 V, f
SW
= 300 kHz
Rev. 0
Document Feedback
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
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. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.

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