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ADP1043AACPZ-RL Fiches technique(PDF) 1 Page - Analog Devices

No de pièce ADP1043AACPZ-RL
Description  Digital Controller for Isolated Power Supply Applications
Download  72 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
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Digital Controller for Isolated
Power Supply Applications
ADP1043A
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2009 Analog Devices, Inc. All rights reserved.
FEATURES
Integrates all typical controller functions
Digital control loop
Remote and local voltage sense
Primary and secondary side current sense
PWM control
Synchronous rectifier control
Current sharing
Integrated programmable loop filter
I2C interface
Extensive fault detection and protection
Extensive programming
Fast calibration
EEPROM
Standalone or microcontroller control
APPLICATIONS
AC-to-DC power supplies
Isolated dc-to-dc power supplies
Redundant power supplies
Parallel power supplies
Server, storage, network, and communications infrastructure
GENERAL DESCRIPTION
The ADP1043A is a secondary side power supply controller IC
designed to provide all the functions that are typically needed in
an ac-to-dc or isolated dc-to-dc control application.
The ADP1043A is optimized for minimal component count,
maximum flexibility, and minimum design time. Features
include remote voltage sense, local voltage sense, primary and
secondary side current sense, pulse-width modulation (PWM)
generation, and hot-swap sense and control. The control loop is
digital with an integrated programmable digital filter. Protection
features include current limiting, ac sense, undervoltage lockout
(UVLO), and overvoltage protection (OVP).
The built-in EEPROM provides extensive programming of the
integrated loop filter, PWM signal timing, inrush current, and
soft start timing and sequencing. Reliability is improved through
a built-in checksum and redundancy of critical circuits.
A comprehensive GUI is provided for easy design of loop filter
characteristics and programming of the safety features. The
industry-standard I2C bus provides access to the many moni-
toring and system test functions.
The ADP1043A is available in a 32-lead LFCSP and operates
from a single 3.3 V supply.
TYPICAL APPLICATION CIRCUIT
RES
RTD
ADD
VCORE FLAGIN PSON PGOOD2 PGOOD1 SDA SCL
VDD DGND AGND
OUTA
OUTB
OUTC
OUTD
OUTAUX
CS1
SR1 SR2
ACSNS
PGND
VS1
GATE
VS3+
VS3–
SHAREo
SHAREi
DRIVER
ADuM1410
DRIVER
VS2
DRIVER
PFC
AC
INPUT
LOAD
MICROCONTROLLER
CS2– CS2+
VDD
Figure 1.


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