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ADP1046 数据表(PDF) 1 Page - Analog Devices

部件名 ADP1046
功能描述  Digital Controller for Isolated
Download  96 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

ADP1046 数据表(HTML) 1 Page - Analog Devices

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Digital Controller for Isolated
Power Supply Applications
Data Sheet
ADP1046
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
©2012 Analog Devices, Inc. All rights reserved.
FEATURES
Integrates all typical PWM controller functions
7 PWM control signals
Digital control loop
Integrated programmable loop filters
Programmable voltage line feedforward
Dedicated soft start filter
Programmable dead time for improved efficiency
Remote and local voltage sense
Primary and secondary side current sense
Synchronous rectifier control
Current sharing
OrFET control
I2C interface
Extensive fault detection and protection
Extensive programming and telemetry
Fast digital calibration
User accessible EEPROM
APPLICATIONS
AC-to-DC power supplies
Isolated dc-to-dc power supplies
Redundant power supply systems
Server, storage, network, and communications
infrastructure
GENERAL DESCRIPTION
The ADP1046 is a flexible, digital secondary side controller
designed for ac-to-dc and isolated dc-to-dc secondary side
applications. The ADP1046 is pin-compatible with the
ADP1043A and offers several enhancements and new features,
including voltage feedforward, improved loop response, and
programmable dead time control to maximize efficiency.
The ADP1046 is optimized for minimal component count,
maximum flexibility, and minimum design time. Features
include local and remote voltage sense, primary and secondary
side current sense, digital pulse-width modulation (PWM)
generation, current sharing, and redundant OrFET control. The
control loop digital filter and compensation terms are integrated
and can be programmed over the I2C interface. Programmable
protection features include overcurrent protection (OCP), over-
voltage protection (OVP), undervoltage lockout (UVLO), and
overtemperature protection (OTP).
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 programmable protection 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
monitoring and system test functions.
The ADP1046 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
VS1
GATE
VS3+
VS3–
SHAREo
SHAREi
DRIVER
iCoupler
DRIVER
VS2
DRIVER
DC
INPUT
LOAD
MICROCONTROLLER
CS2– CS2+ PGND
VDD
ADP1046
Figure 1.


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