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Analog Devices - (ADP1047 / ADP1048) Digital Power Factor Correction Controller

Numéro de référence ADP1047
Description (ADP1047 / ADP1048) Digital Power Factor Correction Controller
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Data Sheet
Digital Power Factor Correction Controller
with Accurate AC Power Metering
ADP1047/ADP1048
FEATURES
Flexible digital power factor correction (PFC) controller
Single phase operation (ADP1047); interleaved and
bridgeless operation (ADP1048)
True rms ac power metering
Enhanced dynamic response
Optimized light load efficiency performance
Output voltage adjustment
Frequency reduction
Inrush current control
Switching frequency spread spectrum for improved EMI
External frequency synchronization
PMBus compliant
Programmable ac line fault detection and protection
Programmable output fault detection and protection
Extensive fault protection for high reliability systems
Frequency range from 30 kHz to 400 kHz
8 kB EEPROM
Programming via easy-to-use graphical user interface (GUI)
APPLICATIONS
AC/DC power supplies for applications
Computing server and storage
Network and communication infrastructure
Industrial and medical
GENERAL DESCRIPTION
The ADP1047/ADP1048 are digital power factor correction
(PFC) controllers that provide accurate input power metering
capability and inrush current control for ac/dc systems. The
ADP1047 is designed for single phase PFC applications; the
ADP1048 is designed especially for interleaved and bridgeless
PFC applications.
The digital PFC function is based on a conventional boost PFC
with multiplication of the output voltage feedback combined with
the input current and voltage to provide optimum harmonic
correction and power factor for ac/dc systems. All signals are
converted into the digital domain to provide maximum flexibility;
all key parameters can be reported and adjusted via the PMBus™
interface. The ADP1047/ADP1048 allow users to optimize system
performance, maximize efficiency across the load range, and
reduce design time to market.
The ADP1047/ADP1048 provide accurate rms measurement
of input voltage, current, and power. This information can be
reported to the microcontroller of the power supply via the
PMBus interface.
TYPICAL APPLICATIONS CIRCUIT
VREC
RELAY
VOUT
AC
INPUT
BULK
CAPACITOR
3.3V
1 AGND
2 VAC
3 VFB
4 OVP
5 PGND
6 ILIM
7 NC
8 CS–
9 CS+
10 DGND
11 PSON
12 VCORE
VDD 24
RES 23
RTD 22
ADD 21
SDA 20
PMBus
SCL 19
SYNC 18
INRUSH 17
PGOOD 16
AC_OK 15
PWM2 14
PWM 13
ADP1047
Figure 1.
Rev. 0
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.
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
©2011 Analog Devices, Inc. All rights reserved.
Free Datasheet http://www.datasheet4u.com/

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