ADP1048DC1-EVALZ Analog Devices

Digital Power Factor Correction Controller with Accurate AC Power Metering Data Sheet ADP1047/ADP1048 FEATURES GENERAL DESCRIPTION Flexible digital power factor correction (PFC) controller The ADP1047/ADP1048 are digital power factor correction Single phase operation (ADP1047) interleaved and (PFC) controllers that provide accurate input power metering bridgeless operation (ADP1048) capability and inrush current control for ac/dc systems. The True rms ac power metering ADP1047 is designed for single phase PFC applications the Enhanced dynamic response ADP1048 is designed especially for interleaved and bridgeless Optimized light load efficiency performance PFC applications. Output voltage adjustment The digital PFC function is based on a conventional boost PFC Frequency reduction with multiplication of the output voltage feedback combined with Inrush current control the input current and voltage to provide optimum harmonic Switching frequency spread spectrum for improved EMI correction and power factor for ac/dc systems. All signals are External frequency synchronization converted into the digital domain to provide maximum flexibility PMBus compliant all key parameters can be reported and adjusted via the PMBus Programmable ac line fault detection and protection interface. The ADP1047/ADP1048 allow users to optimize system Programmable output fault detection and protection performance, maximize efficiency across the load range, and Extensive fault protection for high reliability systems reduce design time to market. Frequency range from 30 kHz to 400 kHz The ADP1047/ADP1048 provide accurate rms measurement 8 kB EEPROM of input voltage, current, and power. This information can be Programming via easy-to-use graphical user interface (GUI) reported to the microcontroller of the power supply via the APPLICATIONS PMBus interface. AC/DC power supplies for applications Computing server and storage Network and communication infrastructure Industrial and medical TYPICAL APPLICATIONS CIRCUIT V V REC OUT RELAY BULK CAPACITOR AC INPUT 3.3V 1 AGND VDD 24 2 23 VAC RES 3 VFB RTD 22 4 21 OVP ADD 5 PGND SDA 20 PMBus 6 19 ILIM SCL 7 NC SYNC 18 8 CS INRUSH 17 9 CS+ PGOOD 16 10 15 DGND AC OK 11 PSON PWM2 14 12 VCORE 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Fax: 781.461.3113 2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 09696-101ADP1047/ADP1048 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Advanced Features ......................................................................... 30 Applications ....................................................................................... 1 Frequency Dithering (Spread Spectrum) ................................ 30 General Description ......................................................................... 1 PWM Frequency Synchronization ........................................... 30 Typical Applications Circuit ............................................................ 1 Smart Output Voltage (Load Line) .......................................... 30 Revision History ............................................................................... 4 Smart Switching Frequency ...................................................... 31 Specif icat ions ..................................................................................... 6 Current Loop Filter for Light Load .......................................... 31 Absolute Maximum Ratings ............................................................ 9 Phase Shedding (ADP1048 Only) ............................................ 31 Thermal Resistance ...................................................................... 9 Current Loop Feedforward ....................................................... 31 ESD Caution .................................................................................. 9 Bridgeless Boost Operation (ADP1048 Only)........................ 32 Pin Configurations and Function Descriptions ......................... 10 Power Supply System Calibration and Trim ............................... 33 Functional Block Diagrams ........................................................... 11 Output Voltage (VFB) Calibration and Trim ......................... 33 Controller Architecture ................................................................. 12 Input Voltage (VAC) Gain and Offset Trim ............................ 33 Current Sense .............................................................................. 12 Current Sense Gain and Offset Trim ....................................... 33 RMS Input Overcurrent Protection ......................................... 12 Input Power Gain and Offset Trim .......................................... 33 Fast Overcurrent Protection (ILIM Pin) ................................. 12 PMBus Digital Communication ................................................... 34 Current Balancing (IBAL Pin, ADP1048 Only) ..................... 14 Features ........................................................................................ 34 Voltage Sense ............................................................................... 14 Overview ..................................................................................... 34 Overvoltage Protection .............................................................. 15 PMBus Address .......................................................................... 34 Power Factor Correction Control Loop ...................................... 17 Data Transfer............................................................................... 35 Digital Compensation Filters .................................................... 17 General Call Support ................................................................. 36 Pulse-Width Modulation ........................................................... 18 Fast Mode .................................................................................... 36 Duty Cycle Minimum/Maximum Limits ................................ 18 Fault Conditions ......................................................................... 36 Auxiliary PWM Output (ADP1047 Only) .............................. 18 Timeout Condition .................................................................... 36 Switching Frequency Programming ........................................ 19 Data Transmission Faults .......................................................... 37 Line Fault Protections and Soft Start Sequencing ...................... 20 Data Content Faults ................................................................... 37 PSON Operation ........................................................................ 20 EEPROM ......................................................................................... 38 AC Line Detection ...................................................................... 20 Overview ..................................................................................... 38 Soft Start Procedure ................................................................... 22 Page Erase Operation ................................................................. 38 Line Fault Protections ................................................................ 22 Read Operation (Byte Read and Block Read) ........................ 38 Advanced Input Power Metering.................................................. 24 Write Operation (Byte Write and Block Write) ..................... 39 Power Supply System and Fault Monitoring ............................... 25 EEPROM Password .................................................................... 39 Flag Conventions ........................................................................ 25 Downloading EEPROM Settings to Internal Registers ......... 39 Manufacturer-Specific Flags ..................................................... 25 Saving Register Settings into EEPROM .................................. 40 Standard PMBus Flags ............................................................... 26 EEPROM CRC Checksum ........................................................ 40 PMBus Fault Flag Response ...................................................... 27 Software GUI .................................................................................. 41 Manufacturer-Specific Flag Response ..................................... 28 Standard PMBus Commands Supported by the ADP1047/ADP1048 ....................................................................... 42 Monitoring Functions ................................................................ 29 Manufacturer-Specific PMBus Commands ................................ 43 First Error Fault .......................................................................... 29 Detailed Register Descriptions ..................................................... 45 Overtemperature Protection (OTP) ........................................ 29 OPERATION Register ............................................................... 45 AC OK and PGOOD Signals 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