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ADP1055 Dataheets PDF



Part Number ADP1055
Manufacturers Analog Devices
Logo Analog Devices
Description Digital Controller
Datasheet ADP1055 DatasheetADP1055 Datasheet (PDF)

Data Sheet Digital Controller for Power Supply Applications with PMBus Interface ADP1055 FEATURES −40°C to +125°C operation PMBus Revision 1.2 compliant with PEC and extended manufacturer specific commands 32-bit password protection with command masking 64 address selections (16 base addresses, expandable to 64) 6 PWM control signals, 625 ps resolution Frequency from 48 kHz to 1 MHz Duty cycle double update rate Digital control loop (PID + additional pole or zero configurability) Programmable .

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Data Sheet Digital Controller for Power Supply Applications with PMBus Interface ADP1055 FEATURES −40°C to +125°C operation PMBus Revision 1.2 compliant with PEC and extended manufacturer specific commands 32-bit password protection with command masking 64 address selections (16 base addresses, expandable to 64) 6 PWM control signals, 625 ps resolution Frequency from 48 kHz to 1 MHz Duty cycle double update rate Digital control loop (PID + additional pole or zero configurability) Programmable loop filters (CCM, DCM, low/normal temperature) Fast line voltage feedforward Adaptive dead time compensation for improved efficiency Remote voltage sense Redundant programmable OVP Current sense Primary side cycle-by-cycle fast protection Secondary side cycle-by-cycle fast overcurrent protection Secondary side averaged reverse current protection using diode emulation mode with fixed debounce Synchronous rectifier control for improved efficiency in light load mode Nonlinear gain for faster transient response from DCM to CCM Frequency synchronization Soft start and soft stop functionality Average and peak constant current mode External PN junction temperature sensing 4 GPIOs (2 GPIOs configurable as active clamp snubber PWMs) Extended black box data recorder for fault recording User trimming on input and output voltages and currents Digital current sharing APPLICATIONS Isolated dc-to-dc power supplies and modules Redundant power supply systems GENERAL DESCRIPTION The ADP1055 is a flexible, feature-rich digital secondary side controller that targets ac-to-dc and isolated dc-to-dc secondary side applications. The ADP1055 is optimized for minimal component count, maximum flexibility, and minimum design time. Features include differential remote voltage sense, primary and secondary side current sense, pulse-width modulation (PWM) generation, frequency synchronization, redundant OVP, and current sharing. The control loop digital filter and compensation terms are integrated and can be programmed over the PMBus™ interface. Programmable protection features include overcurrent (OCP), overvoltage (OVP) limiting, undervoltage lockout (UVLO), and external overtemperature (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 PMBus provides access to the many monitoring and system test functions. The ADP1055 is available in a 32-lead LFCSP and operates from a single 3.3 V supply. TYPICAL APPLICATION DIAGRAM DC INPUT VOUT LOAD DRIVER iCoupler ® DRIVER SR1 SR2 CS1 OUTA OUTB OUTC OUTD VFF CS2– CS2+ ADP1055 RES ADD JTD JRTN GPIO1 TO GPIO4 CTRL SMBALRT OVP SDA SCL VS+ VS– ISHARE SYNC NC VCORE VDD AGND DGND VDD 12004-001 Figure 1. PMBus Rev. A Document Feedback 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 ©2014–2015 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com ADP1055 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Typical Application Diagram .......................................................... 1 Revision History ............................................................................... 3 Functional Block Diagram .............................................................. 4 Specifications..................................................................................... 5 Absolute Maximum Ratings.......................................................... 10 Thermal Resistance .................................................................... 10 Soldering...................................................................................... 10 ESD Caution................................................................................ 10 Pin Configuration and Function Descriptions........................... 11 Typical Performance Characteristics ........................................... 13 Controller Architecture ..................................


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