ADM1062ASUZ Analog Devices

Super Sequencer with Margining Control and Temperature Monitoring Data Sheet ADM1062 FEATURES FUNCTIONAL BLOCK DIAGRAM DP DN REFIN REFOUT REFGND SDA SCL A1 A0 Complete supervisory and sequencing solution for up to 10 supplies ADM1062 10 supply fault detectors enable supervision of supplies to VREF SMBus TEMP INTERNAL INTERFACE SENSOR DIODE <0.5% accuracy at all voltages at 25C <1.0% accuracy across all voltages and temperatures 5 selectable input attenuators allow supervision of supplies to 12-BIT EEPROM SAR ADC 14.4 V on VH CLOSED-LOOP 6 V on VP1 to VP4 (VPx) MARGINING SYSTEM VX1 PDO1 5 dual-function inputs, VX1 to VX5 (VXx) CONFIGURABLE DUAL- OUTPUT PDO2 VX2 FUNCTION High impedance input to supply fault detector with DRIVERS INPUTS PDO3 VX3 PDO4 thresholds between 0.573 V and 1.375 V (LOGIC INPUTS (HV CAPABLE OF VX4 OR PDO5 DRIVING GATES SFDs) General-purpose logic input OF N-FET) VX5 PDO6 SEQUENCING 10 programmable driver outputs, PDO1 to PDO10 (PDOx) ENGINE VP1 PDO7 CONFIGURABLE Open-collector with external pull-up PROGRAMMABLE OUTPUT VP2 RESET DRIVERS PDO8 Push/pull output, driven to VDDCAP or VPx VP3 GENERATORS (LV CAPABLE PDO9 Open collector with weak pull-up to VDDCAP or VPx VP4 (SFDs) OF DRIVING LOGIC SIGNALS) VH PDO10 Internally charge-pumped high drive for use with external AGND PDOGND N-FET (PDO1 to PDO6 only) VDD V V V V V V OUT OUT OUT OUT OUT OUT VDDCAP ARBITRATOR Sequencing engine (SE) implements state machine control of DAC DAC DAC DAC DAC DAC PDO outputs State changes conditional on input events DAC1 DAC2 DAC3 DAC4 DAC5 DAC6 VCCP GND Enables complex control of boards Figure 1. Power-up and power-down sequence control Fault event handling APPLICATIONS Interrupt generation on warnings Central office systems Watchdog function can be integrated in SE Servers/routers Program software control of sequencing through SMBus Multivoltage system line cards Complete voltage margining solution for 6 voltage rails DSP/FPGA supply sequencing 6 voltage output, 8-bit DACs (0.300 V to 1.551 V) allow voltage In-circuit testing of margined supplies adjustment via dc-to-dc converter trim/feedback node 12-bit ADC for readback of all supervised voltages GENERAL DESCRIPTION Internal and external temperature sensors The ADM1062 Super Sequencer is a configurable supervisory/ Reference input (REFIN) has 2 input options sequencing device that offers a single-chip solution for supply Driven directly from 2.048 V (0.25%) REFOUT pin monitoring and sequencing in multiple-supply systems. In addition More accurate external reference for improved to these functions, the ADM1062 integrates a 12-bit ADC and six ADC performance 8-bit voltage output DACs. These circuits can be used to implement Device powered by the highest of VPx, VH for improved a closed-loop margining system that enables supply adjustment redundancy by altering either the feedback node or the reference of a dc-to-dc User EEPROM: 256 bytes converter using the DAC outputs. Industry-standard 2-wire bus interface (SMBus) For more information about the ADM1062 register map, refer Guaranteed PDO low with VH, VPx = 1.2 V to the AN-698 Application Note. Available in 40-lead, 6 mm 6 mm LFCSP and 48-lead, 7 mm 7 mm TQFP packages Rev. D 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 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 20052015 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. MUX 04433-001ADM1062 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Sequencing Engine Application Example ............................... 20 Functional Block Diagram .............................................................. 1 Fault and Status Reporting ........................................................ 21 Applications ....................................................................................... 1 Voltage Readback............................................................................ 22 General Description ......................................................................... 1 Supply Supervision with the ADC ........................................... 22 Revision History ............................................................................... 3 Supply Margining ........................................................................... 23 Detailed Block Diagram .................................................................. 4 Overview ..................................................................................... 23 Specif icat ions ..................................................................................... 5 Open-Loop Supply Margining ................................................. 23 Absolute Maximum Ratings ............................................................ 8 Closed-Loop Supply Margining ............................................... 23 Thermal Resistance ...................................................................... 8 Writing to the DACs .................................................................. 24 ESD Caution .................................................................................. 8 Choosing the Size of the Attenuation Resistor ....................... 24 Pin Configurations and Function Descriptions ........................... 9 DAC Limiting and Other Safety Features ............................... 24 Typical Performance Characteristics ........................................... 11 Temperature Measurement System .............................................. 25 Powering the ADM1062 ................................................................ 14 Remote Temperature Measurement ........................................ 25 Slew Rate Consideration ............................................................ 14 Applications Diagram .................................................................... 27 Inputs ................................................................................................ 15 Communicating with the ADM1062 ........................................... 28 Supply Supervision ..................................................................... 15 Configuration Download at Power-Up ................................... 28 Programming the Supply Fault Detectors ............................... 15 Updating the Configuration ..................................................... 28 Input Comparator Hysteresis .................................................... 15 Updating the Sequencing Engine ............................................. 29 Input Glitch Filtering ................................................................. 16 Internal Registers ........................................................................ 29 Supply Supervision with VXx Inputs ....................................... 16 EEPROM ..................................................................................... 29 VXx Pins as Digital Inputs ........................................................ 17 Serial Bus Interface ..................................................................... 29 Outputs ............................................................................................ 18 SMBus Protocols for RAM and EEPROM .............................. 32 Supply Sequencing Through Configurable Output Drivers ....... 18 Write Operations ........................................................................ 32 Default Output Configuration .................................................. 18 Read Operations ......................................................................... 34 Sequencing Engine ......................................................................... 19 Outline Dimensions ....................................................................... 35 O ver vie w ...................................................................................... 19 Ordering Guide .......................................................................... 35 Warnings ...................................................................................... 19 SMBus Jump (Unconditional Jump) ........................................ 19 Rev. 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