Features and Benefits
- Complete supervisory and sequencing solution for up to 17 supplies
- Expandable to 257 supplies with additional ADM1266 ICs connected to the 2-wire interdevice bus
- Fully programmable sequencing engine
- 17 supply fault detectors enable real time supervision of supplies
- 0.4 V to 15 V on VH1 to VH4 (VHx)
- 0.4 V to 5 V on VP1 to VP13 (VPx)
- Device powered by the higher of VH1 and VH2 inputs for improved operating redundancy
- 12-bit ADC for readback of all supervised voltages
- Black box nonvolatile fault recording
- 16 programmable driver input/outputs (PDIOs)
- 9 GPIOs
- 9 voltage output 8-bit DACs allow voltage margining adjustment via dc-to-dc converter trim/feedback node
- Main and backup memory
- Industry standard PMBus interface compliant
- Available in a 9 mm × 9 mm, 64-lead package
The ADM1266 Super Sequencer® is a configurable supervisory/ sequencing device that offers a single-chip solution for supply monitoring and sequencing in systems with up to 17 supplies. For systems with more supplies (up to 257), the operation of up to 16 ADM1266 devices can be synchronized through a proprietary 2-wire interface (interdevice bus).
The sequencing engine (SE) monitors the supply fault detectors (SFDs), PDIOs, general-purpose inputs/outputs (GPIOs), and timers, and controls the PDIOs and GPIOs to sequence the supplies up and down as required. The logical core of the device is an ARM Cortex M3 microcontroller. The firmware is supplied by Analog Devices, Inc., and all configuration is performed through an intuitive graphic user interface (GUI).
Additionally, the ADM1266 integrates an analog-to-digital converter (ADC) and voltage output digital-to-analog converters (DACs) that can be used to adjust either the feedback node or reference of a dc-to-dc converter to implement a closed-loop, autonomous, margining system.
A block of nonvolatile EEPROM is available to record voltage, time, and fault information when instructed to by the sequencing engine configuration.
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
The ADM1266-EVALZ is a demonstration system for the ADM1266 16-channel I2C/SMBus/PMBus Super Sequencer. The ADM1266 monitors and controls 16 power supply rails. The ADM1266-EVALZ demonstrates the ability of the ADM1266 to sequence, trim, margin, supervise, monitor, and log faults for sixteen power supply rails. Each power supply channel’s output voltage is monitored.
The ADM1266-EVALZ is a single circuit board that contains fourteen ADP1710 150mA linear regulators and two ADP7102 300mA Linear regulators, which are configured to be controlled by the ADM1266. This board provides a sophisticated 16-channel digitally programmable power supply system.
This demonstration system is supported by the ADI Power Studio™ graphical user interface (GUI) that enables complete control of all the features of the ADM1266. Together, the ADI Power Studio software and ADM1266-EVALZ hardware system create a powerful development environment for designing and testing ADM1266 configuration settings. These settings can be stored in the device’s internal EEPROM or in a file. This file can later be used to order pre-programmed devices or to program devices in a production environment. The software displays all of the configuration settings and real time measurements from the ADM1266. Telemetry allows easy access and decoding of the fault log created by the ADM1266. The board comes pre-programmed with the EEPROM values appropriate for the sixteen power supplies used on the ADM1266-EVALZ.
Multiple ADM1266-EVALZ boards can be cascaded together to form a high channel count power supply (see Multi-Board Arrays). This cascaded configuration demonstrates features of the ADM1266 which enable sequencing and fault information to be shared across multiple ICs. The user can configure up to sixteen ADM1266-EVALZ boards thereby controlling up to 256 separate power supply rails. Larger arrays of ADM1266s are supported through programmable I2C base address. The ADM1266-EVALZ demo board can be powered by an external power supply, such as a +12VDC supply. Communication with the software is provided through the EVAL-ADP-I2C-USB.
Features & Benefits
- Sequence and Supervise Sixteen Power Supplies
- Trim and Margin Nine Power Supplies
- Automatic Fault Logging to internal EEPROM
- Operates Autonomously without additional software
- PMBus interface supports all device related software
- Interchip bus simplifies multidevice cascading and sequencing operation
- 16 voltages reference for input emulation
- Switches and LEDs for signal emulation using GPIOs
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.