Super Sequencer with Inter-chip ‘Cascade' Bus and Nonvolatile Fault Recording Supports 4 Devices
The ADM1260 Super Sequencer® is a configurable supervisory / sequencing device that offers a single-chip solution for supply monitoring and sequencing in multiple supply systems.
A high speed interchip bus (ICB) allows multiple devices to be easily linked together. It is possible to create a system capable of sequencing up to 40 supplies and monitoring up to 37 supplies. Using the ADI Power Studio™ software, the operation of the ICB is transparent to the user, making multiple devices appear to operate as a single virtual sequencer.
In addition to these functions, the ADM1260 integrates a 12-bit analog-to-digital converter (ADC) and six 8-bit voltage output digital-to-analog converters (DACs). Use the ADC and the DACs to implement a closed-loop margining system that enables supply adjustment by altering either the feedback node or the reference of a dc-to-dc converter using the DAC outputs.
Supply margining can be performed with a minimum of external components. The margining loop can be used for in-circuit testing of a board during production (for example, to verify board functionality at −5% of nominal supplies), or it can be used dynamically to accurately control the output voltage of a dc-to-dc converter.
The device also provides up to 10 programmable inputs for monitoring undervoltage faults, overvoltage faults, or out of window faults on up to 10 supplies. In addition, 10 programmable outputs can be used as logic enables. Six of these programmableoutputs can also provide an output of up to 12 V for driving the gate of an N-FET that can be placed in the path of a supply.
The logical core of the device is a sequencing engine (SE). This state machine-based construction provides up to 61 different states. This design enables very flexible sequencing of the outputs, based on the condition of the inputs.
A block of nonvolatile EEPROM is available that can be used to store user defined information and can also be used to hold a number of fault records that are written by the sequencing engine, as defined by the user when a particular fault or sequence occurs.
The device is controlled via configuration data that can be programmed into an EEPROM. The entire configuration can be programmed using an intuitive graphical user interface (GUI)-based software package provided by Analog Devices, Inc., the ADI Power Studio software.Applications
- Central office systems
- Multivoltage system line cards
- Digital signal processor (DSP)/field programmable gate array (FPGA) supply sequencing
- In-circuit testing of margined supplies
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.
The EVAL-ADM1260CSZ is a compact, full-feature evaluation board for the ADM1260 that comes in the EVAL-ADM1260EBZ evaluation kit.
Ten programmable driver outputs, Pins PDO1 to PDO10 (PDOx), and five dual-function inputs, Pins VX1 to VX5 (VXx), along with five selectable input attenuators that allow supervision of supplies, Pins VP1 to VP4 (VPx), and Pin VH give users flexibility and allows a wide range of application setups.
Ten LEDs give users direct visual indication on variations in the input board status. There is one LED to indicate the board power supply status.
The switches on the board allow the user to change the device address easily.
The evaluation kit supports I2C communication, allowing users to communicate with the ADM1260 devices. The evaluation kit also supports cascade setup so multiple evaluation boards can connect and share the same I2C bus.
The EVAL-ADM1260CSZ is fully compatible with the ADI Power Studio™ software, to download this software, go to the ADM1260 product page.
Users need a USB-SDP-CABLEZ dongle to use the evaluation software tools. Only one dongle is required in a multiboard cascade setup. One device socket is included in each kit. The ADM1260 data sheet provides additional information and must be consulted when using the evaluation board.
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.
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.