Programmable sequencer simplies power control

August 06, 2018 // By Nick Flaherty
Analog Devices has launched a programmable device for monitoring, sequencing, and margining up to 17 power supply lines.

The Power by Linear ADM1266 Super Sequencer includes a built-in sequencing engine that monitors each supply fault detector, general purpose inputs/outputs, and timers to turn the supplies on and off in a user-determined sequence. All the configuration is performed through ADI's Power Studio GUI, reducing design time for complex power systems on FPGA, ASIC, and processor boards in network routers and switches, servers and data storage systems.

The ADM1266 integrates an analogue-to-digital converter (ADC) and nine voltage output digital-to-analog converters (DACs) that adjust the feedback node or reference of a DC-DC converter to implement a closed-loop, autonomous margining system. A nonvolatile EEPROM records voltage, time, and fault information when instructed by the sequencing engine configuration, speeding fault debug.

The Power Studio software has a configurable state machine for complex sequencing requirements and has debugging features like breakpoints and black box, along with the software setup wizards, that reduce development and debug time from days to a matter of hours.

For larger rail counts, a proprietary 2-wire interdevice bus synchronizes the operation of 16 ADM1266s. This interdevice bus ensures they perform like a single device, providing for an intuitive design process. By handling all complexity, the software fashions a seamless design experience from 17 rails to 257 rails.

The controller is specified over −40ºC to 85ºC and is offered in a 64-pin 9mm x 9mm LFCSP package. Device samples and evaluation circuit boards are available now with pricing starting at $11.99.

www.analog.com/ADM1266


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