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dc2023afa

DEMO MANUAL DC2023A

Description

16-Channel Power Supply

System Featuring the LTM2987

Power System Manager

TheDC2023AisademonstrationsystemfortheLTM®2987

with EEPROM. The LTM2987 monitors and controls 16

power supply rails. The DC2023A demonstrates the abil-

ity of the LTM2987 to sequence, trim, margin, supervise,

monitor, and log faults for 16 power supply rails. Each

power supply channel’s output voltage is monitored and

the LTM2987 monitors its own internal die temperature.

The DC2023A is a single circuit board that contains sixteen

independentpowersupplyrails.Theboardemployssixteen

configuredtobecontrolledbytheLTM2987.TheLTM2987

contains two LTC2977 devices. This board provides a

sophisticated 16-channel digitally programmable power

supply system. The rail voltages are programmable within

the trim range shown in the Performance Summary.

This demonstration system is supported by the

LTpowerPlay™graphicaluserinterface(GUI)thatenables

complete control of all the features of the LTM2987. To-

gether,theLTpowerPlaysoftwareandDC2023Ahardware

system create a powerful development environment for

designing and testing LTM2987 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 LTM2987. Telemetry allows easy access and

decoding of the fault log created by the LTM2987. The

board comes pre-programmed with the EEPROM values

appropriate for the sixteen power supplies used on the

DC2023A. Just plug and play!

Multiple DC2023A board sets can be cascaded together

to form a high channel count power supply (see Multi-

Board Arrays). This cascaded configuration demonstrates

features of the LTM2987 which enable timing and fault

information to be shared across multiple ICs. The user can

L

, LT, LTC, LTM, Linear Technology, the Linear logo and µModule are registered trademarks

and PowerPlay is a trademark of Linear Technology Corporation. All other trademarks are the

property of their respective owners.

configure up to eight DC2023A boards, thereby control-

ling up to 128 separate power supply rails. Larger arrays

base address or bus segmentation.

The DC2023A demo board can be powered by an external

power supply, such as a +12VDC supply. Communication

with the software is provided through the DC1613 USB-to-

of items which can be obtained from the LTC website or

LTC Field Sales.

• LTpowerPlay Software

DC2023A Features

• Sequence, Trim, Margin, and Supervise Sixteen Power

Supplies

• Manage Faults, Monitor Telemetry, and Create Fault

Logs

• PMBus Compliant Command Set

• Supported by LTpowerPlay GUI

• Margin or Trim Supplies to 0.25% Accuracy

• Fast OV/UV Supervisors Per Channel

• Supports Multi-Channel Fault Management

• Automatic Fault Logging to Internal EEPROM

• Operates Autonomously without Additional Software

• 16-Channel Time-Based Output Sequencer

• IntegratedDecouplingCapacitorsandPull-UpResistors

• Powered from 6V to 14VDC

• Available in 144-Lead 15mm

× 15mm BGA

Design files for this circuit board are available at

http://www.linear.com/demo