1
dc1605bf
DEMO MANUAL DC1605B
Description
Programmable Hex
Voltage Supervisor Featuring
the LTC2936 with EEPROM
The DC1605B is a demonstration system that showcases
the
LTC
®
2936
, a 6-channel I
2
C/SMBus voltage supervisor
with EEPROM. The LTC2936 simultaneously monitors up
to six power supply voltages and detects undervoltage and
overvoltage conditions. In addition the LTC2936 monitors
two GPI pins and is able to drive three GPIO pins to indicate
OV, UV, system reset, system alert, or other control signal.
The DC1605B is a single circuit board that contains the
LTC2936 and support circuitry to provide the ability to dem-
onstrate features and capabilities of the LTC2936 without
the need for external power supplies. The DC1605B demo
board provides an accurate voltage supervision of six chan-
nels and offers over/undervoltage thresholds in various
ranges and increments that are digitally programmable.
This demonstration system is supported by the
LTpowerPlay™ graphical user interface (GUI) which en-
ables complete control of all the features of the device.
Together, the LTpowerPlay software and DC1605B hard-
ware system create a powerful development environment
for designing and testing configuration settings of the
LTC2936. 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 system supervisor and peripheral ICs. Telemetry
allows easy access and decoding of the fault log created
by the LTC2936. The board comes pre-programmed with
the EEPROM values appropriate for the six power supply
rails on the DC1605B. Just plug and play!
The LTC2936 chip is mounted on the topside of the board
with support ADC and DAC circuitry on the back.
The ADC provides voltage readings for all six voltage
supervisor inputs on the LTC2936 and also reads the GPI
and GPIO voltages. The DAC drives six programmable
voltages that are used to emulate the user’s system rails.
The extra support circuitry allows the user to evaluate
L
, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
LTpowerPlay is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
the LTC2936 quickly and without the need for external
voltmeters or power supplies.
The DC1605B 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-
I
2
C/SMBus/PMBus Controller. The following is a checklist
of items which can be obtained from the LTC website or
LTC Field Sales.
n
USB-to-I
2
C/SMBus/PMBus Controller (DC1613)
n
LTpowerPlay Software
DC1605B Features
n
Supervise Six Power Supplies
n
Powered from USB Dongle, Power Jack, or V
IN
n
I
2
C Adjustable OV/UV Trip Points
n
Guaranteed Threshold Accuracy: ±1%
n
I
2
C/SMBus Serial Interface
n
Internal EEPROM
n
Six Comparator Outputs
n
256 Programmable Thresholds per Channel
n
Up to Three Range Settings per Channel
n
Two General Purpose Inputs
n
Three General Purpose Inputs/Outputs
n
Programmable Output Delays
n
Autonomous Operation without Additional Software
n
Supported by LTpowerPlay GUI
n
LTC2936 Available in 24-Lead QFN and SSOP Packages
Design files for this circuit board are available at
http://www.linear.com/demo/DC1605B
