Linear Technology LTC2933 Manual

Description
The DC1633B is a demonstration system that showcases
the LTC 2933, a 6-channel I
®
with EEPROM. The LTC2933 simultaneously monitors up
to six power supply voltages and detects under/overvolt-
age conditions. In addition the LTC2933 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 DC1633B is a single circuit board that contains the
LTC2933 and support circuitry to provide the ability to dem-
onstrate features and capabilities of the LTC2933 without
the need for external power supplies. The DC1633B 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 enables
complete control of all the features of the device. Together,
the LTpowerPlay software and DC1633B hardware system
create a powerful development environment for designing
and testing configuration settings of the LTC2933. 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 LTC2933. The board comes
pre-programmed with the EEPROM values appropriate
for the six power supply rails on the DC1633B. Just plug
and play!
The LTC2933 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 LTC2933 and also reads the GPI and GPIO
2
C/SMBus voltage supervisor
DEMO MANUAL DC1633B
Programmable Hex
Voltage Supervisor Featuring
the LTC2933 with EEPROM
voltages. The DAC drives five programmable voltages
that are used to emulate the user's system rails. The extra
support circuitry allows the user to evaluate the LTC2933
quickly and without the need for external voltmeters or
power supplies.
The DC1633B 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-
2
I C/SMBus/PMBus controller. The following is a checklist
of items which can be obtained from the LTC website or
LTC Field Sales.
2
• USB-to-I C/SMBus/PMBus Controller (DC1613)
• LTpowerPlay Software
DC1633B Features
• Supervise Six Power Supplies
• Powered from USB Dongle, Power Jack, or V1-V4
2
• I C Adjustable OV/UV Trip Points
• Guaranteed Threshold Accuracy ±1%
2
• I C/SMBus Serial Interface
• Internal EEPROM
• 256 Programmable Thresholds per Channel
• Up to Three Range Settings per Channel
• Two General Purpose Inputs
• Three General Purpose Inputs/Outputs
• Programmable Output Delays
• Autonomous Operation without Additional Software
• Supported by LTpowerPlay GUI
• LTC2933 Available in 16-Lead DFN and SSOP Packages
Design files for this circuit board are available at
http://www.linear.com/demo/DC1633B
L, LT, LTC, LTM, Linear Technology, the Linear logo and PolyPhase are registered trademarks
and LTpowerPlay is a trademark of Linear Technology Corporation. All other trademarks are
the property of their respective owners. Protected by Patents including 7382303, 7420359,
7940091.
dc1633bf
1