Linear Technology Analog Devices DC1890A Demo Manual
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Linear Technology Analog Devices DC1890A Demo Manual

Ltc3883euh programming board for single phase step-down dc/dc controller with digital power management
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Table of Contents

Programming Board for Single Phase Step-Down
DC/DC Controller with Digital Power Management
Description
Demonstration circuit 1890A contains the circuitry needed
to program and verify the EEPROM of the
LTC3883-1. That is its only purpose. The DC1890A is
shipped with a LTC3883 installed in the clamshell style
programming socket. The EEPROM contains the factory
default configuration. The LTpowerPlay™ .proj file that
corresponds to the factory default can be found in the GUI.
In order to properly verify the contents of the EEPROM,
download and install the LTpowerPlay software (GUI). The
software can be downloaded from:
http://www.linear.com/ltpowerplay
You also need a Linear Technology USB to I
PMBUS Controller, DC1613A or DC1427A.
DEMO SYSTEM REQUIRED HARDWARE
Windows PC
n
2
USB to I
C/SMBUS/PMBUS Controller, DC1613A or
n
DC1427A
DC1890A
n
DEMO SYSTEM REQUIRED SOFTWARE
LTpowerPlay
n
USB CABLE
LTC
3883
and
®
2
C/SMBUS/
USB to
2
I
C/PMBus Controller
DC1613A or DC1427A
Figure 1. LTC3883 Programming Setup Using DC1890A
DEMO MANUAL DC1890A
LTC3883 FEATURES
2
PMBus/I
C compliant serial interface
n
Telemetry readback includes V
n
perature and faults
Programmable voltage, current limit, digital soft-start/
n
stop, sequencing, margining, OV/UV/OC and frequency
synchronization (250kHz to 1MHz)
±0.5% output voltage accuracy over temperature
n
Integrated 16-bit ADC
n
Integrated high side current sense amplifier
n
Internal EEPROM and fault logging
n
Integrated powerful N-channel MOSFET gate drivers
n
Wide V
range: 4.5V to 24V
n
IN
V
range: 0.5V to 5.4V
n
OUT
Analog current mode control loop
n
Accurate PolyPhase
®
n
Auto calibration of inductor DCR
n
Available in a 32-pin (5mm × 5mm) QFN package
n
Design files for this circuit board are available at
http://www.linear.com/demo/DC1890A
L, LT, LTC, LTM, Linear Technology, PolyPhase and the Linear logo are registered trademarks
and LTpowerPlay is a trademark of Analog Devices, Inc. All other trademarks are the property of
their respective owners.
RIBBON CABLE
LTC3883EUH
, I
, V
, I
IN
IN
OUT
OUT
current sharing
LTC3883
PROGRAMMING
BOARD DC1890A
, tem-
dc1890a F01
dc1890afa
1

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Summary of Contents for Linear Technology Analog Devices DC1890A

  • Page 1 Design files for this circuit board are available at LTpowerPlay http://www.linear.com/demo/DC1890A L, LT, LTC, LTM, Linear Technology, PolyPhase and the Linear logo are registered trademarks and LTpowerPlay is a trademark of Analog Devices, Inc. All other trademarks are the property of their respective owners.

  • Page 2: Quick Start Procedure

    DEMO MANUAL DC1890A Quick start proceDure Demonstration circuit 1890A makes it easy to program 5. If you have a DC1427A, plug the ribbon cable into J1. and verify the EEPROM contents of the LTC3883. See Figure 3. If you have a DC1613A, plug the ribbon cable into J2.
  • Page 3 DEMO MANUAL DC1890A Quick start proceDure Figure 2. Open Shell. Verify IC Installed Figure 3. DC1427A Ribbon Cable Installation Figure 4. DC1613A Ribbon Cable Installation dc1890afa...
  • Page 4 From the LTpowerPlay, load the factory defaults project before removing or inserting a LTC3883 into the pro- file. This file is located at: gramming socket. C:\Program Files\Linear Technology\LTpowerPlay\ project files\democricuits\LTC3883_datasheet_defaults. WHAT YOU CAN DO WITH THE DC1890A proj 1. Compare the contents of the EEPROM in the LTC3883 b.

  • Page 5: Parts List

    LORANGER, 03714 411 6218D 6.04mm × 2.03mm, 0.50mm IC, MEMORY, EEPROM, 2Kb (256x8), TSSOP-8, MICROCHIP, 24LC025-I/ST 400kHz IC, OVERVOLTAGE/OVERCURRENT PROTEC, LINEAR TECHNOLOGY, LTC4361CTS8-2#PBF|LINEAR TSOT-23 8-PIN TECHNOLOGY, LTC4361CTS8-2#TRPBF Additional Demo Board Circuit Components R32, R38 RES, OPTION, 0805 CAP, 0603, OPTION...
  • Page 6 DEMO MANUAL DC1890A schematic Diagram dc1890afa...

  • Page 7: Schematic Diagram

    Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
  • Page 8 Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions: This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods.

This manual is also suitable for:

Analog devices dc2052aAnalog devices dc1778b-a

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