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Linear Technology DC2277A Demo Manual
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Linear Technology DC2277A Demo Manual

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Description
Demonstration circuit 2277A contains the circuitry needed
to program and verify the EEPROM of the
UKG package and that is its only purpose. The DC2277A
is shipped with a LTC3886 installed in the clamshell style
programming socket and its 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
DC2277A
n
DEMO SYSTEM REQUIRED SOFTWARE
LTpowerPlay™
n
USB CABLE
Programming Board for Dual Output
Step Down DC/DC Controller with
Digital Power System Management
LTC
3886
in the
®
2
C/SMBus/
USB to
2
I
C/PMBus Dongle
DC1613A or DC1427A
Figure 1. LTC3886 Programming Setup Using the DC2277A
DEMO MANUAL DC2277A
LTC3886 UKG Package
LTC3886 FEATURES
2
PMBus/I
C compliant serial interface
n
Telemetry read-back includes V
n
temperature and faults
Programmable voltage, current limit, digital soft-start/
n
stop, sequencing, margining, control loop compensa-
tion, OV/UV and frequency synchronization (100kHz to
750kHz)
±0.5% output voltage accuracy over temperature
n
Integrated 16-bit ADC and 12-bit DAC
n
Internal EEPROM and fault logging
n
Integrated powerful N-channel MOSFET gate drivers
n
Wide V
range: 4.5V to 60V
n
IN
V
range: 0.5V to 13.8V
n
OUT
Supports power-up into pre-biased load
n
Analog current mode control loop
n
Accurate PolyPhase
current sharing for up to 6 phases
®
n
Available in a 52-lead (7mm × 8mm) QFN package
n
Design files for this circuit board are available at
http://www.linear.com/demo/DC2277A
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.
RIBBON CABLE
, I
, V
, I
IN
IN
OUT
OUT
LTC3886
PROGRAMMING
BOARD DC2277A
dc2277a F01
DC2277af
1
,

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Summary of Contents for Linear Technology DC2277A

  • Page 1 Design files for this circuit board are available at http://www.linear.com/demo/DC2277A DEMO SYSTEM REQUIRED SOFTWARE L, LT, LTC, LTM, Linear Technology, the Linear logo and PolyPhase are registered trademarks LTpowerPlay™ and LTpowerPlay is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners.

  • Page 2: Quick Start Procedure

    UKG package. See Figure 3. 1. Make sure jumpers are in the following positions: 6. On your PC, launch LTpowerPlay. LTpowerPlay will identify the DC2277A and launch the appropriate GUI. JUMPER POSITION FUNCTION See Figure 4. Write Protection of LTC3886 NOTE.
  • Page 3 DEMO MANUAL DC2277A Quick start proceDure Figure 3. DC1613A Ribbon Cable Installation DC2277af...
  • Page 4 DEMO MANUAL DC2277A Quick start proceDure POWERING DOWN THE BOARD BETWEEN 3. Verify the EEPROM within the DC2277A contains the PROGRAMMING OPERATIONS factory defaults. Disconnect the USB cable from the DC1427A/DC1613A From the LTpowerPlay interface, load the factory before removing or inserting a LTC3886UKG into the defaults project file.

  • Page 5: Parts List

    DEMO MANUAL DC2277A parts List ITEM REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components C11, C14, C16, C20 CAP., 0.1µF, X7R, 16V, 10%, 0603 NIC, NMC0603X7R104K16TRF CAP., 0.01µF, X7R, 25V, 10%, 0603 AVX, 06033C103KAT2A CAP., 10µF, X5R, 6.3V, 10%, 1206...
  • Page 6 DEMO MANUAL DC2277A schematic Diagram DC2277af...

  • 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.
  • Page 9 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Analog Devices Inc. DC2277A...