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Linear Technology DC1709A Manual
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Linear Technology DC1709A Manual

Programming board for dual-/ two-phase dc/dc controller with digital power management
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Description
Demonstration circuit 1709A contains the circuitry needed
to program and verify the EEPROM within the LTC
and LTC3880-1. That is its only purpose. The DC1709A
is shipped with a LTC3880 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
DC1709A
n
DEMO SYSTEM REQUIRED SOFTWARE
LTpowerPlay
n
Arrow.com.
Downloaded from
Two-Phase DC/DC Controller with
2
C/SMBus/
USB CABLE
2
I
C/PMBus Dongle
DC1613A or DC1427A
Figure 1. LTC3880 Programming Setup Using the DC1709A
DEMO MANUAL DC1709A
Programming Board for Dual-/
Digital Power Management
LTC3880 FEATURES
2
PMBus/I
C compliant serial interface
n
Telemetry readback includes V
3880
®
n
temperature and faults
Programmable voltage, current limit, digital soft-start/
n
stop, sequencing, margining, OV/UV and frequency
synchronization (250kHz to 1MHz)
±0.5% output voltage accuracy over temperature
n
Integrated 16-bit ADC
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 5.5V
n
OUT
Supports power-up into prebiased load
n
Analog current mode control loop
n
Accurate PolyPhase
n
Available in a 40-pin (6mm × 6mm) QFN package
n
Design files for this circuit board are available at
http://www.linear.com/demo
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.
USB to
RIBBON CABLE
LTC3880EUJ
, I
, V
IN
IN
OUT
current sharing
®
LTC3880
PROGRAMMING
BOARD DC1709A
, I
,
OUT
dc1709a F01
DC1709af
1

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Summary of Contents for Linear Technology DC1709A

  • Page 1 DC1709A http://www.linear.com/demo DEMO SYSTEM REQUIRED SOFTWARE 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 LTpowerPlay property of their respective owners.

  • Page 2: Quick Start Procedure

    Demonstration circuit 1709A makes it easy to program 6. On your PC, launch LTpowerPlay. LTpowerPlay will and verify the EEPROM contents of the LTC3880. identify the DC1709A and launch the appropriate GUI (see Figure 5). 1. Make sure jumpers are in the following positions: NOTE: You will see an undertemperature (UT) fault.
  • Page 3 DEMO MANUAL DC1709A Quick start proceDure Figure 3. FDC1427A Ribbon Cable Installation Figure 4. DC1613A Ribbon Cable Installation DC1709af Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from...
  • Page 4 DEMO MANUAL DC1709A Quick start proceDure WHAT YOU CAN DO WITH THE DC1709A 3. Verify the EEPROM within the DC1709A contains the factory defaults. 1. Compare the contents of the EEPROM in the LTC3880 against your project or hex file.

  • Page 5: Parts List

    DEMO MANUAL DC1709A parts List ITEM REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components SKT1 6×6 QFN FLAT LEAD LIDDED THROUGH-HOLE PLASTRONICS, 40QN50S16060-B SOCKET C11, C14, C16, C20 CAP., 0.10µF, 10%, 16V, X7R, 0603 AVX, 0603YC104KAT2A CAP., CER, 10000pF, 25V, 10%, X7R, 0603, OPT.

  • Page 6: Schematic Diagram

    DEMO MANUAL DC1709A schematic Diagram DC1709af Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from...
  • Page 7 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:

1709a