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Description
Demonstration circuit 1811B-A is a dual-output, high
efficiency, high density, µModule
26.5V input range. Each output can supply 13A maximum
load current. The demo board has a
regulator, which is a dual 13A or single 26A step-down
regulator with PMBus power system management. Please
see LTM4676 data sheet for more detailed information
The DC1811B-A powers up to default settings and produces
power based on configuration resistors without the need for
any serial bus communication. This allows easy evaluation
of the DC/DC converter. To fully explore the extensive power
system management features of the part, download the GUI
software LTpowerPlay™ onto your PC and use LTC's I
SMBus/PMBus dongle DC1613A to connect to the board.
BoarD photo
Regulator with PMBus Digital
Power System Management
regulator with 4.5V to
®
LTM
4676
µModule
®
2
C/
Figure 1. Dual-Output LTM4676/DC1811B-A Demo Circuit
DEMO MANUAL DC1811B-A
Dual Step-Down µModule
LTpowerPlay allows the user to reconfigure the part on the
fly and store the configuration in EEPROM, view telemetry
of voltage, current, temperature and fault status
GUI Download
The software can be downloaded from:
http://www.linear.com/ltpowerplay
For more details and instructions of LTpowerPlay, please
refer to LTpowerPlay GUI for LTM4676 Quick Start Guide.
Design files for this circuit board are available at
http://www.linear.com/demo/DC1811BA
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.
LTM4676
dc1811baf
1
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Related Manuals for Linear Technology DC1811B-A
Summary of Contents for Linear Technology DC1811B-A
- Page 1 LTpowerPlay™ onto your PC and use LTC’s I L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and SMBus/PMBus dongle DC1613A to connect to the board. LTpowerPlay is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners.
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Page 2: Performance Summary
3. Connect the 1.8V output load between VOUT1 and GND touch the (+) lead. (Initial load: no load). Connecting a PC to DC1811B-A 4. Connect the DVMs to the input and outputs. Set default You can use a PC to reconfigure the power management jumper position: JP1: ON;... - Page 3 DEMO MANUAL DC1811B-A Quick start proceDure + + - - A A Load1 ( 0~13A) Load0 ( 0~13A) - + V + - V Vout0 Vout1 ...
- Page 4 DEMO MANUAL DC1811B-A Quick start proceDure Input P ower Supply USB C able VIN Vout0 12-‐PIN ( J1) Load0 USB t o I 2C/PMBus LTM4676 D emo ...
- Page 5 DEMO MANUAL DC1811B-A Quick start proceDure OUT1 OUT0 (20MHz BW) (20MHz BW) 50mV/DIV 50mV/DIV 9.75A TO 13A 9.75A TO 13A LOAD STEP LOAD STEP Figure 7. Output Voltage V vs Load Current Figure 8. Output Voltage V vs Load Current...
- Page 6 You can use LTpowerPlay to board. The software also provides an automatic update evaluate Linear Technology ICs by connecting to a demo feature to keep the soft-ware current with the latest set board system. LTpowerPlay can also be used in an offline of device drivers and documentation.
- Page 7 1. Download and install the LTPowerPlay GUI: http://www.linear.com/ltpowerplay 2. Launch the LTpowerPlay GUI. a. The GUI should automatically identify the DC1811B-A. The system tree on the left hand side should look like this: b. A green message box shows for a few seconds in...
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Page 8: Parts List
DEMO MANUAL DC1811B-A parts List ITEM REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components CIN1 CAP., 150µF, 35V, ALUMINUM ELECTR., SUN ELECT., 35CE150AX CIN2, CIN3, CIN4, CIN5 CAP., X5R, 10µF, 35V, 10%,1210 MURATA, GRM32ER6YA106KA12 COUT1-COUT3, COUT6-COUT8 CAP., X5R, 100µF, 6.3V, 20%, 1210... -
Page 9: Schematic Diagram
DEMO MANUAL DC1811B-A schematic DiaGram dc1811baf... - Page 10 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 11 DEMO MANUAL DC1811B-A schematic DiaGram dc1811baf...
- Page 12 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.
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