DEMO MANUAL DC2042A
LTC3588-1/LTC3108/LTC3105/
LTC3459/LTC2935-2/LTC2935-4
Energy Harvesting (EH) Multisource
Demo Board
In addition, many turrets are provided and one transducer
header is available to make it easy to connect transducers
to the board.
The board contains multiple jumpers that allow the board
to be configured in various ways. The standard build for
the board has three jumpers installed out of the possible
10 jumpers. The board is very customizable to the end
users’ needs. This compatibility makes it a perfect evalu-
ation tool for any low power energy harvesting system
Please refer to the individual data sheets for the opera-
tion of each power management circuit. The application
section of this demo manual describes the system level
functionality of this board and the various ways it can be
used in early design prototyping.
Design files for this circuit board are available at
http://www.linear.com/demo
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
DESCRIPTION
The
DC2042A
is a versatile energy harvesting demo board
that is capable of accepting piezoelectric, solar, 4mA to
20mA loops, thermal-powered energy sources or any high
impedance AC or DC source. The board contains four
independent circuits consisting of the following EH ICs:
•
LTC
®
3588-1:
Piezoelectric Energy Harvesting Power
Supply.
•
LTC3108:
Ultralow Voltage Step-Up Converter and
Power Manager.
•
LTC3105:
Step-Up DC/DC Converter with Power Point
Control and LDO Regulator.
•
LTC3459:
10V Micropower Synchronous Boost
Converter.
•
LTC2935-2/LTC2935-4:
Ultralow Power Supervisor
with Power-Fail Output Selectable Thresholds.
The board supports the following interconnects:
• Direct connection with the Dust Mote demo boards, the
DC9003A-B Mote on a chip or the DC9003A-A Manager
on a chip.
• Energy Micro STK development kit.
DC2042A Connected to DC9003A-B Dust Mote (Top View)
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DEMO MANUAL DC2042A
DESCRIPTION
DC2042A Connected to DC9003A-B Dust Mote (Bottom View)
QUICK START PROCEDURE
Refer to Figures 2 through 6 for the proper measurement
equipment setup and jumper settings for the following
test procedure.
1. Note the Header KEY locations that guarantee proper
interconnect of compatible adaptor boards.
J1 (Energy Micro STK Header) does not have a KEY.
J2 (Dust Mote Header) has a KEY in position 5.
J3 (Horizontal Transducer Header, NOT INSTALLED
on standard build) has a KEY in position 12.
J4 (Vertical Transducer Header) has a KEY in position
12.
J3
Figure 1b. J3, Horizontal Transducer Header
J1
J2
J4
Figure 1a. J1, Energy Micro Header and J2, Dust Mote Header
Figure 1c. J4, Vertical Transducer Header
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DEMO MANUAL DC2042A
QUICK START PROCEDURE
2. Configure the test equipment and jumpers as shown
in Figure 2. Verify the jumper settings are as follows:
JP1.
OPEN
JP2.
OPEN
JP3.
OPEN
JP4.
OPEN
JP5.
OPEN
JP6.
OPEN
JP7.
OPEN
JP8. INSTALLED
JP9. INSTALLED in “ON” Position
JP10.
OPEN
3. Slowly increase PS1 and observe the voltage at which
VM2 turns on. VM1 should be equal to approximately
3.15V.
4. Slowly decrease PS1 towards zero. Observe the volt-
age on VM1 at which VM2 drops rapidly to 0V. VM1
should be equal to approximately 2.25V.
5. Turn off PS1
6. Install JP4 and reconfigure the test equipment as
shown in Figure 3 (Solar Circuit testing).
7. Disconnect PS2 and Set PS2 to 3.0V. Turn off PS2.
Reconnect PS2 and turn on PS2.
8. Observe the voltage on VM1 and VM2. The voltage
on VM1 should be approximately 2.49V and on VM2
should be 3.3V.
9. Turn off PS2
10.
MOVE JP4 to JP1.
Disconnect PS2 from the board.
Set PS3 equal to 6.0V. Reconfigure the test equipment
as shown in Figure 4.
11. Turn on PS3. Observe the voltage on VM1 and VM2.
The voltage on VM1 should be approximately 5.77V
and on VM2 should be 3.3V.
12. Use VM3 to observe the voltage on JP5-2. The voltage
should be equal to the same level observed on VM2.
13. Turn off PS3
14.
MOVE JP1 to JP3.
Disconnect PS3 from the board and
set PS4 equal to 5.0V. Reconfigure the test equipment
as shown in Figure 5.
15. Turn on PS4. Observe the voltage on VM1 and VM2.
The voltage on VM1 should be approximately 0.34V
and on VM2 should be 3.3V.
16. Use VM3 to observe the voltage on JP7-2. The voltage
should be approximately equal to the level observed
on VM2.
17. Turn off PS4
18.
MOVE JP3 to JP2.
Disconnect PS4 from the board
and set PS5 equal to 0.32V. Reconfigure the test
equipment as shown in Figure 6.
19. Turn on PS5. Observe the voltage on VM1 and VM2.
The voltage on VM1 should be approximately 0.14V
and VM2 should be 3.3V.
20. Use VM3 to observe the voltage on JP6-2. The voltage
should be approximately 2.0V.
21. Use VM3 to observe the voltage on JP10-1. The volt-
age should be approximately 5.0V.
22. Turn off PS5.
23. Reset the Jumpers as shown on Figure 7a.
JP1.
OPEN
JP2.
OPEN
JP3.
OPEN
JP4. INSTALLED
JP5.
OPEN
JP6.
OPEN
JP7.
OPEN
JP8. INSTALLED
JP9. INSTALLED in “ON” Position
JP10.
OPEN
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DEMO MANUAL DC2042A
QUICK START PROCEDURE
Figure 2. VMCU Power Switchover Test Setup (Test Steps 2 to 5)
Figure 3. Solar Circuitry Test Setup (Test Steps 6 to 9 ) Proper Measurement Equipment Setup for DC2042A Solar Circuit Testing
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DEMO MANUAL DC2042A
QUICK START PROCEDURE
Figure 4. Piezoelectric Circuitry Test Setup (Test Steps 10 to 13 )
Proper Measurement Equipment Setup for DC2042A Piezoelectric Circuit Testing
Figure 5. 4mA to 20mA Loop Circuitry Test Setup (Test Steps 14 to 17)
Proper Measurement Equipment Setup for DC2042A 4mA to 20mA Loop Circuit Testing
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