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EH300/EH300A/EH301/EH301A
EH300/EH301 EPAD
®
ENERGY HARVESTING
TM
Modules
GENERAL DESCRIPTION
EH300/EH301 Series EPAD
®
ENERGY HARVESTING
TM
Modules can accept energy from many types of electrical
energy sources and store this energy to power conventional
3.3V and 5.0V electrical circuits and systems. EH300/EH301
Series Modules are completely self-powered and always in
the active mode. They are intended for low power intermit-
tent duty cycle sampled data or condition-based monitoring/
extreme lifespan applications. These Modules can accept
instantaneous input voltages ranging from 0.0V to +/-500V
AC or DC, and input currents from 200nA to 400mA from
energy harvesting sources that produce electrical energy in
either a steady or an intermittent and irregular manner with
varying source impedances. EH300/EH301 Series Modules
condition the stored energy to provide power at output volt-
age and current levels that are within the limits of a particu-
lar electronic system power supply specifications. For ex-
ample, 1.8V and 3.6V is a useful voltage range for many
types of I.C. circuits such as microprocessors.
EH300/EH301 Series Modules are designed to continuously
and actively operate to capture, accumulate and conserve
energy from an external energy source. Each individual
EH300/EH301 Series Module is set to operate between two
supply voltage thresholds, +V_low DC and +V_high DC,
corresponding to the minimum (V
L
) and maximum (V
H
) sup-
ply voltage values for the intended application. When an en-
ergy source starts to inject energy into the inputs of an EH300/
EH301 Series Module in the form of electrical charge im-
pulses, these charge packets are collected, accumulated and
stored onto an internal storage capacitor bank. For most com-
mon energy harvesting applications, the electrical energy
charge packets arrives in the form of input voltage spikes
that are uncontrolled and unpredictable. Often these cover
a wide range of voltages, currents and timing waveforms.
EH300/EH301 Series Modules are designed to accommo-
date such conditions with exceptional efficiency and effec-
tiveness
.
As an example, EH300 Series Module can cycle
within 4 minutes at an average input current of 10
µA
and
within 40 minutes at an average input current of just 1.0
µA.
ORDERING INFORMATION
FUNCTIONAL DESCRIPTION
Part Number
Description
SPECIFICATIONS
EH300/EH300A/EH301/EH301A
Input/Output Electrical Specifications @25° C
•
•
•
•
•
Max. Instantaneous Input Voltage: +/- 500V
Max. Instantaneous Input Current: 400mA
Max. Input Power: 500mW
Min. Operational Input: 0.0V@1nA
Min. Charging Input (Max. Power Dissipation):
- EH300
- EH301
- EH300A
- EH301A
4.0V@200nA(800nW)
6.0V@300nA(1800nW)
4.0V@500nA(2µW)
6.0V@500nA(3µW)
•
•
•
•
Internal Voltage Clamp: 7.0V@10mA
Max. Output Current: 1 amp
Operating Life Cycles: Virtually unlimited
Logic Compatibility: CMOS
EH300
• V
L=
1.8V V
H=
3.6V
• Useful Energy Output@ 4.6mJ
• Output On-Time Rating: 68msec@25mA
EH300A
• V
L=
1.8V V
H=
3.6V
• Useful Energy Output@ 30mJ
• Output On-Time Rating: 75msec@150mA
EH301
• V
L=
3.1V V
H=
5.2V
• Useful Energy Output@ 8.3mJ
• Output On-Time Rating: 80msec@25mA
EH301A
• V
L=
3.1V V
H=
5.2V
• Useful Energy Output@ 55mJ
• Output On-Time Rating: 88msec@150mA
EH300
EH300A
EH301
EH301A
EHJ1C
EHJ2C
4.6 mJ Module / 1.8V to 3.6V operation
30 mJ Module / 1.8V to 3.6V operation
8.3 mJ Module / 3.1V to 5.2V operation
55 mJ Module / 3.1V to 5.2V operation
6 inch cable / J1connector (Input)
6 inch cable / J2 connector (Output)
EH300/EH301 Series Modules' voltage on the
onboard storage capacitor bank is +V, which is also the
positive supply voltage switched to power the output
power load. Initially, +V voltage on an EH300/EH301
Series Module starts at 0.0V. During the initial charge
period, +V starts charging from 0.0V. The internal circuit
of the Module monitors and detects this +V voltage. When
+V reaches V
H
, the Module output (V
P
) is enabled and
turned to the ON state and is then able to supply power
Note: EH300A and EH301A are high energy output versions
© 2007 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com
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