S6AE102A / S6AE103A
Energy Harvesting PMIC
for Wireless Sensor Node
The S6AE102A/103A is a power management IC (PMIC) for energy harvesting that is built into circuits of solar cells connected in
series, dual output power control circuits, output capacitor storage circuits, power switching circuits of primary batteries, a LDO, a
comparator and timers. Super-low-power operation is possible using a consumption current of only 280 nA and startup power of
only 1.2 μW. As a result, even slight amounts of power generation can be obtained from compact solar cells under low-brightness
environments of approximately 100 lx. This IC stores power generated by solar cells to an output capacitor using built-in switch
control, and it turns on the power switching circuit while the capacitor voltage is within a preset maximum and minimum range for
supplying energy to a load. The output power control circuit has 2 outputs, and 1 of 2 outputs can control On and OFF of the power
gating circuit using interrupt signal. The output capacitor storage circuits have 2 capacitor connection circuit for a storage of system
load and a storage of surplus power, and if the power generated from solar cells is enough, the power is stored to the capacitor of
surplus power storage. If the power generated from solar cells is not enough, energy can also be supplied in the same way as solar
cells from the capacitor of surplus power storage or connected primary batteries for auxiliary power. This IC has also an
independent LDO. The LDO can provide stable voltage that a sensor requires. And also an independent comparator which can
make voltage comparison signal output a lot of flexibility is built in. Also, an over voltage protection (OVP) function is built into the
input pins of the solar cells, and the open voltage of solar cells is used by this IC to prevent an over voltage state. The
S6AE102A/103A is provided as a battery-free wireless sensor node solution that is operable by super-compact solar cells or
non-disconnect energy harvesting based wireless sensor node solution with the capacitor of surplus storage or primary batteries for
auxiliary power.
Features
Block Diagram
Operation input voltage range
Solar cell power
Primary battery power
: 2.0V to 5.5 V
: 2.0V to 5.5 V
: 1.1V to 5.2V
: 280 nA
: 1.2 μW
: 400 nA
S6AE102A / S6AE103A
Primary Battery
(Optional)
System Load1
Power Gating
Adjustable output voltage range
Low-consumption current
Minimum input power at startup
Low-consumption current LDO
Low-consumption current Timer
Low-consumption current comparator : 20 nA (S6AE103A
only)
Hybrid control of solar cell and primary battery with power
path control
Switch
System Load2
VSTORE1
Power Gating
Switch
Multiplexer
Series
Solar
Cell
: 30 nA
Hybrid Storage
Control
Over Voltage
Protection
VSTORE2
VIN_LDO
SW_CONT*2
ENA_LDO
STBY_LDO
ENA_COMP*1
Solar powered power control without battery
System power reduction control with power gating
Power gating control with interrupt signal
VOUT_LDO
LDO
Control Block
Power gating control with timer (S6AE103A only)
Hybrid storage system for a storage of system load and a
storage of surplus power
Voltage
Reference
Circuit
Interrupt
Request
Power supply and switch control signal output for external
path switch control
COMPP*1
COMPM*1
Comparator*1
INT
CR Timer*1
Input over voltage protection
Compact QFN-20/QFN-24 package
: 5.4V
: 4 mm × 4 mm
1
*
*1 : S6AE103A only *2 : SW_CONT/COMPOUT for S6AE103A
Applications
Energy harvesting power system with a very small solar cell
Bluetooth® Smart sensor
Wireless HVAC sensor
Wireless lighting control
Security system
Smart home / Building / Industrial wireless sensor
Cypress Semiconductor Corporation
Document Number: 002-08501 Rev.*D
•
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised April 18, 2017
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