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About AKM
What makes AKM different ?
Energy Harvesting
The energy harvesting ICs of Asahi Kasei Microdevices Corporation (AKM) are well suited for microwatt-level power utilization.
The challenge with energy harvesting is that it generates less power and is often more prone to instability.
For its ultra-low quiescent current, AKM's Energy Harvesting IC enables stable operation of IoT devices even at micro-watt levels of generation.
System operation with brief charging
System startup with brief charging
AKM's Energy Harvesting IC can be used to charge a small capacitor to start up the system in a short period of time and then recharge the secondary batteries.
In addition, it operates with only a small current of 52nA, thus reducing unnecessary quiescent power and preventing over-discharging of the system.
Suppresses the voltage drop of the battery when no power is generated
Contributes to the long-term storage of rechargeable batteries
AKM's Energy Harvesting IC offers an innovative solution for secondary battery over-discharge issues during long-term stocking.This IC can simultaneously protect the secondary batteries from over-discharging and over-voltage with only 52nA*.
* Total 52nA achieved by using 2 channels of IC built-in comparator 26nA
Multiplexing of power generation methods
Operate a system with a micro-watt-level power generator
AKM achieved system start-up with microwatts by incorporating a booster circuit that starts up a system at 15mV in minimum and a charge/discharge control circuit that runs at a slight 26nA in a single chip.
In addition, we are developing a product lineup that is compatible with various types of power generation devices, such as bio-fuel-cell, microbial cell, and thermoelectric power generation devices. By combining these devices with solar cells that have a high cell count, such as six cells, we are able to multiplex power generation methods and stabilize the voltage of power storage devices.