Efficient power management is a key component for energy harvesting but one of the biggest issues is that consumption from the power management function is greater than the energy supply from the environment.
The AP4470 requires only 0.2V input to start boosting without the need for an external transformer. This helps minimise the size of the energy harvesting materials needed and simplify the structure. The converter has two switches, one that controls the power supply for target devices such as sensors, wireless modules or LEDs and protect external storage such as capacitors, and one for the target. This provides a self-powered wireless sensor node, display system with simple hardware design.
The AP4470 converts DC inputs up to 3.55V and monitors external storage. When the external storage voltage reaches 3.3V, the AP4470 automatically starts suppling to target devices. If the voltage drops down to 2.6V, the AK4470 stops suppling voltage and current via on-chip switch function.
It has two types of power indicators that support a reset function and trigger switch with zero standby current. A pin outputs a signal when the boosting circuit becomes active, while another outputs a signal when the AP4470 starts supplying, which means external storage’s voltage reaches 3.3V.
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
The technical storage or access that is used exclusively for statistical purposes.The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.