5V Qi wireless charger for A11 Qi coils

The technologies today are rapidly advancing, the day that charging your smartphones wirelessly is here. The convenience of charging your phone without plugging a cable into it is one of the advantages of wireless charging technology. The difference between wired and wirelessly charging may be minimal but the comfort, speed, usability of it can matter in situations. The Wireless charging technology works on the principles of electromagnetic induction. The coil in the charging plate or base creates a magnetic field as current passes through. The field created will induce an electromotive force (EMF) that produces electrical current in an adjacent coil of wire without actually touching it.

STWBC Wireless Battery Charger Transmitter

Wireless charging is the process of transferring power from transmitter to the receiver end without any physical connection. This method of charging electronic devices contributes to ease in charging and even convenience to user. The reference design being shown is the STEVAL-ISB027V1, a 5-watt Qi A11 wireless charger transmitter eval-board from STMicroelectronics based from the STWBC, a wireless battery transmitter. Read more


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Ultra-low-power Energy Harvester and Battery Charger

The electronic gadgets are the most popular devices that are being used by everyone today, and how it is quickly drained up is the most common problem. The circuit as shown in the reference design is the STEVAL-ISV09V1, which is an evaluation board for SPV1050. The SPV1050 is a transformerless thermoelectric generators and PV modules energy harvester, comes with high efficiency for any harvesting source and has a maximum of 70mA maximum battery charging current. It also allows to charge any type of battery which includes thin film batteries which need proper monitoring provision of the length of charging and voltage level of batteries to ensure that battery life is preserve.Read more