Wireless Power Transmitter Symbol

The board features a micro-USB connector to supply 5V power to the input. Alternatively, VIN and GND test points can be connected to a different power source or wired directly into a prototype system. An optional MOSFET (Q6) is connected in series with the micro-USB connector (J4). While the MOSFET is not required for operating the P9038 from a USB adapter, it is required for strict USB compliance, serving to limit inrush current and provide over-voltage protection for anything over 12 VDC. IDT recommends using the MOSFET if the board might draw power from a standard USB port, such as from a USB connector on a laptop or PC. If the application will not be powered by a standard USB port, and the input voltage can be controlled not to exceed 12 V DC, then the series MOSFET can be removed.

The P9038-based solution is well-suited for a wide range of applications, including PC peripherals, furniture, medical devices, and other portable devices still hindered by traditional contact-based charging bases or cables.