Wireless power receiver for in-case charging of consumer devices
The P9222-R receiver, says the company, is optimized for wireless charging cases used to charge earbuds, hearing aids, and other small, battery-powered consumer devices. Featuring an ultra-compact size of 2.28 mm x 3.38 mm and an extremely low power consumption of less than 50 mW, the device is offered as being ideal for wireless charging cases of up to 5 W.
“Our new P9222-R wireless power receiver enables manufacturers to get to market faster with wireless charging cases for earbuds, hearing aids and other small, battery-powered consumer devices thanks to its combination of programmability, small size, and low power consumption,” says Chris Stephens, vice president and general manager of IDT’s Wireless Power division. “With the P9222-R Rx, manufacturers can simultaneously meet their key goals of maximizing battery life while decreasing the overall size of their devices.”
A unique feature of the P9222-R is ping detection, which prevents overheating by reducing power consumption at the end of the battery’s charging cycle. The P9222-R is also optimized for efficient light load operation to further minimize temperature rise.
The device also features an extremely low under-voltage lockout (UVLO) threshold, which enables fast charging over an extended area even when a wireless power transmitter’s digital ping strength is weak. An integrated 32-bit ARM Cortex-M0 processor offers a high level of programmability and design parameters that can be easily configured through the I2C interface or an external EEPROM.
The P9222-R receiver is supported by P9222-R-EVK reference design with a small 30 x 30 mm coil.
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