Wireless power chipset lets smartphones charge as fast as wired
The company announced sampling of the P9415 receiver and P9247 transmitter that work together to enable smartphones to charge wirelessly with up to 30 W of power. The new ICs, says the company, allow smartphones to charge wirelessly at the same rate as wired connections.
“Very fast wireless charging for smartphones has been the holy grail in the industry for the last eight years and the P9415/P9247 chipset is the latest example of IDT’s continued advancement of state-of-the-art wireless charging technology,” says Christopher Stephens, vice president and general manager of IDT’s Wireless Power Division. “We expect this release to spur even broader adoption of wireless charging in 4G and 5G smartphones.”
The ICs offer 90% DC/DC efficiency for 30W of power transfer with a standard low-profile coil (< 0.35 mm) suitable for smartphone integration, says the company. The P9415 receiver accommodates up to 20 V out of the onboard LDO with the current sense capability necessary for high-power applications and is footprint compatible with the company’s existing P9382A 15-V receiver to provide an upgrade option for even faster charging times.
The P9415 features IDT’s Wattshare technology with up to 10 W of transmit power capability, and, says the company, can also unlock the ecosystem potential for OEMs to charge smartwatches, ear buds, and other devices on the go. The device has been designed and tested for robustness in the over-voltage and load transient situations inherent in wireless power transfer at these very high power levels.
The P9247 transmitter delivers up to 30 W of power to the receiver and accommodates all Qi-based power transfer protocols (including BPP, EPP, and proprietary protocol extensions), as well as popular wall adapter protocols. The P9247 also incorporates new technology for real-time foreign object detection (FOD) and additionally allows for power adjustment via frequency, duty-cycle, and/or bridge voltage adjustment and offers significant margin to EMI requirements in all regions of the world.
Both devices are sampling now to qualified customers.
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