Texas Instruments Wireless Power Receiver & Battery Charger IC, VQFN-20

The Texas Instruments Wireless Power Receiver & Battery Charger IC integrates a complete wireless power solution into a compact, surface-mount VQFN-20 package. This highly efficient device combines a wireless power receiver, a synchronous rectifier, and a dedicated charge controller for single-cell Lithium-Ion (Li-Ion) and Lithium-Polymer (LiPol) batteries.

Engineered for peak performance, it achieves up to 93% AC-DC charging efficiency. This is accomplished through a robust architecture that includes a low-impedance synchronous rectifier and a low-dropout regulator (LDO), both utilising low-resistance N-MOSFETs to minimise power dissipation and heat generation.

The chip fully complies with the Qi v1.2 wireless charging standard, handling all necessary digital communication and control protocols to ensure safe, efficient power transfer from a compatible charging pad. It integrates accurate voltage and current regulation loops, along with comprehensive protection features including thermal shutdown, overcurrent protection, and continuous temperature monitoring for fault detection.

The power stage intelligently tracks both rectifier and battery voltage to optimise efficiency throughout the charging cycle. This makes it an ideal, single-package solution for designers of compact, portable electronics requiring reliable wireless charging capabilities.

Primary Applications

This integrated circuit is typically designed for use in:

• Rechargeable battery packs
• Mobile phones and smartphones
• Wireless headsets and earbuds
• Portable media players
• Various handheld consumer devices

By incorporating this Texas Instruments IC, product designers can streamline their development process, reduce component count, and deliver a reliable, efficient wireless charging experience to end-users.