Renesas is a leader in wireless power receiver IC solutions for wireless charger applications, addressing all major standards and technologies with an extensive portfolio of standards-certified products. Renesas offers Qi standard solutions to meet the needs of next-generation portable devices. The highly flexible, high-efficiency, and compact designs are ideal for use in a myriad of portable devices where time to market, battery life, and physical size are a primary concern. Typical applications include smart phones, tablets, and related accessories, although wireless power brings unique benefits to applications in almost all market segments.

Learn more: Introduction to Wireless Battery Charging
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Qi-compliant Wireless Power Receiver ICs

The Renesas Qi-compliant wireless power receiver IC s enable OEMs to develop portable devices that are fully compatible with any Qi-compliant charging base. The devices function by converting an AC power signal from a resonant tank into a regulated 5 V output voltage, which can be used to supply power to the mobile system. For the best efficiency, Renesas offers compact solutions with an integrated synchronous full bridge rectifier, high-efficiency buck converter, and control circuits. Ultra-compact wireless power receiver ICs swap out the buck converter for a 5 V LDO to minimize PCB area requirements. All devices provide output power up to 5 watts in accordance with the WPC “Qi” specification.

About Wireless Power Receivers

At a high level, wireless power receiver ICs are intelligent devices used to take an incoming AC supply from the receiving coil and convert it into a well-regulated DC supply voltage for use in the system. Wireless power receiver ICs will generally integrate a full-bridge rectifier and linear or switching voltage regulator, along with all the necessary communication and control circuitry necessary to comply with the wireless power standard.