IDT 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. IDT offers Qi, AirFuel Inductive and dual-mode (Qi + AirFuel Inductive) 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.
Dual-mode (Qi + AirFuel Inductive) Solutions
IDT was the first in the industry to offer a dual-mode wireless power receiver IC, providing compatibility with both the Qi and AirFuel Inductive (formerly known as PMA) standards. IDT’s innovative receivers bridge the technology gap between competing transmission standards, empowering mobile device and accessory OEMs to use a single bill of materials (BOM) to support both standards. The dual-mode wireless power receivers automatically switch between Qi and AirFuel protocols and negotiate the power exchange without user supervision. This simplifies the system architecture and ensures seamless operation during everyday use. The devices deliver 5 W in Qi and AirFuel modes in accordance with those standards.
Qi-compliant Wireless Power Receiver ICs
IDT’s 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, IDT 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.
AirFuel Inductive-compliant Wireless Power Receiver ICs
IDT extends its leading technology into AirFuel Inductive (formerly known as PMA)-compliant wireless power receiver ICs. Similar to the Qi-compliant devices, the AirFuel Inductive-compliant devices function by converting an AC power signal from a resonant tank into a regulated 5 V output voltage. IDT’s devices offer options for DC modulation connections to facilitate low-cost, minimized BOM applications. The devices include the control circuitry required to modulate the load to transmit AirFuel Inductive-compliant message packets to the base station.
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.