Mobile phones and wearable products require fast charging and small size adapters

GW MB10F 0.8A 1000V rectifier bridge

High-power led lamp beads 1W white light Sanan 30mil high power LED lamp beads imitation lumens

Crystal oscillator

Mobile phone crystal 3.2*2.5mm 3225 26M (26.000MHZ)

Photocoupler

Charging and battery management are still key features for smartphones and will continue to innovate for many years to come. Improvements in wired and wireless charging can greatly expand the use of portable products, and we continue to push the limits of this feature. Charging systems require power-supply products (such as wall adapters) or wireless charging transmitters and receivers (such as smartphones and tablets) to be designed to be energy efficient. Focusing on these two applications, ON Semiconductor offers complete, optimized and energy efficient charging solutions to meet the power requirements of all of these products.

The market's demand for faster charging times, larger battery capacity and smaller adapters has pushed the power of smartphones and tablets to the point where traditional semiconductor devices are not feasible. Next-generation systems will require a gallium nitride ( GaN ) solution to replace traditional MOSFETs. GaN offers higher power density in the same area, making it attractive for wall adapters and high-power wireless charging transmitters. There are two main technologies for wireless charging, and it is easier to meet the high power requirements of magnetic resonance as provided by the AirFuel Alliance. For example, a notebook computer would require a transmitter to push 50 watts to the receiver at 6.78 MHz, and typically use a GaN power amplifier to design an energy efficient system.

AJElJallad, Senior Manager, Wireless and Wearable Strategy and Business Development, ON Semiconductor

At the receiving end, providing energy-efficient power conversion in a small area is critical for smartphones and wearable devices. ON Semiconductor has a complete wired and wireless charging solution and offers different integration solutions to meet the needs of designers.

For wall adapters, we offer primary and secondary conversion products, power management and control for all major smart charging protocols such as USBPD, Qualcomm Fast Charge QuickCharge and MediaTek ChargePumpExpress. And continue to use GaN to develop high power density solutions. We also have a wide lineup of smartphones, wearable solutions and power and digital switches of different integrations to identify power and data signals and connect them correctly to the rest of the system.

For magnetic resonance wireless charging systems, we have a highly integrated power management chip that handles 2W to 50W+ power transfer and integrates all system power monitoring. For the magnetic resonance wireless charging receiver, we have a variety of different devices, such as a full-bridge rectifier with an IC for power monitoring and conversion, can handle 20W of received power.

To enable designers to take the lead in developing wearable products, we launched the market's first scalable next-generation wearable technology design platform, the WDK1.0, with hardware, software, firmware and integrated development environments, as well as a downloadable SmartApp.