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Coils used for wireless charging produce an alternating electromagnetic field that is utilized to inductively transfer energy to other coils that are parallel to one another and nearby. The energy is utilized to power the equipment that is receiving it or to charge batteries.
A wound-up cable forms a magnetic field when an electric current is sent through it. This magnetic field’s action causes another electric current to be produced in a second coil some distance away. Without making physical touch, electricity can be transported this way from one gadget to another.
The global coil-driver for wireless charging transmitter market accounted for $XX Billion in 2021 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2022 to 2030.
The AOZ32034AQV, a new product in the family of coil drivers for wireless charging transmitter circuits of up to 50W, was released by Alpha and Omega Semiconductor Limited. The device is developed for wireless charging applications in charging stations, cordless power tools, vacuum cleaners, drones, and other consumer electronic equipment. It is packaged in a thermally improved QFN 4 × 4 packaging.
Compared to the AOZ32033AQI, the previous member of this family, which was intended for 30W applications, the AOZ32034AQV offers a greater power rating of up to 50W. For the highest power conversion efficiency, wireless charging circuits combine a full-bridge topology with a resonant tank circuit.
The implementation of this topology is easier with the AOZ32034AQV half-bridge power stage than with discrete methods. This product family’s ability to modify MOSFET gate drive via the slew rate control (SRC) pin is a crucial feature. By balancing EMI and efficiency, a system designer is able to optimize the design. The gadget can accept input voltages ranging from 4V to 28V.The AOZ32034AQV has a lead-time of weeks and is instantly available in production quantities.
Based on the NXP MWCT1013AVLH transmit controller IC, the NXP 15 W multi-coil transmitter reference platform is intended for wireless charging applications in automobiles.
All control operations required to create a wireless charging transmitter solution are managed and carried out by the controller IC. While taking into account the complex operating environment of a car, it offers a high-performance wireless charging system.
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