Wireless charging technology is being increasingly incorporated in various devices. It started primarily with smartphones and now, devices such as earbuds, smartwatches etc. support wireless charging. Wireless transfer of power was introduced to the world when the father of electricity Nikola Tesla demonstrated magnetic resonant coupling – the ability to transmit electricity through the air by creating a magnetic field between two circuits, a transmitter, and a receiver. In the modern world, this has provided users with the ability to reduce cables and made life easier by connecting and powering electronic gadgets wirelessly.
everythingRF has created a list of the Top 10 most viewed Wireless Charging products of 2020.
Highly Integrated WattUp Wireless Power Transmitter
The DA4100 from Dialog Semiconductor is a highly integrated RF transmitter System-on-Chip designed to provide optimal charging of WattUp receiver devices. It consists of the RF transmitter, power management, and integrated DC-DC to power Dialog’s external Bluetooth Low Energy ICs, delivering a complete WattUp transmitter system solution. WattUp from Energous Corporation is a radio frequency (RF) based wireless charging solution that delivers intelligent, scalable power. This wireless charging transmitter can be used for charging low-power, battery-powered devices, such as wearables, fitness trackers, wearables, hearing aids, Bluetooth trackers, smartpens, and other devices. Click here for more details.
WPC-Compatible Wireless Power Transmitter for 5W Applications
The P9235A-RB from Renesas is a Wireless Power Transmitter for 5W applications. The magnetic induction-based transmitter is WPC-compatible and includes an integrated step-down switching regulator, integrated drivers for external power FETs, and an integrated current sense amplifier. This chipset requires an input voltage from 4.2 to 21 V and supports simultaneous voltage and current demodulation schemes for robust communication. The transmitter features two open-drain LED outputs with pre-defined blinking patterns and five general-purpose input/output (GPIO) pins. This charging transmitter includes an under-voltage lockout, Foreign object detection (FOD), and thermal management circuit to safeguard the device under fault conditions. It is available in aPb-free, space-saving 5 × 5 mm 40-VFQFPN package and supports the I2C interface. Click here for more details.
15 W Wireless Charging Transmitter for Mobile Devices
The STWBC-EP from STMicroelectronics is the digital controller for the wireless battery charger transmitters specifically designed to support the WPC 1.2 EPP (Extended Power Profile) applications up to 15 W. This transmitter is responsible for controlling the transmitting coil and generating the correct amount of power requested by the RX. The RX continuously provides the transmitter with the correct power level requested, by modulating the transmitter carrier through the controlled resistive or capacitive load. It can adapt to the amount of energy transferred by the coil by modulating the frequency, duty cycle, or amplitude of the PWM voltage on the transmitting coil. The STWBC-MC is available in a 5 x 5 mm VFQFPN32 package and is ideal for smartphones, tablets, and other battery-powered devices that use electromagnetic induction for recharging. Click here for more details.
15 W Wireless Power Transmitter IC
The TC7718FTG from Toshiba is a wireless power transmitter IC with a 15W transmission capability. This IC is connected to a microcontroller and realizes a wireless power transmission system compliant with Qi, the standard defined by the Wireless Power Consortium (WPC). Toshiba's original cutting-edge CD-0.13 process realizes a small package and high efficiency, making system integration easy while securing a transmitter system with a small footprint. The IC is suitable for use in a wide range of applications including mobile devices, such as smartphones and tablets, and industrial devices. Click here for more details.
5 W Wireless Power Receiver IC
The KTE7000 from Kinetic Technologies is a Single-Chip 5W Wireless Power Receiver IC. This WPC/Qi v1.2.4 BPP Compatible IC receiver integrates a full-synchronous rectifier with robust voltage surge protection and an LDO to efficiently convert the wireless AC power into 5V of DC power with a current of up to 1.5A. Higher power outputs are possible in proprietary modes. The KTE7000 is available in a 52-bump, 2.66 x 3.90mm WLCSP package and is ideal for IoT devices, battery-powered medical devices, wireless headsets, and several other applications. Click here for more details.
15 W Wireless Charging Receiver IC for Industrial and Consumer Applications
The MWPR1516 from NXP Semiconductors is a 15 W Wireless Charging Receiver IC designed for power transfer in smartphones, tablets, portable medical devices, and power tools. It adheres to the WPC and MPWG specifications and supports an operating voltage of 3.5 to 20V. The receiver IC supports AC/DC conversion and modulation/ demodulation for bi-directional communication to support industrial standards with foreign object detection (FOD). It is available in a QFN package for industrial applications and a WLCSP package for space-constrained consumer applications. Click here for more details.
100 W, Qi-compliant Wireless Power Transfer Transmitter Coil
The 760308101410 from Wurth Electronics is a Qi-compliant Wireless Power Transfer Transmitter Coil with an Inductance of 24 µH and a Q factor of 170 at 125 kHz/10 mA. It has high permeability shielding for wireless charging and supports up to 100 watts of power transfer. The 760308101410 is RoHS and REACH compliant and operates over a wide temperature range from -20 to 105 degrees C, and measures 50 x 3.1 mm. It is ideal for portable devices, medical, industrial, and mining industry applications. Click here for more details.
WPC Qi and A11 Compliant Wireless Charging Coil
The RWC5050AK060-500 from Laird Technologies is a WPC Qi and A11 compliant wireless charging coil. It has an Inductance from 5.85 to 7.15 µH, DCR 50 µOhms and a high Q factor of 70 for maximum power transmission. This module operates over a wide temperature range from -40 C to 125 C and is ideal for wireless charging in general electronics, offices, residential buildings, or public areas. Click here for more details.
10 W Qi-compliant Wireless Charging Transmitter Coil
The IWTX9955DEEB110KF3 from Vishay is a Qi-compliant Wireless Charging Transmitter Coil. The coil has an inductance of 11.3 uH, a Q factor of 100, and can operate over a temperature range from -40 to +125°C. It has a DCR of up to 80 mW and can handle 15 watts of power. This RoHS-compliant and Pb-free device has 3 coils and can be used for general wireless charging applications. Click here for more details.
15 W WPC LP/MP (Qi) v1.2.4 Compliant Wireless Charging Receiver
The NCP6401 from ON Semiconductor is a 15 W WPC LP/MP (Qi) v1.2.4 Compliant Wireless Charging Receiver. It is based on an ARM Cortex M0 processor and supports proprietary Magnetic Inductance (MI), Magnetic Resonance (MR), Qi, and AirFuel standards. The receiver has a programmable output voltage from 4 to 12 V in 100 mV steps and delivers a maximum output current of 1.25 A. It is available in a module that measures 3.355 x 3.875 mm and is designed for use with smartphones, tablets, and other portable devices. Click here for more details.
NOTE: This list has been compiled based on actual analytics data from everything RF. It consists of the products that were most viewed by users on everything RF in a specific category in 2020 (not in any specific order). We have limited the number of products shown for each company to 1, even if there were multiple products from a single company.
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