Wireless charging ICs offer several high-end features such as precise power supply, small size, compact, and lightweight operations. This has encouraged their use in a variety of IoT devices, including smart pens, battery-powered wearables, asset trackers, shipment trackers, Bluetooth trackers, and asset trackers. The expansion of the market will also be assisted by growing government funding initiatives to promote the utilization of IoT technology. In this article, everything PE has listed some interesting Wireless Charging ICs that were trending on the website.
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70 W Wireless Charging Receiver IC for Medical Applications
The STWLC98 from STMicroelectronics is a Wireless Charging Receiver IC that has been designed to support WPC Qi proprietary specifications for inductive communication protocol with Extended Power Profile (EPP) and proprietary ST Super Charge (STSC) protocol for fast charging. It delivers an output power of up to 70 W. This receiver IC consists of a 32-bit ARM Cortex M3 Core microcontroller unit, linear voltage regulators (LDO), voltage clampers, 8-levels ASK modulator, enhanced FSK demodulator, synchronous rectifier, ADC, FTP, and memory unit. It achieves high efficiency and low power dissipation using a low-loss synchronous rectifier and low drop-out linear regulator. Read more.
AEC-Q100 Qualified Wireless Power Transmitter Controller IC
The WP300TX01-I/ML01 from Microchip Technology is an Automotive Qualified Wireless Power Transmitter Controller IC that has been designed to wirelessly transmit power from the embedded chip. It requires an input voltage of 11 - 37 V and delivers an output power of up to 300 W. This wireless charging transmitter IC integrates three outputs for general-purpose LEDs and five inputs for the switch interface. It uses built-in UART and SPI serial communication channels to transmit and receive commands and signals from the paired wireless receiver device. This transmitter IC implements a reliable foreign object detection (FOD) to detect any unwanted objects that might degrade the performance or cause damage to the transmitter. Read more.
Wireless Power Receiver IC for Portable & Medical Applications
The KTE7000 from Kinetic Technologies is a Wireless Power Receiver IC that supports WPC/Qi standard v1.3 Baseline Power Profile (BPP) specifications. It requires an input voltage of 25 V and delivers an output power of 5 W. This wireless power receiver IC integrates a full-synchronous rectifier and an LDO to efficiently convert the wireless AC power into DC power. It provides power management, protection, and communication interface with the power transmitter using an embedded microcontroller that includes ROM and OTP memory. This IC magnetically couples to an AC source using an inductor connected across its input pins, thereby delivering a fully regulated DC power. Read more.
AEC-Q100 Qualified Wireless Power Transmitter Controller ICs
The MWCT2xx3A from NXP Semiconductors are Automotive Qualified Wireless Power Transmitter Controller ICs that are designed to support WPC/Qi standards and other proprietary specifications. They require an input voltage of 5 - 48 V. These transmitter ICs are designed to intelligently detect if a mobile device is placed on the charging pad and when detected, control the power transfer according to the message packets sent by the mobile device. They support 2-way communication, utilize ASK and FSK modulation techniques at the transmitter and receiver, and use up to 2 digital demodulation modules to reduce the number of external components. These charging ICs utilize operating frequency dithering technology to minimize the number of peak emissions occurring at specific frequencies. Read more.
Wireless Charging Receiver for RFID and Low Power Applications
The PCC110 from Powercast is a Wireless Charging Receiver IC that operates from 10 MHz to 6 GHz. This wireless charging receiver is designed to maximize RF to DC-conversion efficiency of up to 75 % while supporting a wide range of input power levels, load voltages, and frequency bands. It converts low-level RF signals enabling long-range applications and harvests energy using all types of modulation techniques. This RoHS-compliant receiver offers interoperability with numerous sources such as Wi-Fi routers, NFC, and RFID readers and is designed to efficiently boost low input voltages to provide an extended range and regulated output voltage to a load device. The PCC110 is available in a surface-mount package and is ideal for battery-free wireless sensors, high-function RFID, recharging, and low-power electronics applications. Read more.
15 W Wireless Power Transmitter for Automotive Applications
The P9261 from Renesas Electronics is a 15 W Wireless Power Transmitter IC that supports WPC Qi and other proprietary specifications. It has an input voltage of 4.25 - 21 V and can function with multiple coils in a full-bridge or half-bridge inverter configuration. This transmitter generates power through the power coil, detects the presence of a wireless power receiver, decodes the communication packets from the receiver, and adjusts the transmitted power by controlling the voltage based on feedback from the receiver. It consists of input under-voltage, input overvoltage, output short-circuit, and over-temperature protection circuitries. This AEC-Q100-qualified transmitter can also detect a foreign metal object if it is placed on it and supports bi-directional protocols such as I2C and SPI. Read more.
5 W Wireless Charging Transmitter IC
The TS80002 from Semtech is a Wireless Charging Transmitter IC that can support systems up to 5 W and portable wireless charging applications. It requires a DC supply of 2.95 to 5.5 V and consists of an integrated controller and FLASH for communications and control purposes. This controller is coded with protocol to send commands to the transmitter to adjust the power level accordingly. It supports 4 configurable general purposes I/Os, and an I2C interface. This wireless charging transmitter IC is available in a surface-mount package that measures 3 x 3 mm and is ideal for smartwatches, wearables, toys, portable lighting, and medical device applications. Read more.
15 W Wireless Charging Transmitter IC for Portable Applications
The WLC1115-68LQXQ from Infineon Technologies is a 15 W Wireless Charging Transmitter IC that supports WPC Qi and other proprietary specifications. It has an input voltage from 4.5 V to 24 V. This transmitter IC has a highly programmable and integrated USB-PD link solution that supports both the latest USB-PD 3.0 version as well as USB-PD legacy charging protocols such as QC 2.0/3.0 and AFC. It is designed using a 32-bit ARM Cortex-M0 processor and consists of gate drivers, buck converter controller, Q-factor detector, and an FSK modulator. This transmitter IC supports various analog and digital peripherals such as ADC, PWMs, and timers. The WLC1115-68LQXQ offers over-current protection (OCP), over-voltage protection (OVP), and an internal temperature sensor to avoid overheating of the IC. This RoHS-compliant wireless transmitter is available in a surface-mount package that measures 8 x 8 x 0.65 mm. Read more.
Single-Chip Wireless Charging Receiver for Portable Applications
The NC6401 from onsemi is a Single-Chip Wireless Charging Receiver that supports WPC Qi and other proprietary specifications. It has a programmable output voltage of 4 V to 12 V. This charging receiver is based on an ARM Cortex M0+ processor which has a 128 KB flash memory that enables it to support proprietary protocols as well as interact with variant transmitters systems at high system-level efficiency. It consists of a fully integrated synchronous rectifier and a 16 KB SRAM. This receiver supports communication interfaces such as I2C and UART to allow communication with other connected devices. It is available in a surface-mount package and is ideal for smartphone, tablet, and portable device applications. Read more.
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