Engineers Garage

  • Projects and Tutorials
    • Electronic Projects
      • 8051
      • Arduino
      • ARM
      • AVR
      • PIC
      • Raspberry pi
      • STM32
    • Tutorials
    • Circuit Design
    • Project Videos
    • Components
  • Articles
    • Tech Articles
    • Insight
    • Invention Stories
    • How to
    • What Is
  • News
    • Electronic Products News
    • DIY Reviews
    • Guest Post
  • Forums
    • EDABoard.com
    • Electro-Tech-Online
    • EG Forum Archive
  • Digi-Key Store
    • Cables, Wires
    • Connectors, Interconnect
    • Discrete
    • Electromechanical
    • Embedded Computers
    • Enclosures, Hardware, Office
    • Integrated Circuits (ICs)
    • Isolators
    • LED/Optoelectronics
    • Passive
    • Power, Circuit Protection
    • Programmers
    • RF, Wireless
    • Semiconductors
    • Sensors, Transducers
    • Test Products
    • Tools
  • EE Resources
    • DesignFast
    • LEAP Awards
    • Oscilloscope Product Finder
    • White Papers
    • Webinars
  • EE Learning Center
  • Women in Engineering

STMicroelectronics’ 70W chipsets boost wireless-charging speed

By Michelle Froese

STMicroelectronics’ STWLC98 integrated and wireless power receiver delivers faster wireless charging and flexible charge sharing for diverse portable and mobile devices for home, office, industry, healthcare, and in-car applications. When combined with the STWBC2-HP transmitter IC, the complete transmitter-receiver system can deliver up to 70W on the receiver end at high system efficiency.

The STWLC98 can fully charge today’s high-end smartphones, which contain high-capacity batteries, in just under 30 minutes. In addition, the new device extends opportunities for ultra-fast and convenient charging, free of cables, sockets, and restrictive connections, to a host of new applications and contexts.

Moreover, contactless charging lets product creators simplify enclosure designs, reducing cost and complexity while encouraging new slimline styles and eliminating problems associated with the socket such as contamination.

Compliant with the Qi EPP 1.3 wireless-charging standard commonly used in the smartphone industry, the STWLC98 is managed by a 32-bit Arm Cortex-M3 core that supports a range of features including built-in protection. It also comes with an embedded OS that simplifies Qi 1.3 standalone certification.

On the transmitter side, the STWBC2-HP can work with ST’s STSAFE-A110 secure element to store official Qi Certificates and provides authentication that leverages state-of-the-art cryptography. Support for the company’s innovative ST Super-Charge (STSC) protocol enables fast charging up to the maximum power-transfer rate of 70W.

The STWLC98 features ST’s proprietary adaptive rectifier configuration mode that enhances the ping-up and power transfer spatial freedom of the system in both horizontal and vertical directions without any change in hardware or coil optimization. Enabling ARC mode, which transforms the whole surface of the transmitter as usable charging area, increases the ping-up distance by up to 50 percent in all directions.

The STWLC98 works directly with the STWBC2-HP, which contains a USB-PD interface, digital buck/boost DC/DC converter, full-bridge inverter, three half-bridge drivers, and voltage, current, and phase sensors. Controlled by a Cortex-M0+ core, the STWBC2-HP executes a patented fast PID loop and also supports the STSC protocol.

ST’s new 70W wireless-charging chipset creates a scalable solution that can be deployed in devices like smartphones, tablets, laptops, power banks, True Wireless Stereo (TWS) devices, Bluetooth speakers, and AR/VR headsets.

Designers can also extend fast and convenient wireless-charging to medical equipment like monitors and medicine pumps, as well as cordless power tools, mobile robots, drones, and e-bikes. The chipset is also suited to automotive applications including in-cabin charging solutions and wireless charging of various modules on-board the vehicle.

With built-in power management, the STWLC98 has an energy-saving ultra-low-power standby mode while total end-to-end charging system efficiency can exceed 90 percent, thereby complying with stringent eco-design targets. The power charger chip features dedicated hardware and advanced algorithms that were developed to address challenges in ASK and FSK communication during high power delivery.

Additional safety features include foreign object detection (FOD), which leverages high-accuracy current-sense IP, Q-factor detection, and robust communication between transmitter and receiver. The STWLC98 can also operate in high-efficiency transmitter mode to allow high-power charge sharing between devices. This is coupled with the STWLC98’s industry-first embedded Q-factor detection in a receiver device to ensure safe operation in transmitter mode.

Users of ST’s wireless power solutions can download and benefit from the free PC-based graphical tool, ST Wireless Power Studio, to accelerate design-in and simplify processes including calibrating FOD, tuning Q-factor detection, and communication diagnostics.

 


Filed Under: Components, News, Power Management, Products
Tagged With: charging, chipset, mobiledevices, powermanagement, powerreceiver, STMicroelectronics, wireless
 

Questions related to this article?
👉Ask and discuss on Electro-Tech-Online.com and EDAboard.com forums.



Tell Us What You Think!! Cancel reply

You must be logged in to post a comment.

HAVE A QUESTION?

Have a technical question about an article or other engineering questions? Check out our engineering forums EDABoard.com and Electro-Tech-Online.com where you can get those questions asked and answered by your peers!


Featured Tutorials

  • Adjustable 0 to 30V 2A DC Power Supply Circuit (Part 1/13)
  • Adjustable +/- 1.25V to +/-22V 1A Power Supply Circuit (Part 2/13)
  • Adjustable 0 to 15V 1A Mini Power Supply (Part 3/13)
  • Constant 12V Power Supply for LED Circuits (Part 4/13)
  • Constant +/-9V DC Symmetrical Power Supply Circuit (Part 5/13)
  • Making a Circuit Breaker (Part 6/13)

Stay Up To Date

Newsletter Signup

Sign up and receive our weekly newsletter for latest Tech articles, Electronics Projects, Tutorial series and other insightful tech content.

EE Training Center Classrooms

“ee

“ee

“ee

“ee

“ee

“ee

Recent Articles

  • STMicroelectronics outlines path to $20B+ revenue
  • STMicroelectronics and MACOM announce successful RF GaN-on-Si prototypes
  • Infineon expands its CoolSiC portfolio
  • STMicroelectronics and AWS collaborate for secure IoT connections
  • Pet feeding system using WhatsApp (protocol bridging with MQTT)

Most Popular

5G 555 timer circuit 8051 ai Arduino atmega16 automotive avr dc motor display Electronic Part Electronic Parts Fujitsu ic infineontechnologies integratedcircuit Intel IoT ir lcd ldr led maximintegratedproducts microchip microchiptechnology Microchip Technology microcontroller microcontrollers mosfet motor powermanagement Raspberry Pi remote renesaselectronics Research robot samsung semiconductor sensor software STMicroelectronics switch Technology vishayintertechnology wireless

RSS EDABOARD.com Discussions

  • Space Vector PWM Help Needed
  • RFIC LNA cascode base and ground layout problem
  • Unable to launch virtuoso: libvisadev.so error
  • DIY test leads - source for lead ends?
  • P-Channel MOSFET always on

RSS Electro-Tech-Online.com Discussions

  • Voltage Regulator 12 - 5volt
  • How do I test amplifier speaker output polarity?
  • Adding Current Limit Feature to a Buck Converter
  • How to get lots of PCBs made cheap?
  • 24v dc relays not de-energising
Engineers Garage
  • Analog IC TIps
  • Connector Tips
  • DesignFast
  • EDABoard Forums
  • EE World Online
  • Electro-Tech-Online Forums
  • Microcontroller Tips
  • Power Electronic Tips
  • Sensor Tips
  • Test and Measurement Tips
  • 5G Technology World
  • About Us
  • Contact Us
  • Advertise

Copyright © 2022 WTWH Media LLC. All Rights Reserved. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media
Privacy Policy | Advertising | About Us

Search Engineers Garage

  • Projects and Tutorials
    • Electronic Projects
      • 8051
      • Arduino
      • ARM
      • AVR
      • PIC
      • Raspberry pi
      • STM32
    • Tutorials
    • Circuit Design
    • Project Videos
    • Components
  • Articles
    • Tech Articles
    • Insight
    • Invention Stories
    • How to
    • What Is
  • News
    • Electronic Products News
    • DIY Reviews
    • Guest Post
  • Forums
    • EDABoard.com
    • Electro-Tech-Online
    • EG Forum Archive
  • Digi-Key Store
    • Cables, Wires
    • Connectors, Interconnect
    • Discrete
    • Electromechanical
    • Embedded Computers
    • Enclosures, Hardware, Office
    • Integrated Circuits (ICs)
    • Isolators
    • LED/Optoelectronics
    • Passive
    • Power, Circuit Protection
    • Programmers
    • RF, Wireless
    • Semiconductors
    • Sensors, Transducers
    • Test Products
    • Tools
  • EE Resources
    • DesignFast
    • LEAP Awards
    • Oscilloscope Product Finder
    • White Papers
    • Webinars
  • EE Learning Center
  • Women in Engineering