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Advanced Wireless-Charging Chip from STMicroelectronics Enables Faster Charging of Smartphones and Tablets

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11/09/2017 | 03:02pm CET


STMicro Wireless Charging Chip_IMAGE.jpg
STMicro Wireless Charging Chip_IMAGE

  • New charging controller supports the latest industry standard (Qi Extended Power) for faster charging of smartphones and tablets
  • Patented detection and safety features, with best-in-class standby power, ensure superior user experience and efficiency


Geneva, November 9, 2017 - STMicroelectronics (NYSE: STM), a global semiconductor leader serving customers across the spectrum of electronics applications, is powering up wireless charging for mobile devices by introducing one of the world's first chips to support the latest industry standard for faster charging.

Nowadays, people are using their smartphones and tablets so intensively that many need to top up battery power several times a day. With wireless charging, users don't need to carry the charger or a bulky power bank, and can charge their electronic devices as fast as with a cable. Major mobile manufacturers are committing to wireless charging by joining the industry alliances and launching compatible products.

Users on the move, who put their mobiles down to charge for a few minutes - say, during a break or in a meeting -- need the device to be ready to go again when they are. To enable this, the Wireless Power Consortium (WPC) that manages the Qi specification -- a widely adopted industry standard -- has introduced the Extended Power profile for faster charging. By raising the maximum charging power from 5W to 15W, this new profile enables devices to be charged up to three times more quickly.

One of the market's first wireless-charging controllers to support Qi Extended Power, ST's STWBC-EP combines best-in-class energy efficiency, consuming just 16mW in standby and able to wirelessly transfer more than 80% of the total input power, with unique features created by ST to enhance the user experience. These include a patented solution enhancing active presence detection to wake the system quickly when a compatible object is presented for charging. The patented technology also enhances the performance of Foreign Object Detection (FOD), to cut power and prevent overheating if objects containing metals are brought too close to the charger. Other unique innovations enhance power control and energy transfer to maximize efficiency and ease of use.

"ST's Advanced Wireless-Charging chip enables manufacturers to create new, high-power products that offer superior features and efficiency," said Domenico Arrigo, General Manager, Industrial and Power Conversion Division, STMicroelectronics. "The Qi Extended Power support dramatically shortens charging time and our patented detection and safety innovations greatly improve safety and ease of use."

The STWBC-EP provides the level of integration allowing to simplify charger design while providing the flexibility to work with supply voltages ranging from 5V USB power up to 12V.

To help accelerate time to market for product developers, ST has created an associated reference design with a Qi 15W ready-built transmitter board and documentation to get started. ST also has a 15W receiver chip (STWLC33) for use in high-speed chargeable devices, which developers can use to complete their applications.

ST's new wireless-charging chip will be showcased at the Qi Wireless Power Developers Conference and Tradeshow held in San Francisco on November 16-17.

The STWBC-EP is available now, as a 32-lead QFN (5mm x 5mm) device, priced from $3.175 for 1000 pieces.

For further information refer to www.st.com/wbc


Technical Notes for Editors:

The STWBC-EP contains a step-up (boost) DC/DC converter and a controller, with the Qi charging algorithms already implemented in firmware to save any need to integrate software and an additional microcontroller in their designs. Together, the converter and controller generate the input power and the control signals for an external half-bridge power stage that drives the charging transmitter antenna. This architecture gives designers flexibility to optimize the external half bridge and its associated gate drivers for use with any supply voltage from 5V to 12V, and to ensure compatibility with USB quick chargers.

The evaluation kit, STEVAL-ISB044V1, includes a 15W Qi MP-A10 reference design, 12V 2A AC/DC adapter, a USB/UART dongle for connection to the PC and USB cable, as well as pre-loaded firmware. In addition to the supporting documentation, a graphical PC-based configuration tool is also provided to help customize settings.


About STMicroelectronics

ST is a global semiconductor leader delivering intelligent and energy-efficient products and solutions that power the electronics at the heart of everyday life. ST's products are found everywhere today, and together with our customers, we are enabling smarter driving and smarter factories, cities and homes, along with the next generation of mobile and Internet of Things devices.

By getting more from technology to get more from life, ST stands for life.augmented.

In 2016, the Company's net revenues were $6.97 billion, serving more than 100,000 customers worldwide. Further information can be found at www.st.com

For Press Information Contact:

Michael Markowitz
Director of Technical Media Relations
+1 781 591 0354
[email protected]


A photo accompanying this announcement is available at http://www.globenewswire.com/NewsRoom/AttachmentNg/5454eef6-97f7-4640-aaf0-1b89e63e9794



© GlobeNewswire 2017
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Financials ($)
Sales 2017 8 129 M
EBIT 2017 945 M
Net income 2017 757 M
Finance 2017 265 M
Yield 2017 0,99%
P/E ratio 2017 29,30
P/E ratio 2018 22,38
EV / Sales 2017 2,70x
EV / Sales 2018 2,35x
Capitalization 22 174 M
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Nicolas Dufourcq Chairman-Supervisory Board
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Orio Bellezza President-Global Technology & Manufacturing
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