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Wireless chargers are expected to become ubiquitous in hotels, airports, cafes and other public places as they enable to top up the batteries of portable and wearable devices, letting the user forget about cables.

Wireless ChargerIn a wireless battery charging system, power is transferred by electromagnetic induction (inductive power transfer) between a transmitting pad - or dongle (TX) - and the battery-powered device (RX), such as a smartphone, smartwatch or sports gear.

The power transmitter unit controls the current in the transmitting coil to transfer the correct amount of power as required by the receiver unit that continuously provides this information to the transmitter by modulating the transmitter carrier frequency through controlled resistive or capacitive load insertion.

Generating the correct amount of power guarantees the highest level of end-to-end energy efficiency and helps limit the device's operating temperature.

We have a range of wireless battery charging solutions including transmitters and receivers providing low stand-by power and features like foreign objects detection (FOD). ST also offers evaluation and development tools and reference designs to help develop high-efficiency and compact wireless chargers compliant with the most common wireless charging standards including Qi and AirFuel.

Wireless charger block diagram

All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      STSW-ISB042GUI

      Active

      Graphical user interface for the STEVAL-ISB042V1 evaluation board based on STWLC33

      Evaluation Tool Software ST

      STSW-ISB044FW

      Active

      Firmware for the STEVAL-ISB044V1 wireless power transmitter evaluation board based on STBWC-EP

      Evaluation Tool Software ST

      STSW-ISB045FW

      Active

      Firmware for the STEVAL-ISB045V1 wireless charger transmitter evaluation kit based on STWBC-WA

      Evaluation Tool Software ST

      STSW-STWBCFWDT

      Active

      STWBC firmware downloader tool

      Evaluation Tool Software ST

      STSW-STWBCGUI

      Active

      Graphical user interface for wireless power transmitter evaluation boards based on the STWBC chip family

      Evaluation Tool Software ST
      STSW-ISB042GUI

      Description:

      Graphical user interface for the STEVAL-ISB042V1 evaluation board based on STWLC33
      STSW-ISB044FW

      Description:

      Firmware for the STEVAL-ISB044V1 wireless power transmitter evaluation board based on STBWC-EP
      STSW-ISB045FW

      Description:

      Firmware for the STEVAL-ISB045V1 wireless charger transmitter evaluation kit based on STWBC-WA
      STSW-STWBCFWDT

      Description:

      STWBC firmware downloader tool
      STSW-STWBCGUI

      Description:

      Graphical user interface for wireless power transmitter evaluation boards based on the STWBC chip family
    • Part number
      Status
      Description
      Type
      Supplier

      ST Diode Finder

      Active

      Diode product finder application for Android and iOS

      Finders Apps ST

      ST Voltage Regulator Finder

      Active

      Linear and switching voltage regulators and voltage reference applications for smartphones and tablets

      Finders Apps ST
      ST Diode Finder

      Description:

      Diode product finder application for Android and iOS
      ST Voltage Regulator Finder

      Description:

      Linear and switching voltage regulators and voltage reference applications for smartphones and tablets

eDesignSuite

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