Digital controller for wireless battery charger transmitters for wearable and smart watches applications

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  • The STWBC-WA is STMicroelectronics’ wireless battery charger transmitter application optimized for wearable usage.

    Thanks to its 5 V native supply, the STWBC-WA device is ideal to operate with USB power supplies.
    Wireless battery charging systems replace the traditional power supply cable by means of electromagnetic induction between a transmitting pad or dongle (TX) and a battery-powered unit (RX), such as a smartwatch or sports gear.
    The power transmitter unit is responsible for controlling the transmitting coil and generating the correct amount of power requested by the receiver unit. The receiver unit continuously provides the transmitter the correct power level requested, by modulating the transmitter carrier through controlled resistive or capacitive insertion. Generating the correct amount of power guarantees the highest level of end-to-end efficiency due to reduced energy waste. It also helps to maintain a lower operational temperature.
    The digital wireless battery transmitter can adapt to the amount of energy transferred by the coil by modulating the frequency, duty cycles or coil input voltage.

    Key Features

    • Digital controller for wireless battery charger transmitters
    • Optimized for < 3 W applications
      • Smartwatches and healthcare
      • Internet of Things (IoT) battery-powered smart devices
      • Remote controllers
    • Cost effective half-bridge topology with integrated drivers
    • Optional full-bridge configuration for 3 W applications
    • VIN range: 3 V to 5.5 V
      • Supports USB VIN
    • Active presence detector
    • Parametric customization via graphical interface
    • 2 firmware options:
      • Turnkey solution for quick design
      • APIs available for application customization
    • Peripherals available via APIs
      • ADC, with 10-bit precision
      • UART
      • I2C master fast/slow speed rate
      • GPIOs
    • Memory
      • Flash and EEPROM with read-while-write (RWW) and Error Correction Code (ECC)
      • Program memory: 32 Kbytes Flash; data retention: 15 years at 85 °C after 10 kcycles at 25 °C
      • Data memory: 1 Kbyte true data EEPROM; data retention: 15 years at 85 °C after 100 kcycles at 85 °C
      • RAM: 6 Kbytes
    • Transmitter reference design:
      • Evaluation board order code: STEVAL-ISB038V1T
      • 2-layer PCBs
      • Active object detection
      • Graphical user interface for application monitoring
      • Interoperable with receiver: STEVAL-ISB038V1R
    • Operating temperature
      • -40 °C up to 105 °C
    • パッケージ
      • VFQFPN32

サンプル & 購入

製品型番
製品ステータス
パッケージ
グレード
ECCN (US)
概算価格(USS)
数量
Country of Origin
Operating Temperature (°C) (max)
More info
販売代理店からオーダー
STからオーダー
STWBC-WATR
アクティブ
VFQFPN 32 5x5x1.0 Industrial 3A991A2 2.5125 1000 PHILIPPINES 105
MORE INFO

Operating Temperature (°C) (min):

-40

Output Power (W) (typ):

2.5

販売代理店に在庫がない場合は、STのセールスオフィスまでお問い合わせください
STWBC-WA
アクティブ
VFQFPN 32 5x5x1.0 Industrial 3A991A2 2.5125 1000 PHILIPPINES 105
MORE INFO

Operating Temperature (°C) (min):

-40

Output Power (W) (typ):

2.5

在庫チェック

Distributor availability ofSTWBC-WA

代理店名
地域 在庫 最小発注 Third party link
DIGIKEY WORLDWIDE 2 1 Order Now
RS COMPONENTS EUROPE 99 1 Order Now

代理店レポートによる在庫データ: 2019-11-12

代理店名

DIGIKEY

在庫

2

Min.Order

1

地域

WORLDWIDE Order Now

RS COMPONENTS

在庫

99

Min.Order

1

地域

EUROPE Order Now

代理店レポートによる在庫データ: 2019-11-12

STWBC-WATR

製品ステータス

アクティブ

パッケージ

VFQFPN 32 5x5x1.0

Unit Price (US$)

2.5125*

グレード

Industrial

ECCN (US)

3A991A2

Unit Price (US$)

2.5125

数量

1000

Country of Origin

PHILIPPINES

(max)

105

Operating Temperature (°C)

(最小値)

-40

Output Power (W) (typ)

2.5

STWBC-WA

製品ステータス

アクティブ

パッケージ

VFQFPN 32 5x5x1.0

Unit Price (US$)

2.5125*

Distributor availability ofSTWBC-WA

代理店名
地域 在庫 最小発注 Third party link
DIGIKEY WORLDWIDE 2 1 Order Now
RS COMPONENTS EUROPE 99 1 Order Now

代理店レポートによる在庫データ: 2019-11-12

代理店名

DIGIKEY

在庫

2

Min.Order

1

地域

WORLDWIDE Order Now

RS COMPONENTS

在庫

99

Min.Order

1

地域

EUROPE Order Now

代理店レポートによる在庫データ: 2019-11-12

グレード

Industrial

ECCN (US)

3A991A2

Unit Price (US$)

2.5125

数量

1000

Country of Origin

PHILIPPINES

(max)

105

Operating Temperature (°C)

(最小値)

-40

Output Power (W) (typ)

2.5

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Education

This product is labeled Sustainable Technology.

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電源 & コンバータ

開発ツール・ハードウェア

ソフトウェア製品

    • 製品型番

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

      STWBC firmware downloader tool

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

評価ツール

    • 製品型番

      2.5 W wireless charger transmitter evaluation kit

00 ファイルがダウンロード用に選択されています

技術文書

    • 概要 バージョン サイズ アクション
      DS11797
      Digital controller for wireless battery charger transmitters for wearable and smartwatch applications
      1.0
      787.37 KB
      PDF
      DS11797

      Digital controller for wireless battery charger transmitters for wearable and smartwatch applications

    • 概要 バージョン サイズ アクション
      AN5223
      2.5W wireless charger transmitter evaluation board deconfiguration guide for 1-watt wearable applications
      1.0
      4.08 MB
      PDF
      AN4900
      How to tune STEVAL-ISB038V1 wireless charging evaluation kit for wearable applications
      4.0
      1.1 MB
      PDF
      AN5223

      2.5W wireless charger transmitter evaluation board deconfiguration guide for 1-watt wearable applications

      AN4900

      How to tune STEVAL-ISB038V1 wireless charging evaluation kit for wearable applications

関連資料

    • 概要 バージョン サイズ アクション
      STWBC-WA - Wireless power for IoT devices 06.2018
      921.66 KB
      PDF
      IoT機器用 ワイヤレス電源 07.2017
      809.52 KB
      PDF

      STWBC-WA - Wireless power for IoT devices

      IoT機器用 ワイヤレス電源

    • 概要 バージョン サイズ アクション
      Power Management Guide 06.2019
      3.86 MB
      PDF
      Products and solutions for Wearable devices 1.0
      2.32 MB
      PDF

      Power Management Guide

      Products and solutions for Wearable devices

製品型番 製品ステータス パッケージ グレード RoHSコンプライアンスグレード Material Declaration**
STWBC-WA
アクティブ
VFQFPN 32 5x5x1.0 インダストリアル Ecopack2
STWBC-WATR
アクティブ
VFQFPN 32 5x5x1.0 インダストリアル Ecopack2

STWBC-WA

Package:

VFQFPN 32 5x5x1.0

Material Declaration**:

PDF XML

Marketing Status

アクティブ

Package

VFQFPN 32 5x5x1.0

Grade

Industrial

RoHS Compliance Grade

Ecopack2

STWBC-WATR

Package:

VFQFPN 32 5x5x1.0

Material Declaration**:

PDF XML

Marketing Status

アクティブ

Package

VFQFPN 32 5x5x1.0

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.