STWBC-MC

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Digital controller for wireless battery chargers transmitters for Qi multicoil applications

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  • The STWBC-MC is the digital controller for the wireless battery charger (WBC) transmitters (TX) from STMicroelectronics optimized for the extended power profile (EPP) Wireless Power Consortium (WPC) multi-coil applications up to 15 W.

    It offers the most flexible and efficient solution for controlling the power transfer to a receiver (RX) in WBC-enabled applications such as smartphones, tablets and other battery-powered devices that use the electromagnetic induction for recharging.
    The TX is responsible for controlling the transmitting coil and generating the correct amount of power requested by the RX. The RX continuously provides the transmitter with the correct power level requested, by modulating the transmitter carrier through the controlled resistive or capacitive load. Generating the correct amount of power ensures the highest level of end-to-end efficiency due to reduced energy losses. It also helps maintaining a lower operational temperature.
    The TX can adapt to the amount of energy transferred by the coil by modulating the frequency, duty cycle or amplitude of the PWM voltage on the transmitting coil.
    The STWBC-MC is capable of bidirectional communication with the RX as specified by the WPC 1.2 protocol.

    Key Features

    • Digital controller for wireless battery charger transmitter
    • Multi-coil inductive transmitters optimized for:
      • Cell phones and smartphones
      • Tablets and phablets
      • Charging accessories
    • Support for Wireless Power Consortium (WPC) 1.2 EPP applications
      • Backward compatible with WPC BPP and 1.1 5W applications
    • Support for half-bridge topology with DC/DC
    • VIN range: 3 V to 5.5 V
      • Supports USB VIN
    • Active presence detector
    • Foreign object detection
    • Q-factor measurement
    • Parametric customization via GUI
    • Turnkey firmware solution
    • Peripherals
      • 10-bit ADC
      • UART interface
      • 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: 20 years at 55 °C after 1000 cycles at 55 °C
      • Data memory: 1 Kbyte true data EEPROM; data retention: 20 years at 55 °C after 1000 cycles at 85 °C
      • RAM: 6 Kbytes
    • Transmitter reference design:
      • Multi-coil EPP topology
      • 2-layer PCBs
      • Active object detection
      • Graphical user interface for application monitoring
    • Operating temperature: -40 °C up to 105 °C
    • Package: VFQFPN32 5 x 5 mm

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STMicroelectronics - STWBC-MC

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STWBC-MC
Active
VFQFPN 32 5x5x1.0 Industrial Ecopack2
STWBC-MCTR
Active
VFQFPN 32 5x5x1.0 Industrial Ecopack2

STWBC-MC

Package:

VFQFPN 32 5x5x1.0

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFQFPN 32 5x5x1.0

Grade

Industrial

RoHS Compliance Grade

Ecopack2

STWBC-MCTR

Package:

VFQFPN 32 5x5x1.0

Material Declaration**:

PDF XML

Marketing Status

Active

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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Grade
Budgetary Price (US$)*/Qty
More info
min
max
STWBC-MCTR No availability of distributors reported, please contact our sales office
Active
3A991A2 NEC Tape And Reel VFQFPN 32 5x5x1.0 -40 105 Industrial 3.225 / 1k
MORE INFO

Unit Price (US$):

3.225

Country of Origin:

CHINA

Output Power (W) (typ):

15

STWBC-MC Available at 2 distributors

Distributor availability ofSTWBC-MC

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 214 1 Order Now
MOUSER WORLDWIDE 358 1 Order Now

Distributor reported inventory date: 2020-12-02

Distributor Name

DIGIKEY

Stock

214

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

358

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-12-02

Free Sample Buy Direct
Active
3A991A2 NEC Tray VFQFPN 32 5x5x1.0 -40 105 Industrial 3.225 / 1k
MORE INFO

Unit Price (US$):

3.225

Country of Origin:

CHINA

Output Power (W) (typ):

15

STWBC-MCTR

Marketing Status

Active

ECCN (US)

3A991A2

Budgetary Price (US$)*/Qty

3.225 / 1k

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

VFQFPN 32 5x5x1.0

Operating Temperature (°C)

(min)

-40

(max)

105

Grade

Industrial

Budgetary Price (US$)* / Qty

3.225 / 1k

Country of Origin

CHINA

Output Power (W) (typ)

15

STWBC-MC

Marketing Status

Active

ECCN (US)

3A991A2

Budgetary Price (US$)*/Qty

3.225 / 1k

Distributor availability ofSTWBC-MC

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 214 1 Order Now
MOUSER WORLDWIDE 358 1 Order Now

Distributor reported inventory date: 2020-12-02

Distributor Name

DIGIKEY

Stock

214

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

358

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-12-02

ECCN (EU)

NEC

Packing Type

Tray

Package

VFQFPN 32 5x5x1.0

Operating Temperature (°C)

(min)

-40

(max)

105

Grade

Industrial

Budgetary Price (US$)* / Qty

3.225 / 1k

Country of Origin

CHINA

Output Power (W) (typ)

15

(*) 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