STWBC-EP

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Digital controller for wireless battery charger transmitters (WBC) in 15 W medium power applications

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  • The STWBC-EP is the digital controller for the wireless battery charger (WBC) transmitters (TX) from STMicroelectronics optimized for Extended Power Profile (EPP) Wireless Power Consortium (WPC) 1.2 certified 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-EP 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
    • 15 W single coil inductive transmitters optimized for:
      • Cell phones and smartphones
      • Tablets and phablets
      • Charging accessories
    • Support for Wireless Power Consortium (WPC) 1.2 EPP 15 W certified applications
      • Backward compatible with 5 W WPC 1.1 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-Kbyte 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:
      • WPC Qi 1.2.3 certified
      • MP-A10 single coil 15 W topology
      • Evaluation board order code: STEVAL-ISB044V1
      • 2-layer PCBs
      • Active object detection
      • Graphical User Interface for application monitoring
    • Operating temperature: -40 °C up to 105 °C
    • Package: VFQFPN32 - 5 x 5mm

All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      STSW-ISB044FW

      Active

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

      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-ISB044FW

      Description:

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

      EVALSTWBC-EP

      Active

      Qi MP-A15 15W wireless charger TX evaluation kit based on STWBC-EP

      PSU and Converter Solution Eval Boards --

      STEVAL-ISB044V1

      Active

      Qi MP-A10 15 W wireless charger TX evaluation kit based on STWBC-EP

      PSU and Converter Solution Eval Boards ST
      EVALSTWBC-EP

      Description:

      Qi MP-A15 15W wireless charger TX evaluation kit based on STWBC-EP
      STEVAL-ISB044V1

      Description:

      Qi MP-A10 15 W wireless charger TX evaluation kit based on STWBC-EP

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STMicroelectronics - STWBC-EP

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Quality and Reliability

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

STWBC-EP

Package:

VFQFPN 32 5x5x1.0

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFQFPN 32 5x5x1.0

Grade

Industrial

RoHS Compliance Grade

Ecopack2

STWBC-EPTR

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-EP Available at 2 distributors

Distributor availability ofSTWBC-EP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 343 1 Order Now
MOUSER WORLDWIDE 2197 1 Order Now

Distributor reported inventory date: 2020-11-30

Distributor Name

DIGIKEY

Stock

343

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

2197

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-11-30

Free Sample Buy Direct
Active
3A991A2 NEC Tray VFQFPN 32 5x5x1.0 -40 105 Industrial 2.875 / 1k
MORE INFO

Unit Price (US$):

2.875

Country of Origin:

CHINA

Output Power (W) (typ):

15

STWBC-EPTR Available at 3 distributors

Distributor availability ofSTWBC-EPTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 185 1 Order Now
MOUSER WORLDWIDE 15 1 Order Now
Farnell Element14 EUROPE 2785 1 Order Now

Distributor reported inventory date: 2020-11-30

Distributor Name

DIGIKEY

Stock

185

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

15

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2785

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-11-30

Buy Direct
Active
3A991A2 NEC Tape And Reel VFQFPN 32 5x5x1.0 -40 105 Industrial 2.875 / 1k
MORE INFO

Unit Price (US$):

2.875

Country of Origin:

CHINA

Output Power (W) (typ):

15

STWBC-EP

Marketing Status

Active

ECCN (US)

3A991A2

Budgetary Price (US$)*/Qty

2.875 / 1k

Distributor availability ofSTWBC-EP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 343 1 Order Now
MOUSER WORLDWIDE 2197 1 Order Now

Distributor reported inventory date: 2020-11-30

Distributor Name

DIGIKEY

Stock

343

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

2197

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-11-30

ECCN (EU)

NEC

Packing Type

Tray

Package

VFQFPN 32 5x5x1.0

Operating Temperature (°C)

(min)

-40

(max)

105

Grade

Industrial

Budgetary Price (US$)* / Qty

2.875 / 1k

Country of Origin

CHINA

Output Power (W) (typ)

15

STWBC-EPTR

Marketing Status

Active

ECCN (US)

3A991A2

Budgetary Price (US$)*/Qty

2.875 / 1k

Distributor availability ofSTWBC-EPTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 185 1 Order Now
MOUSER WORLDWIDE 15 1 Order Now
Farnell Element14 EUROPE 2785 1 Order Now

Distributor reported inventory date: 2020-11-30

Distributor Name

DIGIKEY

Stock

185

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

15

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2785

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-11-30

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

2.875 / 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