Product overview
Description
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.
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All 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
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ST's Wireless battery charging demo
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All tools & software
All resources
| Resource title | Latest update |
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Product Specifications (1)
| Resource title | Latest update | |||
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| 11 Oct 2017 |
11 Oct 2017
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Flyers (1)
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| 26 Feb 2020 |
26 Feb 2020
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Brochures (2)
| Resource title | Latest update | |||
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| 29 Jul 2020 |
29 Jul 2020
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| 23 Nov 2020 |
23 Nov 2020
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EDA Symbols, Footprints and 3D Models
STMicroelectronics - STWBC-EP
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Footprints
3D models
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| STWBC-EP |
NRND
|
VFQFPN 32 5x5x1.0 mm | Industrial | Ecopack2 | |
| STWBC-EPTR |
NRND
|
VFQFPN 32 5x5x1.0 mm | Industrial | 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 | Country of Origin | Output Power (W) (typ) | Budgetary Price (US$)*/Qty | More info | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | ||||||||||||||
| STWBC-EP | 2 distributors | Buy Direct |
NRND
|
3A991A2 | NEC | Tray | VFQFPN 32 5x5x1.0 mm | -40 | 105 | Industrial | CHINA | 15 | 2.875 / 1k | ||
| STWBC-EPTR | 3 distributors | Buy Direct |
NRND
|
3A991A2 | NEC | Tape And Reel | VFQFPN 32 5x5x1.0 mm | -40 | 105 | Industrial | CHINA | 15 | 2.875 / 1k | ||
(*) 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
