STWBC-MC

Digital controller for wireless battery chargers transmitters for Qi multicoil applications

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.

主な特徴

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
V_IN range: 3 V to 5.5 V
- Supports USB V_IN
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

リソース

技術文書

製品スペック

	Description	バージョン	サイズ
	DS12373: Digital controller for wireless battery chargers transmitters for Qi multicoil applications	2.0	570 KB

Publications and Collaterals

パンフレット

	Description	バージョン	サイズ
	パワー･マネージメントガイド 2017	09.2017	3 MB
	Products and solutions for Wearable devices	1.0	1 MB

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製品型番	製造元	Description
STEVAL-ISB047V1	ST	Qi certified 3-coil 15 W wireless charger TX evaluation kit based on STWBC-MC

ビデオ

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サンプル & 購入

製品型番	Marketing Status	パッケージ	Grade	ECCN (US)	Unit Price (US$) *	数量	Country of Origin	Operating Temperature (°C) (max)	Operating Temperature (°C) (min)	Output Power (W) (typ)	More info	Order from ST	Order from Distributors
STWBC-MCTR	Active : Product is in volume production	VFQFPN 32 5x5x1.0	Industrial	3A991A2	3.225	1000	PHILIPPINES	105	-40	15	MORE INFO		No availability reported, please contact our Sales office
STWBC-MC	Active : Product is in volume production	VFQFPN 32 5x5x1.0	Industrial	3A991A2	3.225	1000	PHILIPPINES	105	-40	15	MORE INFO	Free Sample 買い物かごに追加	DISTRIBUTOR AVAILABILITY

(*) 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

品質 & 信頼性

製品型番	Marketing Status	パッケージ	Grade	RoHS Compliance Grade	Material Declaration**
STWBC-MCTR	アクティブ	VFQFPN 32 5x5x1.0	インダストリアル	Ecopack2
STWBC-MC	アクティブ	VFQFPN 32 5x5x1.0	インダストリアル	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.