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STMicroelectronics STWBC-MC | Demoboard STEVAL-QINFCAU
Digital controller for wireless battery chargers transmitters for Qi multicoil applications
Overview
| Topology | Wireless Power Transfer |
| Input voltage | 3-55 V |
| IC revision | 1 |
Description
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.
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
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Product series | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | C | Tol. C | VR (V (DC)) | Operating Temperature | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | Fl (mm) | L (µH) | ISAT (A) | RDC (mΩ) | Version | Application | Interface Type | PCB Thickness (mm) | Mount | IR (mA) | Working Voltage (V (AC)) | H (mm) | Operation Force (Value) (g) | Electrical Life (Cycles) | Actuator Color | Vaporphase process | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (mA) | RDC max. (Ω) | Type | L1 (µH) | L2 (µH) | IR (mA) | ISAT (A) | RDC1 typ (Ω) | RDC2 typ (Ω) | RDC1 max (Ω) | RDC2 max (Ω) | fres (MHz) | Compliance | Size | L1 (µH) | L2 (µH) | L3 (µH) | IR DC1 (A) | IR DC2 (A) | IR DC3 (A) | RDC max. (Ω) | RDC2 max. (mΩ) | RDC3 max. (mΩ) | fres 1 (MHz) | fres 2 (MHz) | fres 3 (MHz) | Pins | Rows | G (mm) | Gender | IR (mA) | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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| 155124RS73200 | SPEC | 6 files | WL-SMSW SMT Mono-color Side View Waterclear | 624 | Red | 632 | 130 | 2 | AlInGaP | 120 | – | – | – | -40 °C up to +85 °C | – | – | – | 3.2 | 1.5 | – | – | – | – | – | – | – | – | SMT | – | – | 1 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1204 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Tape and Reel | ||
 | 742792625 | SPEC | 8 files | WE-CBF SMT EMI Suppression Ferrite Bead | – | – | – | – | – | – | – | – | – | – | -55 °C up to +125 °C | – | – | – | 1.6 | 0.8 | 0.3 | – | – | – | SMT | – | – | – | SMT | 2000 | – | 0.8 | – | – | – | – | 120 | 180 | 400 MHz | 2000 | 0.05 | High Current | – | – | 1500 | – | – | – | – | – | – | – | 0603 | – | – | – | – | – | – | 0.05 | – | – | – | – | – | – | – | – | – | 1500 | – | ||
 | 74404054022 | SPEC | 8 files | WE-LQS SMT Power Inductor | – | – | – | – | – | – | – | – | – | – | -40 °C up to +125 °C | – | – | – | 5 | 5 | – | 2.2 | 5.3 | 19 | – | – | – | – | – | – | – | 4 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 5040 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 3800 | – | ||
 | 7447709680 | SPEC | 8 files | WE-PD SMT Power Inductor | – | – | – | – | – | – | – | – | – | – | -40 °C up to +125 °C | – | – | – | 12 | 12 | – | 68 | 3.6 | – | Standard | – | – | – | – | – | – | 10 | – | – | – | – | – | – | – | – | 0.089 | – | – | – | – | – | – | – | – | – | – | – | 1210 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 3200 | – | ||
 | 744871004 | SPEC | 8 files | WE-DD SMT Shielded Coupled Inductor | – | – | – | – | – | – | – | – | – | – | -40 °C up to +125 °C | – | – | – | 12.5 | 12.5 | – | 4.7 | 8 | – | – | – | – | – | – | – | – | 6.5 | – | – | – | – | – | – | – | 3000 | 0.028 | – | 4.7 | 4.7 | 3000 | 8 | 0.023 | 0.023 | 0.028 | 0.028 | 20 | – | 1260 | – | – | – | – | – | – | – | – | – | 20 | – | – | – | – | – | – | 3000 | – | ||
 | 885012108021 | SPEC | 8 files | WCAP-CSGP MLCCs 25 V(DC) | – | – | – | – | – | – | – | 10 µF | ±20% | 25 | -55 °C up to +85 °C | 10 | 0.01 GΩ | X5R Class II | 3.2 | 1.6 | 0.6 | – | – | – | – | – | – | – | – | – | – | 1.6 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1206 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 7" Tape & Reel | ||
| 885012109014 | SPEC | 8 files | WCAP-CSGP MLCCs 25 V(DC) | – | – | – | – | – | – | – | 22 µF | ±20% | 25 | -55 °C up to +85 °C | 5 | 0.005 GΩ | X5R Class II | 3.2 | 2.5 | 0.6 | – | – | – | – | – | – | – | – | – | – | 2.5 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1210 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 7" Tape & Reel | ||
 | 434121043836 | SPEC | – | 5 files | WS-TASV SMT Tact Switch 6.0x3.5 mm | – | – | – | – | – | – | – | – | – | 12 | -40 °C up to +85 °C | – | 100 MΩ | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 4.3 | 360 | 50000 | Salmon | not specified | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 50 | Tape and Reel | |
 | 629105136821 | SPEC | – | 6 files | WR-COM Micro USB 2.0 SMT Type B Horizontal 5 Contacts | – | – | – | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | 1000 MΩ | – | – | – | – | – | – | – | – | Micro USB 2.0 | Type B | – | SMT | 1000 | 30 | – | – | – | – | – | – | – | – | – | – | Horizontal | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 5 | – | – | Receptacle | 1000 | Tape and Reel | |
 | 632723300011 | SPEC | – | 6 files | WR-COM USB 3.1 Type C Receptacle Horizontal THR / SMT | – | – | – | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | 1000 MΩ | – | – | – | – | – | – | – | – | USB 3.1 | Type C | 1.6 | THR | – | 20 | – | – | – | – | – | – | – | – | – | – | Horizontal | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 24 | – | 1.9 | Receptacle | 5000 | Tape and Reel | |
 | 61300311121 | SPEC | – | 6 files | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | 1000 MΩ | – | 7.62 | – | – | – | – | – | – | – | – | – | THT | – | 250 | – | – | – | – | – | – | – | – | – | – | Straight | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 3 | Single | – | Pin Header | 3000 | Bag | |
| 61300411121 | SPEC | – | 6 files | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | 1000 MΩ | – | 10.16 | – | – | – | – | – | – | – | – | – | THT | – | 250 | – | – | – | – | – | – | – | – | – | – | Straight | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 4 | Single | – | Pin Header | 3000 | Bag | |
 | 760308103147 | SPEC | 7 files | WE-WPCC Wireless Power Array | – | – | – | – | – | – | – | – | – | – | -20 °C up to +105 °C | – | – | – | 100 | 55 | – | – | – | – | – | – | – | – | THT | 9000 | – | 5.2 | – | – | – | – | – | – | – | – | – | – | – | – | – | 18 | – | – | – | – | – | MP-A8 3-coil array | 100 x 55 x 5.2 mm | 8.5 | 7.5 | 8.5 | 9 | 10 | 9 | 0.056 | 56 | 56 | 11 | 11 | 11 | – | – | – | – | – | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Product series | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | C | Tol. C | VR (V (DC)) | Operating Temperature | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | Fl (mm) | L (µH) | ISAT (A) | RDC (mΩ) | Version | Application | Interface Type | PCB Thickness (mm) | Mount | IR (mA) | Working Voltage (V (AC)) | H (mm) | Operation Force (Value) (g) | Electrical Life (Cycles) | Actuator Color | Vaporphase process | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (mA) | RDC max. (Ω) | Type | L1 (µH) | L2 (µH) | IR (mA) | ISAT (A) | RDC1 typ (Ω) | RDC2 typ (Ω) | RDC1 max (Ω) | RDC2 max (Ω) | fres (MHz) | Compliance | Size | L1 (µH) | L2 (µH) | L3 (µH) | IR DC1 (A) | IR DC2 (A) | IR DC3 (A) | RDC max. (Ω) | RDC2 max. (mΩ) | RDC3 max. (mΩ) | fres 1 (MHz) | fres 2 (MHz) | fres 3 (MHz) | Pins | Rows | G (mm) | Gender | IR (mA) | Packaging | Samples |
|---|