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reference designSTWBC-MC | Demoboard STEVAL-QINFCAU

STMicroelectronics STWBC-MC | Demoboard STEVAL-QINFCAU

Digital controller for wireless battery chargers transmitters for Qi multicoil applications

Overview

TopologyWireless Power Transfer
Input voltage3-55 V
IC revision1

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

Parts approved by STMicroelectronics

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Order Code
Data­sheet
Simu­lation
Downloads
Status
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)
Packaging
L(µH)
IR(mA)
ISAT(A)
RDC(mΩ)
IRP,40K(A)
VOP(V)
Version
Application
Interface Type
Variant
Gender
Pins
Mount
PCB Thickness(mm)
Working Voltage(V (AC))
G(mm)
H(mm)
Operation Force(g)
Electrical Life(Cycles)
Actuator Color
Washable
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)
P(W)
SamplesAvailability & Sample
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155124VS73200
SPECWL-SMSW SMT Mono-color Side View Waterclear, 573 nm, Bright Green
Simu­lation
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWL-SMSW SMT Mono-color Side View Waterclear
Dominant Wavelength [typ.]573 nm
Emitting ColorBright Green 
Peak Wavelength [typ.]575 nm
Luminous Intensity [typ.]50 mcd
Forward Voltage [typ.]2 V
Chip TechnologyAlInGaP 
Viewing Angle Phi 0° [typ.]120 °
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Operating Temperature -40 °C up to +85 °C
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Length3.2 mm
Width1.5 mm
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155124RS73200
SPECWL-SMSW SMT Mono-color Side View Waterclear, 624 nm, Red
Simu­lation
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWL-SMSW SMT Mono-color Side View Waterclear
Dominant Wavelength [typ.]624 nm
Emitting ColorRed 
Peak Wavelength [typ.]632 nm
Luminous Intensity [typ.]130 mcd
Forward Voltage [typ.]2 V
Chip TechnologyAlInGaP 
Viewing Angle Phi 0° [typ.]120 °
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Operating Temperature -40 °C up to +85 °C
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Length3.2 mm
Width1.5 mm
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742792625
SPECWE-CBF SMT EMI Suppression Ferrite Bead, –, –
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-CBF SMT EMI Suppression Ferrite Bead
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Operating Temperature -55 °C up to +125 °C
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Length1.6 mm
Width0.8 mm
Pad Dimension0.3 mm
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Rated Current1500 mA
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VersionSMT 
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MountSMT 
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Height0.8 mm
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Impedance @ 100 MHz120 Ω
Maximum Impedance180 Ω
Maximum Impedance400 MHz 
Rated Current 22000 mA
DC Resistance0.05 Ω
TypeHigh Current 
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Rated Current1500 mA
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Size0603 
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DC Resistance [1]0.05 Ω
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74404054022
SPECWE-LQS SMT Power Inductor, –, –
Simu­lation
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-LQS SMT Power Inductor
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Operating Temperature -40 °C up to +125 °C
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Length5 mm
Width5 mm
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Inductance2.2 µH
Rated Current3800 mA
Saturation Current5.3 A
DC Resistance19 mΩ
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Operating Voltage120 V
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MountSMT 
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Height4 mm
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Self Resonant Frequency77 MHz
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Size5040 
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7447709680
SPECWE-PD SMT Power Inductor, –, –

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

Simu­lation
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-PD SMT Power Inductor
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Operating Temperature -40 °C up to +125 °C
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Length12 mm
Width12 mm
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Inductance68 µH
Rated Current3200 mA
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Performance Rated Current3.9 A
Operating Voltage120 V
VersionStandard 
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Pins2 
MountSMT 
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Height10 mm
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DC Resistance0.089 Ω
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Self Resonant Frequency5.5 MHz
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Size1210 
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744871004
SPECWE-DD SMT Shielded Coupled Inductor, –, –
Simu­lation
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-DD SMT Shielded Coupled Inductor
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Operating Temperature -40 °C up to +125 °C
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Length12.5 mm
Width12.5 mm
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Inductance4.7 µH
Rated Current3000 mA
Saturation Current8 A
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Operating Voltage80 V
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Height6.5 mm
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Rated Current 23000 mA
DC Resistance0.028 Ω
TypeCrossed 
Inductance 14.7 µH
Inductance 24.7 µH
Rated Current3000 mA
Saturation Current8 A
DC Resistance 10.023 Ω
DC Resistance 20.023 Ω
DC Resistance 10.028 Ω
DC Resistance 20.028 Ω
Self Resonant Frequency20 MHz
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Size1260 
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Self Resonant Frequency [1]20 MHz
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885012108021
SPECWCAP-CSGP MLCCs 25 V(DC), –, –
Simu­lation
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 25 V(DC)
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Capacitance10 µF
Capacitance±20% 
Rated Voltage25 V (DC)
Operating Temperature -55 °C up to +85 °C
Dissipation Factor10 %
Insulation Resistance0.01 GΩ
Ceramic TypeX5R Class II 
Length3.2 mm
Width1.6 mm
Pad Dimension0.6 mm
Packaging7" Tape & Reel 
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Height1.6 mm
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885012109014
SPECWCAP-CSGP MLCCs 25 V(DC), –, –
Simu­lation
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 25 V(DC)
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Capacitance22 µF
Capacitance±20% 
Rated Voltage25 V (DC)
Operating Temperature -55 °C up to +85 °C
Dissipation Factor10 %
Insulation Resistance0.005 GΩ
Ceramic TypeX5R Class II 
Length3.2 mm
Width2.5 mm
Pad Dimension0.6 mm
Packaging7" Tape & Reel 
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Height2.5 mm
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434121043836
SPECWS-TASV SMT Tact Switch 6.0x3.5 mm, –, –
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Downloads6 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWS-TASV SMT Tact Switch 6.0x3.5 mm
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Rated Voltage12 V (DC)
Operating Temperature -40 °C up to +85 °C
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Insulation Resistance100 MΩ
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PackagingTape and Reel 
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Rated Current50 mA
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Height4.3 mm
Operation Force360 g
Electrical Life50000 Cycles
Actuator ColorSalmon 
WashableNo 
Vaporphase processnot specified 
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629105136821
SPECWR-USB Mini/Micro Connectors, –, –
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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-USB Mini/Micro Connectors
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Operating Temperature -40 °C up to +105 °C
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Insulation Resistance1000 MΩ
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PackagingTape and Reel 
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Rated Current1000 mA
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ApplicationMicro USB 2.0 
Interface TypeType B 
Variantwith Pads & Pegs 
GenderReceptacle 
Pins5 
MountSMT 
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Working Voltage30 V (AC)
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TypeHorizontal 
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632723300011
SPECWR-USB Type C Connectors, –, –
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Downloads7 files

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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-USB Type C Connectors
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Operating Temperature -40 °C up to +105 °C
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Insulation Resistance1000 MΩ
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PackagingTape and Reel 
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Rated Current5000 mA
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ApplicationUSB 3.1 
Interface TypeType C 
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GenderReceptacle 
Pins24 
MountTHR 
PCB Thickness1.6 mm
Working Voltage48 V (AC)
Pin length1.9 mm
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TypeHorizontal 
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61300311121
SPECWR-PHD Pin Header - Single, –, –
Simu­lation–
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
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Operating Temperature -40 °C up to +105 °C
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Insulation Resistance1000 MΩ
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Length7.62 mm
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PackagingBag 
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Rated Current3000 mA
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GenderPin Header 
Pins3 
MountTHT 
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Working Voltage250 V (AC)
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TypeStraight 
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61300411121
SPECWR-PHD Pin Header - Single, –, –
Simu­lation–
Availability
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
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Operating Temperature -40 °C up to +105 °C
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Insulation Resistance1000 MΩ
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Length10.16 mm
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PackagingBag 
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Rated Current3000 mA
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GenderPin Header 
Pins4 
MountTHT 
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Working Voltage250 V (AC)
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TypeStraight 
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760308103147
SPECWE-WPCC Wireless Power Array, –, –
Simu­lation
Availability
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-WPCC Wireless Power Array
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Operating Temperature -20 °C up to +105 °C
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Length100 mm
Width55 mm
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MountTHT 
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Height5.2 mm
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Saturation Current18 A
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ComplianceMP-A8 3-coil array 
Size100 x 55 x 5.2 mm 
Inductance [1]8.5 µH
Inductance [2]7.5 µH
Inductance [3]8.5 µH
Rated Current DC [1]9 A
Rated Current DC [2]10 A
Rated Current DC [3]9 A
DC Resistance [1]0.056 Ω
DC Resistance [2]56 mΩ
DC Resistance [3]56 mΩ
Self Resonant Frequency [1]11 MHz
Self Resonant Frequency [2]11 MHz
Self Resonant Frequency [3]11 MHz
Power Capability [1]150 W
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