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Document Number: WCT15WTXAUTOFS REV 0
WCT-15WTXAUTO MULTI-COIL WIRELESS POWER TRANSMITTER BLOCK DIAGRAM
WCT-15WTXAUTO FEATURES AND BENEFITS
Car Battery
MOS Driver
CONSOLE
FreeMaster
WCT1011/3A
BCM
12 V/2 A
3.3 V/0.2 A
Coil Current
Q-voltage
Q-resonance
WPC DDM
Coil 0
Coil 1
Coil 2
400 nF
CAN
NFC
Buck-boost
Digital Control
Rail Voltage
Resonant Circuits
Full Bridge
Coil Selection
Sampling Circuit
DC-DC
LDO
V
IN
V
IN
V
OUT
V
OUT
Input Voltage
Temperature
Inverter Current/
Voltage
DDM RC
Circuits
Q-factor Detection
NXP SUPPORT
NXP provides all the necessary hardware
documentation: schematics, layout and
assembly files, as well as a complete
BOM. We also provide a firmware
example project with a certified library
that contains all the necessary wireless
charging control blocks. Users access the
library via an API which lets them interact
with parameters and settings contained
in the firmware, providing maximum
control to the users. Customers can use
a ready-to-use binary file from NXP or
build an application around the firmware
library.
DEVELOPMENT TOOLS
Eclipse-based CodeWarrior
®
Development Studio for Microcontrollers
A complete integrated development
environment (IDE) provides a highly visual
and automated framework to accelerate
the development of the most complex
embedded applications.
Easy-to-use Wireless Charging GUI
The easy-to-use FreeMASTER GUI
tool has configuration, calibration and
debugging functions to provide a user-
friendly design experience and reduce
time-to-market.
Features Benefits
Compliant with latest Extended Power
Profile WPC Qi
®
specification
Ensures end solution meets latest industry specification
Transfer efficiency greater than 70% Maximum energy transfer and lower thermal footprint
Meets Q-factor and latest power loss FOD
requirements, as well as NFC card protection
Ensures foreign objects are detected and provides safety
function
Supports any extended power profile
receiver
Provides a broad range of customer designs with a single
solution, including iPhone
®
8, iPhone X and Samsung
®
Fast
Charging
Low standby power Low-power operating modes translate into lower power
consumption during periods of inactivity
On-chip digital demodulation Lower system bill of materials (BOM) and greater performance
On-chip DC/DC buck-boost control Lower BOM and greater voltage accuracy
Supports operation frequency dithering
technology
Eliminates AM band and key FOB interference
Open architecture software solution Provides maximum design freedom and customer product
differentiation
Meets AEC-Q100 (Grade 2) guidelines Meets latest automotive requirements
