Freescale Semiconductor
Data Sheet
Document Number: WCT1101DS
Rev. 1.0, 02/2014
Consumer Low Power Wireless
Transmitter Controller
Features
Low power (5 W) solution for Wireless Power
Consortium (WPC) compliant transmitter design
Conforms to the latest version low power WPC
specifications
Supports wide DC input voltage range starting from
4.2 V, typically 5 V, 12 V and 19 V
Integrated digital demodulation on chip
Supports all types of receiver modulation strategies (AC
capacitor, AC resistor and DC resistor)
Supports Foreign Object Detection (FOD)
Super low standby power by Freescale Touch
technology
Supports any low power consumer power transmitter
solutions using frequency and duty cycle control, or rail
voltage control or phase shift control
LED & buzzer for system status indication
Over-voltage/current/temperature protection
Supports CAN/IIC/SCI/SPI interfaces
Software based solution to provide maximum design
freedom and product differentiation
FreeMASTER GUI tool to enable configuration,
calibration and debugging
Overview Description
The WCT1101 is a wireless power transmitter controller that
integrates all required functions for WPC “Qi” compliant
wireless power transmitter design. It’s an intelligent device
to work with Freescale touch sensing technology or use
periodically analog PING (configurable by user) to detect a
mobile device for charging while gaining super low standby
power. Once the mobile device is detected, the WCT1101
controls the power transfer by adjusting the operation
frequency and duty cycle, or rail voltage, or phase shift of
power stage according to message packets sent by mobile
device.
To maximize the design freedom and product differentiation,
WCT1101 supports any low power consumer power
transmitter design (WPC A/B types or customization) using
frequency and duty cycle control, or rail voltage control or
phase shift control by software based solution. Besides,
easy-to-use FreeMASTER GUI tool with configuration,
calibration and debugging functions provides user-friendly
design experience and speed time-to-market.
The WCT1101 includes digital demodulation module to
reduce external components, over-voltage/current/
temperature protection, FOD method to protect from
overheating by misplaced metallic foreign objects and
general CAN/IIC/SCI/SPI interfaces for external
communication purpose. It also handles any abnormal
condition and operational status, and provides
comprehensive indicator outputs for robust system design.
Applications
Low Power Wireless Power Transmitter
Any lower power consumer power transmitter solution
with frequency & duty cycle control, or rail voltage
control, or phase-shift control (WPC A/B types or
customer properties)
Wireless Charging System Functional Diagram
© Freescale Semiconductor, Inc., 2014. All rights reserved.
_______________________________________________________________________
Contents
1
1.1
1.2
1.3
1.4
Absolute Maximum Ratings .................................................................................................................... 4
Electrical Operating Ratings .................................................................................................................................... 4
Thermal Handling Ratings ....................................................................................................................................... 5
ESD Handling Ratings .............................................................................................................................................. 5
Moisture Handling Ratings ...................................................................................................................................... 5
2
2.1
2.2
2.3
Electrical Characteristics ......................................................................................................................... 5
General Characteristics ........................................................................................................................................... 5
Device Characteristics ............................................................................................................................................. 8
Thermal Operating Characteristics ........................................................................................................................ 17
3
3.1
3.2
3.3
3.4
3.5
Typical Performance Characteristics ............................................................................................... 18
System Efficiency .................................................................................................................................................. 18
Standby Power ...................................................................................................................................................... 18
Digital Demodulation ............................................................................................................................................ 18
Foreign Object Detection ...................................................................................................................................... 18
Dynamic Input Power Limit ................................................................................................................................... 19
4
4.1
4.2
4.3
4.4
Device Information ................................................................................................................................. 19
Functional Block Diagram ...................................................................................................................................... 19
Product Features Overview ................................................................................................................................... 20
Pinout Diagram ..................................................................................................................................................... 21
Pin Function Description ....................................................................................................................................... 22
Consumer Low Power Wireless Transmitter Controller, Rev. 1.0
2
Freescale Semiconductor
4.5
4.6
Ordering Information ............................................................................................................................................ 31
Package Outline Drawing ...................................................................................................................................... 31
5
5.1
5.2
Software Library ...................................................................................................................................... 31
Memory Map ........................................................................................................................................................ 32
Software Library and API Description .................................................................................................................... 32
6
6.1
6.2
6.3
Design Considerations ........................................................................................................................... 32
Electrical Design Considerations............................................................................................................................ 32
PCB Layout Considerations.................................................................................................................................... 33
Thermal Design Considerations ............................................................................................................................. 34
7
7.1
7.2
References and Links ............................................................................................................................. 34
References ............................................................................................................................................................ 34
Useful Links ........................................................................................................................................................... 34
Consumer Low Power Wireless Transmitter Controller, Rev. 1.0
Freescale Semiconductor
3
1 Absolute Maximum Ratings
1.1 Electrical Operating Ratings
Table 1. Absolute Maximum Electrical Ratings (V
SS
= 0 V, V
SSA
= 0 V)
Characteristic
Supply Voltage Range
Analog Supply Voltage Range
ADC High Voltage Reference
Voltage difference V
DD
to V
DDA
Voltage difference V
SS
to V
SSA
Digital Input Voltage Range
Input Voltage Range
Oscillator Input Voltage Range
Analog Input Voltage Range
Input clamp current, per pin (V
IN
< V
SS
– 0.3 V)
Output clamp current, per pin
4
2, 3
Symbol
V
DD
V
DDA
V
REFHx
ΔV
DD
ΔV
ss
V
IN
V
IN_RESET
V
OSC
V
INA
V
IC
V
OC
I
Icont
V
OUT
V
OUTOD
V
OUTOD_RESET
V
OUT_DAC
T
A
T
STG
Notes
1
Min.
–0.3
–0.3
–0.3
–0.3
–0.3
Max.
4.0
4.0
4.0
0.3
0.3
5.5
4.0
4.0
4.0
–5.0
±
20.0
25
4.0
5.5
4.0
4.0
85
150
Unit
V
V
V
V
V
V
V
V
V
mA
mA
mA
V
V
V
V
°
C
°
C
Pin Group 1
Pin Group 2
Pin Group 4
Pin Group 3
–0.3
–0.3
–0.4
–0.3
–
–
–25
Contiguous pin DC injection current—regional limit
sum of 16 contiguous pins
Output Voltage Range (normal push-pull mode)
Output Voltage Range (open drain mode)
Output Voltage Range
DAC Output Voltage Range
Ambient Temperature
Storage Temperature Range
1.
Pin Group 1,2
Pin Group 1
Pin Group 2
Pin Group 5
–0.3
–0.3
–0.3
–0.3
–40
–55
2.
3.
4.
Default Mode:
Pin Group 1: GPIO, TDI, TDO, TMS, TCK
Pin Group 2:
Pin Group 3: ADC and Comparator Analog Inputs
Pin Group 4: XTAL, EXTAL
Pin Group 5: DAC analog output
Continuous clamp current.
All 5 volt tolerant digital I/O pins are internally clamped to
V
SS
through an ESD protection diode. There is no diode connection to
V
DD
.
If VIN greater than VDIO_MIN (=
V
SS
–0.3 V) is observed, then there is no need to provide current limiting resistors at the pads. If
this limit cannot be observed, then a current limiting resistor is required.
I/O is configured as push-pull mode.
Consumer Low Power Wireless Transmitter Controller, Rev. 1.0
4
Freescale Semiconductor
1.2 Thermal Handling Ratings
Table 2. Thermal Handling Ratings
Symbol
T
STG
T
SDR
1.
2.
Description
Storage temperature
Solder temperature, lead-free
Min.
–55
–
Max.
150
260
Unit
°
C
°
C
Notes
1
2
Determined according to JEDEC Standard JESD22-A103,
High Temperature Storage Life.
Determined according to IPC/JEDEC Standard J-STD-020,
Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State
Surface Mount Devices.
1.3 ESD Handling Ratings
Table 3. ESD Handling Ratings
Characteristic
1
Min.
-2000
-200
-500
-100
Max.
+2000
+200
+500
+100
Unit
V
V
V
mA
ESD for Human Body Model (HBM)
ESD for Machine Model (MM)
ESD for Charge Device Model (CDM)
Latch-up current at TA= 85° (I
LAT
)
C
1.
Parameter is achieved by design characterization on a small sample size from typical devices under typical conditions unless
otherwise noted.
1.4 Moisture Handling Ratings
Table 4. Moisture Handling Ratings
Symbol
MSL
1.
Description
Moisture sensitivity level
Min.
–
Max.
3
Unit
–
Notes
1
Determined according to IPC/JEDEC Standard J-STD-020,
Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State
Surface Mount Devices.
2 Electrical Characteristics
2.1 General Characteristics
Table 5. General Electrical Characteristics
Recommended Operating Conditions (V
REFLx
= 0 V, V
SSA
= 0 V, V
SS
= 0 V)
Characteristic
Supply Voltage
2
Symbol
V
DD
,V
DDA
Notes
Min.
2.7
Typ.
3.3
Max.
3.6
Unit
V
Test
Conditions
-
Consumer Low Power Wireless Transmitter Controller, Rev. 1.0
Freescale Semiconductor
5
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