LKCH‐TXRX40W‐EVB
40W Wireless Charging Solution
WIRELESS CHARGING
User Guide
LinkCharge™ 40
40 W Wireless Charging Solution
www.semtech.com
Introduction
The LKCH‐TXRX40W‐EVB wireless charging solution includes one transmitter and one receiver. The transmitter is
named “Semtech TSDMTX‐24V3‐EVM” which is an evaluation platform for test and experimentation of a wireless
charging solution based on the Semtech TS80003 Wireless Power Transmitter Controller, TS61002 FET Driver,
TS30041 DC/DC Converter, and TS94033 Current Sense Amplifier. This evaluation module provides a complete
system solution and is compatible with the Wireless Power Consortium (WPC) or Qi standards of power transmission,
making this transmitter an ideal platform for powering the majority of wireless receivers in use today. The receiver
is named “Semtech TSDMRX‐19V/40W‐EVM” which is an evaluation platform for test and experimentation of a high
power wireless charging receiver based on a suite of high efficiency Semtech ICs: the TS80003 Receiver Controller
for Wireless Power Systems, TS61002 Driver, TS30041 Buck Regulator and the SC508 Buck Regulator Controller. This
evaluation module, in conjuction with the TSDMTX‐24V3‐EVM, provides a complete system solution for the
transmission of high power and charging of batteries with high energy capacity.
Objectives
The objective of this User Guide is to provide a fast, easy and thorough method to fully test and evaluate the Semtech
solutions for wireless charging systems. Semtech offers a range of solutions to meet the needs of a wide range of
system developers. Developers are provided with all the information on how this EVM was built as a starting point
for their own designs using the TS80003 and other Semtech components.
Features
24V Input / 40W Output Power
Variable output voltage (19V default, up to 24V capable)
WPC1.2 compliant
Foreign object detection function
Supports various smartphones charging protocols (with the latest firmware)
Supports up to 15W output power with WPC1.2 receivers
Supports up to 40W output power with Semtech receivers
Please make sure to download the latest software visit www.semtech.com/wireless‐charging to download
the latest EVM software for your evaluation board
Table of Contents
Wireless Charging Concepts ................................................................................................................... 3
Product Description ...............................................................................................................................4
FOD Test ...............................................................................................................................................8
Standard Use ....................................................................................................................................... 9
Transmitter Documentation ................................................................................................................ 14
A. Block Diagram......................................................................................................................... 14
B. Schematic ............................................................................................................................... 15
C. Bill of Materials “BOM” ........................................................................................................... 18
D. Board Layout .......................................................................................................................... 20
Receiver Documentation...................................................................................................................... 24
User Guide
LKCH‐TXRX40W‐EVB
Rev 1.2
Oct‐18
www.semtech.com
1 of 41
Semtech
A.
B.
C.
D.
Block Diagram......................................................................................................................... 24
Schematic ............................................................................................................................... 24
Bill of Materials “BOM” .......................................................................................................... 29
Board Layout .......................................................................................................................... 33
Efficiency measurement ...................................................................................................................... 36
Firmware Management ....................................................................................................................... 37
FAQs ................................................................................................................................................... 38
Next Steps ........................................................................................................................................... 40
User Guide
Rev 1.2
LKCH‐TXRX40W‐EVB
Oct‐18
www.semtech.com
2 of 41
Semtech
Wireless Charging Concepts
Wireless power transfer is, essentially, a transformer. Current is provided to a primary coil which produces an
electromagnetic (EM) field. In this field, a secondary coil is placed. The EM field induces a current into the secondary
coil, providing power to whatever it is connected to.
However, unlike a conventional power transformer that operates at line frequencies and requires an iron core for
efficiency, wireless power systems are designed to operate in the 100 kHz range, and thus can perform efficiently
with an air core. As such, the primary and secondary windings, if closely spaced, can be in separate devices, the
primary being part of a transmitter and the secondary within a receiver. This implementation can also be described
as a radio broadcast process, and as such, these transformer coils can also be seen as antennas with equal validity,
and the two terms will be used interchangeably in this text.
Receiver
Rectifier
Controller
FET Array
Transmitter
Power
Supply
Control
Supply
Regulation
Power
End
Equipment
Electromagnetic
Flux
Wireless power systems differ in another major aspect from conventional transformers, in that they are intelligently
managed. A transmitter will only provide power when a receiver is present, and only produce the amount of power
requested by the receiver. In addition, the system is capable of recognizing when the electromagnetic field has been
interrupted by an unintended element, a 'foreign object', and will shut down the transfer to prevent any significant
amount of power being absorbed by anything but a proper receiver. The intelligent management of the wireless
power transmission process is achieved though the programming of the TS80003, which first searches for a receiver.
Once found, the receiver informs the transmitter of its power requirements, and transmission begins. The system
then verifies the right amount of power being sent, and that no power is being lost to foreign objects. The receiver
will continually provide ongoing requests for power to maintain the transaction. If the requests cease, the
transaction terminates. Via this protocol, even complex charging patterns can be supported, as the transmitter can
provide varying amounts of power at different times, as requested by the receiver. If the receiver requires no further
power, such as when a battery is fully charged, it can request no further power being sent, and the transmitter will
reduce its output accordingly.
Wireless power systems have been broken into three power categories. “Wearable” devices, such as headsets, wrist‐
band devices, medical sensors etc ‐ operate in the low power range, up to 3 watts. Medium power devices, in the 5‐
to 15‐watt range, include handheld devices, such as cell phones, tablets, and medical electronics. High power
systems support devices such as power tools, radio controlled (“RC”) devices such as drones, and other equipments
requiring 15 to 100 watts of power.
User Guide
LKCH‐TXRX40W‐EVB
Rev 1.2
Oct‐18
www.semtech.com
3 of 41
Semtech
Transmitter Description
The TSDMTX‐24V3‐EVM Evaluation Module is a ready‐to‐use demonstration platform allowing testing of up to 40
watts (when used in conjunction with TSDMRX‐19V/40W‐EVM) of wireless power transmission compliant with the
dominant industry WPC/Qi standard.
The transmitter may be coupled with any Qi receiver module to form a complete wireless power transmission
system. For the system designer, a likely choice might be the complementary Semtech TSDMRX‐19V/40W‐EVM,
which can allow a variety of experiments to easily be performed in order to learn more about the behavior of the
system.
There are a number of other Semtech Receiver EVMs that support different power levels and output voltages, any
of which can be used as they are compatible with Qi standard and therefore are compatible with the TSDMTX‐24V3‐
EVM transmitter.
In addition, the evaluator can also use any existing Qi compliant product, though the limited access these devices
offer may make the range of experiments that can be performed more limited.
Those who wish to develop their own board, or integrate this functionality into an existing system can use the EVM
as a starting point for their design, as it demonstrates a working model from which to proceed. Toward this end, all
documentation for the EVM is provided to make the process as efficient as possible.
The key technology in the EVM is the Semtech TS80003 integrated circuit, which controls the system and implements
the Qi protocol. Developers can vary the supporting componentry to meet their goals as desired.
In this user guide, an introduction will be provided to the evaluator about how to use the EVM for wireless power
transmission as well as how the TSDMRX‐19V/40W‐EVM can be used in conjunction with it.
Once the system is set up and working, a selection of tests and activities will be described that the evaluator can
choose to perform.
User Guide
Rev 1.2
LKCH‐TXRX40W‐EVB
Oct‐18
www.semtech.com
4 of 41
Semtech
TX LED Behavior
The red and green LEDs on the EVM let the user know what the transmitter is doing as it operates. As seen in the
diagram below, when power is applied, the transmitter initializes as indicated by the green LED lighting for about a
half second. Next, as the transmitter searches for a nearby receiver, no LED is lit, keeping power to a minimum level
in this standby state. When a receiver is located, the transmitter receives instructions on the upcoming transaction
to perform. Power is then transmitted and the green LED flashes each second indicating an ongoing charging event.
During charging, if a foreign object is detected, charging is aborted and the red LED will flash each second indicating
the fault detected, and will continue to do so until the receiver is removed from the target zone. Similarly, any other
detected error will also abort the charging process, indicated by a steady red LED that remains lit until the receiver
is taken away. Error conditions include communication errors between receiver and transmitter, and detection of
excess voltage, current, power, or temperature on the receiver or transmitter. Absent an error, charging continues
until the receiver indicates no further power is required, usually when an attached battery is fully recharged. At this
point, the transmitter enters the charge complete state, as indicated by the green LED being lit steadily, which it
continues to do until the receiver is removed from the transmitter. Whenever the receiver is removed from the
target area, the transmitter returns to the standby state, searching for another transaction to begin.
Apply Power
1/2 sec
Startup Sequence
- off -
Standby (ping…)
Blinking
Charging
if FOD
Blinking
Solid
Charge Complete
if Error
Solid
Green
LED
Receiver Removed
Red
LED
User Guide
LKCH‐TXRX40W‐EVB
Rev 1.2
Oct‐18
www.semtech.com
5 of 41
Semtech
Receiver Description
The TSDMRX‐19V/40W‐EVM Evaluation Module and its compatible transmitter module, the TSDMTX‐24V3‐EVM,
form a complete, high power, wireless power transmission system to supply a load or charge Li‐ion batteries with
over 2A of current.
This EVM demonstrates a working model and provides a starting point from which one can develop ones own
wireless charging system or integrate its functions into existing systems. All documentation for this EVM is provided
to in order to make this process as efficient as possible.
The key Semtech components in this EVM are the TS80003, TS61002, TS30041 and SC508. The TS 80003 provides
Qi compliant communications and control of the receiver. The TS61002 controls the highly efficient synchronous
rectification of AC current from the receiver’s coil. The TS30041 provides 5V to all components requiring this oper‐
ating voltage. Finally, the SC508 process the received power and provides a well regulated, current‐limited, output
voltage to a load or battery. The SC508 can be bypassed in order to allow the received power to be applied directly
to the load or battery. This technique may be used in constant‐power charging applications.
As seen in the photo below, the receiver is comprised of two parts, a receiver coil and receiver board. Two ports are
provided, one for output power and the other for programming. They are located respectively in the upper and
lower right corners of the board. A number of test points are provided to allow monitoring of internal signals and
voltages and are documented in the schematic diagram herein.
A variety of tests and activities are described herein that the evaluator can choose to perform once the system is set
up and working,
User Guide
Rev 1.2
LKCH‐TXRX40W‐EVB
Oct‐18
www.semtech.com
6 of 41
Semtech
SC508
TS30041
TS80003
TS61002
RX LED Behavior
The green LED on EVM let the user know the status of charge voltage. When power is applied, the receiver initializes
as indicated by the green LED blinking. When a battery or a charge current occurs, the green LED will blink, once the
charge ends, white LED will turn OFF.
User Guide
LKCH‐TXRX40W‐EVB
Rev 1.2
Oct‐18
www.semtech.com
7 of 41
Semtech
FOD Test
In a production device, FOD (Foreign Object Detection) is an important feature, in that the transmission process is
constantly inspected for the introduction of extraneous materials in the target area that could absorb the
transmitted energy and become hot. When Foreign Objective is detected, the TS80003 shuts down power
transmission as a safety precaution, and indicates the detected problem by blinking the red status LED.
This process is bypassed in the receiver EVM, however, in order to allow engineers to test different antennas and
make other hardware modifications without triggering the FOD protocols and complicating the testing process.
When such hardware changes are made, the parameters of the feedback measurements change, which the FOD
protocol would perceive as a foreign object in the field, and cause the system to shut down.
In order to test the FOD protocol, the experimenter can use any Qi products certified to WPC 1.2 or higher as a
receiver. A list of such products can be found at:
http://www.wirelesspowerconsortium.com/products/?brand_name=&product_name=&type_number=&product_
type=2&compliant_automotive=&sort=&direction=asc
Experiments can be run on foreign objects on receivers with and without FOD management enabled to observe the
differences. With FOD disabled, the metal object in the field will absorb some of the transmitted energy and become
warm. Using a FOD‐enabled production device, power transmission will be aborted when any significant interference
in power transfer has been detected.
Once a FOD abort takes place, the transaction is terminated, as indicated by a blinking red LED. To restart power
transmission, the receiver must be removed from the target area and a new transaction must be initiated. If the FOD
is still present, the transaction will fail again, and continue to do so until the FOD is removed from the target area.
User Guide
Rev 1.2
LKCH‐TXRX40W‐EVB
Oct‐18
www.semtech.com
8 of 41
Semtech
Standard Use
The TSDMTX‐24V3‐EVM is easy to set up and use. Use the power supply module and line cord that comes with the
EVM kit to apply power to the EVM via “J2”, the 24V power input jack. The acceptable input voltage range is from
22V to 26V. Once input power is provided, the green LED should light for about a half‐second and then turn off.
At this point, the EVM is ready to transmit power. A few times each second, the transmitter emits a ‘ping’ of energy
in search of a compliant receiver in range.
When receiver is in range (usually 4mm~8mm), the receiver is powered sufficiently during the ping‐phase and is able
to announce its presence to the transmitter, and a transaction begins. The transmitter provides a small amount of
power to the newly discovered receiver, so receiver can tell the transmitter what its power requirements are.
At the completion of the handshake, the transmitter begins providing the requested power, indicated by a blinking
green LED. During power transfer, the receiver continuously communicates with the transmitter, actively directing
the process. In this way, it is assured that power is only sent by how much it is required by an available and desirous
receiver – and in the way that is compatible to the requirements of the receiver. If required, a receiver can actively
increase or decrease its power request, and the transmitter will act accordingly. As such, equipment with complex
charging requirements can be precisely supported and only the desired amount of power is provided.
Once charging is completed, the LED stops blinking and displays a steady green ‘completed’ state. If at any time an
error is detected, the red LED is lit and transmission is halted. To restart, the receiver must be removed from the
range of the transmitter and put back to the target zone to start a new transaction.
Productized Receiver Test
If you have a product that is Qi compliant, simply place it on the circular target of the black plastic antenna cover.
The transmitter should demonstrate the above actions, and the device receiving power should indicate it is taking a
charge in whatever manner its users guide states. You can also perform foreign object detection (FOD) by following
the steps in the “FOD Testing” section below.
EVM Receiver Tests
Additional testing can be performed with the use of an EVM receiver module. There are a number of Semtech
Receiver EVMs that support different power levels and output voltages, any of which can be used, as all support the
Qi standard and therefore are compatible with the TSDMTX‐24V3‐EVM transmitter. In this User Guide, the TSDMRX‐
19V/40W‐EVM has been selected as the receiver to experiment with. Other Semtech receiver EVMs may be used
instead in a similar manner; refer to the user guide for the selected receiver for details specific to the selected device.
Also, you can use phones which includes WPC wireless charging functions, like Samung phone S6 or above and
Iphone 8 or above, to test TSDMTX‐24V3‐EVM.
In order to use the TSDMRX‐19V/40W‐EVM as a target receiver, simply place the receiver over the target circle on
the transmitter EVM module. You should see the LEDs on each EVM turn green, indicating a transaction has been
established. The EVM’s purpose is to receive power; next you can decide what to deliver that power to.
The user has a number of possible options to choose from. The optimal load to select would be a Programmable DC
Electronic Load. A ‘load box’ can easily be set to draw a selected current or power at the turn of a knob, making
them very flexible and easy to use in observing power supply operation in general. If a load box is not available, a
power resistor decade box is nearly as convenient, as it can easily be set to any desired resistance to simulate a range
of load conditions. In either case, please make sure the test load is rated for at least the amount of power being
tested. If need be, a selection of power resistors could be used as test loads, though without the ease of modification
of the prior options. Finally, any device that uses a 24 volt input up to 60 watts of power can be used as a desired
test load.
User Guide
LKCH‐TXRX40W‐EVB
Rev 1.2
Oct‐18
www.semtech.com
9 of 41
Semtech
Whatever load is selected, wires must be run from the VOUT+ and GND pins of the receiver EVM to the selected test
load, as per the illustration below. Once the load is added, the receiver EVM can be used to perform a variety of
tests. Alternately, power can be drawn from the VBUS and GND lines of the USB port if desired.
Connect a DC voltmeter across the VOUT+ and GND pins to monitor the voltage being output to the load, and a DC
ammeter in series with the VOUT+ line. Set rating of those meters to allow for up to 24 volts and 3.0 amps to be
observed.
No load being connected is also fine, place the receiver on the center of the transmitter target circle. Once
transmission begins, you should observe approximately 24 volts and 0 amperes on the meters.
Apply a variety of loads to observe performance at 5, 10, and 15 watt levels. Voltage should remain nearly constant,
and current should follow the P=V*I relationship. Experiment with the maximum power that can be drawn before
the receiver detects an overload and cuts off power. You should be able to observe on a minor overload, the receiver
will attempt to restore power by retesting the load intermittently. In the case of a major overload, the transmitter
may register an error, as indicated by a red LED on the transmitter, which will halt further activity until the receiver
is removed from the target area for several seconds before being placed back to start a new transaction.
Observe Coil Signals
The following information is provided for reviewing how the EVM works in detail, as what can be observed below is
entirely managed by the Semtech TS80003 Wireless Controller. It allows the observer an opportunity to see how the
receiver and transmitter actively manage the wireless power process.
If you wish to observe the intrinsic wireless process, place an oscilloscope probe on one end of the antenna/coil,
with the probe ground connected to the board ground (one of the fastener screws will suffice). Be sure the scope
can handle signals up to 250 volts. While the EVM power supply is only 19 volts, the antenna is part of a resonant
circuit where considerably higher voltage appears.
To observe the search ping, apply power to the transmitter and remove the receiver from the target zone. The scope
should display a ‘chirp’ of 0.5 to 1mSec in duration with an initial peak of 15 to 20 volts. The frequency within the
envelope of the chirp is in the 100‐205 kHz range, which is the normal range of Qi systems.
Next, place the receiver on the transmitter target. With the scope set to 0.5 to 1 uSec and 10 to 20 volts per division,
you should observe a signal that is a composite of the sinusoidal power signal with a digital ‘notch’ in the sinewave
which is produced by the communication between the receiver and transmitter. Note as you vary the load and the
location of the receiver on the target that the amplitude and frequency of the coil signal changes. The greater the
load, the more signal is sent to transfer the power required by the load. Similarly, the less well coupled the receiver
antenna is to the transmitter coil, the more power must be sent to compensate for the inefficient misalignment. You
may note voltages near 140‐volt peak‐to‐peak in the most demanding conditions.
User Guide
Rev 1.2
LKCH‐TXRX40W‐EVB
Oct‐18
www.semtech.com
10 of 41
Semtech
Thermal images using TSDMRX‐19V20W‐EVM under 19V 20W condition
Operation ambient temperature: 26.5°C
Rx board: 60.6°C
Tx board: 54.1°C
Thermal images using TSDMRX‐5V10W‐EVM under 5V 10W condition
Rx board: 46°C
Tx board:43°C
The TSDMTX‐24V3‐EVM is easy to set up and use. Connect a 24V source capable of supplying greater than 50W to
the transmitter’s input jack using a 3.5mm OD coaxial power connector. Upon application of power, its green LED
should light, indicating the board is now active.
At this point, the transmitter EVM is ready to transmit power. A few times each second, the transmitter emits a
‘ping’ of energy in search of a compliant receiver in range.
When in range, the receiver is powered by the ping sufficiently to be able to announce its presence to the
transmitter, and a transaction begins. The transmitter then provides a small amount of power to the newly
discovered receiver so that it can communicate and transmit its power requirements.
User Guide
LKCH‐TXRX40W‐EVB
Rev 1.2
Oct‐18
www.semtech.com
11 of 41
Semtech
At the completion of this handshake, the transmitter begins providing the requested power. During power transfer,
the receiver continuously communicates with the transmitter, actively directing the process. This assures that power
is only sent when and how it is required by the receiver. If required, a receiver can actively increase or decrease its
power request, and the transmitter will act accordingly. Thus, equipment with complex charging requirements can
be precisely supported and only the desired amount of power provided.
EVM Receiver Tests
A variety of tests can be performed with the use of the TSDMTX‐24V3‐EVM transmitter module. Connect a 24V
source capable of supplying greater than 50W to the transmitter’s input jack using a 3.5mm OD coaxial power
connector. Upon application of power, its green LED should light, indicating the board is now active.
In order to use the TSDMRX‐19V/40W‐EVM as a target receiver, simply place the receiver over the target circle (the
‘primary coil’ or ‘transmitter antenna’) on the transmitter EVM module, and then connect a battery to the J4 of the
receiver. Connect a DC voltmeter across the VOUT and PGND pins to monitor the voltage, and a DC ammeter in
series with the J4 line to monitor the charging current. Set levels to allow for up to 20 volts and 2.5 amps to be
observed.
The receiver LED should be green when the receiver is placed on the active transimiter. This indicates that its output
voltage is normal.
The programmed CC charge current can be set with R43 ‐ the resistor that ties the Ilim pin to the switch node of the
converter. Its value programs the output current indirectly by causing switching cycle termination when the the
valley of the inductor current reaches a predetermined level. The valley current can be calculated by:
∗
∗
Where: Rdson is the bottom mosfet’s on resistance.
Rpwb is the circuit board trace resistance between the sense point(s) and the mosfet.
Ilim is 10µA.
Rlim is the resistance of R43.
The charge current is the average inductor current. The difference between the average current and the valley
current is ½ of the peak to peak inductor ripple. The peak to peak inductor ripple current can be calculated by:
1
∗
∗
Where:
D is the converter’s duty cycle defined as D=Vout / Vpdc. Vpdc is programmed to be 30V.
Vout is the open circuit output voltage of the receiver.
Fsw is the converter’s switching frequency. It is programmed to be 500KHz.
L is the converter’s output inductor. It has a value of 22uH.
Thus, the receiver’s charge current is:
User Guide
Rev 1.2
LKCH‐TXRX40W‐EVB
Oct‐18
∗
1
2∗
∗
∗
www.semtech.com
12 of 41
Semtech
Thermal images of TSDMRX‐19V/40W‐EVM under 19V 40W condition
The thermal image of TSDMRX‐19V/40W‐EVM under full‐load test is shown below. The hottest component on the
board is the mosfet in the buck regulator (75⁰C).
User Guide
LKCH‐TXRX40W‐EVB
Rev 1.2
Oct‐18
www.semtech.com
13 of 41
Semtech
Transmitter Documentation
The following sections document the hardware design of the TSDMTX‐24V3‐EVM. This information can be used to
better understand the functionality of the design, as well as assist in creating your own hardware solution based on
this design.
A. Block Diagram
The TSDMTX‐24V3‐EVM may be divided into a number of sub‐blocks as shown in the diagram below:
24 Volt Supply ‐ the external ‘brick’ that converts AC power to 24 volts
5 Volt Buck – based on the TS30041, converts 24 vdc to 5 vdc
Controller – based on the TS80003 Wireless Power Controller. Includes I/O: USB, I2C, Temp Sensor, LED display
FET Driver – based on the TS61002 Full‐bridge FET Driver, powers the FETs based on inputs from controller, supply
3Vcc for Controller
Bridge FETs – gates drive power from the 19v supply to drive the resonant tank circuit (antenna)
User Guide
Rev 1.2
LKCH‐TXRX40W‐EVB
Oct‐18
www.semtech.com
14 of 41
Semtech
www.semtech.com
I2C/UART
VCC
SDA/RX
SCL/TX
GND
PGND
1
2
3
4
C1
4.7uF
6.3V
VCC3V
AGND
C5
4.7uF
6.3V
AVCC
C2
100nF
R4
10K
NP
R5
10K
NP
C6
100nF
C3
100nF
J1: Pin 2 is connected to TX of PC; Pin 3 is connected to RX of PC
68000-104HLF
J1
600
L1
R1
1.0
C7
4.7nF
SCL_TXD
SDA_RXD
TPC1
TPC2
GND
C4
100nF
21
27
37
38
39
40
19
20
13
14
31
41
15
32
LEDR
LEDG
TS80003
150
R7
BST_L
TOUCH1/BST_VSET
TOUCH2
TOUCH3
BT_RX/SWDIO
BT_TX/SWDCLK
I2C_SCL/RX
I2C_SDA/TX
AVSS
AVDD
VSS
PAD
VDD
VDD
U1
150
R8
PGND PGND
D1
LEDG
LEDR
LEDB
COIL_EN1
COIL_EN2
COIL_EN3
AC_GAIN1
AC_GAIN2
AC_PHASE
AC_AMPL
BATT_V
AC_V
DC_V
DC_I
AC_PEAK
COIL_PHASE
MATCH_PHASE
TEMP
DRV_EN
SYNC1
SYNC2
BUCK_H
BUCK_L
PWM1_H
PWM1_L
PWM2_H
PWM2_L
3
Rev 1.2
Oct‐18
4
User Guide
LKCH‐TXRX40W‐EVB
1
2
VCC3V
22
17
16
28
35
36
1
7
8
10
11
9
4
5
6
2
3
12
18
25
26
33
34
23
24
30
29
LEDG
LEDR
DIV_EN
R0
TEMP
0
AC_V
DC_VOLTAGE
DC_CURRENT
AC_PEAK
AC_PHASE
AC_AMPL
DRV_EN
SYNC1
SYNC2
PWM1_H
PWM1_L
PWM2_H
PWM2_L
DIV_EN
AC_V
AC_V
DC_VOLTAGE
DC_CURRENT
AC_PEAK
AC_PHASE
AC_AMPL
DRV_EN
SYNC1
SYNC2
PWM1_H
PWM1_L
PWM2_H
PWM2_L
AGND
C8
100nF
R6
10K
AVCC
100K
R3
47K
R2
AC_GAIN
TEMP
DC_CURRENT
DC_VOLTAGE
AC_V
AC_PHASE
AC_AMPL
AC_PEAK
AC_GAIN
TP6
TP5
TP4
TP3
TP2
TP1
B. Schematic
Below are the schematics for the TSDMTX‐24V3‐EVM. Annotation has been added to indicate which part of the block
diagram each component is a member of.
15 of 41
Semtech
User Guide
Rev 1.2
LKCH‐TXRX40W‐EVB
Oct‐18
www.semtech.com
200K
DC_I-
DC_I+
DRV_EN
VCCIN
10
R35
AGND
C54
10nF
10V
AVCC
C52
1uF
1
6
7
2
R32
10K
AGND
TS94033
VOS_REF
INM
INP
EN
U4
75K
R31
AGND
VSS
OUT
VDDR
VDD
AGND
R30
1.5K
AGND
VCC3V
4
8
3
5
AGND
DIV_EN
1K
R33
DC_VOLTAGE
C53
100nF
C51
10nF
10V
DC_CURRENT
AGND
AGND
VCC
E
Y
Z
GND
U0
74LVC1G66GW
NP
AC_PEAK
VDIODES
R26_0
0
5
DIV_EN 4
1
3
AVCC
DC_CURRENT
Place close to the TS80003.
DC_VOLTAGE
Place close to the TS80003.
C48
100nF
AC_PEAK
VDIODES
AGND
R27
7.5K
R25
7.5K
AVCC
Place close to the TS80003.
AGND
C50
4.7nF
100K
C49
1nF
150V
R29
D4
7.5K
AGND
C47
33pF
R28
Place close to the TS61002.
4.7nF
150V
R26
Maintain clearances to other circuits.
High Voltage.
COIL
C46
D3
BAT54SW-7-F
2
VSENSE
VSENSE
PGND
C12
1uF
35V
VCCIN
16 of 41
Semtech
J2
9
8
2
3
11
GND
TIE1
PGND
GND
PGND
VCC5V
VCCIN
GND
TIE2
GND
PGND
PGND
PAD
FB
VSW
VSW
VSW
VSW
BST
TS30041-M000QFNR
EN
PG
VCC
VCC
VCC
U2
47nF
C11
PGND
R10
10K
C10
100nF
50V
AGND
TP10
TP9
TP8
TP7
PGND PGND
4
14
15
17
5
1
12
13
16
10
C9
22uF
35V
VCCIN
47K
R9
PGND
C13
22uF
6.3V
C14
22uF
6.3V
FET Driver supply
4.7uH
L2
VCC5V
www.semtech.com
C17
22uF
35V
PGND
C40
10uF
16V
VCC5V
100K
NP
R18
High Voltage.
AC_AMPL
AC_PHASE
7.5K
R16
AGND
1nF
150V
NP
C43
CB
RB
13
4
17
23
22
27
14
15
100K
NP
R24
AGND
C42
4.7uF
6.3V
VCC3V
R20
100K
R17
100K
C41
100nF
10V
PGND
C36
47pF
NP
C27
47pF
CA
19
AC_V
11
10
18
12
26
16
20
25
24
21
Place pin 19 close to the TS80003.
VCC5V
C16
22uF
35V
VSENSE
VDIODES
AC_AMPL
AC_PHASE
AC_V
VSENSE
PWM1_H
PWM1_L
PWM2_H
PWM2_L
SYNC1
SYNC2
AC_GAIN
DRV_EN
PGND
C15
22uF
35V
2A
i
10nF
C45 NP
220pF
NP
C44
TS61002
AGND
VCCG
VLDO
VOUTB
CB
RB
VOUTA
CA
RA
VIN
HS1ON
LS1ON
HS2ON
LS2ON
LO1
VS1
HO1
VB1
LO2
VS2
HO2
VB2
5A
i
AC_AMPL
CB
PGND
R23
0
1
R21
0
R19
0
R15
1
R13
0
R12
Use a current sense resistor with a low temperature coefficient.
Q2B
BSC0993ND
8
C37
47nF
1
Q2A
BSC0993ND
PGND
VBRIDGE
Q1B
BSC0993ND
8
C24
47nF
1
Q1A
BSC0993ND
VBRIDGE
DC_I+
DC_I-
PGND
PGND
C38
2.2nF
50V
NP
PGND
C39
2.7nF
50V
R22
2.0
5A
i
C28
100nF
50V
5A
i
C26
2.7nF
50V
R14
2.0
5A
i
C20
100nF
50V
PGND
SW2
C31
2.2nF
50V
NP
PGND
C25
2.2nF
50V
NP
SW1
C23
2.2nF
50V
NP
5A
i
C29
22uF
35V
C21
22uF
35V
PGND
C30
22uF
35V
PGND
C22
22uF
35V
Do not allow high current to flow through the Kelvin connections.
directly to the resistor pads.
C19
100nF
Connect the current-sense amplifier using Kelvin connections
50V
VBRIDGE
D2
28V
NP
PGND
29
5
6
8
7
9
3
1
2
28
TIE4
PAD
PGND
TIE3
DRV_EN
LDO_EN
SYNC1
SYNC2
GAIN
U3
C18
100nF
50V
0.020
1%
R11
2, 3, 4
9
9
5, 6, 7
2, 3, 4
Rev 1.2
Oct‐18
9
User Guide
LKCH‐TXRX40W‐EVB
9
5, 6, 7
VCCIN
C32
47nF
200V
5A
i
1
2
C33
47nF
200V
C34
22nF
200V
High Voltage.
COIL
1
2
PGND
SW2
SW1
Therm
TEMP
TP13
TP12
TP11
COIL
COIL
C35
NP
AC
AC
J4
20uH
Coil Thermistor
J3
VBRIDGE
17 of 41
Semtech
C. Bill of Materials “BOM”
Below is a list of the parts used in the TSDMTX‐24V3‐EVM. An excel spreadsheet file with this information is available
on the Semtech website as an additional convenience.
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
Designator
C1, C5, C42
C10, C18, C19
C11, C24, C37
C12
C13, C14
C2, C3, C4, C6, C8,
C41, C48, C53
C20, C28
C26, C39
C27
C32, C33
C34
C40
C46
C47
C49
C51, C54
C52
C7, C50
C9, C15, C16, C17,
C21, C22, C29, C30
D1
D3
D4
J2
J4
Qt.
3
3
3
1
2
8
Value
4.7uF
100nF
47nF
1uF
22uF
100nF
Value2
6.3V
50V
25V
35V
6.3V
10V
Footprint
CAPC0603L
CAPC0402L
CAPC0402L
CAPC0805L
CAPC1206N
CAPC0402L
Description
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
2
2
1
2
1
1
1
1
1
2
1
2
8
100nF
2.7nF
47pF
47nF
22nF
10uF
4.7nF
33pF
1nF
10nF
1uF
4.7nF
22uF
50V
50V
10V
200V
200V
16V
150V
10V
150V
10V
10V
10V
35V
CAPC0603L
CAPC0805L
CAPC0402L
CAPC1812‐1210N
CAPC1812‐1210N
CAPC0805L
CAPC1206N
CAPC0402L
CAPC1206N
CAPC0402L
CAPC0402L
CAPC0402L
CAPC1210N
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
1
1
1
1
1
LED_APHB1608
SOT323‐3N
SOT23‐3N
CON_HEADER
CON_COIL_PIN_2P_TDK_A21
L1
L2
Q1, Q2
R0, R12, R15, R19,
R23, R26_0
R1
R11
R13, R21
R14, R22
R16, R25, R27
R2, R9
R26
R28
R29
R3, R17, R20
R30
R31
R33
R35
R6, R10, R32
R7, R8
U1
1
1
2
6
600
4.7uH
0
RESC0603L
RESC0805L
QFN8‐INF
RESC0402L
LED Dual Color
Schottky Diode
Diode
Power Supply Connector
Coil connector, 2
contacts, solder pads
Ferrite Bead
Inductor
DUAL MOSFET
Resistor
1
1
2
2
3
2
1
1
1
3
1
1
1
1
3
2
1
1.0
0.020
1
2.0
7.5K
47K
200K
7.5K
100K
100K
1.5K
75K
1K
10
10K
150
TS80003
1%
RESC0402L
RESC0805L
RESC0402L
RESC0805L
RESC0402L
RESC0402L
RESC0603L
RESC0603L
RESC0805L
RESC0402L
RESC0402L
RESC0402L
RESC0402L
RESC0402L
RESC0402L
RESC0402L
PG‐VQFN‐40‐17
Resistor
Current Sense Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
wireless charge controller
User Guide
Rev 1.2
LKCH‐TXRX40W‐EVB
Oct‐18
www.semtech.com
18 of 41
Semtech
46
U2
1
TS30041
QFN50P300X300‐16V6‐165N
47
48
U3
U4
1
1
TS61002
TS94033
QFN50P500X500‐28W1L
SC70‐8N
Current‐Mode
Synchronous Buck DC/DC
Converter
Full‐Bridge FET driver
Current Sense Amplifier
Tx Coil Specifications:
Vendor
Part Number
Wurth Electronics
760308102144
Induct‐
ance
20uH
DCR(typ.)
Dimension
0.07Ω
54mm X 54mm
Attention:
1.
2.
Resonance capacitors (C32, C33, C34) should be COG capacitor, it should any Qi products certified to WPC
1.2 or higher as a receiver;
Current sense resistor (R11) should be 1% 75PPM/C or better.
Coil size 54mm X 54mm
User Guide
LKCH‐TXRX40W‐EVB
Rev 1.2
Oct‐18
www.semtech.com
19 of 41
Semtech
D. Board Layout
The diagram below shows the locations of the components used in the TSDMTX‐24V3‐EVM PCB.
The TSDMTX‐24V3‐EVM PCB is based on four‐layer design as shown below. The ground plane in layer two is
recommended to reduce noise and signal crosstalk. All components are placed on the top of the board for easier
evaluation of the system. End product versions of this design can be made significantly smaller by distributing
components on both sides of the board. The Gerber files for this artwork can be downloaded from the Semtech web
page.
User Guide
Rev 1.2
LKCH‐TXRX40W‐EVB
Oct‐18
www.semtech.com
20 of 41
Semtech
Top Layer
Ground Plane
User Guide
LKCH‐TXRX40W‐EVB
Rev 1.2
Oct‐18
www.semtech.com
21 of 41
Semtech
Signal Layer
Bottom Layer
Attention
Connect the current‐sense amplifer using Kelvin connections directly to the Current sense resistor pads, and do
NOT allow high current to flow through the Kelvin connections. It is an example for the layout.
User Guide
Rev 1.2
LKCH‐TXRX40W‐EVB
Oct‐18
www.semtech.com
22 of 41
Semtech
User Guide
LKCH‐TXRX40W‐EVB
Rev 1.2
Oct‐18
www.semtech.com
23 of 41
Semtech
Receiver Documentation
The following sections document the hardware design of the TSDMRX‐19V/40W‐EVM. This information can be
used to better understand the functionality of the design, as well as assist in creating your own hardware solution
based on this design.
A. Block Diagram
The TSDMRX‐19V/40W‐EVM may be divided into a number of sub‐blocks as show in the diagram below:
Antenna: Transmitter ‐ primary coil providing power to the receiver; part of TSDMTX‐24V3‐EVM
Antenna: Receiver ‐ secondary coil in the flux field of the transmit antenna; part of the 100 KHz resonant tank
Rectifier ‐ converts AC voltage from the antenna to positive values; FET based for high efficiency conversion
Internal Regulator ‐ based on the TS30041; converts rectified input to regulated 5V output used for power to receiver
circuitry; includes protection circuitry
Internal Regulator ‐ based on the SC508; converts rectified input to regulated 19V, 40W capable output; includes protec‐
tion circuitry
Comm. Generator ‐ produces the ‘handshake’ signal telling the transmitter power required
Comm. Modulator ‐ sends the handshake signal to the transmitter
Battery/Load – end equipment to be powered by the wireless receiver
The receiver can also be configured to directly charge batteries by bypassing the SC508 based buck converter:
B. Schematic
Below is the schematic for the TSDMRX‐19V/40W‐EVM.
User Guide
Rev 1.2
LKCH‐TXRX40W‐EVB
Oct‐18
www.semtech.com
24 of 41
Semtech
I2C/UART
VCC
SDA/RX
SCL/TX
GND
1
2
3
4
GND
VCC3V
AGND
R7
10k
NP
C5
4.7µF
6.3V
AVCC
C2
0.10µF
1
2
Header 2
J2
AGND
TEMP
C4
0.10µF
39
40
SCL_TXD
SDA_RXD
LEDG
LEDR
19
20
SMB_SCL
SMB_SDA
N/C 8
N/C 10
16
17
N/C 21
N/C 27
N/C 38
13
14
31
41
15
32
C7
4700pF
GND
R8
10k
NP
SCL_TXD
SDA_RXD
C6
0.10µF
C3
0.10µF
J1: Used for programming.
J1: Pin 2 is connected to the TX of the PC.
J1: Pin 3 is connected to the RX of the PC.
68000-104HLF
NP
J1
L1
C1
4.7µF
6.3V
BLM18AG601SN1D
600
R1
1
VCC3V
SMB_SDA
SMB_SCL
LEDR
LEDG
TS81003
NC
NC
LEDG
LEDR
BST_L
TOUCH1
TOUCH2
BT_RX
BT_TX
I2C_SCL/RX
I2C_SDA/TX
AVSS
AVDD
VSS
PAD
VDD
VDD
U1
150
R9
TP2
TP1
150
R10
AC_GAIN1
AC_GAIN2
ACMPREF
AC_I_1
AC_I_2
ACMP1_OUT
ACMP2_OUT
PDC_V
AC_V
AC_I
DC_V
DC_I
ZERO_CROSS
TEMP
EN_DRV
EN_MOD
EN_LOAD
EN_MINLD
PWM1_H
PWM1_L
PWM2_H
PWM2_L
BUCK_H
BUCK_L
GND
3
4
www.semtech.com
1
Rev 1.2
Oct‐18
2
User Guide
LKCH‐TXRX40W‐EVB
25 of 41
Semtech
EN_DRV
EN_MOD
EN_LOAD
MIN_LD
4.7k
R6
AC_GAIN1 R4
AC_GAIN2 10k
ACMPREF
AC_I_1
AC_I_2
ACMP1_OUT
ACMP2_OUT
AGND
TIE3
D1
APHB1608ZGSURKC
35
36
12
7
3
22
28
PDC_V
1
9 N/C
AC_I
6
DC_V
4
5 N/C
2 N/C
11 TEMP
18
25
26
37
23 PWM1_H
24 PWM1_L
30 PWM2_H
29 PWM2_L
33 N/C
34 N/C
PGND
EN_GAIN
AC_I_1
AC_I_2
AC_I
DC_V
PDC_V
GND
C11
0.10µF
DC_V
R3
10k
AVCC
PGND
AGND
TIE1
AGND
R13
10k
R11
75k
VOUT
EN_GAIN
EN_DRV
EN_MOD
EN_LOAD
MIN_LD
PWM1_H
PWM1_L
PWM2_H
PWM2_L
0.10µF
C9
0.0
0.0
R02
0.0
R01
0.0
R04
R03
AGND
C10
GND
AGND
C12
0.10µF
PDC_V
AGND
AGND
TIE2
AGND
R14
10k
R12
133k
PDC
PWM1_L
PWM2_H
PWM2_L
PWM1_H
0.10µF
R5
100k
AVCC
www.semtech.com
24uH
J3
PDC
GND
COIL
AC
AC
1
2
TP5
TP4
AGND
C46
4.7µF
6.3V
R38
7.5k
AGND
R36
200k
R35
7.5k
AVCC
C39
10pF
C47
0.10µF
AGND
2
3
20
EN_MOD
VACC_MID
R49
1
5A
i
C54
22uF
35V
5A
i
C53
22uF
35V
4
L4
PGND
C21
22uF
35V
PGND
ISENSE
AGND AGND
3
C20
1000pF
100V
NP
VCC3V
C19
1000pF
100V
NP
D2
BAT54SWT1G
VAC2
ISENSE
10000pF
100V
NP
C25
47nF
100V
C24
47nF
100V
C17
VAC1
COIL
C14
22uF
35V
PGND
R25
100k
EN_MOD
VAC2
VAC1
Q2B
IPG20N06S4L-14
PGND
PDC
4
2
4
2
Q4
2N7002
C29
0.015µF
PGND
PGND
C23
0.10µF
50V
Q2A
IPG20N06S4L-14
C22
22uF
35V
5A
i
C15
22uF
35V
Q1B
IPG20N06S4L-14
PDC
C16
0.10µF
50V
Q1A
IPG20N06S4L-14
5A
i
1
3
1
COIL
2
1
7, 8
5, 6
7, 8
5, 6
3
User Guide
Rev 1.2
LKCH‐TXRX40W‐EVB
Oct‐18
26 of 41
Semtech
R23 1
20k
GD2B
R54
R21 1
20k
GD2A
R22
R17 1
20k
GD1B
R53
R15 1
20k
GD1A
R16
VB2
29
5
Q5
2N7002
C30
0.015µF
PGND
6
8
7
9
3
1
PGND
LO2
VS2
HO2
0.047µF
C18
LO1
HO1
2
VB1 28
0.047µF
C13
TS61002
PAD
PGND
LO2
VS2
HO2
VB2
LO1
VS1
HO1
VB1
U2
0.0
R20
AGND
AC_I_2
PWM1_H
PWM1_L
PWM2_H
PWM2_L
C27
0.10µF
PGND
Q3
2N7002
R24
200
PGND
C28
10µF
10V
VACC_MID
AC_I_2
AC_I_1
ISENSE
VCC5V
VCC5V
VACC_MID
PGND
PDC
EN_DRV
EN_GAIN
R18 10k
C26
0.10µF
VCC3V
MIN_LD
AGND
13
4
17
23
22
27 N/C
14
R19 10k
AC_I_1
19
15
ISENSE
PWM1_H
PWM1_L
PWM2_H
PWM2_L
21
11
10
18
12
MIN_LD
AGND
VCCG
VLDO
VOUTB
CB
RB
VOUTA
CA
RA
VIN
HS1ON
LS1ON
HS2ON
LS2ON
DRV_EN
LDO_EN
SYNC1
SYNC2
GAIN
26
EN_DRV
16
20 N/C
25 N/C
24
EN_GAIN
www.semtech.com
R30
10k
AGND
PGND
VCC5V
EN_LOAD
U4
TL431ACDBZTG4
PDC
AGND AGND
AGND
TP11
TP10
TP3
PGND
PGND
R55
10k
R52
133k
AGND
15
PDC
PSV
SS
VLDO
VDDP
VDDA
TON
ENL
EN
PGOOD
9
8
2
3
11
EN_LOAD
SC508ULTRT
C37
0.10µF
50V
NP
PGND
VOUT_SENSE
FB
2
1
R48
10k
Q10
DMP4047LFDE
NP
47k
R47
L3
4.7uH
MLP2012S4R7M
Q11
2N7002
C44
22µF
10V
1
R44
R42
3.3
1
R2
R45
20k
2
R37
20k
4
VCC5V
VOUT
PGND
DL
12
10k
ILIM
16
R43
LX
R33
10k
NP
PGND
C31
10
7
BST
8
0.10µF
N/C 50V
DH
9
5
PGND
FB5V
PGND
17
14
15
4
5
R32
20k
NP
R27
10k
NP
PAD
PGND
PGND
GND
FB
VSW
VSW
VSW
VSW
C42
FB
VOUT
DL
ILIM
LX
N/C
BST
DH
VIN
1 0.047µF
50V
12
13
16
10
PGND
BST
EN_LOAD
AGND
TS30041
EN
PG
VCC
VCC
VCC
U5
AGND
Q9
DMP4047LFDE
NP
PGND
6
14
C43
4.7µF
50V N/C
N/C
PDC_CLAMP
AGND
C48
1µF
10V
SS
VLDO 4
13
3
TON 19
20
EN_LOAD 17
N/C
U3
PGND
VCC5V
C38
C52
10000pF 0.10µF
50V
50V
Q6
2N7002
C8
1µF
10V
2
R46
715k
1
3
PAD
21
AGND
18
Rev 1.2
Oct‐18
11
Q12B
IPG20N06S2L-50
PGND
10k
4.99k
C51
1000pF
50V
R50
1k
R34
9.09k
AGND
0.022µF
50V
XAL6060-223
C50
R51
PGND
L2
22uH
C32
0.10µF
50V
D4
BAS21-03W
R28
Q12A
IPG20N06S2L-50
PDC
5, 6
3
7, 8
1
User Guide
LKCH‐TXRX40W‐EVB
27 of 41
Semtech
C33
10µF
35V
AGND
R31
1k
R26
34k
C34
10µF
35V
499k
PDC
PGND
C36
10µF
35V
R29
C49
330pF
C35
10µF
35V
1
2
3
4
VOUT
19V Output
VOUT
VOUT
GND
GND
J4
PWR
User Guide
Rev 1.2
LKCH‐TXRX40W‐EVB
Oct‐18
www.semtech.com
28 of 41
Semtech
COIL
C41
1nF
200V
Maintain clearances to other circuits.
AGND
100k
7.5k
D3
BAS101S,215
R40
R39
Caution. High Voltage!
COIL
AGND
R41
2.49k
AGND
AC_I
Place close to the TS80003.
C40
0.10µF
AC_I
C. Bill of Materials “BOM”
Below is a listing of the parts used in the TSDMRX‐19V/40W‐EVM. An excel spreadsheet file with this information is
available on the Semtech website as an added convenience.
Designator
Part Number
Manufacturer
C1
DNP
4.7µF
Value
6.3V
Voltage
±20%
Tolerance
GRM155R60J475ME47D
Murata Electronics North America
C2
0.10µF
50V
±20%
GRM155R71H104ME14D
Murata Electronics North America
C3
0.10µF
50V
±20%
GRM155R71H104ME14D
Murata Electronics North America
C4
0.10µF
50V
±20%
GRM155R71H104ME14D
Murata Electronics North America
C5
4.7µF
6.3V
±20%
GRM155R60J475ME47D
Murata Electronics North America
C6
0.10µF
50V
±20%
GRM155R71H104ME14D
Murata Electronics North America
C7
4700pF
50V
±10%
GRM155R71H472KA01J
Murata Electronics North America
C8
1µF
10V
±10%
GRM155R61A105KE01D
Murata Electronics North America
C9
0.10µF
50V
±20%
GRM155R71H104ME14D
Murata Electronics North America
C10
0.10µF
50V
±20%
GRM155R71H104ME14D
Murata Electronics North America
C11
0.10µF
50V
±20%
GRM155R71H104ME14D
Murata Electronics North America
C12
0.10µF
50V
±20%
GRM155R71H104ME14D
Murata Electronics North America
C13
0.047µF
50V
±10%
GRM155R71H473KE14D
Murata Electronics North America
C14
22uF
35V
20%
C3216X5R1V226M160AC
TDK
C15
22uF
20%
C3216X5R1V226M160AC
TDK
C16
0.10µF
50V
±20%
GRM155R71H104ME14D
Murata Electronics North America
C17
47nF
5%
CGA5H2C0G1H473J
TDK
C18
0.047µF
50V
±10%
GRM155R71H473KE14D
Murata Electronics North America
C19
NP
1000pF
100V
±10%
GRM155R72A102KA01D
Murata Electronics North America
C20
NP
1000pF
100V
±10%
GRM155R72A102KA01D
Murata Electronics North America
C21
22uF
35V
20%
C3216X5R1V226M160AC
TDK
C22
22uF
35V
20%
C3216X5R1V226M160AC
TDK
C23
0.10µF
50V
±20%
GRM155R71H104ME14D
Murata Electronics North America
C24
47nF
100V
5%
CGA5H2C0G1H473J
TDK
C25
NP
10000pF
100V
±5%
GRM3195C2A103JA01D
Murata Electronics North America
C26
0.10µF
50V
±20%
GRM155R71H104ME14D
Murata Electronics North America
C27
0.10µF
50V
±20%
GRM155R71H104ME14D
Murata Electronics North America
C28
10µF
10V
±10%
GRM21BR71A106KE51L
Murata Electronics North America
C29
0.015µF
50V
±2%
GRM2195C1H153GA01D
Murata Electronics North America
C30
0.015µF
50V
±2%
GRM2195C1H153GA01D
Murata Electronics North America
C31
0.10µF
50V
±20%
GRM155R71H104ME14D
Murata Electronics North America
C32
0.10µF
50V
±20%
GRM155R71H104ME14D
Murata Electronics North America
C33
10µF
35V
±10%
GRM319R6YA106KA12D
Murata Electronics North America
C34
10µF
35V
±10%
GRM319R6YA106KA12D
Murata Electronics North America
C35
10µF
35V
±10%
GRM319R6YA106KA12D
Murata Electronics North America
User Guide
LKCH‐TXRX40W‐EVB
Rev 1.2
Oct‐18
www.semtech.com
29 of 41
Semtech
C36
10µF
35V
±10%
GRM319R6YA106KA12D
Murata Electronics North America
C37
NP
0.10µF
50V
±20%
GRM155R71H104ME14D
Murata Electronics North America
C38
10000pF
50V
±10%
GRM155R71H103KA88D
Murata Electronics North America
C39
10pF
50V
±5%
GRM1555C1H100JA01D
Murata Electronics North America
C40
0.10µF
50V
±20%
GRM155R71H104ME14D
Murata Electronics North America
C41
NP
1nF
200V
10%
C1206C102K2REC7210
KEMET
C42
0.047µF
50V
±10%
GRM155R71H473KE14D
Murata Electronics North America
C43
4.7µF
50V
±10%
GRM21BR61H475KE51L
Murata Electronics North America
C44
22µF
10V
±20%
GRM188R61A226ME15D
Murata Electronics North America
C46
4.7µF
6.3V
±10%
GRM188R60J475KE19D
Murata Electronics North America
C47
0.10µF
50V
±20%
GRM155R71H104ME14D
Murata Electronics North America
C48
1µF
10V
±10%
GRM155R61A105KE01D
Murata Electronics North America
C49
330pF
50V
±10%
GRM155R71H331KA01J
Murata Electronics North America
C50
0.022µF
50V
±10%
GRM155R71H223KA12J
Murata Electronics North America
C51
1000pF
50V
±10%
GCM155R71H102KA37D
Murata Electronics North America
C52
0.10µF
50V
±20%
GRM155R71H104ME14D
Murata Electronics North America
C53
22uF
35V
20%
C3216X5R1V226M160AC
TDK
C54
22uF
35V
20%
C3216X5R1V226M160AC
TDK
D1
APHB1608ZGSURKC
Kingbright
D2
30V
BAT54SWT1G
On Semiconductor
D3
250V
BAS101S,215
NXP
D4
250V
BAS21‐03W
J2
J3
J4
L1
600
BLM18AG601SN1D
Murata
L2
22uH
XAL6060‐223
Coilcraft
L3
4.7uH
MLP2012S4R7M
TDK
L4
1:100
PA0368.100NLT
Pulse
Q1
40V
IPG20N04S4L‐11A
Infineon
Q2
40V
IPG20N04S4L‐11A
Infineon
Q3
60V
2N7002
Nexperia
Q4
60V
2N7002
Nexperia
Q5
60V
2N7002
Nexperia
Q6
60V
2N7002
Nexperia
Q9
NP
‐40V
DMP4047LFDE
Diodes Inc.
Q10
NP
‐40V
DMP4047LFDE
Diodes Inc.
Q11
NP
60V
2N7002
Nexperia
Q12
55V
IPG20N06S2L‐50
Infineon
R01
0.0
Jumper
ERJ‐2GE0R00X
Panasonic Electronic Components
R1
1
±1%
ERJ‐2BQF1R0X
Panasonic Electronic Components
User Guide
Rev 1.2
LKCH‐TXRX40W‐EVB
Oct‐18
www.semtech.com
30 of 41
Semtech
R02
0.0
Jumper
ERJ‐2GE0R00X
Panasonic Electronic Components
R2
1
±1%
ERJ‐2BQF1R0X
Panasonic Electronic Components
R03
0.0
Jumper
ERJ‐2GE0R00X
Panasonic Electronic Components
R3
10k
±1%
ERJ‐2RKF1002X
Panasonic Electronic Components
R04
0.0
Jumper
ERJ‐2GE0R00X
Panasonic Electronic Components
R4
10k
±1%
ERJ‐2RKF1002X
Panasonic Electronic Components
R5
100k
±1%
ERJ‐2RKF1003X
Panasonic Electronic Components
R6
4.7k
±1%
ERJ‐2RKF4701X
Panasonic Electronic Components
R7
NP
10k
±1%
ERJ‐2RKF1002X
Panasonic Electronic Components
R8
NP
10k
±1%
ERJ‐2RKF1002X
Panasonic Electronic Components
R9
150
±1%
ERJ‐2RKF1500X
Panasonic Electronic Components
R10
150
±1%
ERJ‐2RKF1500X
Panasonic Electronic Components
R11
75k
±1%
ERJ‐2RKF7502X
Panasonic Electronic Components
R12
133k
±1%
ERJ‐2RKF1333X
Panasonic Electronic Components
R13
10k
±1%
ERJ‐2RKF1002X
Panasonic Electronic Components
R14
10k
±1%
ERJ‐2RKF1002X
Panasonic Electronic Components
R15
20k
±1%
ERJ‐2RKF2002X
Panasonic Electronic Components
R16
1
±1%
ERJ‐2BQF1R0X
Panasonic Electronic Components
R17
20k
±1%
ERJ‐2RKF2002X
Panasonic Electronic Components
R18
10k
±1%
ERJ‐2RKF1002X
Panasonic Electronic Components
R19
10k
±1%
ERJ‐2RKF1002X
Panasonic Electronic Components
R20
0.0
Jumper
ERJ‐2GE0R00X
Panasonic Electronic Components
R21
20k
±1%
ERJ‐2RKF2002X
Panasonic Electronic Components
R22
1
±1%
ERJ‐2BQF1R0X
Panasonic Electronic Components
R23
20k
±1%
ERJ‐2RKF2002X
Panasonic Electronic Components
R24
200
±1%
ERJ‐8ENF2000V
Panasonic Electronic Components
R25
100k
±1%
ERJ‐2RKF1003X
Panasonic Electronic Components
R26
34k
±1%
ERJ‐2RKF3402X
Panasonic Electronic Components
R27
NP
10k
±1%
ERJ‐2RKF1002X
Panasonic Electronic Components
R28
4.99k
±1%
ERJ‐2RKF4991X
Panasonic Electronic Components
R29
499k
±1%
ERJ‐2RKF4993X
Panasonic Electronic Components
R30
10k
±1%
ERJ‐2RKF1002X
Panasonic Electronic Components
R31
1k
±1%
ERJ‐2RKF1001X
Panasonic Electronic Components
R32
NP
20k
±1%
ERJ‐2RKF2002X
Panasonic Electronic Components
R33
NP
10k
±1%
ERJ‐2RKF1002X
Panasonic Electronic Components
R34
9.09k
±1%
ERJ‐2RKF9091X
Panasonic Electronic Components
R35
7.5k
±1%
ERJ‐2RKF7501X
Panasonic Electronic Components
R36
200k
±1%
ERJ‐2RKF2003X
Panasonic Electronic Components
R37
20k
±1%
ERJ‐2RKF2002X
Panasonic Electronic Components
R38
7.5k
±1%
ERJ‐2RKF7501X
Panasonic Electronic Components
R39
7.5k
±1%
ERJ‐3EKF7501V
Panasonic Electronic Components
User Guide
LKCH‐TXRX40W‐EVB
Rev 1.2
Oct‐18
www.semtech.com
31 of 41
Semtech
R40
100k
±1%
ERJ‐2RKF1003X
Panasonic Electronic Components
R41
R42
2.49k
3.3
±1%
ERJ‐2RKF2491X
Panasonic Electronic Components
±5%
ERJ‐2GEJ3R3X
Panasonic Electronic Components
R43
10k
±1%
ERJ‐2RKF1002X
Panasonic Electronic Components
R44
1
±1%
ERJ‐2BQF1R0X
Panasonic Electronic Components
R45
20k
±1%
ERJ‐2RKF2002X
Panasonic Electronic Components
R46
715k
±1%
ERJ‐2RKF7153X
Panasonic Electronic Components
R47
47k
±1%
ERJ‐2RKF4702X
Panasonic Electronic Components
R48
10k
±1%
ERJ‐2RKF1002X
Panasonic Electronic Components
R49
20
±1%
ERJ‐3EKF20R0V
Panasonic Electronic Components
R50
1k
±1%
ERJ‐2RKF1001X
Panasonic Electronic Components
R51
10k
±1%
ERJ‐2RKF1002X
Panasonic Electronic Components
R52
133k
±1%
ERJ‐2RKF1333X
Panasonic Electronic Components
R53
1
±1%
ERJ‐2BQF1R0X
Panasonic Electronic Components
R54
1
±1%
ERJ‐2BQF1R0X
Panasonic Electronic Components
R55
10k
±1%
ERJ‐2RKF1002X
Panasonic Electronic Components
U1
TS80003
Semtech
U2
TS61002
Semtech
U3
SC508ULTRT
Semtech
U4
TL431ACDBZTG4
Texas Instruments
U5
TS30041
Semtech
Rx Coil Specifications:
Vendor
Part Number
Inductance
DCR (Max.)
Dimension (Max.)
TDK
WT505090‐20K2‐A10‐G
12.3±15%uH
100mΩ
Ø50mm
User Guide
Rev 1.2
LKCH‐TXRX40W‐EVB
Oct‐18
www.semtech.com
32 of 41
Semtech
D. Board Layout
The diagram below shows the locations of the components used in the TSDMRX‐19V/40W‐EVM PCB.
The TSDMRX‐19V/40W‐EVM PCB is based on a four‐layer design as shown below. The ground plane on layer two is
recommended to reduce noise and signal crosstalk. The EVM placed all components on the top of the board for
easier evaluation of the system. End‐product versions of this design can be made significantly smaller by distributing
components on both sides of the board. The Gerber files for this artwork can be downloaded from the Semtech web
page.
User Guide
LKCH‐TXRX40W‐EVB
Rev 1.2
Oct‐18
www.semtech.com
33 of 41
Semtech
Top Layer
Layer 2
User Guide
Rev 1.2
LKCH‐TXRX40W‐EVB
Oct‐18
www.semtech.com
34 of 41
Semtech
Layer 3
Bottom Layer
User Guide
LKCH‐TXRX40W‐EVB
Rev 1.2
Oct‐18
www.semtech.com
35 of 41
Semtech
Efficiency Measurement
By measuring the power from the receiver’s VOUT and GND pins in comparison to the power entering the transmitter
EVM, one can determine the efficiency of the power transfer through the system. For the EVMs used here, the
diagram below demonstrates that efficiency is a function of output current, and runs about 50% at higher power
levels, assuring good efficiency and minimal heat dissipation concerns.
Transmitter is Semtech TSDMTX‐24V3‐EVM.
User Guide
Rev 1.2
LKCH‐TXRX40W‐EVB
Oct‐18
www.semtech.com
36 of 41
Semtech
Firmware Management
The EVM is shipped with the latest released version of the firmware at the time it was manufactured. However, as
the standard evolves, or enhancements are made to the board performance, the firmware updates will be available
at
https://www.semtech.com/power‐management/wireless‐charging‐ics/wiireless‐charging‐evm‐
firmware/index.html.
Equipments for FW update:
Device
Qty.
TSDMTX‐24V3‐EVM
1
Universal USB TO UART adapter
1
Semtech TS80003 programming app
1
TS80003 programming app allows you install the latest firmware to your board, and also to interrogate the board as
to which version of the firmware is currently installed. Here is the link in the Semtech website to download TS8000X
GUI file, Docs& Resources item:
https://www.semtech.com/products/wireless‐charging/linkcharge‐ics/TS80003
Step 1:
Connect TS80003 board to PC via USB‐UART adapter
TS80003 ‐ VCC
‐‐>
PC ‐ 3.3V (if TS80003 is powered by other supply, then don’t connect VCC pin)
TS80003 ‐ Pin 39
‐‐>
PC – TXD
TS80003 ‐ Pin 40
‐‐>
PC ‐ RXD
TS80003 ‐ Ground
‐‐>
PC ‐ Ground
Step 2:
Open the TS80003 programming app, click “Port” botton
Step 3:
Choose the correct port from the right drop‐down box, then click “Select Port” botton
Step 4:
Click “Read Mode” botton
If the right box shows “Bootloader mode”, then jump to Step 6 directly
If the right box shows “Firmware mode”, then click “Reset” botton, and wait until the box shows ”Resetted to
Bootloader mode”
Step 5:
Click “Slect Firmware” botton and then choose the firmware to be downloaded
Step 6:
Wait for 2s, then click “Program” botton and wait unitl programming is finished
User Guide
LKCH‐TXRX40W‐EVB
Rev 1.2
Oct‐18
www.semtech.com
37 of 41
Semtech
FAQs
Q: What output voltage is provided by the TSDMTX‐24V3‐EVM system?
A: It depends on which receiver is being used. For the TSDMRX‐19V/40W‐EVM, the output would be 19 volts, at up
to 40‐W output power. If the TSDMRX‐5W‐EVM was used, the output would be 5 volts, at up to 5 watts.
Q: Where can I find more information on the Qi standards?
A: There are a number of websites that address this subject. A good starting point for Qi would be:
http://www.wirelesspowerconsortium.com/technology/how‐it‐works.html.
Q: Does the TX EVM part number represent something in particular?
A: Yes. The part number is broken into a prefix, main body, and suffix, separated by dashes. The prefix is comprised
of three two letter groupings that each help define the product represented. As such, the part number can be read
as follows:
Prefix characters:
1+2 = Company :
TS = Triune/Semtech
3+4 = Environment :
DM = Dual Mode
WI = Wearable Infrastructure
5+6 = Type :
TX = Transmit
RX = Receive
Mid-section = Device Voltage and/or Wattage
Suffix = Equipment type:
EVM = Evaluation Module
MOD = Production Module
Therefore, the TSDMTX‐24V3‐EVM is a Dual Mode, 24‐volt Transmitter Evaluation Module provided by Semtech.
Q: Does the RX EVM part number represent something in particular?
A: Yes. The part number is broken into a prefix, main body, and suffix, separated by dashes. The prefix is comprised
of three two letter groupings that each help define the product represented. As such, the part number can be read
as follows:
User Guide
Rev 1.2
LKCH‐TXRX40W‐EVB
Oct‐18
www.semtech.com
38 of 41
Semtech
Prefix characters:
1+2 = Company :
TS = Triune/Semtech
3+4 = Environment :
DM = Dual Mode
WI = Wearable Infrastructure
5+6 = Type :
TX = Transmit
RX = Receive
Mid-section = Device Voltage and/or Wattage
Suffix = Equipment type:
EVM = Evaluation Module
MOD = Production Module
Therefore, the TSDMRX‐19V/40W‐EVM is a Dual Mode, 40W Receiver Evaluation Module provided by Semtech.
Q: What if my questions weren’t answered here?
A: Please visit the Semtech website as described on the next page. An updated FAQ for the TSDMTX‐24V3‐EVM is
maintained there and may contain the answers you’re looking for. Your local Semtech FAE can also assist in
answering your questions.
User Guide
LKCH‐TXRX40W‐EVB
Rev 1.2
Oct‐18
www.semtech.com
39 of 41
Semtech
Next Steps
For more information on Wireless Power, go to the Semtech webpage at:
https://www.semtech.com/power‐management/wireless‐charging‐ics/
You may also scan the bar code to the right to go to the above web page:
There you can find the downloadable copies of the schematic, BOM, and board artwork, as well as additional
information on how to obtain Semtech wireless power products, from the chip level all the way to complete board
modules, as your needs require.
User Guide
Rev 1.2
LKCH‐TXRX40W‐EVB
Oct‐18
www.semtech.com
40 of 41
Semtech
IMPORTANT NOTICE
Information relating to this product and the application or design described herein is believed to be reliable, however such information
is provided as a guide only and Semtech assumes no liability for any errors in this document, or for the application or design described
herein. Semtech the latest relevant information before placing orders and should verify that such information is current and complete.
Semtech reserves the right to make changes to the product or this document at any time without notice. Buyers should obtain warrants
performance of its products to the specifications applicable at the time of sale, and all sales are made in accordance with Semtech’s
standard terms and conditions of sale.
SEMTECH PRODUCTS ARE NOT DESIGNED, INTENDED, AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN LIFE‐SUPPORT
APPLICATIONS, DEVICES OR SYSTEMS, OR IN NUCLEAR APPLICATIONS IN WHICH THE FAILURE COULD BE REASONABLY EXPECTED TO
RESULT IN PERSONAL INJURY, LOSS OF LIFE OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. INCLUSION OF SEMTECH PRODUCTS
IN SUCH APPLICATIONS IS UNDERSTOOD TO BE UNDERTAKEN SOLELY AT THE CUSTOMER’S OWN RISK. Should a customer purchase or
use Semtech products for any such unauthorized application, the customer shall indemnify and hold Semtech and its officers,
employees, subsidiaries, affiliates, and distributors harmless against all claims, costs damages and attorney fees which could arise.
The Semtech name and logo are registered trademarks of the Semtech Corporation. All other trademarks and trade names mentioned
may be marks and names of Semtech or their respective companies. Semtech reserves the right to make changes to, or discontinue any
products described in this document without further notice. Semtech makes no warranty, representation or guarantee, express or
implied, regarding the suitability of its products for any particular purpose. All rights reserved.
© Semtech 2018
Contact Information
Semtech Corporation
200 Flynn Road, Camarillo, CA 93012
Phone: (805) 498‐2111, Fax: (805) 498‐3804
www.semtech.com
User Guide
LKCH‐TXRX40W‐EVB
Rev 1.2
Oct‐18
www.semtech.com
41 of 41
Semtech
工商网监
湘ICP备2023018690号
