TSDM MRX-5V//10W-EV VM Wirreless Charging g Receiv ver WIRELE ESS CHAR RGING Userr Guid de TS SDMR RX-5V V/10W W-EV VM Dua al-Mo ode (Q Qi an nd PM MA) R Receiv ver www w.semtech.com m Introduction The Semtech TSDMRX-5V/10W-EVM is an evaluation platform for test and experimentation of a wireless charging receiver based on the Semtech TS81000 Wireless Power Receiver communications and control unit for wireless charging applications. TS51111 is a fully-integrated synchronous rectifier, and SC414 is 6A integrated FET Regulator. This evaluation module provides a complete system solution for both Qi and PMA standards of power receiver, making this reciever an ideal platform for powering the majority of wireless transmiter in use today. Objectives The objective of this User Guide is to provide a fast, easy and thorough method to experiment with and evaluate the Semtech solutions for wireless charging systems. Sufficient information is provided to support the engineer in all aspects of adding wireless charging support to their products. 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 TS81000 and other Semtech components. Table of Contents Wireless Charging Concepts ................................................................................................................................................ 4 Product Description ............................................................................................................................................................... 5 Standard Use............................................................................................................................................................................ 6 Documentation ....................................................................................................................................................................... 7 A. Schematic ................................................................................................................................................................. 7 B. Bill Of Materials "BOM"......................................................................................................................................... 8 C. Board Layout ........................................................................................................................................................... 9 D. Board Layers ..........................................................................................................................................................11 FAQs ......................................................................................................................................................................................... 15 Next Steps ............................................................................................................................................................................... 16 . Wireless Charging User Guide TSDMTX-19V1-EVM www.semtech.com Rev 0.95 Jan 2016 3 of 16 Semtech Wireless Charging Concepts Wireless power transfer is, essentially, a transformer. Power 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 Receiver Controller FET Array Transmitter Power Supply Control Switching Supply 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 TS80000, 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 is being sent, and that none 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. Should the receiver require no further power, such as when a battery charge is completed, it can request no further power be sent, and the transmitter will reduce its output accordingly. Wireless power systems have been broken into three basic power categories. "Wearable" devices, such as headsets, wrist-band devices, medical sensors, and so forth, all operate in the low power range, up to 5 watts. Medium power devices, in the 5- to 15-watt range, include most handheld devices, such as cell phones, tablets, and medical electronics. High power wireless systems are intended to support devices such as power tools, radio controlled ("RC") devices such as drones, and other equipment requiring 15 to 100 watts of power. Wireless Charging User Guide TSDMTX-19V1-EVM www.semtech.com Rev 0.95 Jan 2016 4 of 16 Semtech Product Description TS51111 is a fully-integrated synchronous rectifier for wireless charging applications with additional integrated components to minimize system BOM.TS81000 is a power receiver communications and control unit for wireless charging applications. The TS81000 can support Qi compliant, PMA compliant and proprietary applications. The TS81000 performs the necessary coding of packets to send commands to the transmitter to adjust the power level accordingly. All the necessary function components occupy a 16mmX25mm of PCB area. EVB Jumper introduction 1. 2. 3. 4. J1 is coil connector; J2 is input connector, micro-USB connector is used. Micro-USB is selected firstly when there are both micro-USB connector input and Tx board wireless charge input. J3 and J4 are output connectors in parallel, J3 is for USB output, and J4 for output current up to 2A. J5,J6 is programme updated for TS51111 connector, and normally not used. Wireless Charging User Guide TSDMTX-19V1-EVM www.semtech.com Rev 0.95 Jan 2016 5 of 16 Semtech Standard Use 1. 2. 3. 4. Power up TSDMTX-19V1-EVM from Semtech, or any other Dual Mode(Qi+PMA) up to 15W transmitor; Place Rx EVB boards on top of the Tx EVM; Connect e-load to J4 between VOUT+ and GND on Rx board; Set the required output current (0A-2A) with electrical loads in CC mode and start the evaluations. Caution: maximum load transients on the output of the RX EVM should NOT exceed 5W per second. A 100% load transient is not valid in a typical application use case. For best performance, Rx EVM should be located right in the center of Tx EVM plastic. Measure Efficiency By measuring the power from the receiver's VOUT+ and VOUT- pins of the receiver in comparison to the power entering the tramsmitter EVM, you can determine the efficiency of the power transfer through the system. The diagram below, for the EVMs used here, demonstrates efficiency is a function of output current, and runs about 75% at beyond the mid-power point, assuring good efficiency and mimimal heat dissipation concerns. Load VS efficiency 90.00% 80.00% 70.00% efficiency 60.00% 50.00% 40.00% 30.00% 20.00% 10.00% 0.00% 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 output current(A) Wireless Charging User Guide TSDMTX-19V1-EVM www.semtech.com Rev 0.95 Jan 2016 6 of 16 Semtech Documentation The follow wing sections document d the hardware desiign of the TSD DMRX-5V/10W--EVM. A. Sch hematicc Below are the schematiccs for the TSDM MRX-5V/10W-EEVM. Wireless Cha arging User Guide TSDMTX-19V V1-EVM www.se emtech.com Rev v 0.95 Jan n 2016 7 of 16 Se emtech B. Billl Of Matterials "BOM" Below is a listing of the parts p used in th he TSDMRX-5V V/10W-EVM. A An excel spread dsheet file with this information is available on o the Semtech website as an a added convvenience. Wireless Cha arging User Guide TSDMTX-19V V1-EVM www.se emtech.com Rev v 0.95 Jan n 2016 8 of 16 Se emtech Designator Qty. 1 C3, C4, C25, C26 Manufacturer Code Footprint 4 Manufacturer 1206 1206 10uF 25V X7R 2 C1, C12 2 402 0402 220nF 25V 3 C5, C15,C21, C22, C23 5 C0603C104K5RAC7867 402 0402 100nF 50V 4 C6, C10 2 402 0402 22nF 50V 5 C7 1 402 0402 100pF 50V 6 C8 1 402 0402 1.8nF 50V 7 C13, C18 2 402 0402 1uF 6.3V 8 C16 1 402 0402 2.2nF 10V 9 C17,C24 2 402 0402 10nF 10V 10 C32 1 402 0402 4.7nF 50V 11 C33 1 402 0402 33pF 50V 12 R2,R14 2 402 0402 0R 13 R3,R12, R13, R15, R16 NP 402 NP 14 R4, R7, R8, R11, R18, R24,R25,R26,R29,R31 10 402 0402 10K 15 R20 1 402 0402 10.2K 16 R5,R33 2 402 0402 1R 17 R30,R34 2 402 0402 4.99K 18 R35 1 402 0402 20K 19 R28 1 402 0402 97.6K 20 R19 1 402 0402 57.6K 21 R32 1 402 51.1K 22 R9, R10 3 402 0402 100K 23 R17, R21 2 402 0402 75K 24 D1 1 402 0402 Green 25 R27 1 402 0402 510R 26 C14 1 603 0603 10uF 6.3V 27 C31,C36,C37 3 402 0402 1uF 10V 28 C19, C20 2 UMK107ABJ474KA-T 603 0603 470nF 50V 29 R6 1 WSL0603R0200FEA 603 0603 0.02R 0.1W 30 C28, C29, C30 3 805 0805 22uF25V X7R 31 C35 1 402 0402 330pF 10V 32 R1 1 33 C2, C9, C11 3 CGA5H2C0G1H473J 1206 or 0805 1206 47nF 50V C0G 34 J4,J5,J6 3 Connector 1x4Pin HDR HDR 1x4Pin 2.54mm 35 U4 1 IP4221CZ6-S,115 DFN1410-6N 36 L1 1 805 0805 200R USB ESD Protection 4.7uH 6A 37 U3 1 FSUSB43L10X QFN USB Data Sw itch 38 Q1, Q2 2 DMN3404L-7 SOT23-3N N-Channel Pow er MOSFET 39 Q3, Q4 2 DMP2305U-7 SOT23-3N P-Channel Pow er MOSFET 40 Q5 1 2N7002 SOT23-3N N-channel Enhancement Mode Field-effect Transistor 41 U2 1 TS81000-QFNR UFQFPN Wireless Pow er Receiver Controller 42 J3 1 CONN_USB_A_Plug USB_A USB, Receptacle, 4 Position, Through-Hole 43 J2 1 ZX62D-B-5P8 USB_Micro-B Micro-B USB, Receptacle, 5 Position, SMT and Trough-Hole 44 U1 1 TS51111-M22WCSR WCSP Synchronous Rectifier and Direct Charging IC 45 J1 1 760308103215 46 TP1,TP2,TP3,TP4,TP6,TP7,TP8,TP10,TP5,TP9 47 U5 10 Test Point 1 SC414MLTRT 48 Q6 MLPQ-28 4X4 NP C. Board Layout The diagram below shows the locations of the components used in the TSDMRX-5V/10W-EVM PCB. Wireless Charging User Guide TSDMTX-19V1-EVM www.semtech.com Rev 0.95 Jan 2016 9 of 16 Semtech Wireless Cha arging User Guide TSDMTX-19V V1-EVM www.se emtech.com Rev v 0.95 Jan n 2016 1 10 of 16 Se emtech D. Boa ard Laye ers The TSDMXR-5V/10W-EV VM PCB is base ed on a four layyer design as sshown below. The ground p plane in layer two is recommen nded to reduce e noise and sig gnal crosstalk. The EVM placced all compon nents on the to op of the boarrd for easier evalluation of the system. End product version ns of this desig gn can be mad de significantlyy smaller by distributin ng componentts on both side es of the board d. The Gerber ffiles for this arttwork can be d downloaded frrom the Semtech web page. Top T Layer Wireless Cha arging User Guide TSDMTX-19V V1-EVM www.se emtech.com Rev v 0.95 Jan n 2016 1 11 of 16 Se emtech Grround Plane Wireless Cha arging User Guide TSDMTX-19V V1-EVM www.se emtech.com Rev v 0.95 Jan n 2016 1 12 of 16 Se emtech Signal Layer Wireless Cha arging User Guide TSDMTX-19V V1-EVM www.se emtech.com Rev v 0.95 Jan n 2016 1 13 of 16 Se emtech Bottom Layer Wireless Charging User Guide TSDMTX-19V1-EVM www.semtech.com Rev 0.95 Jan 2016 14 of 16 Semtech FAQs Q: Where can I find more information on the Qi and PMA 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 . PMA, which is now joined with A4WP, is now called AirFuel. Information on them can be found at the following website: http://www.airfuel.org/technologies/inductive . Q: Does the 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 = Receiver Mid-section = Device Voltage and/or Wattage. Suffix = Equipment type: EVM = Evaluation Module MOD = Production Module Therefore, the TSDMRX - 5V /10W- EVM is a Dual Mode, 5 volt Reciever Evaluation Module provided by Semtech, power up to 10W. Q: What if my questions weren't answered here? A: Go to the Semtech website as described on the next page. An updated FAQ for the TSDMRX-5V/10W-EVM is maintained there and may contain the answers you're looking for. Wireless Charging User Guide TSDMTX-19V1-EVM www.semtech.com Rev 0.95 Jan 2016 15 of 16 Semtech Next Steps S For more information on n the TSDMRX--5V10W-EVM, go to the Sem mtech webpagee at: http://www w.semtech.com m/power-man nagement/wire eless-charging g-ics/evaluatio on-kits There you can find the downloadable e copies of th he schematic, BOM, and boaard artwork, aas well as additional informatio on on how to obtain Semte ech wireless power productts, from the ch hip level all th he way to com mplete board mod dules, as your needs require. a scan the bar code below w to go directlyy to the Semteech web page ffor further TSD DMRX-5V10W--EVM You may also informatio on: Wireless Cha arging User Guide TSDMTX-19V V1-EVM www.se emtech.com Rev v 0.95 Jan n 2016 1 16 of 16 Se emtech IMPORTA ANT NOTICE Information relating to this product and the application or design descriibed herein is beelieved to be relliable, however ssuch information is provided as a guide onlly and Semtech assumes no liaability for any eerrors in this do ocument, or for the application or design desscribed herein. Semtech S the latesst relevant infor mation before p placing orders an nd should verify that such info ormation is current and complete e. Semtech reserv ves the right to m make changes to the product or tthis document att any time with hout notice. Buye ers should obtain n warrants perfo ormance of its prroducts to the sp ecifications appllicable at the tim me of sale, and all sales are mad de in accordance e with Semtech's standard terms aand conditions o of sale. SEMTECH H PRODUCTS AR RE NOT DESIGNE ED, INTENDED, AUTHORIZED A OR R WARRANTED TO BE SUITABL LE FOR USE IN L LIFESUPPORT T APPLICATIONS S, DEVICES OR SYSTEMS, OR IN NUCLEAR AP PPLICATIONS IN N WHICH THE F FAILURE COULD D BE REASONA ABLY EXPECTED D TO RESULT IN N PERSONAL INJJURY, LOSS OF LIFE OR SEVER RE PROPERTY OR ENVIRONMEN NTAL DAMAGE E. INCLUSION OF SEMTECH PROD DUCTS IN SUCH APPLICATIONS A ISS UNDERSTOOD T TO BE UNDERTA AKEN SOLELY AT THE CUSTOMER'S OWN RISK. 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