USER MANUAL Multi-Functional Smartphone Terminal WCA NFC 2.0 1 2 1. System Description Continental Wireless Power Charger is developed for automotive applications under the name WCA NFC 2.0 which includes two functions like:
o WPC: Wireless power charger; WPC Function 126.6kHz o NFC: Near Field Communication; NFC Function 13.56MHz The WCA NFC 2.0 module and its implementation inside the vehicle is depicted in Fig. 1. Its assembly instruction is done by professional workers. Therefore, the product cannot be moved or switched to another position by the end user. Fig. 1: WCA NFC 2.0 module and its implementation inside the vehicle WCA NFC 2.0 charger uses Qi standard of Wireless Power Consortium (WPC) for enabling wireless charging from a base station unit to mobile device. The power transfer method is based on near field magnetic induction between coils. 3 System Overview The structure of wireless power transfer proposed in Fig. 2 shows an overview of the system with two kinds of distinguished devices: Base station and Mobile device. Base station comprises two main functional units per mode (WPC and NFC), namely power conversion units and Communications & Control units for delivering, controlling and regulating the transferred power. Mobile device (power receiver) comprises a power pick up unit and a communications & control unit for achieving power requirements and charging the device battery if is chargeable device or establishing an active NFC communication. Fig. 2: Wireless power transfer structure: WPC and NFC 4 1.2 Wireless Power Charger Description The WCA NFC 2.0 is mainly composed of 6 parts as depicted in Fig.3. 1 2 3 4 5 6 Fig. 3: WCA NFC 2.0 split view 1. Top housing 2. Antenna PCB 3. WPC coil + Ferrite + Plastic Holder 4. Main PCB with 8 ways connector: diagram below in Fig 4, pins description in Table1. Fig 4. Connector diagram Table 1. Connector description 5. Bottom Housing + Fan cover 6. Fan 5 A picture of a serial production part is shown in Fig. 5.
(a)
(b) Fig. 5: Serial product WCA NFC 2.0. (a) top view and (b) side view. 1.3 WCA NFC 2.0 modes According to the Qi standard, a simple operational description of wireless power transfer can be summarized in two principle operational modes:
The first mode with a defined burst sequence allows the transmitter to detect an object on the charging surface: IDLE mode The second mode allows the power transfer from the base station to the mobile device, placed on the charging surface: Charging mode The transition between these two modes is realized through a transient mode: Detection mode. which only occurs when the Mobile device is placed on the charging surface. 1.4 Product parameters Below in table 2, the technical parameters of the WCA NFC 2.0 product are specified:
Values 12V battery 8V < Vbat < 16V 30W
-40C < Temp < 85C 3A 7.5A 230 g 139/80/17.5 (31.5 at FAN level) Parameters Supply voltage Voltage supply range Max. power consumption Product Operating temperature range Max.current consumption Vehicle fuse protection Product weight Dimensions (X/Y/Z in mm) 1.5 WPC parameters Parameters Carrier frequency Frequency shift WPC chipset brand Data rate max (FSK) WPC litz coil WPC litz coil gain @ 126.6kHz Max. output power Max. H field @10m (@ 126.6kHz) Table 2: Product technical parameters Below in table 3, the technical parameters of the WPC feature are specified:
Values 126.6 kHz
+/- 6 kHz IDT 0.247 kbps MPA21 Triple coil according to Qi Standard
-108.4 dBi 15W 7.3 dBA/m Table 3: WPC technical parameters of WCA NFC 2.0 6 Below in table 4, the technical parameters of the NFC feature of WCA NFC 2.0:
Table 4: NFC technical parameters of WCA NFC 2.0 The NFC block is composed of three antennas: Main, Side1 and Side 2 antenna. The electrical parameters of the NFC antenna are listed in the following tables (5,6 and 7):
Main NFC antenna:
Values Planar printed coil on PCB 3 106mm x 52 mm
-51.38 Table 5: Main NFC antenna technical parameters NFC Parameters 1.6 Parameters Carrier frequency Modulation type Data rate max. NFC chipset brand NFC chipset model number Max. H field @10m (@ 13.56 MHz) 1.7 NFC antenna Parameters Antenna type Number of turns Antenna size Antenna Gain (dBi) @ 13.56MHz Side 1 NFC antenna:
Parameters Antenna type Number of turns Antenna size Antenna Gain (dBi) @ 13.56MHz Side 2 NFC antenna:
Parameters Antenna type Number of turns Antenna size Antenna Gain (dBi) @ 13.56MHz Values 13.56 MHz Amplitude Shift Keying (ASK) 848 kbps NXP Semiconductors NCF3340EHN 4 dBA/m Values Planar printed coil on PCB 3 59mm x 13.8mm x 10mm
-58.58 Values Planar printed coil on PCB 3 59mm x 13.8mm x 10mm
-57.07 Table 6: Side 1 NFC antenna technical parameters Table 7: Side 2 NFC antenna technical parameters 2. Overview of WCA NFC 2.0 Here below the product overview of WCA NFC 2.0:
Ref WPC NFC Top View Bottom View WCA NFC 2.0 Yes Yes Table 7: WCA NFC 2.0 overview. 7 3. Label content BELARUS BRAZIL CANADA This device complies with part 15 of the FCC Rules and Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired operation. Le prsent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorise aux deux conditions suivantes :
(1) Lappareil ne doit pas produire de brouillage, et
(2) Lutilisateur de l'appareil doit accepter tout brouillage radiolectrique subi, mme si le brouillage est susceptible den compromettre le fonctionnement. INDONESIA
[certificate no.]
[PLG. ID no.]
MEXICO La operacin de este equipo est sujeta a las siguientes dos condiciones:
(1) es posible que este equipo o dispositivo no cause interferencia perjudicial y 8 HHHHH-AA-FFFFF
(2) este equipo o dispositivo debe aceptar cualquier interferencia, incluyendo la que pueda causar su operacin no deseada. MOLDOVA NIGERIA KKK PARAGUAY Importer/dealer in Paraguay:
[Address of the importer/dealer]
[Local phone of the importer/dealer]
SINGAPORE SOUTH AFRICA TA-YEAR/XXXX 9 USA TAIWAN Taiwan regulatory information(NCC) Article 12 Without permission granted by the NCC, any company, enterprise, or user is not allowed to change frequency, enhance transmitting power or alter original characteristic as well as performance to a approved low power radio-frequency devices. Article 14 The low power radio-frequency devices shall not influence aircraft security and interfere legal communications; If found, the user shall cease operating immediately until no interference is achieved. The said legal communications means radio communications is operated in compliance with the Telecommunications Act. The low power radio-frequency devices must be susceptible with the interference from legal communications or ISM radio wave radiated devices. UKRAINE
" Continental Automotive GmbH, Siemensstrasse 12, 93055 Regensburg , :
Qi standard, NFC standard. M: WCA NFC 2.0
: https:www.continental-automotive.com FCC 15.19 Labelling requirements
"This device complies with part 15 of the FCC Rules and Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired operation."
FCC 15.21 Information to user
"Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment."
RF Exposure Requirements To comply with FCC RF exposure compliance requirements, the device must be installed to provide a separation distance of at least 20 cm from all persons. 10