Installation Guide

ManualsBrandsEtatronix ManualsElectronicsWireless Charger providing a USB Type-C interface

Installation Guide

1. Purpose

The purpose of this document is to provide information on how to integrate the Wireless Power

Transmitter (Model: 81909005) and Receiver (Model: 81909004) with

FCC ID: 2AOR81909004

into a final application.

Incorrect integration or use may infringe compliance rules meaning recertification may be required.

2. Module Description

The Wireless Power modules (Tx= power transmitter, Rx = power receiver) are designed to provide a high

eﬃciency power transmission of up to 13.5W to an USB Type-C device. This power transmission is using

a pair of tightly coupled power coils. An additional pair of inductive coupled coils is used to transfer control

information from the power receiver back to the transmitter to provide a safe operation at the optimum

working frequency.

The power transmission module input voltage is 24V DC.

To maximize the system eﬃciency, the power transmission between Wireless Transmitter and Receiver is

realized using resonant circuits. These resonant circuits additionally provide the ability to vary the

transmitted power by changing the switching frequency. By increasing the switching frequency, the

available power on the receiver side de-creases.

For an accurate output voltage regulation, a control loop is necessary. The output conditions like output

current, voltage and power are measured on the receiver side and sent to the power transmitter. If

corrections are necessary, the transmitter will change the switching frequency to the desired value.

An appropriate control loop needs a fast signal transmission with little delay. This transmission is

accomplished using a second pair of coupled coils. Like the power transmission coils, the signal coils form

a near ﬁeld coupling system thus the intended use of radio waves isn’t necessary.

Summary of content (14 pages)

PAGE 1
Installation Guide Installation Guide 1. Purpose The purpose of this document is to provide information on how to integrate the Wireless Power Transmitter (Model: 81909005) and Receiver (Model: 81909004) with FCC ID: 2AOR81909004 into a final application. Incorrect integration or use may infringe compliance rules meaning recertification may be required. 2.
PAGE 2
Installation Guide The following picture shows a block diagram of the complete system including Transmitter and Receiver.
PAGE 3
Installation Guide 3. Application Examples The system is designed to be used as a Wireless Charger for USB Type-C powered devices in medical environments (e.g. tablets). The Wireless Power Transmitter must be mounted on and powered by a base station. The Wireless Power Receiver can be connected with the USB Type-C device either using an USB type C compliant cable.
PAGE 4
Installation Guide The following pictures shows part of the front of a medical stationary device.
PAGE 5
Installation Guide The following pictures shows the enclosure for both Wireless Receiver and tablet with Receiver mounted and tablet not mounted. USB Type-C Connector USB Type compliant C Flex- Cable Receiver Enclosure The following pictures shows the enclosure for both Wireless Receiver and tablet with Receiver and tablet mounted. The tablet is connected with the Receiver using an USB-cable (see picture above and section “Integration into products”.
PAGE 6
Installation Guide The following pictures shows the enclosure with tablet and Wireless Receiver put on top of the stationary medical device.
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Installation Guide 4. Integration into Products Transmitter The input connector of the Wireless Power Transmitter is a TE Connectivity 1-178293-3. The Wireless Power Transmitter shall be mounted using the mounting holes provided by the manufacturer. M4 screws and hex nuts are recommended. Receiver The Wireless Power Receiver supplies a USB Type-C compliant power to the host application.
PAGE 8
Installation Guide The following picture shows the system mounted in a final example application without the tablet.
PAGE 9
Installation Guide 5. Antenna design The following picture shows the antenna design. The antenna is carried out on a 1mm PCB using traces of 200u width, the distance between the windings is 200u. As shown in various EMC tests, no intended radiation is used to transmit data. All information is transmitted using the principle of near field coupled coils utilizing a carrier frequency of 2MHz. The coil area used is 440 mm².
PAGE 10
Installation Guide 6. Regulatory Information FCC This device complies with Part 15 of FCC Rules, Operation is Subject to following two conditions: 1) This device may not cause harmful interference, and 2) This device must accept any interference received including Caution: Any changes or modifications to the equipment not expressly approved by the party responsible for compliance could void user’s authority to operate the equipment.
PAGE 11
Installation Guide 7. Integration Information for the OEM It is the responsibility of the OEM / Host product manufacturer to ensure continued compliance to FCC certification requirements once the module is integrated in to the Host product. Please refer to FCC KDB 996369 D04 for additional information. The module is subject to the following FCC rule parts: 15.205, 15.207, 15.209 and 15.
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Installation Guide 8. Host Product User Guide Text/FCC Compliance This device complies with Part 15 of FCC Rules, Operation is Subject to following two conditions: 1) This device may not cause harmful interference, and 2) (This device must accept any interference received including Caution: Any changes or modifications to the equipment not expressly approved by the party responsible for compliance could void user’s authority to operate the equipment.
PAGE 13
Installation Guide 9. Host Product Label The host product must be labelled with the following information: "Contains FCC ID: 2AOR81909004" “This device complies with Part 15 of FCC Rules, Operation is Subject to following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received including interference that cause undesired operation.
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Installation Guide Changes in Usage Conditions of the Module This device and its antenna(s) must not be co-located with any other transmitters except in accordance with FCC multi-transmitter product procedures. In accordance with FCC KDB 996369 D03, section 2.9, test mode configuration information is available from the Module manufacturer for the Host (OEM) product manufacturer.