As the technology of smartphones continues to evolve, wireless charging technology has gained wider application in the market. Wireless charging technology mainly uses electromagnetic technology to convert current into electromagnetic in the transmitter, and the mobile phone converts the electromagnetic into current through the built-in chip receiver to charge the mobile phone. Products related to wireless electromagnetic technology in various countries have more stringent control, the following to introduce you to the recent customers ask more wireless charging FCC certification. Detailed consultation: 15815572502
1. Regulatory requirements
Wireless chargers do not have corresponding regulatory requirements for the FCC in the North American market. For regulatory gaps, the FCC has issued KDB 680106 guidelines. KDB 680106 has developed specifications, test reference standards, RF Exposure test methods and certification processes specifically for QI wireless chargers.
Second, the test standard, detailed consultation: 15815572502
Different types of wireless chargers according to KDB 680106 requirements, the test regulations can refer to 47 CFR PART 15, 47CFR PART 18 or a common reference respectively, you can refer to the following table:
Third, RF test requirements
For common desktop wireless chargers, electromagnetic field strength probes need to be used at a distance of 15cm from the product (multi-coil synchronous emission, the top needs to be 20cm), at the top and four sides of the test. For the car wireless charger, it is necessary to test at a distance of 0cm, 2cm, 4cm, 6cm, 8cm, and 10cm.
The measured value cannot be greater than 50% of 614V/m and 50% of 1.63A/m.
A similar warning should be declared in the user manual: This equipment shouldbe installed and operated with minimum distance 20cm between the radiator andyour body.
Fourth, the certification form requirements
Authentication can be performed as per SDoC or Certification program. When a product meets the following requirements, it is possible to issue a report according to the SDoC procedure directly tested or tested by an FCC-authorized laboratory and submit a TCCB application for an FCC ID without consulting the FCC or following the PAG procedure.
· Charging operating frequency is lower than 1MHz;
· The charging output power of each coil is equal to or less than 15W;
· The wireless charging device only contains a single primary coil and a single secondary coil paired transmission, when there are multiple main coils and secondary coils transmitted, it is also a one-by-one paired transmission;
· The wireless charging receiver is placed directly on the transmitter for charging;
· Products that only meet the RF Exposure requirements of non-fixed products;
· When the measuring probe is 15 cm away from the wireless charging device, the measured value of the magnetic field strength is less than 50% of the MPE limit, and if the device contains a multi-coil synchronous emission, the top test distance is 20 cm;
· For in-vehicle wireless chargers, you need to submit a report from RF Exposure in advance to consult the FCC and follow the consultation guidelines.