Kangtai WL0125 Wireless Charging Transmitter User Manual
- June 9, 2024
- Kangtai
Table of Contents
WL0125 Wireless Charging Transmitter
User Manual
Product: Wireless Charging
Model No: WL0125
This specification defines the electrical, reliability, EMC and REL requirements of the wireless charging transmitter base. The wireless charging system is based on electromagnetic induction technology.
Working principle:
Wireless charging transmitter is a wireless charging solution based on
electromagnetic induction technology provided by CPS. It is compatible with
QI-BPP/Samsung Fast charging standard, with charging area up to 10mm*10mm and
output power of 15W supporting It is based on the QI (WPC 1.2.4) standard
using near-field electromagnetic coupling and the power carrier amplitude
modulation method to implement power transmission between the transmitting and
receiving units.
The receiving unit receives the power electromagnetic energy transmitted by
the transmitting unit and converts it into a DC current output to the power
consumption part, and the receiving unit determines whether the received power
requirement is met by detecting and calculating the received voltage and
current, and converting the requirements into signal modulation on the power
carrier, the transmitting unit returns the signal of the carrier amplitude
change to the communication digital signal to the main control chip of the
receiving unit, and the main control chip adjusts the output power according
to the received information until meet power requirements at the receiving
end.
After the wireless charger transmits part, in a short period of time, the main
control chip completes the communication between the self-test and the power
adapter, determines the power range that can be output, and then starts
sending the detection signal to the load: such as the detection signal and the
PIN information. The control chip sends a PIN control signal to the full
bridge power part ,converting it into the electromagnetic power carrier , and
if there is no load, it is sent intermittently.
When there is load, the load receives the power electromagnetic energy and
responds to the information according to the requirements of the QI standard.
The information is modulated on the power carrier by the receiving coil. The
modulation of the receiving end causes a slight amplitude change of the
voltage amplitude of the power carrier.
Specifications:
I nput voltage: 20~36V
Wireless Charging Output: 15W (Max.)
Static power: ≤0.25 W (Without Rx)
Charging area: 6 mm*6 mm
Charging height: 3-9 mm (Transmitting coil to Receiving coil)
Charging efficiency: ≥65%@15W output, 3mm distance
Use procedure:
- Power by DC 20V~36V
- Put the mobile phone or iPad right above the device
- The device is charging
- When the device is fully charged, the wireless charger remains in standby mode
FCC Label Compliance Statement:
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
- This device may not cause harmful interference
- This device must accept any interference received including interference that may cause undesired operation.
Any changes or modifications not expressly approved by the grantee of this
device could void the user’s authority to operate the equipment. Declaration
the Restriction of this Limited Module Approval:
According to FCC Part 15 Subpart C Section 15.212, the radio elements of the
modular transmitter must have their own shielding. However, due to there is no
shielding for this Module, this module is granted as a Limited Modular
Approval.
When this Module is installed into the end product, Class II Permissive Change
or a New FCC ID submission is required to ensure the full compliance of FCC
relevant requirements. When this Module is installed into the end product, the
device shall be used with a minimum separation distance of 10 cm between the
user or bystander and the device. The following information shall be included
in the product manual and label:
Contain FCC ID: 2A78H-WL0125 .
Under such configuration, the FCC radiation exposure limits set forth for an
opulation/uncontrolled environment can be satisfied.
Only FCC approved antenna can be used for the module integrated into host.
The module only use for Shandong Kangtai Industry Co., Ltd, not sale to the
third parties.