Wireless Charging Transmitter-Fixed Frequency Regulator Architecture
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Wireless Charging Transmitter-Fixed Frequency Regulator Architecture
The fixed frequency voltage regulator is the standard program specified by Apple's official. Apple's proposal for 7.5W fast charging at the MFi conference uses a fixed frequency voltage regulator architecture. In the MP-A11 topology, the operating frequency is fixed at approximately 127 KHz, the duty cycle is constant at 50%, and the transmit power is controlled by adjusting the voltage. Wireless charging can minimize cell phone interference, since it effectively avoids frequency bands that interfere with cell phones. The Q value detection circuit is more sensitive with respect to FOD detection and meets the requirements of EPP. This program is certified by BPP + FOD Extensions and EPP. After the implementation of WPC Qi v1.2.4, the unified ownership is EPP certification.