High-frequency pulse width modulation technology utilizes a specific type of power supply that sets it apart from conventional switching power supplies. Unlike others, this power supply must generate an AC voltage output with identical frequency and phase as the input. The output voltage waveforms it produces encompass various shapes such as quasi-square waves, trapezoidal waves, and even sine waves. In the market, uninterruptible power supplies (UPS) have been developed by removing the storage power and charger, transforming them into voltage regulators for switching AC regulated power supplies. These UPS devices exhibit excellent performance, possess robust control functions, and can easily be integrated with intelligent systems, making them highly promising as AC regulated power supplies. However, their complex circuitry and high cost have hindered their widespread adoption, resulting in a slower rate of promotion.
