ringing choke converter

This refers to a self-oscillating frequency control type switching regulator. Since there is no oscillator, the DC-DC converter self-oscillates, and if there is an error, the duty cycle changes based on the error voltage to maintain a constant output voltage. Its advantage is cost reduction due to fewer components, while its disadvantage is that changes in input voltage or output power cause changes in the operating frequency. During the design stage, operating frequency becomes important. Increasing the frequency allows downsizing of coils and output filters and faster response, but also leads to disadvantages such as increased switching losses and reduced efficiency. Therefore, it is typically designed at the most common frequency when the input voltage is at its highest. It is widely used in small electrical and electronic devices with low power consumption.