Ringing choke converter

Refers to a self-oscillating frequency-controlled switching regulator. It does not have an oscillator, and the DC-DC converter performs self-excited oscillation. If there is any error, the duty ratio changes based on the error voltage to maintain a constant output voltage. While it has the advantage of lower cost due to fewer components, it has the disadvantage that the operating frequency varies with changes in input voltage or output power. During the design phase, operating frequency is crucial. Increasing the frequency allows for smaller coils and output filters and faster response, but also leads to increased switching losses and reduced efficiency. Therefore, it is typically designed for the frequency that is most common when the input voltage is at its maximum. It is widely used in compact electrical and electronic devices with low power consumption.