What is Forward Converter？
The single-tube forward converter is a simple-ended single-ended converter, which is essentially a Buck converter with an isolation transformer. The secondary side output terminal is connected with a freewheeling diode in addition to a diode in series. The characteristic is that when the switch tube is turned on, the energy is transmitted from the primary side to the secondary side; when the switch tube is turned off, the secondary side relies on the inductor to continue to flow. However, in both cases, the core is subjected to the same excitation direction. Therefore, a "reset" action must be taken to return the flux to the original position at the beginning of the cycle at the end of the cycle. The single-tube forward converter is suitable for low power, and the voltage of the switch tube is calculated according to 2Vi. Vi is the input voltage.