DC/DC Converter Application Note
Diode Rectifier and Synchronous Rectifier
Ricoh’s step-down DC/DC converters use diode rectifier and synchronous rectifier. The diode rectifier type uses a schottky diode and the synchronous rectifier type uses a MOS transistor in the low-side switches. The high-side and low-side MOS transistors are built in most of the Rich’s DC/DC converters except for the R1242S, which uses synchronous rectifier and an external low-side MOS transistor.