Ultra low quiescent consumption isolated PFM power supplies under no-load condition

Abstract

The present paper focuses on low current consumption isolated DC-DC power supplies under no-load condition for electronic devices. It is specially devoted to battery powered electronic devices and communication system devices with discontinuous transmission.

As a result of previous work where power supplies, with high efficiency and low current consumption under no-load conditions, were studied and analyzed, we present here a practical design that reaches the technology limits of the isolated power supplies under no-load condition. The design has been implemented on a commercial control device. It has three communication modules and it is intended for remote control of electromechanical actuators and electronic sensors in harsh environment applications.