A high efficiency full-bridge converter

Abstract EN

A high efficiency full-bridge converter is implemented with a ZVS (zero voltage switching) full bridge converter developed by Intersex IC (integrated circuit), ISL 6754, in this paper.

For the comparisons purpose the data results from measuring the other one that implemented by IC UCC3895 converter is also presented.

Normally, the implementation of a ZVS full-bridge converter is mainly for supplying the power to telecommunication system operating in BS (base station) resources, file server machines, or / and industrial applications.

In addition, for a power supply system a Z0VS converter is mostly either applied in the rear stage controller to arrive at the null voltage switching or in the later stage to use as a control transistor to obtain the synchronization.

In the contribution a fact was validated by this implementation that the efficiency of over 96 % without unnecessary loss caused in the conversion procedure can be reached, as the IC ISL6754 is taken to serve as ZVS full-bridge converter and synchronization filter.

Moreover, this investigated and implemented converter can obtain over 96 % power efficiency in conversion procedure when compared with that of 90 % which were ever published by the conventional techniques.

Apart from, a L-C resonance circuit was developed and embedded into the popular PWM (pulse width modulation) power converter, which is referred as the soft-switching, so as to downsizing the volume of the IC which can totally reduce the power losses caused in the duration of a semi-conductor switching.