Half-bridge

Half-bridge

This converter given in Fig: 5.3 is a sort of dc/dc converter like fly back and forward choppers, which can furnish an output voltage more or less compared to input voltage and provide electrical separation by means of a transformer. It is more composite than a fly back or forward types.

The HB chopper design will give large output energy and it will make use of unit that are lesser and reduced pricey. The HB Control chopper has been newly used as a small output voltage conversion as a result of its excellent features where there efficiency is more or less ninety percent at less output voltage. From this converter statics and dynamics characteristics can be achieved.

Where the dc voltage transfer proportion takes place in both discontinuous and continuous conduction form, where the margin among both modes & level of current in the transformer can also be achieved.

Advantages:

 • Magnetic cores are small

 • No gap of magnetic path.

• Less stray magnetic field

. Disadvantages:

• They are functioning at 1/2 the supply potential where the switching transistors are operational two times the collector current as in comparison with the basic push-pull scheme.

• It is not suitable for current mode control.