Design of a Driver for Thyristors Using a New Extra Flat Planar Transformer Without Magnetic Circuit

The control of power thyristors requires in most applications, insulation between the control reference and the gate cathode of the controlled thyristors. For this purpose, impulses tran, formers are used with magnetic circuits whose operation in high frequency allows reducing their weights and volume. In this paper, we propose to eliminate the magnetic circuit and to use the PCB (Printed Circuit Board) as a support of the primary and secondary impressions of the transformer operating at a frequency ranging between 1 and 2 MHz for the thyristors control. This approach allows the volume and weight reduction by a factor more than 20. An experimental procedure was used for the evaluation of the internal transformer parameters. The designed insulating thyristor driver was tested mid validated,for an induction heating application. Note that, this work can be present a good energy transfer capability for very low power applications (a few watts), like insulated power supply, insulated data transmission, insulated data transmission in contactless electrical energy transfer insulated sensors, the communications between parts moving distant of the order of the mm....