Transformer isolation driving method with adjustable space width range and duty ratio

Abstract

The invention relates to a transformer isolation driving method with an adjustable space width range and duty ratio. A first-way transformer isolation circuit and a second-way transformer isolation circuit connected with each other are adopted to output drive signals with a 0% to 100% duty ratio; each transformer isolation circuit comprises a totem-pole circuit for enhancing the drive capability of input drive signals; a pulse transformer connected with an output end of the totem-pole circuit through a circuit, and is used for performing signal isolation on the drive signals with enhanced drive capability; output ends of the pulse transformers of two ways of transformer isolation circuits are connected with a first resistor in series respectively through a first triode, and the output endsof the pulse transformers of two ways of transformer isolation circuits are further connected to a grid electrode and a source electrode of a switching tube MOSFET respectively. According to the transformer isolation driving method with the adjustable space width range and duty ratio provided by the invention, two ways of transformer isolation circuits are adopted, so that the drive signals withthe 0% to 100% duty ratio can be output; and the transformer isolation driving method has high integration level and meets the requirements of the space exploration field.

Description

technical field [0001] The invention relates to a transformer isolation driving method, in particular to a transformer isolation drive structure with adjustable duty ratio in a wide spatial range, which can realize a duty ratio varying from 0% to 100% in a wide range through a transformer, and belongs to the field of aerospace technology. Background technique [0002] Space exploration is the frontier field of scientific and technological development in the world today, and it is highly fundamental, forward-looking, innovative and driving. Due to the particularity of the space field, when the isolation device is used to drive the switch tube, the optocoupler isolation device commonly used in the ground field cannot be used. At this time, a pulse transformer isolation structure is generally required to drive the switch tube. However, due to the need for magnetic reset of the transformer, the maximum duty cycle can only reach about 90% in general, while some applications in th...

AI Technical Summary

Problems solved by technology

However, due to the need for magnetic reset of the transformer, the maximum duty cycle can only reach about 90% under normal circumstances, while some applications in the space field require an isolated drive structure with a wide range of variable duty cycles from 0% to 100%.

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