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Mosfet switch tube isolation driving method applied to traveling wave tube program-controlled high-voltage power supply

A technology of MOS tube and high voltage power supply, which is applied in the field of MOSFET switch tube isolation drive to reduce the dead time of the switch, avoid shoot-through damage, and overcome the Miller effect.

Inactive Publication Date: 2016-03-09
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the high-voltage, high-power TWT program-controlled high-voltage power supply, the traditional pulse transformer isolation driving method cannot meet its requirements.

Method used

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  • Mosfet switch tube isolation driving method applied to traveling wave tube program-controlled high-voltage power supply
  • Mosfet switch tube isolation driving method applied to traveling wave tube program-controlled high-voltage power supply
  • Mosfet switch tube isolation driving method applied to traveling wave tube program-controlled high-voltage power supply

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Embodiment Construction

[0014] Such as figure 1 shown. figure 1 The working process of the schematic block diagram shown is as follows: After the driving signal passes through the damping and elimination circuit to eliminate the long-term oscillation, it is sent to the high-current buffer driving circuit for current expansion processing, and the transient driving current capacity is extended from milliampere level to ampere level; The damping and vibration elimination circuit is input to the primary of the isolation coupling transformer, which has the characteristics of high-voltage isolation and good coupling. The push-pull amplifier circuit and channel conversion isolation circuit with completely consistent device parameters, the push-pull amplifier circuit can avoid common conduction, and the channel conversion isolation circuit can avoid mutual interference between turn-on and turn-off; the driving signal has undergone the above-mentioned series of optimization processes Finally, they are sent t...

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Abstract

The invention discloses an isolation drive method of MOSFET switch tubes applied to a traveling wave tube program control high-voltage power supply. A pulse width modulating signal is sent to an extra-high voltage isolation pulse transformer to produce two groups of trigger pulse signals with the same amplitude, the same frequency and opposite phases after processed; and each group of the trigger signals drive an MOSFET power switch tube on a respective bridge arm to work after passing through a push-pull amplifier circuit and a transient suppression circuit respectively.

Description

technical field [0001] The invention relates to the technical field of MOSFET switch tube isolation drive, in particular to a MOSFET switch tube isolation drive method applied to a traveling wave tube program-controlled high-voltage power supply. Background technique [0002] Each power supply voltage of the TWT program-controlled high-voltage power supply is based on the cathode, and its main features are high control precision, large output power, and ground voltage up to tens of thousands of volts; the cathode voltage of the program-controlled high-voltage power supply of the present invention is as high as 16kV, and the collector pole is the largest Power 4kW. First of all, due to the high output voltage, it is necessary to perform ultra-high electrical isolation between the main power circuit and the control circuit. Secondly, the switch tube works in a high-frequency and high-power state, so the anti-interference ability of the drive circuit must be improved; in additi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/08
CPCY02B70/10
Inventor 王文廷李斌王群王俊汪定华
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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