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A power tube drive control circuit suitable for solid-state power controller

A drive control circuit, solid-state power technology, applied in the field of electronics, can solve problems such as transient high current failure to start normally, poor capacitive load capability, and large parasitic parameter dependence, so as to avoid the failure to start problem and improve the load capacity. , Improve the effect of capacitive load capacity

Active Publication Date: 2018-04-27
BEIJING SATELLITE MFG FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to provide a power tube drive control circuit, which can solve the wrong switching action caused by the wrong power-on sequence, and solve the problem of the capacitive load of the existing solid-state power controller. Poor capability, high dependence on parasitic parameters, failure to start normally due to transient high current, etc.

Method used

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  • A power tube drive control circuit suitable for solid-state power controller
  • A power tube drive control circuit suitable for solid-state power controller
  • A power tube drive control circuit suitable for solid-state power controller

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Embodiment Construction

[0027] Specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] Such as figure 1 , figure 2 As shown, the present invention is suitable for a power tube drive control circuit of a solid-state power controller, including a turn-on and turn-off circuit, a drive protection circuit, a transient suppression circuit, a slow turn-on circuit, a current sampling circuit, a freewheeling diode D2 and a MOS tube M1, where the MOS tube M1 controls the power on or off of the load; the freewheeling diode D2 is connected in parallel at both ends of the load, when the MOS tube M1 is turned off, the load completes the freewheeling through the freewheeling diode D2; the on-off circuit receives the external The level control signal Control1, and according to the level control signal Control1 generates a high level or a low level and applies it to the gate terminal of the MOS transistor M1 to control the condu...

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Abstract

The invention discloses a power tube driving control circuit suitable for a solid-state power controller. The power tube driving control circuit comprises a switch-on / off circuit, a driving protection circuit, a transient suppression circuit, a slow switch-on circuit, a current sampling circuit, a freewheeling diode D2 and an MOS (Metal Oxide Semiconductor) transistor M1. Through adoption of the power tube driving control circuit, wrong switch-on / off actions of the MOS transistor M1 caused by a wrong power-on sequence can be avoided, and the problems of poor capacitive load capacity, high dependence on a parasitic parameter, failure in normal startup due to large transient current, and the like in an existing solid-state power controller are solved.

Description

technical field [0001] The invention belongs to the field of electronic technology and relates to a control circuit based on a MOS tube. Background technique [0002] The solid-state power controller adopts the power tube as the core control switch, which has been widely used in various fields, and has the advantages of no contact, no arc, no noise, fast response, small electromagnetic interference, long life and high reliability. In a solid-state power controller, its power tube works in a full duty cycle switching state. [0003] Because the traditional power tube control circuit works in the duty cycle adjustable mode, the control of the load current is realized by controlling the duty cycle, and the drive signal and power supply are guaranteed by strict power-on sequence, and the drive circuit does not need to consider large Current start-up protection and the sneak path problem of instantaneous micro-conduction of the power tube due to internal parasitic parameters of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K17/12H03K17/08
CPCH03K17/08H03K17/12
Inventor 李辉耀郭坤周新顺张柏林
Owner BEIJING SATELLITE MFG FACTORY
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