A switching power supply circuit and airborne equipment

A technology of switching power supply circuit and voltage conversion circuit, which is applied in the direction of circuit device, emergency power supply arrangement, emergency protection circuit device, etc. It can solve the problems that the switching power supply circuit cannot continue to work normally, and the use of airborne equipment is limited, so as to achieve safety and reliability. High performance and wide application range

Active Publication Date: 2021-11-26
CHINA HANGFA SOUTH IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, the existing switching power supply circuit of airborne equipment usually only has the three-phase AC power supply of the PMA engine to increase the input, which makes it impossible for the switching power supply circuit of the airborne equipment to continue to operate when the three-phase AC power supply of the PMA engine is in an abnormal state. functioning normally, thereby limiting the use of on-board equipment

Method used

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  • A switching power supply circuit and airborne equipment
  • A switching power supply circuit and airborne equipment
  • A switching power supply circuit and airborne equipment

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Embodiment Construction

[0054] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0055] refer to figure 1 , which is a schematic structural diagram of a switching power supply circuit provided according to a preferred embodiment of the present invention. The switching power supply is mainly composed of an input stage circuit, a voltage conversion circuit and a control circuit. The input stage circuit is used to provide a DC input voltage for the voltage conversion circuit, and the voltage conversion circuit outputs a desired DC output voltage under the control of the control circuit, and the control circuit outputs the desired DC output voltage according to the output voltage of the voltage conversion circuit. output voltage to control conversion of the voltage conversion ...

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Abstract

The invention discloses a switching power supply circuit and airborne equipment. When the AC input power supply is in an abnormal working state through a backup power supply, an input DC voltage is provided to the switching power supply circuit, so that the switching power supply circuit can convert the input DC voltage into multiple DC voltages. The output voltage is used by the switching power supply circuit itself and the airborne equipment, and the switching power supply circuit is also provided with an undervoltage detection circuit to monitor the safety of the switching power supply circuit in real time, so the switching power supply circuit is used The range is wide, and the use of the airborne equipment applied thereto is not limited by the failure of normal use when the AC power supply is abnormal, and the safety and reliability are high.

Description

technical field [0001] The invention relates to the technical field of power supply circuits of airborne equipment, in particular, to a switching power supply circuit and airborne equipment. Background technique [0002] In recent years, the power supply of airborne equipment has gradually used DC / DC switching power supply with low power consumption and high efficiency. The airborne power supply has the characteristics of high reliability, stable operation, small ripple, and anti-conduction interference. Most of the power conversion modules are three-level, that is, +28V to ±15V and 5V, or +28V to ±12V and 10V, etc. Currently, as CMOS semiconductor processing gradually enters the nanoscale process, the number of gates of integrated circuits is increasing. The more, the lower the power consumption, and the development trend of multi-level power supply is obvious. Common low-voltage integrated circuit power supply voltages are 3.3V, 1.8V, 1.5V, 1.2V, 1.0V and 0.8V. [0003] I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J9/06H02M3/00H02M7/217H02M7/5395H02H7/12
CPCH02H7/1203H02J9/061H02M3/00H02M7/217H02M7/5395Y02B70/10Y02B70/30Y04S20/20
Inventor 白燕羽沈领张艳玲陈月安欧阳鹏谷新宇薛晓波叶子嘉杨旭任广华
Owner CHINA HANGFA SOUTH IND CO LTD
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