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A power supply for a cascaded bus

A supply and power supply technology, applied in the modification of power electronics, instruments, electrical components, etc., can solve the problems of shortening the service life of fans, inconvenient troubleshooting, etc., to achieve the effect of prolonging life, facilitating troubleshooting, and improving reliability

Pending Publication Date: 2018-12-18
大山科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the single switching power supply in the existing high-power distributed power supply does not have a fault alarm function, and it is extremely inconvenient to troubleshoot after it fails; moreover, the fan of each switching power supply cannot be started or stopped according to changes in the ambient temperature. Speed ​​regulation, greatly shortening the service life of the fan

Method used

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  • A power supply for a cascaded bus
  • A power supply for a cascaded bus
  • A power supply for a cascaded bus

Examples

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Embodiment 1

[0029] Such as Figure 1-7 As shown, this embodiment provides a cascaded bus power supply, including: a rectification filter circuit that filters and rectifies the AC power into a parabolic wave voltage; performs power factor correction on the parabolic voltage output from the rectification filter circuit to obtain a DC voltage power factor correction circuit; and a resonant DC / DC isolation conversion circuit that performs DC / DC isolation conversion on the DC voltage output by the power factor correction circuit; The wave voltage is processed into a 390V DC voltage; the resonant DC / DC isolation conversion circuit processes the 390V DC voltage into a 36V bus voltage. Preferably, as figure 1 As shown, the supplier in this embodiment further includes a surge current suppression circuit and a differential mode filter circuit sequentially connected between the rectification filter circuit and the power factor correction circuit.

[0030] In this embodiment, the controller also incl...

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PUM

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Abstract

The invention belongs to the technical field of switching power supply and discloses a supply device of cascaded bus power supply, which comprises a rectifying filter circuit, a power factor correction circuit and a resonant DC / DC isolation conversion circuit. The supply device comprises a rectifying filter circuit, a power factor correction circuit and a resonant DC / DC isolation conversion circuit. It also includes fan control circuit and active alarm circuit. The fan control circuit includes a DC power supply for supplying power to the fan, a first transistor for controlling the current magnitude of the DC power supply to the fan, and a base current control circuit for controlling the current magnitude of the base of the first transistor according to the ambient temperature. The active alarm circuit comprises an alarm, a switch for controlling the alarm to be disconnected or connected from the DC power supply, and a switch control circuit for controlling the switch to be opened or closed according to the PWM signal of the resonant DC / DC isolation conversion circuit. The invention makes the fan start and stop and the speed change according to the ambient temperature, thereby prolonging the service life of the fan. In the event of failure of the supply, it can be quickly located, which greatly facilitates troubleshooting.

Description

technical field [0001] The invention belongs to the technical field of switching power supplies, and in particular relates to a cascaded bus power supply. Background technique [0002] Power supply is an important part of various electronic equipment, it is like the heart of the human body, providing power for the normal operation of all electrical equipment. With the rapid development of various electronic equipment and electrical appliances, there is a great demand for high-quality power supplies with high efficiency and stable performance. The switching power supply is widely used in almost all electronic equipment due to its small size, light weight and high efficiency. It is an indispensable power supply method for the rapid development of today's electronic information industry. However, in power systems such as space stations, base stations, and computer servers that require high-power, high-precision uninterrupted power supply, a single switching power supply can no...

Claims

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Application Information

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IPC IPC(8): H02M1/42H02M1/32H02H5/04H05K7/20H02M3/335
CPCH02H5/042H02M1/32H02M1/4241H02M3/33523H02M3/33576H05K7/20909Y02B70/10
Inventor 李太平
Owner 大山科技有限公司
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