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Switching power supply device and battery charger including the same

一种开关装置、开关电源的技术，应用在电路装置、运输和包装、电池电路装置等方向，能够解决系统破坏等问题，达到提高效率的效果

Inactive Publication Date: 2015-04-29
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such voltage spikes can lead to the destruction of the system

Method used

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  • Switching power supply device and battery charger including the same
  • Switching power supply device and battery charger including the same
  • Switching power supply device and battery charger including the same

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Embodiment Construction

[0026] The specific structure and function descriptions of the embodiments of the present invention disclosed herein are only for illustrative purposes of the embodiments of the present invention. The present invention can be implemented in many different forms without departing from the spirit and distinctive features of the present invention. Therefore, the embodiments of the present invention are disclosed for illustrative purposes only, and the embodiments of the present invention should not be construed as limiting the present invention.

[0027] Now referring to the various embodiments of the present invention in detail, specific examples thereof are shown in the drawings and described below, because the embodiments of the present invention can be modified in many different forms. Although the present invention will be described in conjunction with exemplary embodiments, it should be understood that this specification is not intended to limit the present invention to these ...

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PUM

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Abstract

A switching power supply device includes a full-bridge circuit comprising a plurality of switching devices, a transformer comprising a primary coil and a secondary coil, the primary coil being connected to an output of the full-bridge circuit, and a DC / DC converter comprising a rectifier circuit. The rectifier circuit includes a plurality of diodes and is connected to the secondary coil to rectify a voltage outputted from the secondary coil. A snubber circuit includes a first snubber diode connected to an intermediate point of the secondary coil, a second snubber diode connected in series with the first snubber diode, the second snubber diode being connected to one end of an output capacitor, and a snubber capacitor connected between a node between the first and second snubber diodes and a positive side output of the rectifier circuit.

Description

[0001] Cross references to related applications [0002] This application claims the priority of Korean Patent Application No. 10-2013-0120886 filed on October 10, 2013, the entire content of which is incorporated herein by reference for all purposes. Technical field [0003] The present disclosure generally relates to a switching power supply device and a battery charger including the switching power supply device, and more specifically, to a switching power supply device that can effectively reduce a rectifier voltage spike in a high-voltage output circuit and a battery charger including the switching power supply device. Background technique [0004] In a switching power supply device using a snubber capacitor, the leakage inductance part of the transformer can be interlocked with the parasitic capacitor of the diode rectifier device, resulting in resonance or voltage spikes. Such voltage spikes can cause damage to the system. [0005] The foregoing is only intended to help unders...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/34H02M3/315H02J7/10
CPCH02M1/34H02M1/346H02M3/33573H02J2207/20H02J7/02Y02B40/00Y02B70/10H02J7/04H02M7/06H02J7/00H02M3/33546
Inventor 李宇宁宋秉燮李垈雨梁珍荣金钟弼
Owner HYUNDAI MOTOR CO LTD
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