Switching power supply and electronic equipment

A technology of switching power supply and switching unit, which is applied to conversion equipment with intermediate conversion to AC, conversion equipment without intermediate conversion to AC, electrical components, etc., and can solve problems such as chip incompatibility

Pending Publication Date: 2022-04-29
QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] One of the purposes of the present invention is to provide a switching power supply, which is used to solve the problem of incompatibility of control chips under different power supply architectures, multiplex the chip power supply pins of the Buck chip, and form a Flyback without an optocoupler isolator based on the Buck chip The power supply architecture realizes the normalized design of the switching power supply and reduces the number of control chips used in the switching power supply

Method used

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  • Switching power supply and electronic equipment
  • Switching power supply and electronic equipment
  • Switching power supply and electronic equipment

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Embodiment Construction

[0059] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0060] Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. In describing the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than in...

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Abstract

The invention discloses a switching power supply and electronic equipment, the switching power supply comprises a Buck chip, and the Buck chip comprises a switching unit, a Buck chip, a first capacitor and a second capacitor; the driving module is configured to control the switch unit to be switched on/off periodically; the switching power supply further comprises a feedback power supply multiplexing pin which is connected with the driving module and provides electric energy for the Buck chip; the feedback power supply loop is powered by the output voltage of the output side of the switching power supply and comprises a voltage stabilizing diode, a current limiting resistor and a forward diode which are connected in series, the output side of the feedback power supply loop is connected with the feedback power supply multiplexing pin, and the ground of the output side of the switching power supply is connected with the grounding pin of the Buck chip. The method is used for solving the problem that control chips under different power supply architectures are not compatible, and the normalized design of the switching power supply is realized.

Description

technical field [0001] The invention relates to the technical field of switching power supplies, in particular to a switching power supply and electronic equipment. Background technique [0002] Switching power supply is a new type of regulated power supply circuit following the linear regulated power supply. The switching power supply stabilizes the output voltage by monitoring the output voltage in real time and dynamically controlling the turn-on and turn-off time ratio of the switch tube. Due to its high efficiency and easy miniaturization, switching power supplies have been widely used in most electronic products. [0003] The most commonly used topologies in switching power supplies are Buck power architecture and Flyback power architecture. [0004] Buck power architecture (also known as Buck converter or step-down chopper) is a DC-DC converter that can realize voltage reduction. The voltage at the output (load) terminal is lower than the voltage at the input (power ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/08H02M3/28H02M3/10
CPCH02M1/08H02M3/28H02M3/10
Inventor 陶淦张凯强何成军林文涛赵晓青
Owner QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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