High transformation ratio non-isolated DC/DC converter
A converter, non-isolated technology, applied in the direction of converting DC power input to DC power output, instruments, and adjusting electrical variables, etc., can solve the problem that non-isolated DC/DC converters cannot achieve high transformation ratios, and achieve circuit connection methods Flexibility, reduce power loss, and improve power density
Pending Publication Date: 2022-07-22
SOUTH CHINA UNIV OF TECH
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
A non-isolated DC / DC converter without a transformer cannot achieve a high transformation ratio, or a large number of switching tubes are required to form a high-level DC / DC converter to achieve a high transformation ratio
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0031] The present invention will be described in further detail below with reference to the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
[0032] This embodiment provides a high transformation ratio non-isolated DC / DC converter, which is an N-level converter composed of N-level transformation units, where N is an integer greater than or equal to 2, and the first-level transformation unit adopts For the first-type basic transformation unit, other transformation units except the first-level transformation unit adopt the first-type basic transformation unit or the second-type basic transformation unit.
[0033] like figure 1As shown, the first type of basic transformation unit includes: an input port, an output port, a first resonant cavity, a second resonant cavity, a first half-bridge circuit, a second half-bridge circuit, and a ground port. The first end of the first half-bridge circuit is electrically conne...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a high-transformation-ratio non-isolated DC / DC converter which is composed of N stages of conversion units larger than or equal to 2, the first-stage conversion unit adopts a first-class basic conversion unit, and the conversion units except the first-stage conversion unit adopt the first-class basic conversion unit or a second-class basic conversion unit. Each of the first type of basic conversion unit and the second type of basic conversion unit comprises an input port, an output port, a first resonant cavity, a second resonant cavity, a first half-bridge circuit and a second half-bridge circuit, and the second type of basic conversion unit further comprises a third half-bridge circuit. On the basis of not changing components, the DC / DC converter with different transformation ratios is obtained by changing a circuit connection mode; compared with an isolated DC / DC converter, the DC / DC converter has no transformer, reduces the electric energy loss, improves the efficiency, reduces the volume of the converter, and improves the power density; compared with an existing switch resonant cavity converter, the circuit connection mode is more flexible, the transformation ratio of input voltage and output voltage is increased, and the size and the number of used devices are reduced.
Description
technical field [0001] The invention relates to the technical field of DC / DC converters, in particular to a high transformation ratio non-isolated DC / DC converter. Background technique [0002] At present, the server power supply generally adopts a 48V intermediate bus architecture, which is derived from the power conversion on the server motherboard and has been voltage isolated. The existing technical solutions mostly use a two-stage voltage conversion structure, in which the voltage is first converted to 12V in the middle, and then the voltage is converted to the required low voltages such as 3.3V and 1.2V. To achieve the goal of achieving the target voltage with only one voltage conversion, an isolated DC / DC converter is required. The isolated DC / DC converter needs an additional transformer, which increases the volume and power loss of the system, reduces the efficiency and power density, and the front-end power supply has been isolated, so there is no need for isolatio...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/158
CPCH02M3/158
Inventor 杜贵平朱天生郑昊
Owner SOUTH CHINA UNIV OF TECH