Voltage conversion circuit and power system
A voltage conversion circuit and voltage conversion technology, applied in the direction of regulating electrical variables, control/regulating systems, high-efficiency power electronic conversion, etc., can solve problems such as reducing circuit flexibility, and achieve the effect of improving circuit flexibility
Active Publication Date: 2021-05-18
HUAWEI DIGITAL POWER TECH CO LTD
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Problems solved by technology
If the output voltage value needs to be changed, it can only be realized by adding or reducing the switching tube, which reduces the flexibility of the circuit
Method used
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[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0028] References herein to "first", "second" and similar words do not imply any order, quantity or importance
[0029] nature, but only to distinguish different components. Likewise, words like "a" or "one" do not denote a limitation in number, but indicate that there is at least one. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
[0030] The "unit...
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An embodiment of the present application provides a voltage conversion circuit and a power supply system. The voltage conversion circuit includes: a resonant capacitance conversion unit, a voltage conversion unit, and n capacitor units; the n capacitor units include a first capacitor unit, a second capacitor unit and The third capacitor unit; the resonant capacitor conversion unit includes a first output terminal, a second output terminal and a third output terminal, and the voltage conversion unit and the first capacitor unit are respectively connected between the first output terminal and the second output terminal; the second The capacitor unit is connected between the second output terminal and the third output terminal; the voltage conversion unit includes a fourth output terminal and a fifth output terminal, and the third capacitor unit is connected between the fourth output terminal and the fifth output terminal; wherein, n is an integer greater than 2. The voltage conversion circuit provided by the present application can realize continuous adjustment of the output voltage of the voltage conversion circuit within a certain range of values by using fewer components. At the same time, the voltage conversion circuit provided by the present application has relatively high output current and low power dissipation.
Description
technical field [0001] The embodiments of the present application relate to electronic circuit technology, and in particular to a voltage conversion circuit and a power supply system. Background technique [0002] With the development of artificial intelligence technology, artificial intelligence chips have also emerged as the times require. In order to meet various needs in the field of artificial intelligence technology, artificial intelligence chips with various functions are gradually increasing. Existing artificial intelligence chips usually require low voltage (such as 0.7V voltage) for power supply. In the existing communication system, the unified power supply standard adopted is 48V. This requires converting the existing 48V voltage into a low voltage to drive the artificial intelligence chip to work. At the same time, the current driving the artificial intelligence chip is usually relatively high (for example, 700A). This requires the converted voltage to be ad...
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IPC IPC(8): H02M3/158
CPCH02M3/1584H02M1/0048Y02B70/10
Inventor 谌海涛胡志祥张兴中
Owner HUAWEI DIGITAL POWER TECH CO LTD