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Voltage control method, switching circuit, storage medium and computer program product

A computer program and switching circuit technology, applied in the fields of computer program products, voltage control methods, and switching circuits, can solve problems such as difficulty in implementation, difficulty in increasing the zero-voltage conduction of MOS tubes, and complex timing of MOS tubes, thereby reducing losses. Effect

Active Publication Date: 2021-06-11
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the timing of controlling the MOS tube through resonance is more complicated, and it is more difficult to realize, which increases the difficulty of zero-voltage conduction of the MOS tube in the BUCK circuit.

Method used

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  • Voltage control method, switching circuit, storage medium and computer program product
  • Voltage control method, switching circuit, storage medium and computer program product
  • Voltage control method, switching circuit, storage medium and computer program product

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Embodiment Construction

[0019] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0020] For the convenience of understanding, first introduce the BUCK circuit involved in the embodiment of the present application:

[0021] figure 1 It is a schematic diagram of a traditional BUCK circuit. refer to figure 1 , the BUCK circuit includes: a field effect semiconductor device (field effect transistor, FET) 1 (hereinafter referred to as HS), a field effect semiconductor device 2 (hereinafter referred to as LS), an inductor L 0 , capacitance C 1 , capacitance C 0 And the driving of the field effect semiconductor device 1 and the field effect semiconductor ...

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Abstract

The invention relates to a voltage control method, a switching circuit, a storage medium and a computer program product. The switching circuit comprises a first power tube, a second power tube, a control module and an active circuit module; and the control module is connected with the first power tube, the second power tube and the active circuit module, the active circuit module is connected with one end of the first power tube, and the first power tube is connected with the second power tube. The control module is used for sending a first signal to the active circuit module between two adjacent switching periods and indicating the active circuit module to input a preset voltage to one end of the first power tube, so that the difference value of the voltages at the two ends of the first power tube is smaller than a preset value. According to the switching circuit provided by the invention, the realization difficulty of zero-voltage conduction of the MOS transistor can be reduced, and the loss of the MOS transistor in the conduction process is effectively reduced.

Description

technical field [0001] The present application relates to the field of circuit technology, in particular to a voltage control method, a switch circuit, a storage medium and a computer program product. Background technique [0002] A step-down conversion circuit (also called a BUCK circuit) includes a metal oxide semiconductor (MOS) tube, which can control an input voltage, and the output voltage of the BUCK circuit is often lower than its input voltage. The BUCK circuit also includes an inductor and a capacitor for filtering and rectifying before outputting current. [0003] Before the MOS tube is turned on, there is often a large voltage difference between the two ends of the MOS tube, and due to the existence of the current in the BUCK circuit, the MOS tube will produce obvious losses during the conduction process of the MOS tube. At present, a resonant inductance (or capacitance) can be added on the basis of the traditional BUCK circuit, or the inductance (or capacitance...

Claims

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Application Information

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IPC IPC(8): H02M3/156H02M1/08
CPCH02M3/156H02M1/083Y02B70/10
Inventor 陈社彪
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD