BUCK driving circuit

A driving circuit and driving tube technology, which is applied in the direction of electrical components, adjusting electrical variables, instruments, etc., can solve the problem of high price and achieve the effect of low cost

Inactive Publication Date: 2007-07-11
ASTEC POWER SUPPLY (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology uses three components: an AC power supply (AC) that generates alternating current for use by other devices; two transistors called MOSFETs with different characteristics - one being more resistive than another type-of semiconductor material. These elements are arranged together into circuits like this configuration where they work together to control how much electricity flows through them. To achieve these technical results, there needs to have both higher voltages at lower levels compared to traditional methods such as inductance transformers.

Problems solved by technology

This patented describes how switchable power sources like AC/DC converters have become more popular over time due their lower cost compared to traditional linear regulators used at home or abroad. However, there has been an issue where these types of devices can be affected by external factors such as noise interference from other electronic equipment that may affect its performance.

Method used

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Embodiment Construction

[0021] A specific embodiment of the present invention is shown in FIG. 1 , wherein the first driving transistor Q1 , the second driving transistor Q2 and their peripheral circuits form a rectifier charging circuit 1 . The third drive tube Q3 and its peripheral circuits form the rectifier tube discharge circuit 2 . The drain of the rectifier MOS transistor Q4 is connected to the input voltage terminal VIN, the gate is connected to the emitter of the third driving transistor Q3 through the sixth resistor R6, the source is connected to the second node B, and the second node B is connected to the second node B through the second capacitor C2. The emitters of the two driving transistors Q2 are connected to each other, and are connected to the collector of the third driving transistor Q3 through the fourth diode D4. Wherein, the anode of the fourth diode is connected to the collector of the third driving transistor Q3, and the cathode is connected to the second node B. The second node

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Abstract

This invention discloses one BUCK drive circuit, which comprises the following parts: commuter tube to output switch power voltage from input end to voltage output end; commuter charge circuit to charge the commuter tube in control of PWM switch signals to make the BUCK drive circuit in commuter work status; the commuter discharge circuit is to make the drive circuit at back flow work status in discharge in control of PWM switch signals.

Description

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Claims

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Application Information

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Owner ASTEC POWER SUPPLY (SHENZHEN) CO LTD
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