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Boost-buck accelerating circuit

A technology of step-down circuit and step-up circuit, applied in the direction of electrical components, output power conversion devices, etc., can solve problems such as circuit application limitations, and achieve the effect of eliminating the driving voltage

Active Publication Date: 2013-07-10
JOHNSON ELECTRIC SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the anti-interference ability, an external power supply is often required, but this power supply may not be provided in practical applications, which limits the application of such circuits

Method used

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  • Boost-buck accelerating circuit
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Examples

Experimental program
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Embodiment Construction

[0017] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0018] see Figure 1a , the acceleration step-down circuit of the present invention comprises: input terminal A is used for receiving PWM signal, resistance R, first power tube T1, equivalent voltage source V, and output terminal B; Said resistance R is connected between input terminal A and output terminal between terminals B; the input terminal of the triode T1 is connected to the output terminal B, the control terminal of the triode T1 is connected to the negative terminal of the equivalent voltage source V, and the output terminal of the triode T1 is grounded; the equivalent voltage The positive terminal of the source V is connected to said input A.

[0019] see Figure 1b According to the first embodiment of the present invention, the input terminal A of the acceleration step-down circuit is connected to the PWM signal generator, the output terminal B i...

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PUM

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Abstract

The invention relates to a boost-buck accelerating circuit, which comprises an input end used for receiving PWM signals, a resistor, a dynatron, an equivalent voltage source and an output end, wherein the resistor is connected with the input end and the output end; the input end of the dynatron is connected to the output end of the circuit, the control end of the dynatron is connected to one end of the equivalent voltage source, and the output end of the dynatron is grounded; and the other end of the equivalent voltage source is connected to the input end. By using the amplifying function of the dynatron, the boost-buck accelerating circuit unilaterally accelerates the voltage at the output end of the circuit, and the application of the equivalent voltage source can eliminate the driving voltage brought by the conduction of a base of the dynatron.

Description

technical field [0001] The invention relates to an accelerating buck-boost circuit. Background technique [0002] Existing drive amplifiers for power tubes often use dedicated chips or push-pull circuits, and the cost of such applications is relatively high. In order to improve the anti-interference ability, an external power supply is often required, but this power supply may not be provided in practical applications, which limits the application of such circuits. [0003] Therefore, it is necessary to develop an accelerated buck-boost circuit with a wide range of applications. Contents of the invention [0004] The technical solution adopted by the present invention to solve the existing technical problems is to provide an accelerated step-down circuit, the circuit includes an input end for receiving a PWM signal, a resistor, a first power tube, an equivalent voltage source, and an output end The resistor is connected between the input terminal and the output terminal;...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/08
Inventor 吴建群蒋海波孙持平
Owner JOHNSON ELECTRIC SHENZHEN