Adjustable DC voltage generating circuit

A DC voltage and circuit generation technology, applied in battery circuit devices, circuit devices, regulating electrical variables, etc., can solve problems such as difficult to exceed, high circuit design complexity, and insufficient voltage magnification, to avoid switching losses, The effect of simplifying circuit complexity

Active Publication Date: 2019-06-18
RICHTEK TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Switching boost converters are widely used, but one of the disadvantages is that the voltage magnification is not large enough, and it is usually difficult to exceed ten times
Another disadvantage of the switching voltage conversion circuit is that it needs to use a more complicated control circuit to control the switching operation of the power switch, so the design complexity of the circuit is relatively high
Moreover, it is difficult for the switching voltage conversion circuit to avoid the switching loss (switching loss) caused by the switching operation of the power switch.

Method used

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  • Adjustable DC voltage generating circuit
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Embodiment Construction

[0040] Embodiments of the present invention will be described below in conjunction with related drawings. In the drawings, the same reference numerals represent the same or similar elements or method flows.

[0041] figure 1 It is a simplified functional block diagram of a tunable DC voltage generating circuit (tunable DC voltage generating circuit) 100 according to a first embodiment of the present invention. Such as figure 1 As shown, the adjustable DC voltage generating circuit 100 includes a resonance circuit (resonance circuit) 110, a rectifying circuit (rectifying circuit) 120, a current control unit (current control unit) 130, a voltage stabilizing capacitor (stable capacitor) 140, and a control circuit (control circuit) 150 .

[0042] The resonant circuit 110 includes an inductor 111 , an input capacitor 113 arranged in series, and an output node 115 between the inductor 111 and the input capacitor 113 . The resonance circuit 110 is used for receiving an input sign...

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Abstract

The present invention proposes an adjustable DC voltage generating circuit, including: a resonant circuit, including an inductor and an input capacitor arranged in series, for receiving an input signal, and an output node between the inductor and the input capacitor generating a resonance signal; a rectification circuit coupled to the output node for rectifying the resonance signal; a current control unit configured in series with the resonance circuit; a voltage stabilizing capacitor coupled to the output end of the rectification circuit , for providing a DC output signal whose voltage value is greater than the input signal; and a control circuit, coupled to the output end of the rectification circuit and the current control unit, for adjusting the current flowing through the control unit according to a setting signal The magnitude of the current to change the DC output signal. Since no power switch is used in the aforementioned adjustable DC voltage generating circuit, switching loss can be avoided, and the circuit complexity of the control circuit can be greatly simplified.

Description

technical field [0001] The invention relates to a voltage amplifying circuit, in particular to an adjustable DC voltage generating circuit with high voltage magnification. Background technique [0002] Switching boost converters are widely used, but one of the disadvantages is that the voltage magnification is not large enough, and it is usually difficult to exceed ten times. Another disadvantage of the switchable voltage conversion circuit is that it needs to use a more complex control circuit to control the switching operation of the power switch, so the design complexity of the circuit is relatively high. Furthermore, it is difficult for the switching voltage conversion circuit to avoid the switching loss caused by the switching operation of the power switch. Contents of the invention [0003] In view of this, how to provide more flexibility and greater voltage amplification with a more streamlined circuit structure is a problem to be solved in the industry. [0004] ...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H02M3/06H02J50/10H02J7/00
CPCH02J7/025H02M3/06G05F1/46H02M7/06H03H7/38Y02B70/10H02M1/0054H02M3/156H02M3/158H02M3/1588
Inventor刘国基魏维信
OwnerRICHTEK TECH