Adjustable DC voltage generation circuit
A DC voltage generation circuit technology, applied in battery circuit devices, circuit devices, adjusting electrical variables, etc., can solve problems such as difficult to exceed, high complexity of circuit design, difficult to avoid switching losses, etc., to avoid switching losses, Effect of Simplifying Circuit Complexity
Active Publication Date: 2017-08-11
RICHTEK TECH
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- Application Information
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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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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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The invention provides an adjustable DC voltage generation circuit comprising a resonance circuit which comprises an inductor and an input capacitor which are configured in series and is used for receiving an input signal and generating a resonance signal on an output node between the inductor and the input capacitor; a rectification circuit which is coupled with the output node and used for rectifying the resonance signal; a current control unit which is connected in series with the resonance circuit in configuration; a voltage stabilizing capacitor which is coupled with the output end of the rectification circuit and used for providing a DC output signal of which the voltage value is greater than that of the input signal; and a control circuit which is coupled with the output end of the rectification circuit and the current control unit and used for adjusting the size of the current flowing through the current control unit according to a preset signal so as to change the DC output signal. No power switch is used in the adjustable DC voltage generation circuit so that the 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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Patent Timeline
Login to View More 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