Positive-negative voltage conversion circuit

Positive-negative voltage conversion circuit

  • CN 1,925,290 A
  • Filed: 09/02/2005
  • Published: 03/07/2007
  • Est. Priority Date: 09/02/2005
  • Status: Active Grant
First Claim
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1. , a kind of positive-negative voltage conversion circuit comprises, a slice adjusting and voltage-reduction switch mode adjustment device (D1), first electrochemical capacitor (C1), diode (VD1), output energy storage inductor (L1), second electrochemical capacitor (C2), high-frequency filter capacitor (C4), feedback resistive network (R1) and (R2)It is characterized in that, also comprise:

  • output inductor (L2), the 3rd electrochemical capacitor (C3);

    The pin of described adjusting and voltage-reduction switch mode adjustment device comprises;

    input voltage anode, voltage output end, input voltage negative terminal, output voltage feedback end, output voltage control end;

    The input voltage anode of the positive termination adjusting and voltage-reduction switch mode adjustment device (D1) of input voltage and the anode of first electrochemical capacitor (C1), the negative terminal of first electrochemical capacitor (C1) is connected with the input voltage negative terminal, the voltage output end of adjusting and voltage-reduction switch mode adjustment device D1 connects the negative electrode of diode (VD1) and an end of output energy storage inductor (L1), another termination input voltage negative terminal of output energy storage inductor (L1), the input voltage negative terminal of adjusting and voltage-reduction switch mode adjustment device (D1), the output voltage control end of adjusting and voltage-reduction switch mode adjustment device (D1), the positive pole of diode (VD1), one end of the negative pole of second electrochemical capacitor (C2) and output inductor (L2) interconnects, the other end of output inductor links the 3rd electrochemical capacitor (C3) negative pole, one end of one end of high-frequency filter capacitor (C4) and resistance (R2), one end of the other end connecting resistance (R1) of resistance (R2) and the output voltage feedback end of adjusting and voltage-reduction switch mode adjustment device (D1), the positive pole of the other end of resistance (R1) and second electrochemical capacitor (C2), another termination input voltage negative terminal of the positive pole of the 3rd electrochemical capacitor (C3) and high-frequency filter capacitor (C4).

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