Switch driving circuit

Switch driving circuit

  • CN 101,102,086 A
  • Filed: 08/24/2007
  • Published: 01/09/2008
  • Est. Priority Date: 03/23/2007
  • Status: Active Grant
First Claim
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1. , a kind of switch driving circuit, it is used for the full-bridge type commutation circuit, it is characterized in that, and this switch driving circuit comprises:

  • One input circuit receives an input signal;

    One division circuit couples this input circuit, produces a division signal according to this input signal;

    One first delay circuit couples this input circuit, produces according to the activation of this input signal to postpone signal one first of one first time of delay of tool;

    One second delay circuit couples this input circuit, produces according to the forbidden energy of this input signal to postpone signal one second of one second time of delay of tool;

    AndOne switches signal generator, couple this input circuit, this division circuit, this first delay circuit and this second delay circuit, produce one first according to this input signal, this first delay signal, this second delay signal and this division signal and switch signal, one second switching signal, one the 3rd switching signal and one the 4th switching signal;

    Wherein, the pulse bandwidth of this first switching signal and the 3rd switching signal and the pulse bandwidth of this input signal are proportional, during this division signal activation, in case this input signal activation, this first switch signal can activation after this first time of delay, and the 4th switch signal according to the activation of this input signal forbidden energy, in case this first switches signal forbidden energy, the 4th switches signal can activation after this second time of delay;

    During this division signal forbidden energy, in case this input signal activation, the 3rd switches signal can activation after this first time of delay, and this second switching signal is forbidden energy according to the activation of this input signal, in case the 3rd switches the signal forbidden energy, this second switching signal can activation after this second time of delay.

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