Voltage converter control circuits and methods

Abstract

Voltage converter control circuits and methods. In some embodiments, a voltage converter can include a voltage conversion circuit having an inductor configured to be charged and discharged to facilitate conversion of an input voltage to an output voltage. The voltage conversion circuit can further include a switch configured to allow the inductor to be charged and discharged. The voltage converter can further include a logic drive unit configured to provide a drive signal to the switch to control the charging and discharging of the inductor. The voltage converter can further include a mode control unit configured to provide a mode-switching signal to the logic drive unit to control switching between a continuous control mode and a discontinuous control mode based on an inductance current associated with the inductor and a constant load-current threshold.

What is claimed is: 
     
         1 . A voltage converter comprising:
 a voltage conversion circuit including an inductor configured to be charged and discharged to facilitate conversion of an input voltage to an output voltage, the voltage conversion circuit further including a switch configured to allow the inductor to be charged and discharged;   a logic drive unit configured to provide a drive signal to the switch to control the charging and discharging of the inductor; and   a mode control unit configured to provide a mode-switching signal to the logic drive unit to control switching between a continuous control mode and a discontinuous control mode based on an inductance current associated with the inductor and a load-current threshold.