DC to DC Buck-Boost Converter

601

09:34:05

By varying the duty cycle of the mosfet we can increase or decrease the DC input voltage by a factor of -D/(1-D) (where D is the duty cycle) but with opposite polarity. In the example we have set the duty cycle at 33.3% so with 10V at the input we expect that after the transients settle out to have -5V at the output.

If you want to change the duty cycle just change the
width of all voltage pulse sources (5% is 50% duty cycle and 10% is 100% duty cycle).

published 11 years ago

ketan784

11 years ago

What about boost..

Zafeirakis

11 years ago

@ketan784 change the duty cycle at any value greater than 50%...btw you can calculate the duty cycle in order to produce any desirable negative voltage with the following expression D=(Vout/Vin)/((Vout/Vin)-1) just plug in the input voltage and the negative voltage that you want.

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