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Buck-Boost converter design

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comsian_87

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hi all.i really need some help about my Buck-Boost converter circuit...i am using Proteus to construct and simulate the circuit... so any one can give a circuit design for that buck-boost converter.....i would really be very thankful to you people if you could help me out....
 
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Prototyp_V1.0

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I will not email you, every help should be possible for others to read.

Another tip is to not provide your email address in clear text on any forum. Your email may be just another target for spam boots.

To be able to provide any help I really need to see your design. Also you haven't asked a concrete question on what you need help for. These must be provided - otherwise it's just a dead end.
 

comsian_87

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thanks for reply .... sir i just want a buck-boost converter design that could be implemented in proteus software.. and could be simulated.... because i really need this design for my project.... and i don't have any idea that how to simulate a buck-boost converter in proteus software.
 

comsian_87

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hi any one can help me how to get output voltage and inducter current graph in proteus software for the following schematics.

buck boost.jpg
 

jeet_asic

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I tried to understand this buck-boost circuit , searched lot. But didn't understood well , please provide some links :)
 

YAS_HASHI

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Hi. On your design, the gate driver is grounded to earth. The gate must be drivern on floating.
 

comsian_87

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Hi. On your design, the gate driver is grounded to earth. The gate must be drivern on floating.
hi,
thanks for reply.... but brother can u help me in this design a buck boost converter for input voltage of 12v,output voltage of -5v, frequency of 20khz and it should be designed in proteus.. i would really be thankful for that....
regards
 

YAS_HASHI

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Your Load is very low impedance. You should reduce 'L1'. 22.84uH is too large.

---------- Post added at 08:24 ---------- Previous post was at 07:28 ----------

Pse show us waveforms of current through L1 and voltage of the gate.
 

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