Step down voltage from 36V to 12V for EV

A

Assurena

New Member

• Feb 12, 2013

• #1

Hello ,

i have to design a step down circuit from 36V/48V to 12V that compatible for Electric Vehicle.
Where my circuit need to charge the 12V battery.
I am using this circuit

I need an opinion how to control all the MOSFET.
After done the simulation, i have failed to get the right result.
Thank you.

 

crutschow

Well-Known Member

Most Helpful Member

• Feb 12, 2013

• #2

Where did you get that circuit? It looks rather complicated.

Why not just use PWM and a single switch to control the voltage to the motor?

 

A

Assurena

New Member

• Feb 12, 2013

• #3

I get it from the journal. As attached is where my project take part and how the circuit works.
I have to charge the 12V battery in Electric vehicle.



I have simulate the circuit and it failed.

 

ronv

Well-Known Member

Most Helpful Member

• Feb 13, 2013

• #4

What you want is a step down or buck regulator. They are often cheaper to buy than to build, but to know about that we would need to know what kind and size of battery and how fast you need to charge it.

 

F

fernando_g

New Member

• Feb 13, 2013

• #5

Texas Instruments, Fairchild, STMicro, OnSemi, Intersil and others have buck regulator circuits that will be able to do exactly what you need.

Do you want to ACTUALLY build the circuit or just perform a simulation?

The Texas Instrumnts site has a powerful simulator, called Webench

 

crutschow

Well-Known Member

Most Helpful Member

• Feb 13, 2013

• #6

I still don't see where you got that circuit.