| Author |
Message |
CaPsLoCkE
Joined: 14 Jan 2008
Posts: 6
|
 05 Nov 2008 9:21 Boost regulator circuit that can output 30V |
|
|
|
|
Hello,
I currently making a design of a boost regulator drive that can output 30V with an input voltage of 3.0V to 4.5V, however, I can't find a controller that is capable of doing this.
Here are the specs:
Output voltage: 27V-33V
Output current: 0.2A to 0.4A
Input voltage: 3.0V to 4.5V (input current can be adjusted to meet the desired output current)
Switching frequency: 250kHz to 600kHz
Efficiency: 75% to 85%
I hope to hear from you guys.
Thanks in advance.
Best regards,
Caps
|
|
| Back to top |
|
 |
hutxgf2003
Joined: 08 Oct 2008
Posts: 2
|
05 Nov 2008 11:28 Boost regulator circuit that can output 30V |
|
|
|
|
| me too
|
|
| Back to top |
|
|
FvM
Joined: 22 Jan 2008
Posts: 5154
Helped: 766
Location: Bochum, Germany
|
05 Nov 2008 12:50 Boost regulator circuit that can output 30V |
|
|
|
|
| If you ask Nationals Webench tool, it suggests LM3478 or LM3488. They comply to your requirements, I think.
|
|
| Back to top |
|
|
eem2am
Joined: 22 Jun 2008
Posts: 753
Helped: 13
|
06 Nov 2008 19:46 Re: Boost regulator circuit that can output 30V |
|
|
|
|
that is very low volt input.....do you have any auxiliary supply available of higher voltage for driving your mosfet with?
perhaps you need use a charge pump ic on that input to bump it up a bit for the controller's sake.....at least just to get it started off...then iot can use its own output voltage to power itself
|
|
| Back to top |
|
|
CaPsLoCkE
Joined: 14 Jan 2008
Posts: 6
|
17 Nov 2008 9:57 Re: Boost regulator circuit that can output 30V |
|
|
|
|
| eem2am wrote: |
that is very low volt input.....do you have any auxiliary supply available of higher voltage for driving your mosfet with?
perhaps you need use a charge pump ic on that input to bump it up a bit for the controller's sake.....at least just to get it started off...then iot can use its own output voltage to power itself |
How about using the component MC33063A (1.5A Peak Boost, Buck, Inverting switching regs from TI.
The data sheet reflects that it can accept +3V input. However, the examples only uses +12V.
|
|
| Back to top |
|
|
Google
AdSense
|
17 Nov 2008 9:57 Ads |
|
|
|
|
|
|
| Back to top |
|
|
eem2am
Joined: 22 Jun 2008
Posts: 753
Helped: 13
|
17 Nov 2008 19:31 Boost regulator circuit that can output 30V |
|
|
|
|
hello,
i'll have a look at that controller....also, beware the right half plane zero with such a big input to output ratio.
the boost is famous for it.
|
|
| Back to top |
|
|
