9 Threads found on edaboard.com: l4970
Loot at and search "l4970". I use its to create a very good switching power supply up to 10A
I have to make 12V ~ 10A power supply, but I have no idea how to do that.
Any idea are welcome.
Hobby Circuits and Small Projects Problems :: 24.01.2003 10:07 :: rampo :: Replies: 8 :: Views: 8234
I don't think you can just add an external MOSFET to boost the output current of these switching voltage regulators ..
This "modification" will require more than that ..
If you need 10A output current much better alternative is to go for a 10A regulator (l4970 , for example) ..
Analog Circuit Design :: 21.06.2006 22:37 :: IanP :: Replies: 1 :: Views: 1138
I have a 48V Input Circuit.But I have found something simpler.I'll give it as a Image.Its really good based on a
Analog Circuit Design :: 14.11.2008 09:59 :: maheshkuruganti :: Replies: 5 :: Views: 5415
At 8.5A from LM317, impossible. At this power level, I wouldn't even think of going linear. I'd choose switching. Check out l4970 from ST. Amazing chip, man! The price is a tad high though.
Power Electronics :: 11.01.2010 13:17 :: Tahmid :: Replies: 9 :: Views: 2045
Like you said, there are many possible options. To have something between an efficient design and simplicity at reasonable current outputs, I would say you could use a step down transformer and use a switching regulator. For switching regulator, check L4971, L4964, l4970, L496x, L497x. Transformer should be easy to acquire.
The easiest solution
Power Electronics :: 19.12.2010 09:31 :: Tahmid :: Replies: 2 :: Views: 809
Take a look at these chips if you need more current:
l4970 - 10A
L4971 - 5A
L4972 - 2A
L4973 - 3.5A
L4975 - 5A
Hobby Circuits and Small Projects Problems :: 22.06.2012 11:17 :: Tahmid :: Replies: 14 :: Views: 1661
Where does this "-48V" come from? Is there a "paired" +48V? If there's no "accompanying" positive voltage, it doesn't matter that it's "-48V". Treat it as just (+)48V. Just take care with polarity (direction).
Then, use a buck converter circuit. How much current do you need? You can use one of many available switching regulators, such as L4971, L4
Power Electronics :: 13.09.2012 10:40 :: Tahmid :: Replies: 2 :: Views: 375
Use a switching regulator such as L4975A (5A) or L4977A (7A) or l4970A (10A), to minimize losses and maximize efficiency.
Electronic Elementary Questions :: 15.11.2012 03:42 :: Tahmid :: Replies: 10 :: Views: 1392
At this current and power level, you should look to use a switching regulator. These usually work as buck converters. You can choose a specialized buck controller and use it as the main controller in your converter. You may use general purpose PWM controllers like SG3525 or UC3842. You may even use a readily available (but rather expensive) regulat
Power Electronics :: 05.02.2013 11:32 :: Tahmid :: Replies: 5 :: Views: 457