help needed.
i use the exact circuit (figure 10) in the manual of LM2576, but cant get the output of -12v the power supply is 24v with the max amp of 5amp, when it turns on the chip get hot and the power supply get overloade with a high amp of about 3.5amp.
is there any one can help on this? THanks.
This kind of circuit has a very high startup current, and if your power supply actually limits at 5A as opposed to that being the rated capacity it may not start reliably.
Best regards, Spehro Pefhany
-- "it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
did you make a mistake and not insulate the back side of the chip from the ground ? as you are using the ground here as the - output the back plane of the chip is usually connected to the ground also. so in turn, you are dead shorting the chip if this is what your doing.
-- Real Programmers Do things like this. http://webpages.charter.net/jamie_5
ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.