How to design a 14V 6A, DC Power Supply ?

[moodymaniac]

Power Supply Design

Dear Sir,

How to design a 14V 6A, DC Power Supply .

Regards,
Mudassar :?:

 

[pisoiu]

Re: Power Supply Design

Powered from mains I suppose.. Try TOPSwitch family from www.powerint.com . It is a good sollution, low component count, they have good design support and design software on their site. Not very expensive also.

/pisoiu

 

[goodboy_pl]

Re: Power Supply Design

what is your input specs?
if it is main power u can use power integration's topswitch or ST's Viper or other switchers from IRF, etc

also u can make it by UC384X and some discrete components.

BEST!

 

[yelloww_]

Re: Power Supply Design

Look at the new....FSDL0365 from Fairchild... (FDS family)..New generation of AC-DC..low cost...easy to work with.....

Great Solution...

 

[Ante]

Re: Power Supply Design

Mudassar,

What do you intend to use this 14V 6A for?
Must it be very stable? Ripple free? Continuous loaded at 6A?

Ante :roll:

 

[kenawy]

Re: Power Supply Design

Dear Sir,

How to design a 14V 6A, DC Power Supply .

Regards,
Mudassar :?:

your power supply may contain the following components :
larg transformer (as your input will 220 or 110 volts ) the output as you will find in the market (15 or 18 volts output) then you may need a 4- diodes high power and then use large electrolite capacitor for noise decoupling and then zener diode 14 volts with small value series resistor
noot your transformer must be high power (220X6 watts or 110X6 watts)
best regards

 

[jorgito]

Power Supply Design

Hello kenawy,
I think that a 12 Vac would a better value for such power supply. After the rectifier diodes and filtering you get the peak value of the transformer ac voltage (minus diode drops, resistive drops, etc).
Zener diodes are not the way to regulate a P.S. like this, because at no load the zener must take some 6 Amps@14 V .... some 84 W..... if you REALLY wants to use a zener, you should add a series pass transistor.
Finally, the transformer power is not 220x6 or 110x6 W. Power must be computed with input voltage and input current OR output voltage and output current. Some 84 W again, plus some losses, efficiency, etc. 100 to 120 W seems to be a safe value.
Please take a look to
APPLICATION NOTE AN253/1088 POWER SUPPLY DESIGN BASICS by P. ANTONIAZZI
1995 SGS-THOMSON Microelectronics
www.eetasia.com/ARTICLES/ 2000APR/2000APR15_AMD_PD_AN.PDF

Best regards.