# What's the function of SG3524 IC in an inverter circuit?

1. ## What's the function of SG3524 IC in an inverter circuit?

hi every one..
i found this IC...SG3524... on my inverter..which i bought from the market..
i have read the datasheet but could not find the reason behind this IC to be used in inverter.circuit ...my inverter is 50watt...
anyone please can you explain how this IC works..
every help will be appreciated

2. ## Re: SMPS control circuit

I'd think the TI dataSheet explains it rather well, incl. appropriate application info.

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3. ## Re: SMPS control circuit

Hi,
Well, this is a PWM chip. For understanding PWM:
So You Want to Use PWM, Eh? | Non-Lexical Vocables ---------> I recommend this
Pulse Width Modulation
Introduction to Pulse Width Modulation (PWM) | Netrino

Okay then, first get your head straight with PWM and how it works and then go through the datasheet:

If then you still don't understand, you'll find many here to help you.

Take this as reference:

Hope this helps.
Tahmid.

2 members found this post helpful.

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4. ## Re: SMPS control circuit

Mr Tahmid,i want get 100 khz frekuensi using sg 3524,so we using the formula,but when i make it on pcb and i test and measure with osciloscope,i dont get the frekuensi that i expected

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6. ## Re: SMPS control circuit

The 3524 has unity gain bandwidth 3MHz and the transition times ON+OFF are 0.3usecs .As such you cannot expect to go beyond 33KHZ as you shall need a min gain of 100 for your drives.
The supply is 12VDC max. and the pushpull drives at transformer give saturation drops of approx.1VDC for the swing.As such ferrite winding ratio Pri::sec is 1:10 for getting 220VAC
However , the 3stage Darlington drive pushpull stages can be bettered by using Low Rdon MOSFET like STW80N06 which is 60V/80Amp /Rdson =0.01 ohm.

7. ## Re: SMPS control circuit

Originally Posted by Tahmid
Hi,
Well, this is a PWM chip. For understanding PWM:
So You Want to Use PWM, Eh? | Non-Lexical Vocables ---------> I recommend this
Pulse Width Modulation
Introduction to Pulse Width Modulation (PWM) | Netrino

Okay then, first get your head straight with PWM and how it works and then go through the datasheet:

If then you still don't understand, you'll find many here to help you.

Take this as reference:

Hope this helps.
Tahmid.
can u help me out with d pbc layer of dis schematic

---------- Post added at 17:16 ---------- Previous post was at 17:14 ----------

Originally Posted by Tahmid
Hi,
Well, this is a PWM chip. For understanding PWM:
So You Want to Use PWM, Eh? | Non-Lexical Vocables ---------> I recommend this
Pulse Width Modulation
Introduction to Pulse Width Modulation (PWM) | Netrino

Okay then, first get your head straight with PWM and how it works and then go through the datasheet:

If then you still don't understand, you'll find many here to help you.

Take this as reference:

Hope this helps.
Tahmid.
can u help me out with d pbc layer of dis schematic

8. ## Re: What's the function of SG3524 IC in an inverter circuit?

mr tahmid i have built this circuit of pwm invertor which you have posted i have problem that it is not oscillatin i only get voltage at only one output some time i get on pin14 and pin 11 has no voltage and if i turn off i get voltage at pin 11 and no signal at pin 14 please help what to do

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9. ## Re: What's the function of SG3524 IC in an inverter circuit?

can we obtain variable frequencies using SG3254??

10. ## Re: What's the function of SG3524 IC in an inverter circuit?

good morning every one,please,mr tahmid i am a child in sg3524,i followed ur blogs on this but not been able to find any,d only one i saw with detailed explanation was sg3525,pls am in need of the functions of all these pins,if u have worked with that before can u help me post the blog address so i can read through,i enjoy that 4 sg3525 (self explanatory)

11. ## Re: What's the function of SG3524 IC in an inverter circuit?

hey guys need help..i just want to ask, is it possible that using IC sg3524 can have an output of 10 hz frequency and how can i achieve it.

12. ## Re: What's the function of SG3524 IC in an inverter circuit?

Mr tamid could we design a sine wave inverter circuit using the sg3524 as part of the circuit. Thank u

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