Search Engine


Add Question

90 Threads found on sg3524
hello Guys im workin on 1000w inverter based on sg3524 circuit the basic problem is when the inverter starts it has unstable volt & frequency For about 1 sec any ideas ? thx guys John Here is the circuit i
This is EI iron core trafo originally used for 5kva stabilizer. l carefully disassembled it and found out the manufacturer's turn per volt which is TPV = 1.09 211T for 230V 220T for 240V My choice of this trafo is that they are lying around me and I have access to hundreds of them. So I want to put them into useful work Now I want to use thi
123353 here's the drive circuit although it needs more major revisions and haven't tested yet if you want to try it... try it on a breadboard and also 123354 for inverting i prefer search on google there are plenty of how to do this.... about the sg3524 try to read the datasheet because its kind o
Hi, I would like to simulate SGx524 IC using LTSpice, Proteus or Multisim. I've searched and tried everything I could find about this but none of them worked. Does anyone have a SPICE model or library that I could use to simulate any of this ICs? Thanks!
I was trying to make a push pull inverter using SG2524/sg3524/4047, but I can not find any PWM i.c in proteus, except some of expensive and high wattage modules. is there any i.c available in proteus library for PWM simulation, or is it possible to download above mentioned i.cs into the proteus library ? shall be thankful for your kind and wort
SG3525 is designed to drive push-pull converters and has no option to get 49 % duty cycle from a single output. You can connect an ORing circuit or use sg3524 with both open collector outputs parallel connected. Unfortunately it's not suited to drive MOSFETs without a buffer stage.
Hello Please am new here i need a sg3525,sg3524 using Iris h bridge dc to ac inverter circuit diagarm
please can someone help me with a 12vDC to 300vDC booster converter circuit diagram of sg3524:?: please i really need it
Do you think its a good to use error amplifier for pv emulator? I mean taking '-' and '+' for current reference and and feedback purpose(and generating PWM) or would it wise to use external PI controller and use the ICs comp pin for custom PWM control. I am using buck converter pv emulation.
The question sounds confused, because SG3525 is a PWM control circuit. What you probably mean is how to connect a buck switcher to the IC. SG3525 has two outputs with < 50 % duty cycle, so you would need to combine both outputs to drive the buck switch. sg3524 provides a simpler way to get > 50 % output duty cycle, so it's usually preferred.
sg3524,25,26,0R42 has no library in proteus so you can not simulate it but i can send you some pwm chip library for proteus or you can search in the forum you will see it.
please suggest me full bridge mosfet driver circuit or ic.i have used sg3524,tl494,Sg3525 and ne556,cd4013 combined. problem with SG3525 is its high cutoff voltage.while ne556,cd4013 gives output but on load it gets distorted.
What are you using it for? Is it for converter or inverter? Will the MOSFETs be made up of BJTs or MOSFETs. The sg3524 IC messed me up sometime ago because it has insufficient dead time and using it to drive MOSFETs directly at hgher frequency created a problem. Please consider the SG3525 IC which solved the problems listed above.
If you check my profile, you will discover that about a month ago I had the same problem. I have the following to tell you: The sg3524 Ic has insufficient dead time to switch the MOSFETs ON and OFF very well. Consider adding a totem pole arrangement to the output of the IC to fully drive the MOSFET. Try using a driver IC like IRF2110 or TL527. I la
I have made an inverter using tl494 and sg3524 chips but there is no overload protection circuit.what changes should I make for the protection circuit.
good evening everyone,please my sg3524 pin 14 and 11 output are misbehaving,1 need a frequency of 50HZ which i was able 2 get but the voltage at that pins are 0.5v which i was not able to increase,even if i want to use a driver incorporating a transistor,it means i need a good amount of current to drive them,but with d output am having i can
Dear Sir In my inverter there is a IC sg3524(16 pin ic) used for osscilation & pin 11 & pin 14 used for Mos drive voltage, as we know when these voltage has any type of difference then mosfet is blow out. Plz suggest me to some modification in circuit if any voltage diffrence found in both mos drive voltage then s
sg3524 is open collector sg3525 is totem poll sink n source ilke uc3844
I want to make a current limiting to 1 ampere on the converter to charge the rechargeable battery? I use sg3524. thanks.
The totem pole can both sink and source current, whereas the sg3524 output can do only one - sink or source. So, you have to rely on a resistor to do the other. If you configure the sg3524 output to sink current, you rely on a pull-up resistor to source current. If you configure the sg3524 output to source current, you rely on a pull-down (...)
I guess you are misunderstanding sg3524 output polarity. Pulse width of a single output is 0..slightly below 50%, respectively 0..nearly 100% when paralleling both outputs. Re-read the datasheet.
Enjoy sg3524 full ups
Hello Everyone! What is the minimum frequency possible in sg3524 IC. Is is possible to make 50/60 Hz low power inverter using any easily available IC.
Hi Friend plz any one have schimatic for full bridge inverter using transformer and sg3524? plz if any body have it help me
Actually there is '-' ,'+', and comp terminals for sg3524 pwm controller.. i m designing isolated converter for our application. i need to isolate the voltage sensing which is given to '-' terminal of the error amplifier.. how to acheive it..? any idea or example circuit..? Usually i used to go with tl431 and optocoupler at the feedback side to
You should start with a small capacity inverter, like 100W. Then scale it up for your required power. Start learning on the various blocks - PWM control section, feedback section, MOSFET drive section, power stage, output filter, etc. Two very common PWM controllers you could take a look at are SG3525 and sg3524. You can find lots of inverter-re
hi everybody this is the last version of my 2.5-100v 0.1-25a laboratory smps 84199 is it working
Hello ssshocked, what fvm is trying to tell you is if you look at your oscillator sg3524 pin 11 and 14 are used as output oscillator and their will be need of pulldown resistors to will down the base of your npn transistors ,and you can only use bootsrap when you are dealing with high side where not pushpull .
Have you decided which controller you'll use? sg3524, SG3525, microcontroller or something else? If you want to do it without center tap transformer, use full-bridge topology instead of push-pull. If the transformer primary voltage rating is 12V, secondary rating of 240V won't be enough. Hope this helps. Tahmid.
is that right by connecting sg3524 emitter terminal to gate of the mosfet.....? Off-switching speed will be limited by the emitter pull-down resistor. For fast switching, a gate driver stage may be reasonable.
Feed the 555 output to a flip flop. Feedback the outputs of the flip flop a high/low side driver which will drive the four MOSFETs in the H-brigde. Why do you want to use the 555 chip? Can't you use SG3525 or sg3524 or TL494? Or even the CD4047?
sg3524 should be in off position while charging. In charging mode body diodes are used for rectification. Gates shroud be in off state. A voltage drop on diodes(0.7V) in contrast to when FETs are hard on is a cause of a little heating of FETs while charging. Check your charging current for max 20A.
You can get an idea by reviewing the data sheet and application circuits of sg3524 or TL494, that are ORing current and voltage error amplifiers. The important point is that the PI or PID integrating capacitor is common to both error amplifiers. The loop gain (and possibly additional compensation) of both loops has to be adjusted according to the c
Can I replace UC3524 with sg3524 What's your impression when you compare the datasheets? I always thought they are the same.
My inverter cannot carry lcd tv(samsung).push pull using sg3524
sg3524,sg3526 are not intended to be used as pure sine wave, but can be used as modified sine wave. Sine wave purity depends upon the filter output. You can refer to this... A similar thread is found.:
There may be a problem with sg3524 error amplifier input voltage range. You can try to divide the error amplifier output down to the allowed voltage range.
Hello mike,you can use TL494 or sg3524 with IR2110 it works very well and you can also download the application note of IR2110 it will also help you.
Show us your schematics with component values.You cant get exact 50% duty cycle from sg3524. See datasheet.
I also need sg3524 Proteus Model. Anybody have it?
How to test this integrated Regulated PWM " sg3524N " ? What does it mean by " shutdown ", " Current Lim + " & " Current Lim - " ? why are they used ? sg3524 REGULATING PULSE WIDTH MODULATORS Look these pictures and read text
can anyone plz describe the blanking pulse being used in sg3524, is it for determining the percentage of duty cycle,if so how it can be'll highly appreciable if it is explained by wave shape of oscilloscope.
You mean upper left FET is getting destroyed? Check related components which can cause trouble. MPSA42 not switching probably. 12V should be present on 4.7uF capacitor. sg3524 is similar ic with adjustible duty cycle. 6800pf capacitor is necessary in lower leg to avoid shoot through.
sg3524 has an error amplifier which corrects PWM duty cycle according to its input.. Play around with pin 1 and 2 of the device and this should vary your duty cycle, these are the inverting/non-inverting inputs of the error Study the datasheet and application notes for the S
It's a tension converter sg3524 12VDC/ 230VAC 200W. It is equipped with a ventilator driver and a circuit that prevents the battery discharge. Also measurement of battery tension on three diodes. It can be powered on
Hi, Try this. Almost cost less if you try it to develop it by yourself. sg3524 pdf, sg3524 description, sg3524 datasheets, sg3524 view ::: ALLDATASHEET :::
Simple indeed, but using complementary MOSFETs, surely not what Arup is asking for. Your plan involves designing a new inverter circuit instead of repairing an existing one. The linked image is for showing the idea. Original design of mine that has a sg3524 has loop from the output to automatically contro
CCP / PWM ? Can i use this module to control the output volt of my dc/ac inverter ? I mean as sg3524 and tl494 control the pulse witdth to the transistors according to the feedback from the inverter ac output? As the load increased on inverter ac side the voltages decrease but tl494 sense it and inccrease the dutycycle of 50hz Is this is ccp/pwm
Yes, comparators may work similarly if you properly configure the 16F628 Regarding the PWM, you must write some code to implement an inverter similar to sg3524, but have in mind that PIC's PWMs outputs are CMOS and have no drivers to handle power
Are you referring to the Microsemi sg3524 PWM controller? If so I would start by reading the data sheet. As far as understanding how a Microsemi sg3524 based inverter circuit works, I would start by reading up on inverter circuits and their operation. Just search for Inverter Circuit design on Google or some other search engine and get reading. G