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How to test this integrated Regulated PWM " SG3524N " ? thanks

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dineshdeshmuk

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How to test this integrated Regulated PWM " SG3524N " ?

What does it mean by " shutdown ", " Current Lim + " & " Current Lim - " ?

why are they used ?

thanks
 

How to test this integrated Regulated PWM " SG3524N " ?

What does it mean by " shutdown ", " Current Lim + " & " Current Lim - " ?

why are they used ?

thanks
 

How to test this integrated Regulated PWM " SG3524N " ?
What does it mean by " shutdown ", " Current Lim + " & " Current Lim - " ?
why are they used ?
Click to expand...

SG3524
REGULATING PULSE WIDTH MODULATORS
https://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/DATASHEET/CD00000117.pdf

Look these pictures and read text carefully,
you should be able to make open loop test circuit
oscillator calculations formula is there for Rt & Ct
and block diagram show what to measure and where.
Everything you need has been told there.

Hey Man , What else you need..............
 
kak111 said:
SG3524
REGULATING PULSE WIDTH MODULATORS
https://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/DATASHEET/CD00000117.pdf

Look these pictures and read text carefully,
you should be able to make open loop test circuit
oscillator calculations formula is there for Rt & Ct
and block diagram show what to measure and where.
Everything you need has been told there.

Hey Man , What else you need..............
Click to expand...

Can this SG3524 be used as a gate driver for a power Mosfet ?

what should be the result or output of the open loop test ? (I don't have the oscilloscope)

thanks awfully
 
Can this SG3524 be used as a gate driver for a power Mosfet ?
Click to expand...

Yes. Here is two examples................

http://www.chinaicmart.com/uploadfile/ic-circuit/2009628212138296.gif

http://www.eleccircuit.com/wp-content/uploads/2008/07/12vdc-to-37v-dc-converter-by-sg3524.jpg

what should be the result or output of the open loop test ? (I don't have the oscilloscope)
Click to expand...

You need 2 channel oscilloscope to check output signals in pins 12 & 13 .
You should see some signals between pict.1 and pict.2 ( output low pulse is modulated [PWM] and varies depending on control )

PWM Output IcSGxxx.jpg
 
thanks
KAK .......

This IC with P channel HEX Power Mosfet (IRF 9520) + few zeners + some resistors + step down transformer (converting 110 V to almost 40 V) + LM 358 N (LOW POWER DUAL BIPOLAR OP-AMPS) ....... are connected in a circuit to produce different voltage supplies (different outputs) 24 VDC, 10 VDC etc .....

Can you tell me how the circuit is operating ? OR what actually is happening in the circuit ?

without any schematic, how to understand or read which component is connected to which component & to which pin no. ?

thanks
 

Datasheet rewritten...................

sg3524_block_diag_text_01.jpg
sg3524_block_diag_text_02.jpg
sg3524_Fig6_7_8.jpg
sg3524_general_test_pict_rr.jpg

Pict`s & text´s : Texas Instruments SLVS077D – APRIL 1977 – REVISED FEBRUARY 2003
 
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