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Old 24th May 2010, 03:22 PM   #11
authlxl is offline authlxl  China
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I think circuit simple yet,but lots of parameter can make it unstability,I know QSC ,YAMAHA and other pro amplifier use such circuit topology,but anyone can send us one formula that can calculate L and C with series-resonance circuit(ZVS mode).otherwise anyone can not make it work stable and cool.
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Old 24th May 2010, 03:45 PM   #12
AP2 is offline AP2  Italy
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Quote:
Originally Posted by savu View Post
Hello AP2 ...

I would like to test the schematic, i have a chip on hand (Ionutzxop old board) and i want to make the smps for him. I wanted to use that yamaha schematic + modifications and Mosfet not IGBT + ETD44 core.
but if yours is simpeler I could try it

Best regards,

Savu Silviu
Hi Savu,
ok,I put tomorrow because I have to remove some parts from the scheme (includes other functions).
Yes You can use IR2153 (difference is only diode bootstrap incluse on IR21531D)
I think with ETD44 this circuit is good up to 600W (not regulated ).

Regards
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Old 24th May 2010, 03:53 PM   #13
AP2 is offline AP2  Italy
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Originally Posted by authlxl View Post
I think circuit simple yet,but lots of parameter can make it unstability,I know QSC ,YAMAHA and other pro amplifier use such circuit topology,but anyone can send us one formula that can calculate L and C with series-resonance circuit(ZVS mode).otherwise anyone can not make it work stable and cool.
Yes, I full agree.
I can put only schematic for this chip.
formula change with any type of inductor and it is not pure theoretical application

Regards
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Old 24th May 2010, 05:26 PM   #14
savu is offline savu  Romania
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To AP2:
Thanks a lot ...
Best regards,
Savu Silviu
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Old 25th May 2010, 05:18 PM   #15
AP2 is offline AP2  Italy
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Hi,
This is IR21531 scheme (not regulated PSU)
it is simple and good collaudate, sure... not suitable for audiophile amplifiers but eg. for sub is very good up to 600w.
( power is in relation of some components value)
D4-D3 is a simple "PUMP-CIRCUIT" for replace 50hz trafo 12V.
at switch-on,C4-Q4 create a small imbalance pwm(for very small time) (this reduce charge-current on primary)

Regards
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File Type: png IR21531 Circuit.png (57.3 KB, 1094 views)
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Old 2nd June 2010, 03:02 PM   #16
savu is offline savu  Romania
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Hi AP2.

Today i recieved 25 pcs of ir2153.

I will try you're proposal.

I will keep you updated when i start to work on it (bussy at work for the moment).

Many thanks,

Savu Silviu
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Old 2nd June 2010, 04:12 PM   #17
AP2 is offline AP2  Italy
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Quote:
Originally Posted by savu View Post
Hi AP2.

Today i recieved 25 pcs of ir2153.

I will try you're proposal.

I will keep you updated when i start to work on it (bussy at work for the moment).

Many thanks,

Savu Silviu
Hi savu,
yes np, tell me when is ready,also when traspose this circuit from CAD, put a small mistake on q4. after I put output circuit with lc filter e datasheet for realizze good trafo.
this power supply remaining quiet for 600w sub amplifier.

regards
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Old 31st October 2010, 10:15 PM   #18
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Originally Posted by m-tech View Post
Actually, you can build very nice and small SMPS using IR2153 ( without output voltage regulation ). But your schematic need little improvements ( you need to add snnubers, inpu NTC, and some kind of overcurrent limit.
You can find lots of stuff on net.
I am very happy with my IR2153 based smps.
what is the true valor of pr101?? is a ptc resistor or ntc resistor?
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Old 2nd November 2010, 03:59 PM   #19
sahu is offline sahu  India
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Quote:
Originally Posted by AP2 View Post
Hi,
This is IR21531 scheme (not regulated PSU)
it is simple and good collaudate, sure... not suitable for audiophile amplifiers but eg. for sub is very good up to 600w.
( power is in relation of some components value)
D4-D3 is a simple "PUMP-CIRCUIT" for replace 50hz trafo 12V.
at switch-on,C4-Q4 create a small imbalance pwm(for very small time) (this reduce charge-current on primary)

Regards
ur above scheme in working condition = ?
if s then give hear trans. ditails.

SOORY FOR MY BAD ENG. LANG.
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Old 2nd November 2010, 05:26 PM   #20
AP2 is offline AP2  Italy
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Originally Posted by sahu View Post
ur above scheme in working condition = ?
if s then give hear trans. ditails.

SOORY FOR MY BAD ENG. LANG.
Hi,
Yes, it work. I test up to EE42 trafo for 1,2kw. (two amp at bridge for sub).
no problem. Is clare, not adeguate without experience in high-voltage/ pcb development and trafo.

Regards
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