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Old 13th October 2010, 10:53 AM   #531
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Quote:
Originally Posted by gogowatch View Post
How to level shift these power drivers as high side? Use ir2110, ir2113 or ir2010 again?

Cheers,
There are several ways of using them. It depends on your idea and need. For eg. a fast optocoupler or you can use them as a driver in UCD amp instead of discrete transistor driver etc. etc. Several ways of creating your own way to reach the aim just think and then experiment your idea. If you find the correct way it works if you did not find, you learned the wrong way that doesn't work!

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Old 13th October 2010, 12:48 PM   #532
luka is offline luka  Slovenia
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Depending on freq. and fets used, you could use hcpl 3180 from agilent, good up to 250kHz they say
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Old 13th October 2010, 01:15 PM   #533
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Quote:
Originally Posted by luka View Post
Depending on freq. and fets used, you could use hcpl 3180 from agilent, good up to 250kHz they say
Right Luka,

i did not think a newbie will try it. So i agreewith you. But, again there are several ways of using a single mosfet driver as a high side driver! You know how!

Best wishes,
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Old 15th October 2010, 01:53 PM   #534
Eva is offline Eva  Spain
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Check FAN3228 and FAN3229 gate drivers from Fairchild. They feature differential schmitt-trigger logic inputs making discrete differential level shifters (like the one used internally in IR chips) very easy to implement (with just two high voltage transistors).

Furthermore, propagation delay of these drivers is around 20ns, and maximum idle supply current is around 1mA.
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Old 18th October 2010, 03:23 AM   #535
norazmi is offline norazmi  Malaysia
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Default Confuse diode

hi im refer to the silk screen regarding diode 1N5817 state there but on schematic it is 1N5225, totally confuse here...

here is the attachment...

Please see on DF1 and DF2 on schematic it is 1N5817 but on silk screen file it is 1N5225??
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File Type: pdf EJTAGLE-UCD-COMP.pdf (183.2 KB, 724 views)
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Old 18th October 2010, 03:26 AM   #536
norazmi is offline norazmi  Malaysia
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Default Confuse diode 2

here is the schematic....

Hope someone can make it clearly because i want to build it...

Regards.
Azmi
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File Type: pdf My IR2110UcD update on 6_6_11.pdf (17.0 KB, 726 views)
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Old 18th October 2010, 03:29 AM   #537
norazmi is offline norazmi  Malaysia
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its from Lycanlk design...

Thanks.
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Old 18th October 2010, 09:11 AM   #538
luka is offline luka  Slovenia
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Diodes for fets are 1n5819 or similar, as is 1n4148
and for IC supply DC1 and DD1 are zener diodes, just don't know why only 3v, but probably has something to do with LM311 speed
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Old 18th October 2010, 09:59 AM   #539
norazmi is offline norazmi  Malaysia
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Thanks alot Luka

can i use mur120 instead of 1N5819?
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Old 18th October 2010, 10:03 AM   #540
luka is offline luka  Slovenia
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yes, I always used mur's
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