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Re: [TCML] the ir2110 mosfet driver chip for sstcs?
Hi Earl,
I have used the IR2110 in an SSTC application with no issues. From my
understanding the shut down can be explained in two sentences.
1. When the shut down is logic high outputs are turned off.
2. After that logic high is removed the chip outputs are again in phase with the
inputs starting from the next positive input edge.
So you just keep supplying your input signals and supply a shut down signal when
you want to shut it down and remove it when you want to start up again.
Hope this answers your question.
I had an interesting experience regarding this shutdown.
Thermal overload triggered the shut down of the IR2110 drivers driving an
H-Bridge. I turned off the AC power to the rectifier producing DC for the
H-Bridge, but the rectifier capacitors remained charged at 300V because the
MOSFET drivers were shut down. So before being able to investigate the shut down
I had to wait for the thermostat to remove the shut down command and discharge
the capacitors. 2 anxious minutes of wondering whether it was just a thermal
overload problem or something more sinister.
Sure enough after the thermostat cooled, the shut down was removed and the
rectifier capacitors discharged producing a little squirt of corona.
D.
________________________________
From: earl rhodes <earl_1975@xxxxxxxxxxxxx>
To: tcbouklist@xxxxxxxxxxxxxxx; tesla@xxxxxxxxxx; uktcb uktcb
<uktcb@xxxxxxxxxxxxxxxxx>
Sent: Tue, June 7, 2011 8:33:56 PM
Subject: [TCML] the ir2110 mosfet driver chip for sstcs?
hi guys
ive come across a driver chip for sstcs the "ir2110"and the rest of that
particular set of chips ir 2112 ir2113
i have a few questions concerning thier use in sstc
the chip sheet says they already have cycle by cycle shutdown protocols so im
assuming i no longer need the flipflopclock circuit to control my shut down is
this correct
if this is correct i only need the one chip for it to work
where my last board had a total of seven chips on it
there was a 74hc14 a cd4013 a 74hco8 and four tc4420
that was without having any ocd on the board
i could get away with only the one and they are cheap from hong kong at around
150 each
your input would be totally apreciated
i have had some succes with my other board having about 5inch disharge but i do
keep blowing driver chips for no apparent reason
so ive rebuilt a board ready to take the ir 2110 it will be a couple of weks
before i get them, im totally skint at the moment and then when i do get them
bought it will take a further two weeks for them to arrive so in the meantime i
just thought id ask someone else if im correct about this chip
heres a link to the data sheet
http://www.irf.com/product-info/datasheets/data/ir2110.pdf
if im totally off base its not unusual for me so let me have it
thanks
earl
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