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-   -   Hifonics XX-Cyclops ( 2nd December 2012 03:40 AM

Hifonics XX-Cyclops
Need a part # for D5 of the driver board. This driver board has the 4 IR21844S IC's. The cathode of D5 ties to pin 13, anode ties to pin 7.


Tom7227 2nd December 2012 04:03 AM

It's is the same as D1, D6 and D3, looking at one right now. I have 2 driver boards here at the moment. One has X355, another has X378 2nd December 2012 04:06 AM

So that part # equates to which manufacturer part #, kind of what I'm after. 2nd December 2012 04:31 AM

Sanken SJPX-H3??

Perry Babin 2nd December 2012 07:29 AM

2 Attachment(s)
The reference design/demo board from IR lists this diode as a 600v 1A fast recovery diode and lists the MURS120DICT-ND specifically. The MURS160 would likely be the right part because the 120 is a 200v diode.

The driver board I have here (DWM3640 - similar to the 4-IC board) has an SMA package diode. The MURS160 is in an SMB package which is a bit wider.

The US1J is in the SMA package and may be a better fit on the driver boards.

Bear in mind that I've never had to buy replacements for these so I don't know if the components listed here will work. 2nd December 2012 02:21 PM

The sanken part is 300V 2A fast recovery. I can go with the wider bodied part, plenty of room.

This part was shorted.

I'll order up both versions of that part.

S Merlington 2nd December 2012 02:53 PM

I have some used ones here but they test good ..

If you want them send me a Im with your address and i will ship them out first thing in the morning 3rd December 2012 04:11 PM

Had some at work, give it a go. 4th December 2012 03:38 AM

Replaced the bad diode, found an op amp pulling the +15V supply down - replaced that one.

Now the amp shuts down right after the second relay closes. No protect light, just a complete shutdown.

Perry Babin 4th December 2012 05:09 AM

In the time before the relays engage, look at the signal on the output side of the large filter inductors. Do you see audio or do you see a spike of DC?

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