Troubleshooting half-bridge smps

[madan1]

Hello everyone, I'm trying to fix what seems to be a half-bridge smps.
The switching controller is sg2525a, which I have replaced with a brand new sg3525a. The low and high mosfets are 1c27ac 6n50. The mosfet driver is IRS2301S.
Both mosfets were tested outside circuit with a component tester and seem to be fine.
With oscilloscope I see ~65khz switching signal on both low and high outputs of the controller, but on the output of the mosfet driver there is switchig signal only on the low output (flat line on the high output).
So I guess the mosfet driver is faulty?
IRS2301S is kinda hard to find, so I'm wondering if I can replace it with IRS2106S or IRS2186S?

[madan1]

And to close the thread - after replacing the controller with SG3525 and the driver with IRS2186/IR2186 the two mosfets 1c27ac 6n50 died. They took with them both the controller and the mosfet driver. So I soldered back the original sg2525 controller, got this time a IRS2101S/IR2101S and a couple of STD5NK50ZT4 and now the unit works fine.
For indexing purposes - the unit is a d-class audio amplifier Anaview ALC0100-2300 (ALC0100-2X00).