Hi, folks
So I have two identical half bridge smps , each uses two mosfets and one IR2110 which drives the mosftets, both IR2110 are powered from a single small transformer and rectifier/voltage regulator.
both IR2110 are driven from an SG3525AN oscillator.
Now heres the funny thing , when I made the first half bridge and put in the first IR2110 to drive the two mosfets of that half bridge it worked fine, now I installed the other two mosfets in the other half bridge which has a separate transformer , I inserted the second IR2110 which is also driven from the same SG3525 from which the first one gets its signal, but now when I attempt to drive both only one of them works , the other one doesnt work at all.
in other words the second half bridge i finished later works but the first one doesnt , and quite frankly because the first IR2110 is not driving the mosftets but its not dead or anything when i change the two IR2110 places they both work but only one at a time.
why is that ?
I have attached the schematic for my smps , the schematic shows only one full half bridge but my layout for each half bridge is exactly like in the schematic only that both IR2110 are driven from a single power supply and from the same SG3525 chip.
So I have two identical half bridge smps , each uses two mosfets and one IR2110 which drives the mosftets, both IR2110 are powered from a single small transformer and rectifier/voltage regulator.
both IR2110 are driven from an SG3525AN oscillator.
Now heres the funny thing , when I made the first half bridge and put in the first IR2110 to drive the two mosfets of that half bridge it worked fine, now I installed the other two mosfets in the other half bridge which has a separate transformer , I inserted the second IR2110 which is also driven from the same SG3525 from which the first one gets its signal, but now when I attempt to drive both only one of them works , the other one doesnt work at all.
in other words the second half bridge i finished later works but the first one doesnt , and quite frankly because the first IR2110 is not driving the mosftets but its not dead or anything when i change the two IR2110 places they both work but only one at a time.
why is that ?
I have attached the schematic for my smps , the schematic shows only one full half bridge but my layout for each half bridge is exactly like in the schematic only that both IR2110 are driven from a single power supply and from the same SG3525 chip.
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