Hi ,
I found bad ir3553 on one phase, but also I see that driver for them not works because on chip ior3567 missing 3v3 enable voltage.
If I bring 3v3 to enable pin than vddcore is 1v and can see signal on scope to coils
But problem can't find reason for missing enable signal without schematic
Can simply shorted this pin to 3v3 but there will not works some security i think like over voltage temperature etc...
Tnks
I found bad ir3553 on one phase, but also I see that driver for them not works because on chip ior3567 missing 3v3 enable voltage.
If I bring 3v3 to enable pin than vddcore is 1v and can see signal on scope to coils
But problem can't find reason for missing enable signal without schematic
Can simply shorted this pin to 3v3 but there will not works some security i think like over voltage temperature etc...
Tnks
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