STSPIN32F0 12v internal regulator problem

[cnc_designer]

Hi,

I designed BLDC motor driver 12v powered card with the STSPIN32F0 chip and developed my own software. My codes run smoothly on the STEVAL-SPIN3201 kit.

But on the own my card, 12v regulator outpus voltage inside chip didn't rised more than 1v.

When the bits 6 and 7 are 0 on the GPIOF port, I read zero volts at 12v output. When I write 1 to these bits, the regulator output rised to one volt.

Therefore, MOS drivers not working. But My card is runing and motor turning if I connect the regulator output pin to Vmot pin.

I changed 4 different STSPIN32F0. But 12v regulator didn't worked.

I think the my all ICs faulty, but can there be a trick that I ignored?

Note: 12v regulator outpus connected to 10uF and 100nF only. I dont use this voltage any where.