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Altera_Forum
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13 years ago

can't find the reason Stratix IV GX short-circuited between VCC and GND

hello everyone: i have some questions about Stratix IV GX the first time we configurate the FPGA in jtag, it's display configurate failed at 90%。We check the pcb and find that three pull-...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

thanks Dave

the power supply we are using is PTH05010w,and the output current is morethan 6A.so it is enough to driver.

i remove the bead,and find it is ok about the power supply.the output voltage is 1.496V. Both Vccpt and Vccio (BANK7 and BANK8) is using the same PTH0510w,but there is nothing wrong of Vccio (BANK7 and BANK8) .

what i can't understand is Vccio(BANK7 and BANK8) is ok, whlie Vccpt is short-circuited with GND, if there is something wrong of the power supply(PTH0510w).

And what i want to know is if there is something wrong about the FPGA itself,before the first configuration.it's so expensive,and should not be so fragile.

thanks again

flzhn