About DE.1

DE.1 · 2023-03-23

I made a prototype board using STM32H7A3LIH6Q.Before the firmware was written, a current of 500mA flowed(@+3.3V).VDD and VSS were not shorted.Q1)Have there been such cases in the past?Q2)Are there any mistakes in the wiring of the circuit?Q3)VFBSMPS...

DE.1 · 2023-03-24

Thank you for your reply.The value was wrong.After fixing the capacitor, the current value decreased.Thank you for your pointing out.

DE.1 · 2023-03-23

Sorry, I made a mistake.Below are the measurement results.When I set SMPS and LDO to [SMPS_2V5_SUPPLY_LDO], I observed 3.3V, 0.5A.When I set SMPS and LDO to [POWER_LDO_SUPPLY], I observed 3.3V, 0.05A.

DE.1 · 2023-03-23

Thank you for your reply.I looked at the H7B3I-DK schematic.I understand there is a difference with the H7B3I-DK schematic.When I set SMPS and LDO to [SMPS_2V5_SUPPLY_LDO], I observed 3.3V, 0.05A.When I set SMPS and LDO to [POWER_LDO_SUPPLY], I obs...

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I made a prototype board using STM32H7A3LIH6Q. Before the firmware was written, a current of 500mA flowed(@+3.3V).

Re: I made a prototype board using STM32H7A3LIH6Q. Before the firmware was written, a current of 500mA flowed(@+3.3V).

Re: I made a prototype board using STM32H7A3LIH6Q. Before the firmware was written, a current of 500mA flowed(@+3.3V).

Re: I made a prototype board using STM32H7A3LIH6Q. Before the firmware was written, a current of 500mA flowed(@+3.3V).