STEVAL-ISV020V1 increase VEOC

rsmqu · ‎2024-04-07

Hi @Peter BENSCH can you help me how to modify the STEVAL-ISV020V1 to make the VEOC up to 5.3V?

Peter BENSCH · ‎2024-04-08

Well, the data sheet, section 6.1 describes how VEOC is set with a voltage divider R4, R5, R6. The same designations of the resistors can also be found in AN4397, where the equations 12...14 in section 4.3.3 only have to be rearranged according to the required resistance (VBG = Bandgap Reference Voltage = typ 1.23V).

Regards
/Peter

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Peter BENSCH · ‎2024-04-08

Well, the data sheet, section 6.1 describes how VEOC is set with a voltage divider R4, R5, R6. The same designations of the resistors can also be found in AN4397, where the equations 12...14 in section 4.3.3 only have to be rearranged according to the required resistance (VBG = Bandgap Reference Voltage = typ 1.23V).

Regards
/Peter

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rsmqu · ‎2024-04-08

Can you share me a schematic diagram to make the VEOC up to 5.3V?

Peter BENSCH · ‎2024-04-08

The schematic for this is identical to a smaller VEOC, only the resistors R4, R5 and R6 have to be adapted. Please read the sections mentioned in the data sheet and AN4397 and try to transform the equations.

Regards
/Peter

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