Tool/software:
Hi, Sir,
DRV8251 can support output current adjust by adjust VREF voltage? from below formulation, I think it should support. But in actual test,
output current always keep same(around 200mA) when I adjust VREF voltage. thanks!
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Tool/software:
Hi, Sir,
DRV8251 can support output current adjust by adjust VREF voltage? from below formulation, I think it should support. But in actual test,
output current always keep same(around 200mA) when I adjust VREF voltage. thanks!
Hi,
Thank you for your questions. Our expert will feedback to you within a day or two.
Hello,
Yes, the DRV8251 supports current regulation. Current regulation is adjusted through the VREF pin. Using the formula you provided, a current regulation threshold can be set by setting VREF with the corresponding Rsense value.
What is the Rsense value?
Best,
David
Hello,
The schematic looks good. Generally, we recommend using more bulk capacitance, but it would depend on the VDD Motor voltage.
Bulk Capacitor Sizing for DC Motor Drive Applications
Best,
David