DRV8876: IPROPI Voltage
Part Number: DRV8876EVM
When the DRV8876 EVM is set in the unlimited current mode, and PWM is tested 100% duty output, found that when output current is higher, the output voltage will dropped, from 8.4V drop to 6~7V, Please help response which one setting need to modify from EVM?The test conditions are as follows:(1) Vm voltage input 8.4V(2) Used the Electronic load setting to CC mode 1A
"the output voltage will dropped, from 8.4V drop to 6~7V" I would think the input voltage also drops. Would you take a scope picture to show both the output voltage and input voltage?
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In reply to Wang5577:
When load current 2A, input voltage is keep 8V, not drop.
In reply to Kevin Huang8:
Do you have a resistive load or a motor to try? Sometimes the electronic loads provide false results.
This drop doesn't make sense as the internal Rdson on the device is 100mohm, so only expect around 200mV of drop under 2A load.
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