Looking through the MP4247 datasheet there are a couple of fault indicators that seem to provide the same information:
The TEMPERATURE bit in the STATUS_WORD register appears to be the same as the OT_FAULT bit in the STATUS_TEMPERATURE register.
The VOUT_OV_FAULT bit appears to be the same as the VOUT bit in the STATUS_WORD register.
The IOUT_OC_FAULT the same as the IOUT bit in the STATUS_WORD register.
Is there any difference between these bits?
Hi Matt,
The STATUS_WORD & STATUS_TEMPERATURE register are just the Read word and byte respectively which shows the indication in the GUI when using the I2C interface.
Thus, IOUT_OC_FAULT, VOUT_OV_FAULT & OT_FAULT can be seen if its hitting the necessary limit in GUI as shown below.
The difference is just between the LSB & MSB positions of Temperature IOUT, VOUT bits and the GUI is configured as per the fault names.
Regards,
Adhish
Hi Adhish,
I am not using any GUI, I’m simply accessing the device via I2C using a RP2040, and would like to understand how to interpret these status bits.
Yes I have seen that part of the datasheet but it is still not clear for example:
VOUT_OV_FAULT: “Indicates whether a Vout over-voltage (OV) fault has occured.”
VOUT: “Indicates whether a Vout fault or warning has occured.”
That sounds like exactly the same thing to me, so what is the difference?
Please could I get some support with this.
Any more support for this?
Any more support for this?
Hi Matt,
Apologies for the delay in response.
As said before, these are registers that can be only read and could not be OTP, there is no difference between Vout & Vout_OV_fault. Same applies for OC and OT.
By default, in the MFR_CTRL1 register, the over voltage protection bit is enabled which lets the STATUS_WORD give the corresponding fault based on your output voltage.
Is there anything you want to change/alter the protection registers?
Regards,
Adhish
Ah okay so there is no difference. Not sure why there are bits that indicate the same information, but I guess it’s just the way the underlying hardware is designed.
Is there anything you want to change/alter the protection registers?
No not at the moment; I was purely curious about the status bits.
Thanks!
Hi Matt,
Yes, exactly some parts register MAP are designed based on the GUI interface we have such as Virtual Bench Pro 3.0 in this case.
Regards,
Adhish
Okay thanks, I have marked your response stating there is no difference as the solution.
