MP5515: Reading VIN and VSTRG Threshold during Power Failure

DC-DC Power Converters
1

Are we able to still read VIN and VSTRG from the I2C registers when input voltage is low and PFI is asserted?

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2

The I2C registers can still be read as long as VCC is present. Even when 12V input is lost, VCC can still be supplied from either VB or VSTRG.

3

Here is a table for further reference:

image001

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5

The I2C registers can still be read as long as VCC is present. Even when 12V input is lost, VCC can still be supplied from either VB or VSTRG. Please refer to Table1 in MP5515 Datasheet for more details.