Hi,
I currently implement a circuit using the LM5122, mostly like the circuit shown at page 39, Fig. 40 in the datasheet. Input voltage is 20-30V, Vin, CSP and CSN were specified for 75V, so this shouldnt be a problem.
I double checked CSP and CSN, no they were not connected wrong (reversed or so).
The circuit doesnt work, and the two 100 ohm resistors forming a filter together with 100p at the CSP and CSN inputs burning away!!
My sense resistor is 6.8mohm (measured) and connected with a 4 wire scheme to get correct readings for the current.
This happens on two boards.
Any idea?
With best regards
Gerhard