Part Number: PMP7763
Hi Sir/Madam,
Please help to confirm the value of resistor in the reference design, R115 which is 0.82ohm. Customer raised the concern about the resistance value which can withstand for the high voltage application.
Thanks.
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Part Number: PMP7763
Hi Sir/Madam,
Please help to confirm the value of resistor in the reference design, R115 which is 0.82ohm. Customer raised the concern about the resistance value which can withstand for the high voltage application.
Thanks.
This is a legacy design from the old National Semiconductor power application design center. The 0.82 ohm resistor is a ground referenced current sense and is properly sized for the switch current and sense threshold.