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Power Management ICs Forum Discussions

MS_19060803
Level 4
50 questions asked 50 replies posted 100 sign-ins
Level 4

Hi all,

Could you tell me the equation to select Rstartup of ICE5xRxxxxAG?

Best regards,
MS

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Guruprasad_A
Moderator
Moderator 25 replies posted 10 solutions authored 5 solutions authored
Moderator

Hi @MS_19060803 ,

Current through Rstartup charges the Capacitor Ciss of internal MOSFET. This value is directly proportional to tstartup and inversly proportional to no load power. The recommended typical value for Rstartup is 50Mohm( 20Mohm ~ 100Mohms).

Kindly let me know if you have any further queries.

Regards,

Guruprasad A

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Guruprasad_A
Moderator
Moderator 25 replies posted 10 solutions authored 5 solutions authored
Moderator

Hi @MS_19060803 ,

Current through Rstartup charges the Capacitor Ciss of internal MOSFET. This value is directly proportional to tstartup and inversly proportional to no load power. The recommended typical value for Rstartup is 50Mohm( 20Mohm ~ 100Mohms).

Kindly let me know if you have any further queries.

Regards,

Guruprasad A

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