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TPS7A4001: Schematic review

Part Number: TPS7A4001
Other Parts Discussed in Thread: PSEMTHR24EVM-081

Hi All,

please can you review our schematic with TPS7A4001 LDO

Vin = 56V

Vout = 3.3V

Iout = (12mA TPS23881RTQ + 11.3mA ISO1644DW) ~25mA max ; Iout_typ = 15mA

-> is one 10uF 25V 1206 X5R ( effective @ 3.3V -> 9.5uF) enough or should i leave the additional footprint C61 and populate it with 10uF 25V 1206 X5R?

-> on the input is 1uF 100V 1206 X7R (effective @ 56V -> 470nF) is this ok or do i need additional C66 to be populated with 1uF 100V 1206 X7R?

in TIDA-050026 there is similar configuration of LDO and only one 1uF 100V 1206 X7R is used

-> as the 56V comes from a isolated flyback converter do i need some LC or Ferrite bead filter on the input of TPS7A4001?

Best Regards,