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CUI Inc

│ SERIES: VFB400W │ DESCRIPTION: DC-DC CONVERTER

date 01/30/2014

│ page 7 of 10

Figure 1

Standard Parallel Connection

Figure 3

N+1 Redundant Connection

Figure 2

Parallel Connection With Programmed And Adjustable Output

Figure 4

N+1 Redundant Connection With Programmed Output And Adjustable

Output Voltage

+S

+V

-V

-S

PC

+S

+V

-V

-S

PC

L

O

A

D

+S

+V

-V

-S

PC

TRIM

TRIM

+S

+V

-V

-S

PC

L

O

A

D

+S

+V

-V

-S

PC

+S

+V

-V

-S

PC

L

O

A

D

TRIM

TRIM

+S

+V

-V

-S

PC

+S

+V

-V

-S

PC

L

O

A

D

APPLICATION NOTES

1. Parallel Operation

TheVFB400Wseries(excludingthe5Vdcoutputmodels),aredesignedforparalleloperation.Wheninparalleltheloadcurrent

canbesharedequallybetweenthetwomodulesbyconnectingtheirPCpins.TheVFB400Wcanbesetupintwodifferentmodesto

achieveparalleloperation.Thestandardparalleloperationissuitablewhenloadcannotbehandledbyasingleunit,whereastheN+1

redundantoperationissuitableforloadswhenbackuppowerisrequired.

For more information, please visit the product page.