10.1 Consideration for board layout
■
Primary (input side)
：
AC, BC, R pin
Secondary (output side)
：
VOUT, S, TRM, IOG pin
FG (base plate)
：
Nut (4 places), Aluminum base plate, Heat sink
■
Primary - Secondary
：
5mm or more
Primary -FG
：
5mm or more
Secondary - FG
：
1.6mm or more
Primary interphase
：
3mm or more
Wiring of AC pin - BC pin
：
3mm or more
■
Fig.10.1
Insulation
distance
Clearance and creepage requirements vary based on different safety standards and conditions of
usage. Please place the components and wiring pattern according to those safety standards.
A-24
The potential voltage of each terminal is given below. External components that are connected to
these terminals should be at same potential voltage.
In order to meet the breakdown voltage specification of products, insulation distance between
components and between patterns is recommended to ensure the following.
Applications Manual
TUNS300/500/700
Bottom view
2.1 Pin configuration
10. Board layout
