Cosel TUNS1200F Series, Руководство по применению

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■
At low temperature, ripple voltage of boost voltage increases due to Cbc freezes.
Select a capacitor of which ripple voltage of boost voltage does not exceed 30Vp-p
on an actual operating condition.
■
And check the maximum allowable ripple current of the capacitor.
■
Fig.4.1,4.2 shows the relationship between ripple voltage of BC and temperature.
Fig.4.1
Ripple voltage of
BC by Ambient
temperature
AC200V
Withstand voltage
of Cbc : 450V
4.1 Ripple voltage of boost voltage
A-9
Applications Manual
TUNS1200
0
10
20
30
40
0 20 40 60 80 100 120
Ripp
le
v
ol
ta
ge
of
BC
［
Vp
-
p
］
Output current
［
%
］
-20 ℃
-30 ℃
-35 ℃
-40 ℃
2.1 Pin configuration
4. Operation Under Low Temperature Conditions
Cbc = 780 μF_ELXS 451VSN391 × 2 parallel (MIN)
0
10
20
30
40
0 20 40 60 80 100 120
Ripp
le
v
ol
ta
ge
of
BC
［
Vp
-
p
］
Output current
［
%
］
-20 ℃
-30 ℃
-35 ℃
-40 ℃
Cbc = 1410 μF_ELXS 451VSN471 × 3 parallel (TYP)
0
10
20
30
40
0 20 40 60 80 100 120
Ripp
le
v
ol
ta
ge
of
BC
［
Vp
-
p
］
Output current
［
%
］
-20 ℃
-30 ℃
-35 ℃
-40 ℃
Cbc = 3290 μF_ELXS 451VSN471 × 7 parallel (MAX)