DC/DC Convcerters
ER11
B78334A****A003
Construction
■
ER 11 ferrite core with clamp
■
10 gullwing terminals
Features
■
Very low total height
■
Low stray inductance,
low winding capacitance,
low DC resistance
■
High
DC
magnetic bias
Applications
■
Pulse transformers
(A1034, A1018)
■
Broadband transformers (A1034)
■
Drive transformers for power semiconductors
– Full bridge (A1018)
– Small-signal semiconductors (A1034)
■
Low-power DC/DC converters
(A1033, A1034)
Packing
24-mm blister tape,
packing unit: 700 pcs.
Transformation ratio
See table on next page
B78334A103*A003
B78334A1018A003
Recommended pad arrangement
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DC/DC Converters
ER11
B78334A****A003
Technical data
L
1
mH
N
1
: N
2
: N
3
: N
4
: N
5
L
S 1)
µH
2.5
1.0
R
DC 2)
Ω
< 0.6
< 1.0
> 0.8
C
K 3)
pF
25
40
25
f
r 4)
MHz
> 3.00
≈
0.75
≈
0.50
V
P 5)
V
AC
1000
1000
1000
Ordering code
B78334A1033A003
B78334A1034A003
B78334A1018A003
0.10
±
55% 1 : 1 : 1 : 1
1.00
±
55% 1 : 1 : 1 : 1
0.27
±
55% 1 : 2.6 : 2.6 : 2.6 : 2.6 3.0
Attenuation versus frequency (for transformers with L
1
= 1 mH and L
1
= 10 mH)
1)
2)
3)
4)
5)
Measured on 1–2 or 1–10, all other windings short-circuited
Measured on 1–2 or 1–10
Capacitance winding : winding, measured on 1–4 or 1–2
Resonance frequency of primary winding (1–2 or 1–10)
Voltage strength winding : winding (50 Hz, 1 s)
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DC/DC Converters
ER11
B78334A****A003
Published by EPCOS AG
Corporate Communications, P.O. Box 80 17 09, 81617 Munich, GERMANY
++49 89 636 09, FAX (0 89) 636-2 26 89
EPCOS AG 2003. Reproduction, publication and dissemination of this brochure and the informa-
tion contained therein without EPCOS’ prior express consent is prohibited.
Purchase orders are subject to the General Conditions for the Supply of Products and Services of
the Electrical and Electronics Industry recommended by the ZVEI (German Electrical and Electronic
Manufacturers’ Association), unless otherwise agreed.
This brochure replaces the previous edition.
For questions on technology, prices and delivery please contact the Sales Offices of EPCOS AG or
the international Representatives.
Due to technical requirements components may contain dangerous substances. For information on
the type in question please also contact one of our Sales Offices.
3
09/03
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