Document 417-1
SMT Planar Transformers
For Applications
up to 140 Watts
The PL140 surface mount planar transformers are rated
for 140 Watts and are designed to operate at frequencies as high as 500 kHz. They are available in 15 turns
ratios and six different schematics.
These transformers are ideal for use in high-current
power supply applications such as open loop intermediate
bus converters (IBC) and closed loop voltage mode
converters. They are designed for use with nominal −48 V
input. Output voltages depend on the the turns ratio, duty
cycle and circuit topology. They offer high efficiency and
feature excellent DCR, very low leakage inductance and
1500 Vdc primary to secondary isolation.
Coilcraft can design custom planar transformers with
different turns ratios and with an auxiliary winding to
meet your specific requirements.
Part
number1
PL140-100_
PL140-101_
PL140-102_
PL140-103_
PL140-104_
PL140-105_
PL140-106_
PL140-107_
PL140-108_
PL140-109_
PL140-110_
PL140-111_
PL140-112_
PL140-113_
PL140-114_
Primary
Primary
Leakage
turns
inductance2 inductance3
N1 N2 Schem. min (µH)
max (µH)
4
4
A
120.0
0.35
9
B
152.0
0.35
5
5
A
188.0
0.35
11
B
227.0
0.35
6
6
A
270.0
0.45
4
4
C
120.0
0.35
9
D
152.0
0.35
5
5
C
188.0
0.35
11
D
227.0
0.50
6
6
C
270.0
0.60
4
4
E
120.0
0.35
9
F
152.0
0.35
5
5
E
188.0
0.35
11
F
227.0
0.35
6
6
E
270.0
0.45
DCR max (mOhms)
Primary
Secondary
12.0 (2-3), 12.0 (3-4) 4.0 (6-10)
32.8 (2-4)
4.0 (6-10)
20.8 (2-3), 20.8 (3-4) 4.0 (6-10)
48.8 (2-4)
4.0 (6-10)
28.0 (2-3), 28.0 (3-4) 4.0 (6-10)
12.0 (2-3), 12.0 (3-4) 0.5 (6-7), 0.5 (9-10)
32.8 (2-4)
0.5 (6-7), 0.5 (9-10)
20.8 (2-3), 20.8 (3-4) 0.5 (6-7), 0.5 (9-10)
48.8 (2-4)
0.5 (6-7), 0.5 (9-10)
28.0 (2-3), 28.0 (3-4) 0.5 (6-7), 0.5 (9-10)
12.0 (2-3), 12.0 (3-4) 1.0 (6-8), 1.0 (9-10)
32.8 (2-4)
1.0 (6-8), 1.0 (9-10)
20.8 (2-3), 20.8 (3-4) 1.0 (6-8), 1.0 (9-10)
48.8 (2-4)
1.0 (6-8), 1.0 (9-10)
28.0 (2-3), 28.0 (3-4) 1.0 (6-8), 1.0 (9-10)
Schematics
6
2
N1
1T
7
3
A
N2
1T
4
8
1T
1
Aux
(opt)
9
1T
10
5
6
2
1T
N1
B
7
1T
8
4
1T
1
Aux
(opt)
9
1T
10
5
2
N1
C
3
6
1T
7
N2
4
1
9
Aux
(opt)
1T
N1
1T
10
5
2
1. When ordering, please specify packaging code:
2.
3.
4.
5.
PL140-114D
Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic tape (200 parts per full reel).
B = Less than full reel. In tape, but not machine ready. To have a leader and trailer added ($25 charge), use
code letter D instead.
Inductance measured on an Agilent/HP 4284 between pins 2 and 4 at 200 kHz, 0.1 Vrms, 0 Adc.
Leakage inductance measured between pins 2 and 4 at 100 kHz, 0.1 Vrms, 0 Adc with all secondary pins shorted.
Storage and ambient operating temperature range: –40°C to +85°C.
Electrical specifications at 25°C.
D
6
7
4
1
9
Aux
(opt)
1T
N1
1T
10
5
6
2
E
7
3
N2
1T
4
1
Aux
(opt)
8
9
1T
10
5
2
6
1T
F
N1
1T
4
1
5
Specifications subject to change without notice.
Please check our website for latest information.
© Coilcraft, Inc. 2007
Document 417-1
7
Aux
(opt)
8
9
1T
10
Revised 11/06/07
