Document 417-1
For Applications
up to 140 Watts
SMT Planar Transformers
The PL140 surface mount planar transformers are rated
for 140 Watts and are designed to operate between
200 kHz and 500 kHz. They are available in 15 turns
ratios and six different schematics, and may be special
ordered with an auxiliary winding.
Thesetransformersareidealforuseinhigh-currentpower
supply applications such as open loop intermediate bus
converters(IBC)andclosedloopvoltagemodeconverters.
Theyaredesignedforusewithnominal−48Vinput.Output
voltages depend on the turns ratio, duty cycle and circuit
topology.They offer high efficiency and feature excellent
DCR,verylowleakageinductanceand1500Vdcprimary
to secondary isolation.
Coilcraft can custom design planar transformers with
different turns ratios to meet your specific requirements.
Coilcraft Designer’s Kit C390 contains two samples
each of the parts shown in bold. To order, contact Coilcraft,
or visit http://order.coilcraft.com to purchase on-line.
Primary
turns
N1 N2 Schem. min (µH)
Primary
Leakage
Schematics
DCR max (mOhms)
Part
inductance2 inductance3
2
6
7
8
9
number1
max (µH)
Primary
Secondary
N1
1T
1T
1T
1T
3
PL140-100L_
PL140-101L_
PL140-102L_
4
9
5
4
–
5
–
6
A
B
A
B
A
C
D
C
D
C
E
F
E
F
E
120.0
152.0
188.0
227.0
270.0
120.0
152.0
188.0
227.0
270.0
120.0
152.0
188.0
227.0
270.0
0.35
0.35
0.35
0.35
0.45
0.35
0.35
0.35
0.50
0.60
0.35
0.35
0.35
0.35
0.45
12.0 (2-3), 12.0 (3-4)
32.8 (2-4)
20.8 (2-3), 20.8 (3-4)
48.8 (2-4)
4.0 (6-10)
N2
4
A
4.0 (6-10)
4.0 (6-10)
4.0 (6-10)
4.0 (6-10)
1
Aux
(opt)
10
6
5
2
PL140-103L_ 11
PL140-104L_
6
28.0 (2-3), 28.0 (3-4)
1T
1T
1T
1T
PL140-105L_
PL140-106L_
PL140-107L_
4
9
5
4
–
5
–
6
12.0 (2-3), 12.0 (3-4)
32.8 (2-4)
20.8 (2-3), 20.8 (3-4)
48.8 (2-4)
0.5 (6-7), 0.5 (9-10)
0.5 (6-7), 0.5 (9-10)
0.5 (6-7), 0.5 (9-10)
0.5 (6-7), 0.5 (9-10)
0.5 (6-7), 0.5 (9-10)
7
N1
4
1
8
B
9
Aux
PL140-108L_ 11
(opt)
10
5
2
PL140-109L_
6
28.0 (2-3), 28.0 (3-4)
6
PL140-110L_
PL140-111L_
PL140-112L_
4
9
5
4
–
5
–
6
12.0 (2-3), 12.0 (3-4)
32.8 (2-4)
20.8 (2-3), 20.8 (3-4)
48.8 (2-4)
1.0 (6-8), 1.0 (9-10)
1.0 (6-8), 1.0 (9-10)
1.0 (6-8), 1.0 (9-10)
1.0 (6-8), 1.0 (9-10)
1.0 (6-8), 1.0 (9-10)
N1
N2
1T
1T
3
7
C
4
1
9
Aux
PL140-113L_ 11
PL140-114L_
(opt)
10
5
2
6
28.0 (2-3), 28.0 (3-4)
6
1T
1T
1. When ordering, please specify packaging code:
PL140-114LD
Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic tape (200 parts per full reel).
N1
7
D
E
4
1
9
Aux
(opt)
10
5
2
B = Less than full reel. In tape, but not machine ready. To have a leader and trailer added ($25 charge), use
6
7
code letter D instead.
N1
N2
1T
1T
To order a transformer with an optional auxiliary winding, add an “X” and the turn count after the PL140, e.g. PL140X3-100LB.
Turn counts of 2, 3, 4, 5, 7 and 9 are available for the auxiliary winding. Transformers with auxiliary windings are not stocked.
2. Inductance measured on an Agilent/HP 4284 between pins 2 and 4 at 200 kHz, 0.1 Vrms, 0 Adc.
3. Leakage inductance measured between pins 2 and 4 at 100 kHz, 0.1 Vrms, 0 Adc with all secondary pins shorted.
4. Storage and ambient operating temperature range: –40°C to +85°C.
3
4
1
8
9
Aux
1T
(opt)
5
2
10
6
5. Electrical specifications at 25°C.
1T
1T
N1
7
F
4
1
8
9
Aux
1T
(opt)
5
10
Document 417-1 Revised 03/11/11