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P035_20W-150W_Planar Transformer_en0 pages
DESIGN GUIDE | P l a n a r Tr a n s f o r m e r s & I n d u c t o r s
SIZE P035
Power Range 20W-150W
“Application Engineering Experts”
CUSTOM IS S TA N D A R D
:: DESIGN EXAMPLES ::
Design Input
Pri. Np Sec. I Out. Sec. Ns1
Example Voltage Turns Ns1 Max (2) Turns
Part #
VDC
(Pins) VDC ADC
(Pins)
1124-1
36 - 75
12
3
30
2
1124-2
1124-3
18 - 36
6
3
30
2
36 - 75
12
3
30
2
1124-4
1124-5
18 - 36
6
3
30
2
36 - 75
12
5
20
3
1124-6
18 - 36
6
5
20
1124-7
36 - 75
12
5
1124-8
18 - 36
6
1124-9
36 - 75
12
1124-10 18 - 36
6
1124-11 36 - 75
12
1124-12 18 - 36
6
Sec. Sec. Height
Ns2 Ns2 mm (in) (1)
VDC Turns Typ.
-
-
7.6 (0.300”)
-
-
7.6 (0.300”)
12
8
8.1 (0.320”)
12
8
8.1 (0.320”)
-
-
7.6 (0.300”)
3
-
-
7.6 (0.300”)
20
3
12
8
8.1 (0.320”)
5
20
3
12
8
8.1 (0.320”)
12
8
8
-
-
7.6 (0.300”)
12
8
8
-
-
7.6 (0.300”)
12
8
8
12
8
8.1 (0.320”)
12
8
8
12
8
Highlights
•t Patented (U.S. PAT. 7,129,809) design with superior
thermal management
•t High efficiency (low losses), ultra compact, low-profile
•t Great co-planarity of terminals due to patented header
offering repeatable height
•t Excellent solderability (Pb-free or Pb/Sn Solder)
•t Standard sizes / customer configurations
•t Quick custom turn-around often without start-up or tooling costs
•t Inductors available for design in all packages
8.1 (0.320”)
Customize beyond these examples!
Rated power 20W-150W / Frequency range 200-400kHZ
Surface mount (SMD) or through hole (TH)
Topology - Half-Bridge, Forward (w/active rest), Flyback
Current rating max. SMD=20A, TH = +30%
Isolation voltage pri-sec/pri-core 500-2,000VDC
Soft switching, single or multiple outputs
Different switching frequencies, input/output voltages
Primary turns - other number (no fractions)
Secondary Ns1, Ns2 / Ns3 turns 1- 8 (no fractions)
Thermal solutions heat sinks, etc.
Notes: Full electrical, thermal, and efficiency calculations available upon request 1) Length (L) may
vary depending on terminals. Height (H) may vary depending on input / output requirements. 2)
Estimated value for normal conditions. Current rating can be up to 30% higher for through hole
applications.
SURFACE MOUNT DESIGN
8.6 mm max
19.8 mm
PCB Pad Layout
All Pad dimensions tolerance +/- 0.1
29.2
14 pl.
8.4
2.3
5.1
26.7 mm
2.5
C /L
2.5
5.1
U.S. PAT. 7,129,809
8.4
5.0
Notes
1. Dimensions are in mm
4. Header: LCP, natural color
2. Drawing not to scale
5. Pins: Copper
3. Tolerance +/- 2% unless noted 6. Pin Finish: Tin (Sn) over Nickel (Ni)
These models are for reference only and may NOT exactly match the design examples provided.
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