P055_50W-200W_Planar Transformer_en0 pages

DESIGN GUIDE Planar Transformers & Inductors

SIZE P055

Power Range 50W-200W

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Design Input Pri. Np Sec. I Out. Sec. Ns1

Example Voltage Turns Ns1 Max (2) Turns

Part# VDC (Pins) VDC ADC (Pins)

Sec. Sec. Height

Ns2 Ns2(3) mm(in)(1)

VDC Turns Typ.

1250-1 36-75 8 2.2 50

1250-2 18-36

1250-3 36-75 12 3.3 35

2.2 50

1250-6

1250-7"

1250-4 18-36 6 3.3 40

1250-5"" 36 - 75""" ¥ ¥ 56""

18 "36 """V ¥ 56""

36 - 75"""¥ i 2 "" 125"

1250-8 18 - 36""" 4" i 2 "" 12. 5"

1250-9" "266-356"" "48 28 ¥""

1256-l"6"266-356"" "48 48""" 2_.¥"

P055 ALTERNATE DESIGNS

1284-{""¥6"- 75 """l6 "-" i¥"

1 "284-2"" 18 -¥¥"""¥ "-" i¥"

1

.....

.....

.....

.....

.....

.....

.....

"12"

"24"

9.1 (0.360")

""9".l"("o".366")"

" ~9£(6.3&y)

" 9".6"(b".586;;)"

" 9".6"(b".586")"

""9".6"("o".386")"

" ~9£(6.3&y)

""9".6"("o".386")"

"T677 (6.420")

"i6"7(6.42"d"j

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. 3) Ns2 / Ns3 max. load current output after rectification by (turns) as follows: (8) = 2.5

A each, (7) = 3.0 A each, (6) = 3.5 A each, (5) = 4.5 A each, (4) = 5.75 A each, (3) = 7.5 Aeach, (2)

= 10.0 A each

Highlights

• Patented (U.S. PAT. 7,129,809) design with superior

thermal management

• High efficiency (low losses), ultra compact, low-profile

• Great co-planarity of terminals due to patented header

offering repeatable height

• Excellent solderability (Pb-free or Pb/Sn Solder)

• Standard sizes / customer configurations

• Quick custom turn-around often without start-up or tool-

ing costs

• Inductors available for design in all packages

Customize beyond these examples!

Rated power 50W-200W/ Frequency range 175-300kHZ

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.

SURFACE MOUNT DESIGN

9.0

6.0

3.0

C/L -

3.0

6.0

9.0

PCB Pad Layout

All Pad dimensions tolerance +/- 0.1

30.5

\|/14pl.

2.3

5.1

<->

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)

21.8 mm

n n n n n n

t=t; ig] (a) (nb) (a) ifB) (a

fiStandex

IEDER1

ELECTRONICS

U.S. PAT. 7,129,809

These models are for reference only and may NOT exactly match the design examples provided.

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