PC500.C (3/03) 48
US 858 674 8100
••
UK 44 1483 401 700
••
France 33 3 84 35 04 04
••
Singapore 65 6287 8998
••
Taiwan 886 2 2698 0228
••
Hong Kong 852 2788 6588
••
http://www.pulseeng.com
TAPE & REEL LAYOUT
USER DIRECTION
OF FEED
.920
23,37
1.260
32,00
1.260
± .012
32,00
± 0,30
.157
4,00
.079
2,00
.069
1,75
.560
14,20
.050
1,27
.339
8,60
.378
9,60
.790
20,07
HIGH FREQUENCY PLANAR
TRANSFORMERS
Spyglass Series (up to 140W)
SUGGESTED PAD LAYOUT
.250
6,35
.800
20,32
61
7
11
.080
2,03
6XØ
.500
12,70
.110
2,79
5XØ
.180
4,57
.620
15,75
.400
10,16
.390
9,91
PA0XXX
Date Code
Country of Origin
.790
20,07MAX
6
.920
23,37MAX
.047
1,19
5XØSHAFT
.080
2,03
5XØFOOT
.032
0,81
6XØSHAFT
.050
1,27
6XØFOOT
1
7
11
.005/0,13
H*
*H - Maximum Height
(see table above)
1
6
9T (AUX)
PA0463
10T (PRI)
2
5
8
10
2T (SEC)
8
2
5
10
12T (PRI) 2T (SEC)
PA0168
8
2
4
9
6T (PRI) 1T (SEC)
PA0369
1
6
PA0423
2
5
7
11
4T (SEC)
4T (AUX)
8T (PRI)
8
2
5
10
8T (PRI) 2T (SEC)
PA0491
Mechanicals
Schematics
Power Rating: up to 140W
Height: 8.6mm Max
Footprint: 23.4mm x 20.1mm Max
Frequency Range: 200kHz to 700kHz
Part Power Turns Ratio Primary Primary Leakage DCR (mΩMAX) Maximum
Number Rating 1,4 (Pri:Sec) Secondary Inductance Inductance 2
Primary Primary Secondary Height
Isolation 3(µH MIN) (µH MAX) Aux. (mm)
PA0369 100W 6:1 1500 Vdc 65 0.25 15 N/A 0.40 8.6
48v to 3.3v/30A Basic
PA0168 100W 12:2 1500 Vdc 320 0.75 45 N/A 1.25 8.6
48v to 3.3v/30A Basic
PA0463 50W 10:2 1500 Vdc 200 1.00 40 2750 2.50 8.6
48v to 3.3v/15A (w/9T Pri. Aux.) Basic
PA0491 100W 8:2 1500 Vdc 140 0.25 35 N/A 1.25 8.6
48v to 5.0v/20A Basic
PA0423 140W 8:4 1500 Vdc 140 0.30 35 500 7.00 8.6
48v to 12v/11.7A (w/4T Pri. Aux.) Basic
Electrical Specifications @ 25°C — Operating Temperature -40°C to 125°C
Weight ..................11.0 grams
Tape & Reel...............180/reel
Tray.............................40/tray
Dimensions: Inches
mm
Unless otherwise specified,
all tolerances are ± .010
0,25
49 PC500.C (3/03)
US 858 674 8100
••
UK 44 1483 401 700
••
France 33 3 84 35 04 04
••
Singapore 65 6287 8998
••
Taiwan 886 2 2698 0228
••
Hong Kong 852 2788 6588
••
http://www.pulseeng.com
HIGH FREQUENCY PLANAR
TRANSFORMERS
Spyglass Series (up to 140W)
1. This series of transformers was designed for (but not limited to)
single and two switch forward converter applications. The
power levels stated are for actual demo boards typically operat-
ing between 200-400kHz with 100-200LFM of airflow. Other
turns ratios and auxiliary windings may be available. Please
contact Pulse Power Applications Engineering for details.
2. The leakage inductance is measured at the primary terminals
with all other windings shorted.
3. The listed transformers are designed to meet basic insulation
(1.4mm creepage and clearance with 1500Vdc isolation). Lower
cost transformers with operational insulation (1500Vdc isolation
with no creepage and clearance spacings) are available. Please
contact Pulse Power Applications Engineering for details.
4. To determine if the transformer is suitable for your application,
it is necessary to ensure that the temperature rise of the
component (ambieint plus temperature rise) does not exceed
its operating temperature. To determine the temperature rise
of the component it is necessary to calculate the total power
losses (core and copper) in the application.
Total Copper Losses (Pcu total(W)):
Pcu total(W) = sum of the losses in each winding
The losses in each winding can be calculated by:
Pcu(W) = .001* DCR(mΩ) * (Irms2)
Core Losses (Pcore(W))
To calculate core loss, use the following formula:
CoreLoss (W) = 1.589E-13 (∆B)2.5 * (Freq kHz)1.8
where:
∆B = 179211.46 * Vin min * Dutycycle max / (Freq kHz *
Primary Turns)
Total Losses:
P total = Pcu total + CoreLoss
Temperature Rise:
The approximate temperature rise can be found by looking
up the calculated total losses in the temperature rise vs.
power dissipation curve.
Notes from Tables
Temperature Rise vs. Power (W) Dissipation
Total Power (W) Dissipation
Temperature Rise
0
20
40
60
80
100
120
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