Product Datasheet/Mechanical Drawings

TO Series
SMPS Xfmr
Designed in conjunction with ON-Semi, the TO Series of
transformers work with the ON Semiconductor NCP1207 PWM
current-mode controller with quasiresonant (QR) switching
capability.
Standard designs for 5V and 12V single outputs in power
levels ranging from 25W to 85W will get your prototypes up
and running fast. Just contact ICE Components to request
samples or to discuss a custom version to meet your
specific requirement. Electrical Specifications
Part
Output Power
Vout
Iout max
LPRI
IPK
Input Bulk
Core
Number
Range (W)
(VDC)
(A)
(μH)
(A)
Cap (μF)
Type
TO-05300
25-30
5.0
6.0
471.4
1.80
68
EFD30
TO-05400
31-40
5.0
8.0
351.8
2.46
82
ER28
TO-05500
41-50
5.0
10.0
289.7
3.09
120
ER28
TO-05650
51-65
5.0
13.0
224.9
3.89
150
PQ32/20
TO-05800
66-80
5.0
16.0
182.9
4.81
180
ERL28
TO-12300
25-30
12.0
2.5
384.4
1.93
68
EF25
TO-12400
31-40
12.0
3.33
288.4
2.63
82
EFD30
TO-12600
41-60
12.0
5.0
194.4
3.97
120
ER28
TO-12850
61-85
12.0
7.1
139.5
5.55
180
ERL28
1.
2.
3.
4.
Measured at 100 kHz, 1 Vrms.
Electrical specifications at 25ºC.
Meets UL 94V-0.
Operating temperature range: -40ºC to +130ºC. Operating temperature is the
sum of ambient temperature plus temperature rise.
5. Transformer inductance values calculated using ON Semi-conductor’s “QR Inductance Calculation” spreadsheet, available at
http://www.onsemi.com/pub/collateral/QR IND CALC.xls. Certain design assumptions were necessary to develop core and bobbin choices:
A. Input bulk capacitor sized at 2 uF/W, rounded up to the first commercially
available value.
B. Universal input voltage, with 265 VAC as the upper limit. The lower limit
input voltage was adjusted to cause the input bulk capacitor value to be
a commercially available value.
C. Maximum switching frequency: 100 kHz.
D.
E.
F.
G.
Maximum duty cycle: <50%.
Efficiency set at 87%.
Output diode drop set at 0.4 V.
Turns ratios are as follows:
1. 5V: 1:0.08
2. 12V: 1:0.20
H. Estimated total drain capacitance set at 100 pF.
I. BMAX set at 0.250 T.
J. Wire sized for <40ºC temperature rise at low input line voltage and full output load at 25ºC.
6. Constructed using UL Class B insulation system.
7. Hi-Pot Test: 3750 VAC primary to secondary, and 2500 VAC windings to core.
Specifications subject to change without notice. 800.729.2099 tel
www.icecomponents.com 97
(04/08) TO-1
SMPS Xfmr
TO Series
Foot Print
Packaging Tray=24 pieces, Box=12 trays, Box=288 pieces
Mechanical - EFD30
37.0 max
15.5 max
7 3.0 +/- 0.5
6
SQ 0.64
units: mm
Mechanical - ER28
Packaging Tray=66 pieces, Box=5 trays, Box=330 pieces
30.5 max
29.5 max
1
Pri. 2
3.0 min
1
2
3
9
5
6
Mechanical - PQ32/20
dia 0.8
10
9
8
7
1
2
3
4
5
6
Sec.
11,12
6
6
11
7,8
3
5
Bias
Dot for pin 1
12
25.0
24.5 ma x
TO-XXXXX
YYWW
Foot Print
TOP VIEW
5.0
7
units: mm
Foot Print
Packaging Tray=40 pieces, Box=4 trays, Box=160 pieces
7.62
35.5 max
33.5 max
1
11
10
1
2
3
7,8,9
9 5 6
5.0
1
8
7
3
4
5
6
Sec.
7,8,9
Bias
TOP VIEW
units: mm
Foot Print
Packaging Tray=77 pieces, Box=5 trays, Box=385 pieces
20 max
Pri. 2
9,10
3
4
5
5
0.95X0.6
6
white dot for pin 1
Specifications subject to change without notice. www.icecomponents.com 10
9
8
7
6
3
4
5
12.7
30.0 max
TO-XXXXX
YYYW
5.08
c
Sec.
Bias
800.729.2099 tel
2
9
Dia 0.8
3 min
4
1
10
10,11,12
3
5
1
3
11
6
27.0 max
2
12
30.0
26.0 max
2
6
Mechanical - EF25
1
Foot Print
38.5 max
3.0 MIN
5
6
units: mm
Packaging Tray=48 pieces, Box=5 trays, Box=240 pieces
TO-XXXXX
YYWW
3 9
5
5.08
6
Dot for pin 1
0.8 dia
31.5 max
2
4
TOP VIEW
Mechanical - ERL28
1
7
Sec.
Bias
Dot for pin 1
8
10,11,12
3
5
3.0 min
1 2 3
9
30.5
27.0 max
Pri. 2
TO-XXXXX
YYWW
12
6,7
1
2
TOP VIEW
5
units: mm
98
(04/08) TO-2