TO-05300 Datasheet, PDF (1/2 Pages) ice Components, Ins. – SMPS Xfmr

SMPS Xfmr
ICE Components, Inc.
1165 Allgood Road Suite 20 Marietta, GA 30062
Voice: [phone]
Email: [e-mail]
Fax: [phone]
Web: www.icecomponents.com
TO Series
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.
E^Ele^Lct^Eri^Cca^Tl S^Rp^Iec^Cifi^Aca^Ltio^Sns^{P E C I F I C A T I O N S — S T A N D A R D S E R I E S}
Part
Number
TO-05300
TO-05400
TO-05500
TO-05650
TO-05800
TO-12300
TO-12400
TO-12600
TO-12850
Output Power
Range (W)
25-30
31-40
41-50
51-65
66-80
25-30
31-40
41-60
61-85
V_out
(V_DC)
5.0
5.0
5.0
5.0
5.0
12.0
12.0
12.0
12.0
I_out max
(A)
6.0
8.0
10.0
13.0
16.0
2.5
3.33
5.0
7.1
L_PRI
(µH)
471.4
351.8
289.7
224.9
182.9
384.4
288.4
194.4
139.5
I_PK
Input Bulk
(A)
Cap (µF)
1.80
68
2.46
82
3.09
120
3.89
150
4.81
180
1.93
68
2.63
82
3.97
120
5.55
180
Core
Type
EFD30
ER28
ER28
PQ32/20
ERL28
EF25
EFD30
ER28
ERL28
1. Measured at 100 kHz, 1 Vrms.
2. Electrical specifications at 25ºC.
3. Meets UL 94V-0.
4. Operating temperature range: -40ºC to +130ºC. Operating tem-
perature 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. Maximum duty cycle: <50%.
E. Efficiency set at 87%.
F. Output diode drop set at 0.4 V.
G. 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.
(10/06) TO-1