C1173-AL Datasheet, PDF (1/1 Pages) Coilcraft lnc. – Flyback Transformers

Document 439
Flyback Transformers ForTexasInstrumentsTPS23750
PoE Powered Device Controller
• Isolated synchronous flyback transformers developed for
Texas Instruments PMP929 reference design.
• Operates up to 500 kHz with 18 – 72 V input
• 1500 Vrms isolation primary and bias to secondary windings
Core material Ferrite
Terminations RoHS tin-silver over tin over nickel over phos
bronze. Other terminations available at additional cost.
Weight 5.0 – 5.3 g
Ambient temperature –40°C to +125°C
Storage temperature Component: –40°C to +125°C.
Packaging: –40°C to +80°C
Resistance to soldering heat Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging 200 per 13″ reel Plastic tape: 44 mm wide,
0.35 mm thick, 28 mm pocket spacing, 9.6 mm pocket depth
PCB washing Only pure water or alcohol recommended
L at 0 A² L at Ipk³
Part ±10% min
DCR max (Ohms)
number¹ (µH) (µH) pri sec⁴ drive bias
Leakage L⁵
max (µH)
Turns ratio
Ipk³
pri drive pri:sec⁶ pri:drive pri:bias (A)
Output⁷
Drive
output
C1173-AL_ 166.5 150.0 0.770 0.020 0.523 1.12 2.50 0.400 6.5:1 3.7:1 2.0:1 1.2 3.3 V, 3 A 5.6 V, 10 mA
C1174-AL_ 150.0 135.0 0.515 0.023 0.570 0.88 2.00 0.400 5.0:1 3.2:1 2.25:1 1.2 5.0 V, 2 A 7.5 V, 10 mA
1. When ordering, please specify packaging code:
C1174-ALD
Packaging: D = 13″ machine ready reel. EIA-481 embossed plastic
tape (200 per full reel).
B = Less than full reel. In tape, but not machine ready. To
have a leader and trailer added ($25 charge), use
code letter D instead.
2. Inductance is for the primary, measured at 100 kHz, 0.1 Vrms.
3. Peak primary current drawn at minimum input voltage.
4. DCR for secondary is with windings connected in parallel.
5. Leakage inductance for the primary is with the secondary and drive
windings shorted; leakage inductance for the drive winding is with the
secondary windings shorted.
6. Turns ratio is with both secondary windings connected in parallel.
7. Output of the secondary is with the windings connected in parallel. Bias
winding output is 10 V, 20 mA.
8. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Dot indicates pin 1
1
0.677 _max
17,20
YYXXXX-AL
6
0.865
21,97
max
0.335
8,51
max
0.079
2,01
0.590
14,98
0.693
17,60
0.028
0,72
12
0.135
3,43
1
0.665
16,88
0.07
1,79
12
7
0.098
2,5
Recommended
Land Pattern
0.098
2,5
0.004 /0,10
3
Primary
12
11
Secondary
5
9
10
2
8
Bias
Drive
1
7
The secondary windings are to be
connected in parallel on the PC board.
Dimensions are in
inches
mm
Specifications subject to change without notice.
Please check our website for latest information.
Document 439 Revised 10/28/08
© Coilcraft, Inc. 2009