GA3544-BL

Document 789-1
Flyback Transformer
For Texas Instruments UCD3K
Digital Power Controller
• Specified by Texas Instruments for use in the Bias Power
Supply for their UCD3K Digital Power Controller
• Universal input; 5 Watt output
• 3000 Vrms, one minute isolation Pri and P1 to S1 and
Sense; 1500 Vrms, one minute isolation windings to core
• Designed to meet UL/CSA/IEC 60950 Reinforced Insulation
Class; 3.0 mm creepage and clearance.
Core material Ferrite
Terminations RoHS compliant tin-silver over tin over copper. Other
terminations available at additional cost.
Weight 13.4 g
Ambient temperature –40°C to +85°C
Storage temperature Component: –40°C to +85°C.
Tray packaging: –40°C to +80°C
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 100 per tray
PCB washing Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf.
Part
number
InductanceInductance
Leakage
at 0 A1
at Ipk2
DCR max
inductance
±10% (mH)
(mH)
(Ohms)
max (µH)3
Turns ratio
Pri : S1 : P1 : Sense
Ipk2
(A)
Output
0.860 (Pri)
17.6
1 : 0.158 : 0.158 : 0.079
0.3
0.131 (P1)
0.109 (S1)
0.155 (Sense)
GA3544-BL
2.3
1.61
1. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc using an Agilent/
HP 4263B impedance analyzer or equivalent.
2. Peak primary current drawn at minimum input voltage.
3. Leakage inductance is for the primary and is measured with the secondary shorted.
4. Electrical specifications at 25°C.
12 V, 0.2 A (S1)
12 V, 0.2 A (P1)
Dot indicates pin 1
0.680 max
17,30
0.110
min
2,79
3
Vaux
primary
(P1)
4
1
Pri
2
7
6
8
0.197
5,0
0.590
15,0
Vin
monitor
(Sense)
Vaux
secondary
(S1)
5
0.025
0,64
0.830
21,1
4
1
5
0.590
15,0
8
0.197
5,0
0.830 max
21,1
1
8
inches
Dimensions are in
mm
4
0.048
∅
1,2
5
Recommended
PC Board Layout
Document 789-1 Revised 11/19/15