PTB48580A Datasheet, PDF (4/13 Pages) Texas Instruments – Dual Complementary-Output DC/DC Converter for DSL

PTB48580A
Dual Complementary-Output
DC/DC Converter for DSL
Not Recommended for New Designs
Typical Characteristics
SLTS240 DECEMBER 2004
PTB48580A Characteristic Data @V_I =48 V (See Notes A)
Safe Operating Area PTB48580A (See Note C)
Efficiency vs Load Current (See Note B)
90
80
70
60
50
40
0
0.5
1
1.5
2
2.5
3
|±I_O| – Balanced Output Current – A
Power Dissipation vs Load Current (See Note B)
6
5
4
3
2
1
0
0
0.5
1
1.5
2
2.5
3
|±I_O| – Balanced Output Current – A
Cross Regulation, ∆|+V_O| vs |–I_O|, with |+I_O| = 1 A
300
200
100
0
-100
-200
-300
0
0.5
1
1.5
2
2.5
3
|–I_O| – Output Current – A
Cross Regulation, ∆|–V_O| vs |+I_O|, with |–I_O| = 1 A
300
200
100
0
-100
-200
-300
0
0.5
1
1.5
2
2.5
3
|+I_O| – Output Current – A
Balanced Load, V_I =48 VDC (See Note B)
90
80
70
Airflow
400LFM
60
200LFM
100LFM
50
Nat conv
40
30
20
0
0.5
1
1.5
2
2.5
3
|±I_O| – Balanced Output Current – A
Note A: Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the converter.
Note B: Under a balanced load, current flowing out of +V_O is equal to that flowing into –V_O.
Note C: SOA curves represent the conditions at which internal components are at or below the manufacturer’s maximum operating temperatures. Derating limits apply to
modules soldered directly to a 4 in. × 4 in. double-sided PCB with 2 oz. copper.
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