PTB48600A Datasheet, PDF (4/10 Pages) Texas Instruments – 85 W Dual Complementary-Output DC/DC Converter for DSL

Not Recommended for New Designs
PTB48600 —48-V Input
Typical Characteristics
85 W Dual Complementary-Output
DC/DC Converter for DSL
SLTS239 JANUARY 2005
PTB48600A Characteristic Data @V_IN =48 V (See Notes A)
Safe Operating Area PTB48600A (See Note C)
Efficiency vs Load Current (See Note B)
90
80
V_I
70
36 V
48 V
60 V
60
72 V
50
40
0
2
4
6
8
|±I_O| – Balanced Output Current – A
Power Dissipation vs Load Current (See Note B)
20
16
V_I
12
72 V
60 V
48 V
8
36 V
4
0
0
1.5
3
4.5
6
7.5
|±I_O| – Balanced Output Current – A
Cross Regulation, ∆|+V_O| vs |–I_O|, with |+I_O| = 1 A
400
Balanced Load, V_I =48 VDC (See Note B)
90
80
70
Airflow
400LFM
60
200LFM
100LFM
50
Nat conv
40
30
20
0
1.5
3
4.5
6
7.5
|±I_O| – Output Current – A
200
0
-200
-400
0
1.5
3
4.5
6
7.5
|-I_O| – Output Current – A
Cross Regulation, ∆|–V_O| vs |+I_O|, with |–I_O| = 1 A
400
200
0
-200
-400
0
1.5
3
4.5
6
7.5
|+I_O| – 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 1 oz. copper.
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