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PTB48500 Datasheet(PDF) 6 Page - Texas Instruments

Part No. PTB48500
Description  Dual-Output, 48-V Input Isolated DC/DC Converter for xDSL
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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PTB48500 Datasheet(HTML) 6 Page - Texas Instruments

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For technical support and further information visit http://power.ti.com
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:
Load current is increased proportionally from both outputs, up to the respective maximum value of each output.
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.
Typical Characteristics
PTB48501A Characteristic Data (See Note A)
Efficiency vs Load Current
(See Note B)
Power Dissipation vs Load Current
(See Note B)
Safe Operating Area PTB48501A (See Note C)
VIN =48 VDC (See Note B)
Cross Regulation,
∆∆∆∆∆Vox vs Ioy @Iox =1 A & VIN =48 V
PTB48501
Dual-Output, 48-V Input Isolated
DC/DC Converter for xDSL
20
30
40
50
60
70
80
90
0
8
16
24
32
Output Power (W)
400LFM
200LFM
100LFM
Nat conv
Airflow
50
60
70
80
90
100
03
69
12
15
18
Io
1 + Io2 (A)
36 V
48 V
75 V
V
IN
0
2
4
6
8
10
12
03
69
12
15
18
Io
1 + Io2
(A)
48 V
36 V
75 V
SLTS218B - SEPTEMBER 2003 - REVISED NOVEMBER 2004
-6
-4
-2
0
2
4
6
0
246
8
10
12
Io
1 : Io2 (A)
Vo
1 vs Io2
Vo2 vs Io1


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