Datasheet

20
30
40
50
60
70
80
90
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
T
A
(C)
I
OUT
(Amps)
18 V
24 V
36 V
48 V
60 V
C048
20
30
40
50
60
70
80
90
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
T
A
(C)
I
OUT
(Amps)
400 LFM
200 LFM
100 LFM
Nat Conv
C048
20
30
40
50
60
70
80
90
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
T
A
(C)
I
OUT
(Amps)
6 V
12 V
24 V
36 V
48 V
60 V
C047
20
30
40
50
60
70
80
90
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
T
A
(C)
I
OUT
(Amps)
8 V
12 V
24 V
36 V
48 V
60 V
C048
TPS54560
SLVSBN0A –MARCH 2013–REVISED MARCH 2014 www.ti.com
11 Layout
11.1 Safe Operating Area
The safe operating area (SOA) of the device is shown in Figure 58, through Figure 61 for 3.3 V, 5 V and 12 V
outputs and varying amounts of forced air flow. The temperature derating curves represent the conditions at
which the internal and external components are at or below the manufacturer’s maximum operating
temperatures. Derating limits apply to devices soldered directly to a double-sided PCB with 2 oz. copper, similar
to the EVM. Careful attention must be paid to the other components chosen for the design, especially the catch
diode. In most of these test conditions, the thermal performance is limited by the catch diode. When operating at
high duty cycles or at higher switching frequency the TPS54560’s thermal performance can become the limiting
factor.
Figure 58. 3.3V Outputs Figure 59. 5V Outputs
ƒsw = 800 kHz ƒsw = 800 kHz
Figure 60. 12V Outputs Figure 61. Air Flow Conditions
V
IN
= 36 V, V
O
= 12 V
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Product Folder Links: TPS54560