PRELIMINARY DATASHEET
BCM384 x 480T325A00
No Load Power Dissipation vs Line
Full Load Efficiency vs Temperature
14
12
10
8
97
96.5
96
95.5
95
6
4
2
94.5
0
94
-60
355 360 365 370 375 380 385 390 395 400 405
Input Voltage
-40
-20
VIN
0
20
40
60
80
100
120
Case Temperature (ºC)
360
TCASE
:
-40
25
100
:
384
400
Figure 1 — No load power dissipation vs. VIN ; TCASE
Figure 2 — Full load efficiency vs. temperature; VIN
Efficiency & Power Dissipation -40°C Case
Efficiency & Power Dissipation 25ºC Case
98
96
94
92
90
88
86
84
82
80
21
19
17
15
13
11
9
95
17
15
13
η
90
η
85
80
1
1
PD
PD
75
9
7
5
70
65
60
0
1
2
3
4
5
6
7
8
0
1
2
3
4
5
6
7
8
Output Load (A)
Output Load (A)
VIN
:
360
384
400
360
384
400
VIN
:
360
384
400
360
384
400
Figure 3 — Efficiency and power dissipation at -40°C (case); VIN
Figure 4 — Efficiency and power dissipation at 25°C (case); VIN
Efficiency & Power Dissipation 100ºC Case
Rout vs Case Temperature
98
20
240
220
200
180
160
140
120
100
96
18
η
94
16
14
92
90
PD
12
88
10
86
8
84
6
4
82
80
-60
-40
-20
0
20
40
60
80
100 120
0
1
2
3
4
5
6
7
8
Temperature (ºC)
Output Load (A)
I OUT
:
0.7
7.05
VIN
:
360
384
400
360
384
400
Figure 5 — Efficiency and power dissipation at 100°C (case); VIN
Figure 6 — ROUT vs. temperature vs. IOUT
Rev. 1.9
4/2011
Page 6 of 18
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