PRELIMINARY
Configuration Options
Configuration
Effective power density
Effective Junction-Board
thermal resistance
Effective Junction-Case
thermal resistance
Effective Junction-Ambient
thermal resistance 300LFM
Inboard
(1)
(Figure 21)
1400 W/in
3
2.1 擄C/W
1.1 擄C/W
6.5 擄C/W
Onboard
(1)
(Figure 22)
875 W/in
3
2.4 擄C/W
1.1 擄C/W
6.8 擄C/W
V鈥 Chip Pre-Regulator Module
Inboard with 0.25"
Pin Fins
(2)
546 W/in
3
2.1 擄C/W
N/A
5.0 擄C/W
Onboard with 0.25"
Pin Fins
(2)
437 W/in
3
2.4 擄C/W
N/A
5.0 擄C/W
Note:
(1) Surface mounted to a 2" x 2" FR4 board, 4 layers 2 oz Cu
(2) Pin Fin heat sink available as a separate item
21.5
0.85
22.0
0.87
32.0
1.26
32.0
1.26
4.0
0.16
6.3
0.25
INBOARD MOUNT
(V鈥 Chip recessed into PCB)
mm
in
ONBOARD MOUNT
mm
in
Figure 21鈥擨nboard
mounting 鈥?package K
Figure 22鈥擮nboard
mounting 鈥?package F
vicorpower.com
800-735-6200
V鈥 Chip Pre-Regulator Module
P048K048T24AL
Rev. 1.4
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