PI3740-00 Datasheet, PDF (32/48 Pages) Vicor Corporation – Parallel capable with single wire current sharing

Evaluation Board Thermal De-rating
Thermal de-rating curves are provided that are based on
component temperature changes versus load current, input
voltage and no air flow. It is recommended to use these curves as
a guideline for proper thermal de-rating. These curves represent
the entire system and are inclusive to both the Vicor SiP and
the external inductor. Maximum thermal operation is limited
by either the MOSFETs or inductor depending upon line and
load conditions.
All thermal testing was performed using a 3in. x 3in., four
2oz. copper layers, FR4 evaluation board platform. Thermal
measurements were made on the four internal MOSFETS and the
external inductor.
8
7
6
5
4
3
2
1
0
25 35 45 55 65 75 85 95 105 115
Ambient Temperature (°C)
8V_IN
12V_IN
28V_IN
36V_IN
16V_IN
48V_IN
18V_IN
60V_IN
24V_IN
Figure 49 — Thermal de-rating for PI3740-00 evaluation board
at V_OUT = 10V, 0LFM
8
7
6
5
4
3
2
1
0
25 35 45 55 65 75 85 95 105 115
Ambient Temperature (°C)
8V_IN
12V_IN
28V_IN
36V_IN
16V_IN
48V_IN
18V_IN
60V_IN
24V_IN
Figure 50 — Thermal de-rating PI3740-00 evaluation board
at V_OUT = 12V, 0LFM
PI3740-00
7
6
5
4
3
2
1
0
25 35 45 55 65 75 85 95 105 115
Ambient Temperature (°C)
8V_IN
12V_IN
28V_IN
36V_IN
16V_IN
48V_IN
18V_IN
60V_IN
24V_IN
Figure 51 — Thermal de-rating for PI3740-00 evaluation board
at V_OUT = 18V, 0LFM
6
5
4
3
2
1
0
25 35 45 55 65 75 85 95 105 115
Ambient Temperature (°C)
8V_IN
12V_IN
28V_IN
36V_IN
16V_IN
48V_IN
18V_IN
60V_IN
24V_IN
Figure 52 — Thermal de-rating for PI3740-00 evaluation board
at V_OUT = 24V, 0LFM
Cool-Power^® ZVS Switching Regulators
Page 32 of 48
Rev 1.4
04/2017
vicorpower.com
800 927.9474