MGDS-150-H-B ETC2 [List of Unclassifed Manufacturers], MGDS-150-H-B Datasheet - Page 10

• Manufacturer Part Number: MGDS-150-H-B
• Description: Hi-Rel DC/DC CONVERTER
• Manufacturer: ETC2 [List of Unclassifed Manufacturers]

©
Gaia Converter FC02-009.08/06 Revision N
10- Thermal Characteristics (continued)
The two formulas (A) and (B) described in previous page :
conduct to curves determining the ambient temperature
admissible as a function of output power for various heat
transfert conditions.
• Pdiss = Pout(1/h h h h h - 1)
• Ta = 105°C - Rth(b-a) x Pdiss (B)
150
140
130
120
110
100
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
0
0
10
10
(A)
20
20
MGDS-150-H-x Series Thermal Curves
MGDS-150-O-x Series Thermal Curves
30
30
For locations, phone, fax, E-Mail see back cover
40
40
Ambient temperature (°C)
Ambient temperature (°C)
50
50
MGDM-150 Low Input Series
60
60
In particular, as example the following typical curves are
calculated with :
70
70
• no heatsink
• a Fischer Elektronik heatsink reference SKDC5159SA
and a Berquist «Silpad» for various cooling conditions.
80
80
90
90
100
100
110
110
no heatsink
no heatsink 200LFM
no heatsink 400 LFM
no heatsink 1000 LFM
heatsink
heatsink 200 LFM
heatsink 400 LFM
heatsink 1000 LFM
no heatsink
no heatsink 200LFM
no heatsink 400 LFM
no heatsink 1000 LFM
heatsink
heatsink 200 LFM
heatsink 400 LFM
heatsink 1000 LFM
Hi-Rel
Grade
4
10