Gold Solo Double Twitter Installation Guide
MAN-G-SOLTWIB_160 (Ver. 1.005)
|
Heat Dissipation|
www.elmomc.com
80
Table of Contents
9.2.2.
How to Use the Chart
The charts above are based upon the theoretical worst-case scenario. The actual test results display
a 20% -30% lower power dissipation.
The above charts indicate the net power conversion losses and exclude the control losses.
To determine if your application heat dissipation requires a heat sink:
1.
Determine the power dissipation according to the "continuous current" and the DC bus
voltage curve.
If the DC bus is not one of the three curves above, estimate the dissipation by interpolation.
The estimation error is not critical.
2.
The chart is calculated for continuous current operation, if the actual operation is pulsed
current, add 25% to 30% to the power dissipation of the average (RMS) current.
3.
When the Heat-
Sink temperature reaches ≈ 85
°
C, the Gold Solo Double Twitter will shut
down.
Design the system for continuous operation so that the maximum Heat Sink temperature
should be no higher than between 80
°
C to 82
°
C.
4.
If the average heat dissipation is less than ≈4W to 5W (Average operating power of 300W to
600W) there will be no requirement for an additional external heat sink.
If the average Heat dissipation is higher than 4W then an additional heat dissipation means
is required, usually by connecting to an additional external heat-sink.
5.
When an external Heat-Sink is required, calculate the thermal resistance of the heat sink
according to:
∅
℃
/
𝑊𝑊
=
80℃ − 𝑇𝑇
𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴
𝐻𝐻𝐻𝐻𝐻𝐻𝐻𝐻
𝐷𝐷𝐷𝐷𝐷𝐷𝐷𝐷𝐷𝐷𝐷𝐷𝐻𝐻𝐻𝐻𝐷𝐷𝐷𝐷𝐷𝐷
