22 | MiniMod 4 | User guide
14 : 4. Thermal Limiter THR
Thermal limiter monitors TEMPMON12-34 signals coming from the modules connected to each output connector of evaluation
board. Once TEMPMON signal matches the threshold set, the limiter starts reducing input signal of related couple of channels.
Threshold of thermal limiter must be setup adjusting the switches of “TEMP LIMIT VOLTAGE SELECTOR” as described in the
table below. Threshold will be the same for all channels.
TEMP LIMIT VOLTAGE SELECTOR
1
2
3
4
5
6
7
8
Threshold ID
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
g
OFF
ON
ON
OFF
OFF
OFF
OFF
OFF
f
OFF
ON
ON
ON
OFF
OFF
OFF
OFF
e
OFF
ON
ON
ON
ON
OFF
OFF
OFF
d
OFF
ON
ON
ON
ON
ON
OFF
OFF
c
OFF
ON
ON
ON
ON
ON
ON
OFF
b
OFF
ON
ON
ON
ON
ON
ON
ON
a
1
5
3
7
2
6
4
8
ON
OFF
For Minimod4, heatsinked on a standard aluminum plate, the setup that guarantee operation continuity without any thermal shut
down intervention, are thresholds #c. Lower thresholds are allowed to be set, but additional precautions must be taken if it is
wanted to avoiding module going into a thermal shut down.
Plate Temperature (˚C)
TEMPMON12-34
Threshold ID
25
2.62
30
2.42
35
2.22
a
40
2.02
45
1.83
50
1.65
b
55
1.49
60
1.33
65
1.2
70
1.07
75
0.96
c
80
0.86
d
85
0.77
90
0.69
95
0.62
Tempmon vs. Temperature for Minimod4 (measured with a not-heatsinked amplifier)
Temperature is Measured on the metal plate underneath indicated point.
