Datasheet

TSM108
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12. Measured Performances
The few following curves show the measured per-
formances of TSM108 used in DC/DC step down
converter, either with a Pchannel MOSFET or with
a PNP bipolar transistor.
12.1. Voltage and Current Control, Efficiency Performances using a Pchannel MOSFET:
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
Iout (A)
0
1
2
3
4
5
6
7
Vout (V)
0%
10%
20%
30%
40%
50%
60%
70%
duty cycle on (%)
CV & CC Regulation - Switching duty cycle vs Iout
Vin = 12V, Vout = 6V, Iout = 600mA
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
Iout (A)
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Efficiency (%)
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
duty cycle on (%)
Converter efficiency & Switching duty cycle vs Iou
t
Vin = 12V, Vout = 6V, Iout = 600mA
5 1015202530 35
Vin (V)
5.992
5.993
5.994
5.995
5.996
5.997
5.998
5.999
6
6.001
Vout (V)
77%
78%
79%
80%
81%
82%
83%
84%
85%
86%
Efficiency (%)
Vout & Efficiency versus Vin
Vout = 6V, Iout = 600mA