Datasheet

TSM108
12/13
12.2. Voltage and Current Control, Efficiency Performances using a PNP bipolar transistor
0 0.05 0.1 0.15 0.2 0.25
Iout (A)
0
1
2
3
4
5
6
7
Vout (V)
0%
10%
20%
30%
40%
50%
60%
70%
duty cycle on (%)
PNP transistor Rbase = 220 L=150µH
Vout & duty cycle versus Iout
Vin=12V, Vout=6V, Iout=200mA
0 0.05 0.1 0.15 0.2 0.25
Iout (A)
0%
10%
20%
30%
40%
50%
60%
70%
80%
Efficiency (%)
0%
10%
20%
30%
40%
50%
60%
70%
80%
duty cycle on (%)
PNP transistor Rbase = 220 L=150µH
Efficiency & duty cycle versus Iout
Vin=12V, Vout=6V, Iout=200mA
5 101520253035
Vin (V)
6.025
6.03
6.035
6.04
6.045
6.05
Vout (V)
60%
65%
70%
75%
80%
85%
Efficicency (%)
PNP transistor Rbase =220 L=150µH
Vout & Efficiency versus Vin
Vout = 6V, Iout = 200mA