Datasheet

Loop Characteristics
2-10
2.7 Loop Characteristics
The TPS54x72EVM−222 loop respnse characteristics are shown in Figure
2−12 through Figure 2−17. Gain and phase plots are shown for each device
at minimum and maximum operating voltage.
Figure 2−12. Measured Loop Response, TPS54672, V
I
= 3 V
−60
−50
−40
−30
−20
−10
0
10
20
30
40
50
60
100 1 k 10 k 100 k 1 M
−180
−150
−120
−90
−60
−30
0
30
60
90
120
150
180
Phase
Gain
Gain − dB
f − Frequency − Hz
MEASURED LOOP RESPONSE
Phase − Degrees
V
I
= 3 V
Figure 2−13. Measured Loop Response, TPS54672, V
I
= 6 V
−60
−50
−40
−30
−20
−10
0
10
20
30
40
50
60
100 1 k 10 k 100 k 1 M
−180
−150
−120
−90
−60
−30
0
30
60
90
120
150
180
Phase
Gain
Gain − dB
f − Frequency − Hz
MEASURED LOOP RESPONSE
V
I
= 6 V
Phase − Degrees