Texas Instruments TPS54386EVM, User Manual, Page: 13 / 23

5.4 Switch Node
Figure 5-4. TPS54386EVM Switching Waveforms V
IN
= 12 V, I
OUT
= 2 A Ch1: TP9 (SW1), Ch2: TP12 (SW2)
5.5 Control Loop Bode Plot (low line, V
IN
= 8 V)
f - Frequency - Hz
72
0
-72
100 1000
36
G
a
in
-
d
B
GAIN/PHASE
vs
FREQUENCY(V
OUT
= 5.0 V, I
OUT
= 2 A)
-36
10
Gain
Phase
-48
-60
-12
-24
24
12
60
48
90
-45
-180
P
h
a
s
e
-
°
-135
-90
0
45
0
GAIN/PHASE
vs
FREQUENCY(V
OUT
= 3.3 V, I
OUT
= 2 A)
f - Frequency - Hz
100 1000 10 0
100
20
-60
60
G
a
in
-
d
B
-20
-40
0
40
80
P
h
a
s
e
-
°
90
-45
-90
0
45
Gain
Phase
Figure 5-5. TPS54386EVM Gain and Phase vs Frequency
www.ti.com TPS54386EVM Typical Performance Data and Characteristic Curves
SLUU286A – MARCH 2008 – REVISED OCTOBER 2021
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TPS54x86 Step-Down Converter Evaluation Module User's Guide 13
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