5.4 Switch Node
Figure 5-4. TPS54383EVM 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)
0
1.5
Frequency - Hz
0.5
1.0
2.0
PHASE/GAIN
vs
FREQUENCY (TPS54283 Loop Response)
G
a
in
-
d
B
5.035
5.015
5.000
4.985
5.020
5.030
5.010
4.990
4.995
5.035
5.015
5.000
4.985
5.020
5.030
5.010
4.990
4.995
P
h
a
s
e
-
d
e
g
re
e
s
3.3 V
Phase
5.0 V
Phase
5.0 V
Gain
3.3 V
Gain
Figure 5-5. TPS54383EVM Gain and Phase vs Frequency
TPS54383EVM Typical Performance Data and Characteristic Curves
14
TPS54383 Step-Down Converter Evaluation Module User's Guide
SLUU285D – JULY 2007 – REVISED OCTOBER 2021
Copyright © 2021 Texas Instruments Incorporated
