Texas Instruments TPS548A28, User Manual

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Frequency (Hz)
Gain (d
B)
Ph
ase
(Degree
s)
1000 2000 3000 5000 7000 10000 20000 30000 50000 100000 200000 300000 500000 1000000
-40 -200
-30 -150
-20 -100
-10 -50
0 0
10 50
20 100
30 150
40 200
50 250
60 300
70 350
80 400
Vin = 12 V
Vout = 2.5 V
800 kHz
VCC = Int
800 nH
Iout = 12 A
D018
Gain
Phase
Test Setup and Results
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10 SLVUBO0A – March 2020 – Revised May 2020
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Using the TPS54JA20EVM-023 12-A, Buck Converter Evaluation Module
2.6 Loop Characteristics
Figure 10 shows the TPS54JA20EVM loop-response characteristics. Gain and phase plots are shown for
V
IN
voltage of 12 V. Load current for the measurement is 100%.
Figure 10. TPS54JA20 Bode Plot