Texas Instruments TPS55340EVM-017, User Manual, Page: 7 / 22

I
L
(1.00 A/div)
SW (20.0 V/div)
V
OUT
AC Coupled (100 mV/div)
Timebase (1.00 µs/div)
100 1000 10000 100000 1000000
−60
−40
−20
0
20
40
60
−180
−120
−60
0
60
120
180
Frequency (Hz)
Gain (dB)
Phase (°)
VIN = 5V Gain
VIN = 5V Phase
VIN = 12V Gain
VIN =12V Phase
G006
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Test Setup and Results
7 SLVU668B – April 2012 – Revised July 2019
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TPS55340EVM-017, 5-V to 12-V Input, 24-V Output Boost Evaluation Module
4.6 Loop Characteristics
Figure 6 shows the EVM loop-response characteristics. Gain and phase plots are shown for V
IN
voltages
of 5 V and 12 V with load currents of 800 mA and 1.9 A, respectively.
Figure 6. TPS55340EVM-017 Loop Response
4.7 Output Voltage Ripple
Figure 7 shows the EVM output voltage ripple and inductor current ripple. The output current is the rated
full load of 800mA and V
IN
= 5 V. The ripple voltage is measured directly across the output capacitors.
Figure 7. TPS55340EVM-017 V
IN
= 5-V Output Ripple