Texas Instruments TPS54325, Руководство пользователя

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2.9 Start Up
The TPS54325EVM start up waveform is shown in Figure 2-8 .
EN(10 V/div)
V
O
(0.5 V/div)
PG(5 V/div)
400 µs/div
Figure 2-8. TPS54325EVM Start Up
2.10 Switching Frequency
The TPS54325EVM switching frequency is shown in Figure 2-9 .
V = 1.8 V
O
V = 3.3 V
O
f
- Switching F
requency - kHz
SW
V - Input Voltage - V
IN
900
800
700
600
500
0 5 10 15 20
SWITCHING FREQUENCY
VS
INPUT VOLTAGE
Figure 2-9. TPS54325EVM Switching Frequency
Test Setup and Results www.ti.com
8 TPS54325 Step-Down Converter Evaluation Module User's Guide SLVU300A – JUNE 2009 – REVISED OCTOBER 2021
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