Texas Instruments Evaluation Module for TPS5401 0.5A Step-Down SWIFT Converter TPS5401EVM-708 TPS5401EVM-708 데이터 시트
제품 코드
TPS5401EVM-708
PH = 20 V / div
V = 100 mV / div (ac coupled)
IN
Inductor Current = 100 mA / div
Time = 1 µsec / div
V = 20 V / div
IN
V
= 2 V / div
OUT
EN = 2 V / div
Time = 5 msec / div
Test Setup and Results
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Figure 8. TPS5401EVM-708 Input Ripple
2.9
Powering Up
The start-up waveforms are shown in
. In
, the top trace shows V
OUT
, and the bottom
trace shows V
IN
. The input voltage is initially applied, and when the input reaches the undervoltage lockout
threshold, the start-up sequence begins and the output ramps up at the externally set slow start rate
toward the set value of 5 V. The input voltage for these waveforms is 24 V.
toward the set value of 5 V. The input voltage for these waveforms is 24 V.
Figure 9. TPS5401EVM-708 Start-Up Relative to V
IN
8
TPS5401EVM-708 0.5-A, SWIFT™ Regulator Evaluation Module
SLVU430 – January 2011
© 2011, Texas Instruments Incorporated