Texas Instruments tps61040EVM-002, Руководство пользователя

Страница: 15 / 31

Start-up
2-5 Setup and Test Results
2.4 Start-up
When enabled, the EVM goes through its programmed three-stage soft-start
sequence to reduce inrush current at turnon. Figure 2−1 shows the startup
sequence of the EVM when powered from a 4.0-V Li-ion battery. The top
oscilloscope trace is the input current and the bottom trace is the output
current.
Figure 2−1. Start-up Waveforms
0.5 ms
100 mA
3
4
0.5 ms
10 mA
0.5 ms
5 mV
0.2 V
0.1 V
10 mV
1
2
3
4
BWL
AC
x10
DC
x10
DC
DC 3 DC 60 mA
500 kS/s
STOPPED