Datasheet

V
OUT
(10 mV/Div)
V
SW
(2V/Div)
V
OUT
(10 mV/Div)
Performance Characteristics www.ti.com
Figure 4 shows the output voltage ripple. This measurement was taken with the scope probe tip placed on
the output capacitor C9 VOUT connection and the scope probe ground "barrel" wired to the GND
connection of C9. The scope bandwidth is set to 20 MHz.
Figure 4. Output Ripple Waveform (2 µs/DIV)
Figure 5 shows the typical SW pin voltage with the output current set to 10A.
Figure 5. Primary Switch Node Waveform (400 ns/DIV)
8
AN-2130 LM21215 Evaluation Board SNVA476A–March 2011–Revised May 2013
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