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Performance Characteristics

4.3 Output Ripple Waveform

Figure 3 shows the output voltage ripple. This measurement was taken with the scope probe tip placed on

the J3 load terminal and the scope probe ground "barrel" pushed against the J4 load terminal. The scope

bandwidth is set to 20 MHz.

Bandwidth Limit = 20 MHz

Figure 3. Output Voltage Ripple

4.4 Primary Switchnode Waveform

Figure 4 shows the typical SW pin voltage while synchronizing to an external source.

Figure 4. Typical SW Pin Voltage

SNVA325B–May 2008–Revised May 2013 AN-1791 LM20333 Evaluation Board

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