6.1 Output Voltage Characteristics

The output voltage maintains a stable level for input voltages ranging from 5.5V to 24V while driven with 3W on the load. While some larger ripples can be seen in Figure 6-1, most noise is high-frequency switching noise, which can be eliminated using decoupling capacitors or other simple filtration methods. The average output voltage is slightly below the target voltage of 5V, though if higher accuracy is needed, this can be tuned using RFBB or adjusting the op amp DAC-reference.

Figure 6-1. Output Voltage - Buck Converter using AVR128DB Voltage Controlled Feedback Regulation