ZHCSPB0 april 2023 LM5171-Q1
ADVANCE INFORMATION
For digital solutions using PWM signals, an external two-stage RC filter is recommended to convert the PWM signal to a DC voltage feeding the ISET pin as shown in Figure 8-12. A two stage RC filter requires much smaller capacitance, and has a shorter delay time compared to a single stage filter. Please note, conversion errors occur if the PWM signal voltage levels are not well regulated.