JAJSNC5 april 2023 LM5171-Q1
ADVANCE INFORMATION
To achieve the highest regulation accuracy over wider load range, the user must target to create 50-mV of VCS at full current. Therefore, RCS must be selected as Equation 78:
Ideally, a 1.5-mΩ current sense resistor must be chosen for this example. However, owing to availability, a standard non-inductive 1-mΩ current sense resistor is selected, namely,
Wide terminal chip resistors are recommended for minimized parasitic inductance. For low ohmic value resistors, 4-terminal current sense resistors are suggested for best accuracy.
It is a good practice to reserve room for some ceramic capacitors for possible noise filtering as shown in Figure 8-7. CCS1 and CCS2 filter out differential-mode noise, 100-pF ceramic capacitors at each current sense pin filter out common-mode noise.