SNVSCM3 June 2024 LM5171
PRODUCTION DATA
To achieve the highest regulation accuracy over wider load range, the user must target to create 50mV of VCS at full current. Therefore, RCS must be selected as Equation 89:
Ideally, a 1.5mΩ current sense resistor must be chosen for this example. However, owing to availability, a standard non-inductive 1mΩ 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 7-8. CCS1 and CCS2 filter out differential-mode noise, 100pF ceramic capacitors at each current sense pin filter out common-mode noise.