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LTC7149 voltage drop compensation


Our design requests output current measurements in -5V 0.5A buck converter. We use the external 100mR resistor for current measurement. We modeled the circuit with LTC7149 and simulation circuit requested some special connections for the stable operation of the control loop and voltage drop correction. See schematic below.

We ask correct connections for next points (return) for voltage drop compensation (in simulator and in PCB):

  1. SVout- ;
  2. Vout- ;
  3. Iset circuits ;
  4. Ith circuits ;
  5. Rt resistor ;
  6. IntVcc capacitor.