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Rev.2.1 Oct.04, 2019

AX3050/A

Rectifier Diode

Use a Schottky diode as the rectifier to conduct current when the High-Side Power

Switch is off.

The Schottky diode must have current rating higher than the maximum output

current and a reverse voltage rating higher than the maximum input voltage.

Output Cable Resistance Compensation

To compensate for resistive voltage drop across the charger's output cable, the

AX3050/A integrates a simple, user-programmable cable voltage drop compensation

using the impedance at the FB pin. Use the curve in Figure 2 to choose the proper

feedback resistance values for cable compensation. RFB1 is the high side resistor of

voltage divider.

FB

1

FB

FB

2

FB

1

FB

OUT

I

×

R

+

]

V

×

)

R

R

+

1

[(

=

V

Figure2 Cable Compensation at Various Resistor Divider Values