DocID023264 Rev 2

5/17

AN4123

SPV1040 operating description

The duty cycle set by the MPPT algorithm can be overwritten if one of the following

conditions is triggered:

•

Input overcurrent protection (OVC): inductor peak current

≥ 1.65 A

•

Overtemperature protection (OVT): internal temperature

≥ 155 °C

•

Output voltage regulation: V

CTRL

triggers the 1.25 V internal reference

•

Output current limitation: RS1 x (I

CTRL_PLUS

- I

CTRL_MINUS

)

≥ 50 mV

•

MPP-SET voltage V

MPP-SET

≤ 300 mV at the startup and V

MPP-SET

≤ 450 mV in

running mode.

Application components must be carefully selected to avoid any undesired triggering of the

above thresholds.