Datasheet

Detailed description SPV1040
12/15 DocID18080 Rev 5
Figure 12. MPPT working principle
6.11 Burst mode
When the output voltage reaches the battery charge voltage, the MPP-SET voltage drops
below 450 mV, or the output current reaches the output maximum current limit, the duty
cycle D drops down to 10% and the device evolves from Operating mode to Burst mode.
The converter no longer works at constant frequency, but at frequencies gradually lower (1
T
ON
over 1 PWM cycle, 1 T
ON
over 2 PWM cycles, …,1 T
ON
over 16 PWM cycles) prior to
entering Sleep-IN mode.
6.12 Sleep-IN mode
Once Sleep-IN mode has been entered, no current is provided to the load. The device exits
this mode once the cause which forced it into this state is no longer present.