Balance-converter circuit for solar modules

A system comprising:

• a voltage adjustment section configured to supply a target output voltage to a load;
• a power supply section comprising:
• a regulator configured to output a regulated voltage that powers the voltage adjustment section;
• a management capacitor coupled to a regulator input terminal of the regulator;
• and
• a first diode coupling a set of solar substrings to the regulator input terminal of the regulator;
• a regulator management section comprising:
• a management switch configured to selectively couple the set of solar substrings to an adjustment input terminal of the voltage adjustment section;
• and
• a comparator configured to supply control signals to the management switch based on a voltage of the regulator input terminal;
• and
• wherein, during a refresh cycle:
• the first diode is configured to, in response to a first output voltage from the set of solar substrings falling below a threshold output voltage, transition into a reverse bias state to trigger discharge of the management capacitor;
• and
• the comparator is configured to, in response to a first input voltage of the regulator input terminal falling below a threshold input voltage during discharge of the management capacitor, output a first control signal to:
• a gate of the management switch to transition the management switch into an inactive state to decouple the set of solar substrings from the adjustment input terminal of the voltage adjustment section;
• and
• a first control terminal of the voltage adjustment section to suspend operation of the voltage adjustment section to:
• reduce loading of the set of solar substrings;
• drive the first output voltage from the set of solar substrings toward the threshold output voltage;
• and
• initiate charging of the management capacitor, via the first diode, to maintain operation of the regulator.

A system comprising:

• a voltage adjustment section configured to drive an output voltage, generated by a set of solar substrings, to a target output voltage;
• a power supply section configured to output a regulated voltage that powers the voltage adjustment section;
• and
• a regulator management section comprising:
• a management switch configured to selectively couple the set of solar substrings to the voltage adjustment section;
• and
• a comparator configured to, in response to a first input voltage of the power supply section falling below a threshold voltage, output a first control signal to:
• a gate of the management switch to transition the management switch into an inactive state to decouple the set of solar substrings from the voltage adjustment section;
• and
• a control terminal of the voltage adjustment section to suspend operation of the voltage adjustment section and reduce loading of the set of solar substrings.