Systems and methods with prediction mechanisms for synchronization rectifier controllers

A system controller for a power converter, the system controller comprising:

• a first controller terminal;
• and
• a second controller terminal;
• wherein the first controller terminal is configured to receive an input signal;
• wherein the second controller terminal is configured to output a first drive signal to a first switch to affect a first current associated with a first winding of the power converter, the first drive signal being associated with the input signal;
• wherein the system controller is configured to:
• detect a first duration of a first time period for a second drive signal, the second drive signal being outputted to a second switch to affect a second current associated with a second winding of the power converter, the second winding being coupled to the first winding, the first time period including a first beginning and a first end;
• detect a demagnetization duration of a demagnetization period associated with the first winding, the demagnetization period including a second beginning and a second end;
• detect a second duration of a second time period for the second drive signal, the second time period including a third beginning and a third end;
• and
• determine a third duration of a third time period for the first drive signal based at least in part on the first duration, the demagnetization duration, and the second duration, the third time period including a fourth beginning and a fourth end, the fourth end being after the first end, the second end, and the third end;
• wherein:
• the second switch is closed from the first beginning to the first end;
• the second switch is open from the first end to the third beginning;
• and
• the second switch is closed from the third beginning to the third end.

A method for a power converter, the method comprising:

• receiving an input signal;
• and
• outputting a drive signal to a switch to affect a current associated with a winding of the power converter, the drive signal being associated with the input signal;
• wherein the outputting a drive signal to a switch to affect a current associated with a winding of the power converter includes:
• detecting a first duration of a demagnetization period associated with the winding based at least in part on the input signal, the demagnetization period including a first beginning and a first end;
• and
• determining a second duration of a time period for the drive signal based at least in part on the first duration, the time period including a second beginning and a second end, the second end being after the first end.

A method for a power converter, the method comprising:

• receiving an input signal;
• and
• outputting a first drive signal to a first switch to affect a first current associated with a first winding of the power converter, the first drive signal being associated with the input signal;
• wherein the outputting a first drive signal to a first switch to affect a first current associated with a first winding of the power converter includes:
• detecting a first duration of a first time period for a second drive signal, the second drive signal being outputted to a second switch to affect a second current associated with a second winding of the power converter, the first time period including a first beginning and a first end;
• detecting a demagnetization duration of a demagnetization period associated with the first winding, the demagnetization period including a second beginning and a second end;
• detecting a second duration of a second time period for the second drive signal, the second time period including a third beginning and a third end;
• and
• determining a third duration of a third time period for the first drive signal based at least in part on the first duration, the demagnetization duration, and the second duration, the third time period including a fourth beginning and a fourth end, the fourth end being after the first end, the second end, and the third end;
• wherein:
• the second switch is closed from the first beginning to the first end;
• the second switch is open from the first end to the third beginning;
• and
• the second switch is closed from the third beginning to the third end.