Systems and methods for regulating output currents of power conversion systems
First Claim
1. A system controller for a power converter, the system controller comprising:
- a modulation signal generator configured to receive a first compensation signal and a ramping signal and generate a modulation signal based at least in part on the first compensation signal and the ramping signal, the first compensation signal being associated with a converted signal and a second compensation signal, the converted signal being associated with an input signal for a power converter, the second compensation signal being associated with a sensing signal related to a first current flowing through a primary winding of the power converter; and
a drive signal generator configured to receive the modulation signal and output a drive signal to affect the first current, the drive signal being associated with an on-time period, a switch being closed during the on-time period;
wherein the system controller is configured to adjust a duration of the on-time period based at least in part on the converted signal and the first compensation signal.
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Accused Products
Abstract
Systems and methods are provided for regulating a power conversion system. An example system controller includes: a signal generator configured to receive a converted signal and a first compensation signal and generate a second compensation signal based at least in part on the converted signal and the first compensation signal, the converted signal being associated with an input signal for a power conversion system; a modulation component configured to receive the second compensation signal and a ramping signal and generate a modulation signal based at least in part on the second compensation signal and the ramping signal; and a drive component configured to receive the modulation signal and output a drive signal based at least in part on the modulation signal to a switch to affect the first current, the drive signal being associated with an on-time period, the switch being closed during the on-time period.
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Citations
30 Claims
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1. A system controller for a power converter, the system controller comprising:
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a modulation signal generator configured to receive a first compensation signal and a ramping signal and generate a modulation signal based at least in part on the first compensation signal and the ramping signal, the first compensation signal being associated with a converted signal and a second compensation signal, the converted signal being associated with an input signal for a power converter, the second compensation signal being associated with a sensing signal related to a first current flowing through a primary winding of the power converter; and a drive signal generator configured to receive the modulation signal and output a drive signal to affect the first current, the drive signal being associated with an on-time period, a switch being closed during the on-time period; wherein the system controller is configured to adjust a duration of the on-time period based at least in part on the converted signal and the first compensation signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method for regulating a power converter, the method comprising:
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receiving a first compensation signal and a ramping signal, the first compensation signal being associated with a converted signal and a second compensation signal, the converted signal being associated with an input signal for a power converter, the second compensation signal being associated with a sensing signal related to a first current flowing through a primary winding of the power converter; generating a modulation signal based at least in part on the first compensation signal and the ramping signal; receiving the modulation signal; and outputting a drive signal based at least in part on the modulation signal to affect the first current, the drive signal being associated with an on-time period; wherein the outputting a drive signal based at least in part on the modulation signal to affect the first current includes adjusting a duration of the on-time period based at least in part on the converted signal and the first compensation signal.
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Specification