Ripple compensation for burst mode control
Abstract:
A device includes a pulse generation circuit configured to cause a primary side of a flyback converter to generate a burst of pulses while a signal is enabled, a set-reset latch configured to output the signal and to reset in response to a number of pulses in the burst approaching a threshold, a comparator configured to set the set-reset latch when a compensated feedback voltage reaches a reference voltage, and a ripple compensation circuit configured to adjust a feedback voltage from a secondary side of the flyback converter by a compensation voltage to generate the compensated feedback voltage.
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