Patent ID: 7049801
Filing Date: 2006-05-23
Classification: H02M,H03K,Y02B

Abstract:
1. A adaptive dual-slope frequency controller for adjusting power conversion, comprising: a storage capacitor to charge/discharge; a first charging current source coupled to the storage capacitor via a first switch; a first discharging current source coupled to the storage capacitor via a second switch; a second charging current source coupled to the storage capacitor via a third switch; a second discharging source coupled to the storage capacitor via a fourth switch; at least one conversion circuit to receive an error voltage and output a corresponding conversion signal to any of the charging/discharging current sources to adjust the charge/discharge current extracted by the current source; and a control circuit to receive a capacitor voltage, a high voltage reference, and a low voltage reference and output a control signal and an output pulse; wherein the control signal controls the charge/discharge current on the first charging current source, the first discharging current source, the second charging current source, and the second discharging current source to control the charge/discharge current of the storage capacitor, thereby controlling the period of the capacitor voltage and thus the frequency of a gate pulse.