Abstract:
A high voltage generator (GHT) incorporated in an integrated circuit (IC) and comprising a charge pump (1) whose input voltage is the supply voltage (VDD) of the integrated circuit (IC) and which is clocked by direct clock signals (Φ) and complemented clock signals ({overscore (Φ)}), characterized in that it comprises means (5) for re-injecting a fraction (VIN) of the voltage from said charge pump (VHV) into the input (6) to which said supply voltage (VDD) is applied.
Abstract translation:一种集成在集成电路(IC)中并包括其输入电压是集成电路(IC)的电源电压(V SUB DD)的电荷泵(1))的高压发生器(GHT),其中 由直接时钟信号(Phi)和补码时钟信号({overscore(Phi))计时,其特征在于它包括用于重新注入电压的分数(V IN IN IN)的装置(5) 所述电荷泵(V BAT)进入施加了所述电源电压(V SUB DD)的输入端(6)。
Abstract:
A DC-DC converter includes an induction coil cooperating with two switches, which operate alternately, to supply output voltage of a determined level relative to input voltage. The converter control method includes, in each cycle, a first phase of first duration with first switch controlled to make it conductive, and to increase current in the induction coil, and a second phase with second switch controlled to be conductive and to decrease current in the induction coil during a second adjustable time period. Detection device detects, at the end of the second phase, sign of overvoltage across one terminal of the induction coil connected to the switches, and supplies a detection signal kept in a high or low state, depending upon sign of detected overvoltage. Timing device receives detection signal for adapting, in each successive cycle, the second duration of the second phase to cancel out current in the induction coil.