Abstract: A buck-type switched-mode power supply includes a switching cell formed by a first switch configured to be periodically set to the on state by a first control signal modulated by a modulation of pulse-width or pulse-frequency modulation type. An amplifier generates an error voltage representative of a difference between a reference voltage and an output voltage of the power supply intended to be applied to the input of the amplifier. A delay circuit applies a delay to the first control signal to decreasing a difference between the error voltage and the reference voltage. A delay modulation circuit modulates the value of the delay according to a difference between the error voltage and the reference voltage.

Abstract: A voltage regulator has a first output is connected to a capacitive element. A current source is coupled between the first output and a first node receiving a power supply voltage. The current source delivers a first DC current in response to assertion of a first binary signal. A comparator asserts a second binary signal when a first voltage on the first output is lower than a set point voltage. A first circuit controls assertion of the first signal for a first fixed time period when the second binary signal is asserted.

Abstract: In an embodiment, a voltage converter includes: a first transistor coupled between a first rail configured to receive a supply voltage and a first node; and an inductance coupled between the first node and a second node configured to deliver an output voltage, wherein, at each operating cycle of the converter, the first transistor is maintained in the on state for a first time period proportional to the inverse of a voltage difference between the supply voltage and the output voltage.

Abstract: In an embodiment, a voltage converter includes: a first transistor coupled between a first rail configured to receive a supply voltage and a first node; and an inductance coupled between the first node and a second node configured to deliver an output voltage, wherein, at each operating cycle of the converter, the first transistor is maintained in the on state for a first time period proportional to the inverse of a voltage difference between the supply voltage and the output voltage.