DC-to-DC converter

摘要

A DC-to-DC converter comprising an input inductor (11) which is connected to an input terminal (5), an output inductor (12) which is connected to an output terminal (7), a capacitor (14) which is connected in series with and between the inductors, a switch element (15) which is connected via a first resistor (16) to a common input/output conductor (9) and to a first node that is common to the input inductor and the capacitor, and a diode (18) which is connected via a second resistor (19) to the common input/output conductor and to a second node that is common to the output inductor and the capacitor, the switch element being responsive to a switch control signal (Vsw) applied thereto for alternately making the switch clement conducting and non-conducting such that currents (I1, I2) flowing through the inductors flow through the switch element or through the diode during an on-interval and an off-interval of the switch control signal (Vsw), respectively, a control circuit (30) having at least one measurement input for receiving a current measurement voltage (Vx) across the first and second resistors, a reference input for receiving a reference signal (Vref), and an output for supplying the switch control signal (Vsw).