Abstract: A signal transmission circuit includes a primary element configured to receive differential signals which are generated from a transmission signal and contain alternating-current (AC) components, a secondary element magnetically or capacitively coupled with the primary element and configured to output AC signals containing the AC components of the differential signals, a secondary circuit including a pair of transmission lines configured to propagate the AC signals. The secondary circuit is electrically connected to the secondary element and extracts the transmission signal from the AC signals. The feedback circuit feedbacks an intermediate voltage between voltages of the pair of transmission lines such that the intermediate voltage is converged to a reference voltage. This signal transmission circuit prevents the secondary circuit from malfunctioning due to noise.

Abstract: A signal transmission circuit includes a primary element configured to receive differential signals which are generated from a transmission signal and contain alternating-current (AC) components, a secondary element magnetically or capacitively coupled with the primary element and configured to output AC signals containing the AC components of the differential signals, a secondary circuit including a pair of transmission lines configured to propagate the AC signals. The secondary circuit is electrically connected to the secondary element and extracts the transmission signal from the AC signals. The feedback circuit feedbacks an intermediate voltage between voltages of the pair of transmission lines such that the intermediate voltage is converged to a reference voltage. This signal transmission circuit prevents the secondary circuit from malfunctioning due to noise.

Abstract: A DC to DC converter has first and second transistor coupled at a first node and coupled between first and second power supply terminals. An inductor has a first terminal coupled to the first node and a second terminal coupled to an output terminal for receiving a variable load. Transistor drive circuitry controls conduction of the first and second transistor in a non-overlapping conduction operation. A duty cycle controller controls a duty cycle for the first transistor and the second transistor. Control circuitry determines a mode of operation by monitoring cycles of operation and detecting a predetermined pattern of cycles in which inductor current becomes negative. A first mode of operation permits both the first transistor and the second transistor to alternately conduct and a second mode of operation does not permit the second transistor to conduct during each cycle when the inductor current is reduced to substantially zero.

Abstract: A DC to DC converter has first and second transistor coupled at a first node and coupled between first and second power supply terminals. An inductor has a first terminal coupled to the first node and a second terminal coupled to an output terminal for receiving a variable load. Transistor drive circuitry controls conduction of the first and second transistor in a non-overlapping conduction operation. A duty cycle controller controls a duty cycle for the first transistor and the second transistor. Control circuitry determines a mode of operation by monitoring cycles of operation and detecting a predetermined pattern of cycles in which inductor current becomes negative. A first mode of operation permits both the first transistor and the second transistor to alternately conduct and a second mode of operation does not permit the second transistor to conduct during each cycle when the inductor current is reduced to substantially zero.

Abstract: A power converter comprises an inductor (LP) and a controllable switch (CF) coupled to the inductor. A switch controller (1) supplies a periodic switching signal (VC1) which has a repetition time and a duty cycle to the controllable switch (CF) to generate a periodical inductor current (IL) through the inductor. A generator (2) generates an emulated signal (IE) based on timing information (TI) which represents the repetition time and the duty cycle to emulate a current signal being representative of the inductor current. A comparator (3) compares the emulated signal (IE) with the current signal (CS) to obtain an error signal (E). A generator controller (4) receives the error signal (E) to supply a control signal (VD) to the generator (2) to adapt a property of the emulated signal (IE) to become substantially equal to a property of the current signal (CS).

Abstract: A DC—DC converter with an inductor (L) and a switch (S1, S2) comprises an averaging circuit (2) which generates an average correction signal (ACS) representative for the difference of the peak current (IPEAK) and the actual average current (IAVE) through the inductor (L). A controller (2, 3, 4) controls the output voltage (VOUT) of the DC—DC converter based on regulating the duty-cycle of the switch (S1, S2) dependent on a sense signal (SES) passing a reference current level (RPCS), as in prior art peak current or valley current controlled DC—DC converters, but now using a reference current level (RPCS) that is also based on the average correction signal (ACS) and not only on the output voltage (VOUT). This enables the converter to control the output voltage (VOUT) more precisely.

Abstract: A power converter comprises an inductor (LP) and a controllable switch (CF) coupled to the inductor. A switch controller (1) supplies a periodic switching signal (VC1) which has a repetition time and a duty cycle to the controllable switch (CF) to generate a periodical inductor current (IL) through the inductor. A generator (2) generates an emulated signal (IE) based on timing information (TI) which represents the repetition time and the duty cycle to emulate a current signal being representative of the inductor current. A comparator (3) compares the emulated signal (IE) with the current signal (CS) to obtain an error signal (E). A generator controller (4) receives the error signal (E) to supply a control signal (VD) to the generator (2) to adapt a property of the emulated signal (IE) to become substantially equal to a property of the current signal (CS).

Abstract: A DC-DC converter with an inductor (L) and a switch (S1, S2) comprises an averaging circuit (2) which generates an average correction signal (ACS) representative for the difference of the peak current (IPEAK) and the actual average current (IAVE) through the inductor (L). A controller (2, 3, 4) controls the output voltage (VOUT) of the DC-DC converter based on regulating the duty-cycle of the switch (S1, S2) dependent on a sense signal (SES) passing a reference current level (RPCS), as in prior art peak current or valley current controlled DC-DC converters, but now using a reference current level (RPCS) that is also based on the average correction signal (ACS) and not only on the output voltage (VOUT). This enables the converter to control the output voltage (VOUT) more precisely.

Abstract: A two-line multi-station bus system has a clock wire and a data wire and supports selective slave station addressing by a prevalent master station for thereupon eliciting a bitwise clocked data transfer between the clocking master station and an addressed and clocked slave station. Moreover, the system supports analog signal transfer in that the prevalent master station has a holding member for while eliciting the analog signal from the actual addressed slave station holding said clocking through carrying the clock wire at a predetermined binary value. The analog signal is received until changeover of the clock wire to a binary value other than the predetermined binary value a particular version the analog signal is pulse width modulated in combination with associate delimiting signals on the clock wire sent by the transmitter station that is not necessarily the master station.