摘要:
Various exemplary embodiments relate to a current driver for controlling a current source controlled by an alternating current (AC) signal, including: a current sensor configured to measure an output current from the current source; a threshold detector configured to detect when the measured current is below a threshold value; and a controller configured to control the current source using a duty cycle of the AC signal when the measured current is below the threshold.
摘要:
A system and method for driving a relay circuit involves driving a relay circuit using a first driver circuit if a voltage of a battery supply for the relay circuit is lower than a voltage threshold and driving the relay circuit using a second driver circuit if the voltage of the battery supply for the relay circuit is higher than the voltage threshold.
摘要:
A power supply circuit and a method for operating the power supply circuit are described. In one embodiment, a power supply circuit includes multiple power elements configured to convert an input voltage to an output voltage, a driver circuit coupled to the power elements and configured to drive the power elements, a regulator controller coupled to the power elements and configured to control the power elements for the conversion of the input voltage to the output voltage, and at least one bypass switch coupled to the power elements. The at least one bypass switch is used to bypass at least one of the power elements. Other embodiments are also described.
摘要:
A power supply circuit and a method for operating a power supply circuit involves selecting a normal operational mode or a pass-through operational mode for a switched mode power supply, in the normal operational mode, converting an input voltage of a power supply circuit to an intermediate voltage using a switching regulator of the switched mode power supply, in the pass-through operational mode, disabling the switching regulator such that the input voltage of the power supply circuit is unchanged by the switching regulator and an electric current consumption of the switching regulator approaches zero, and converting the intermediate voltage or the input voltage of the power supply circuit to an output voltage using a linear voltage regulator.
摘要:
An integrated circuit arrangement on a common chip or chip support, for safety critical applications, in particular for use in control and regulation units for a motor vehicle braking system, including at least one microprocessor system module, which has at least one core processor, provided with at least one ROM and at least one RAM, at least one power module for controlling external users and at least one monitoring module for monitoring at least parts and/or part systems of the circuit arrangement, the circuit arrangement including at least one temperature sensor for recording a chip temperature.
摘要:
In one embodiment, a communication circuit is configured for automated addressing in a network of series connected communication circuits. The communication circuit includes a voltage source and a switch connected in parallel between first and second data ports of the circuit. While operating in an addressing mode, a first voltage is sampled from a first data port while the switch is closed. The switch is opened to provide a voltage potential between the first and second data port and a second voltage is sampled from the second data port. An address of the communication circuit in the network is determined based on a difference of the first and second voltages.
摘要:
An output driver circuit is provided. In accordance with various example embodiments, an output driver circuit includes a high-side driver circuit having transistors coupled in anti-series between a power source and an output node, and a low-side driver circuit having transistors coupled in anti-series between the output node and ground. For each transistor, a diode is connected between the source and drain of the transistor, with the diodes of the respective high-side and low-side circuits being arranged to prevent/mitigate the flow of current in opposite directions.
摘要:
A power supply circuit and a method for operating a power supply circuit involves selecting a normal operational mode or a pass-through operational mode for a switched mode power supply, in the normal operational mode, converting an input voltage of a power supply circuit to an intermediate voltage using a switching regulator of the switched mode power supply, in the pass-through operational mode, disabling the switching regulator such that the input voltage of the power supply circuit is unchanged by the switching regulator and an electric current consumption of the switching regulator approaches zero, and converting the intermediate voltage or the input voltage of the power supply circuit to an output voltage using a linear voltage regulator.
摘要:
A power supply circuit and a method for operating the power supply circuit are described. In one embodiment, a power supply circuit includes multiple power elements configured to convert an input voltage to an output voltage, a driver circuit coupled to the power elements and configured to drive the power elements, a regulator controller coupled to the power elements and configured to control the power elements for the conversion of the input voltage to the output voltage, and at least one bypass switch coupled to the power elements. The at least one bypass switch is used to bypass at least one of the power elements. Other embodiments are also described.
摘要:
An output driver circuit is provided. In accordance with various example embodiments, an output driver circuit includes a high-side driver circuit having transistors coupled in anti-series between a power source and an output node, and a low-side driver circuit having transistors coupled in anti-series between the output node and ground. For each transistor, a diode is connected between the source and drain of the transistor, with the diodes of the respective high-side and low-side circuits being arranged to prevent/mitigate the flow of current in opposite directions.