One embodiment provides an electronic control unit (ECU) for a vehicle. The ECU includes transceiver circuitry, voltage measurement circuitry and feature set circuitry. The transceiver circuitry is to at least one of send and/or receive a message. The voltage measurement circuitry is to determine at least one of a high bus line voltage (VCANH) value and/or a low bus line voltage (VCANL) value, for each zero bit of at least one zero bit of a received message. The received the message includes a plurality of bits. The feature set circuitry is to determine a value of at least one feature of a feature set based, at least in part, on at least one of a high acknowledge (ACK) threshold voltage (VthH) and/or a low ACK threshold voltage (VthL). The feature set includes at least one of an operating most frequently measured VCANH value (VfreqH2) of a number of VCANH values and/or an operating most frequently measured VCANL value (VfreqL2) of a number of VCANL values.

A startup control method for a DC/DC converter is used for starting the DC/DC converter with energy transferred from a low-voltage side to a high-voltage side, and includes: determining a duty cycle or a frequency of a driving signal based on at least a voltage spike reference value and a voltage spike measurement value of a power switch at the low-voltage side; and outputting the driving signal to the power switch, thereby controlling the on and off of the power switch. The startup control method for a DC/DC converter of the disclosure can improve a reverse charging power of the converter to the maximum extent and reduce the time needed for charging a bus capacitor during a reverse startup process while ensuring voltage stress on the power switch not to exceed a limit.

A startup control method for a DC/DC converter is used for starting the DC/DC converter with energy transferred from a low-voltage side to a high-voltage side, and includes: determining a duty cycle or a frequency of a driving signal based on at least a voltage spike reference value and a voltage spike measurement value of a power switch at the low-voltage side; and outputting the driving signal to the power switch, thereby controlling the on and off of the power switch. The startup control method for a DC/DC converter of the disclosure can improve a reverse charging power of the converter to the maximum extent and reduce the time needed for charging a bus capacitor during a reverse startup process while ensuring voltage stress on the power switch not to exceed a limit.

A circuit to modulate the power supply to track input or output voltages provided to or output by a plurality of amplifiers to reduce power dissipation is provided. The circuit may include a peak detection circuit configured to receive a plurality of voltages respectively corresponding to the plurality of amplifiers, and to detect and output information regarding a maximum instantaneous voltage from the received plurality of voltages, and a summing circuit configured to output a sum of the information regarding the maximum instantaneous voltage and an amplifier headroom voltage. A reference voltage may be provided for the supply voltage responsive to the output sum. The circuit may also include a scaling circuit configured to scale the output sum, and the reference voltage may be a scaled reference voltage output by the scaling circuit.

A circuit to modulate the power supply to track input or output voltages provided to or output by a plurality of amplifiers to reduce power dissipation is provided. The circuit may include a peak detection circuit configured to receive a plurality of voltages respectively corresponding to the plurality of amplifiers, and to detect and output information regarding a maximum instantaneous voltage from the received plurality of voltages, and a summing circuit configured to output a sum of the information regarding the maximum instantaneous voltage and an amplifier headroom voltage. A reference voltage may be provided for the supply voltage responsive to the output sum. The circuit may also include a scaling circuit configured to scale the output sum, and the reference voltage may be a scaled reference voltage output by the scaling circuit.

A peak current detector is integrated into a power supply, such as a power management integrated circuit, to detect glitch attacks imposed on the power rails inside the power supply. Integrated circuitry being supplied by the power supply periodically checks the state of the power supply via a secure communication channel to obtain the detected peak current values, which allow the integrated circuitry to detect those attacks and react accordingly to any possible threats.

A buck converter includes a power switch having a first end to receive an input voltage, a synchronous switch connected between a second end of the power switch and the ground, an inductor having a first end connected to the other end of the power switch, and a switch control circuit configured to turn off the synchronous switch when a zero voltage delay time passes after an inductor current flowing through the inductor reaches a predetermined reference value, calculate a dead time based on the input voltage and the zero voltage delay time, and turn on the power switch when the dead time passes following the turn-off time of the synchronous switch.

A buck converter includes a power switch having a first end to receive an input voltage, a synchronous switch connected between a second end of the power switch and the ground, an inductor having a first end connected to the other end of the power switch, and a switch control circuit configured to turn off the synchronous switch when a zero voltage delay time passes after an inductor current flowing through the inductor reaches a predetermined reference value, calculate a dead time based on the input voltage and the zero voltage delay time, and turn on the power switch when the dead time passes following the turn-off time of the synchronous switch.

The present disclosure discloses a method and device for sampling a pulse signal, and a computer program medium. The method comprises: collecting a plurality of first sampling points on a rising edge portion of the pulse signal according to a plurality of preset sampling thresholds, where each of the plurality of first sampling points is represented by one of the preset sampling thresholds and first time corresponding to the one of the preset sampling thresholds (S1); collecting a plurality of second sampling points on a falling edge portion of the pulse signal according to the plurality of preset sampling thresholds, where each of the second sampling points is represented by one of the preset sampling thresholds and second time corresponding to the one of the preset sampling thresholds (S2); and collecting a third sampling point of the pulse signal at third time separated from the first or second time by a preset time interval, where the third sampling point is represented by the third time and a response amplitude corresponding to the third time (S3). By using the technical solutions provided by the present disclosure, it can improve the sampling efficiency of the pulse signal and reduce energy consumption.

A method for temperature compensation of a test tone used in meter verification is provided. The method uses a drive amplifier to provide a drive signal to a drive circuit, wherein the drive circuit includes a drive mechanism in a meter assembly of a vibratory meter. The method measures a first maximum amplitude of the drive signal at a first temperature of the drive circuit, and measures a second maximum amplitude of the drive signal at a second temperature of the drive circuit. The method also determines a maximum amplitude-to-temperature relationship for the drive circuit based on the first maximum amplitude at the first temperature and the second maximum amplitude at the second temperature.