An adding circuit for multi-channel signals and an implementation method thereof are disclosed. The adding circuit for multi-channel signals includes an operational amplifier, a plurality of charge and discharge circuits, a charge transfer circuit, a switch sequence and a control circuit. In this disclosure, the duty cycle of each charge and discharge circuit and the charge transfer circuit can be programmed and preset according to the actual needs, which is not only suitable for the static voltage adding circuit, but also suitable for the dynamic voltage adding circuit. When there are multi-channel signals, the output interference caused by individual signals can be prevented. The area of the adding circuit can be greatly reduced. The adding circuit can be IP-based, controlled by programing and presetting a variety of combined adding algorithms, so the chip cost can be saved and a wide applicability in detection and monitoring can be provided.

An adding circuit for multi-channel signals and an implementation method thereof are disclosed. The adding circuit for multi-channel signals includes an operational amplifier, a plurality of charge and discharge circuits, a charge transfer circuit, a switch sequence and a control circuit. In this disclosure, the duty cycle of each charge and discharge circuit and the charge transfer circuit can be programmed and preset according to the actual needs, which is not only suitable for the static voltage adding circuit, but also suitable for the dynamic voltage adding circuit. When there are multi-channel signals, the output interference caused by individual signals can be prevented. The area of the adding circuit can be greatly reduced. The adding circuit can be IP-based, controlled by programing and presetting a variety of combined adding algorithms, so the chip cost can be saved and a wide applicability in detection and monitoring can be provided.

A clock synthesizer is provided. The Clock synthesizer includes a Phase Locked Loop (PLL) configured to generate a clock signal based on a reference signal. A clock buffer is connected to the PLL. The clock buffer stores the clock signal. A Duty Cycle Controller and Phase Interpolator (DCCPI) circuit is connected to the clock buffer. The DCCPI circuit receives the clock signal from the clock buffer, adjusts a duty cycle of the clock signal to substantially equal to 50%, performs phase interpolation on the clock signal, and provides the clock signal as an output after adjusting the duty cycle substantially equal to 50% and performing the phase interpolation.

A clock synthesizer is provided. The Clock synthesizer includes a Phase Locked Loop (PLL) configured to generate a clock signal based on a reference signal. A clock buffer is connected to the PLL. The clock buffer stores the clock signal. A Duty Cycle Controller and Phase Interpolator (DCCPI) circuit is connected to the clock buffer. The DCCPI circuit receives the clock signal from the clock buffer, adjusts a duty cycle of the clock signal to substantially equal to 50%, performs phase interpolation on the clock signal, and provides the clock signal as an output after adjusting the duty cycle substantially equal to 50% and performing the phase interpolation.

Devices and methods for detecting and correcting duty cycles are described. An input switching unit is configured to perform at least one of an operation of outputting differential input signals as a first combination of first and second output signals and an operation of outputting the differential input signals as a second combination of the first and second output signals, according to one of a plurality of control signals. A comparator is configured to receive the first output signal through a first input terminal thereof, to receive the second output signal through a second input terminal thereof, to generate duty detection signals by comparing the signal of the first input terminal and the signal of the second input terminal according to at least another one of the plurality of control signals, and to adjust an offset of at least one of the first input terminal and the second input terminal.

Devices and methods for detecting and correcting duty cycles are described. An input switching unit is configured to perform at least one of an operation of outputting differential input signals as a first combination of first and second output signals and an operation of outputting the differential input signals as a second combination of the first and second output signals, according to one of a plurality of control signals. A comparator is configured to receive the first output signal through a first input terminal thereof, to receive the second output signal through a second input terminal thereof, to generate duty detection signals by comparing the signal of the first input terminal and the signal of the second input terminal according to at least another one of the plurality of control signals, and to adjust an offset of at least one of the first input terminal and the second input terminal.

A matrix multiplication circuit module and a matrix multiplication method are provided by the embodiments of the present disclosure. The circuit module includes one or more row-column calculation units for realizing row-column multiplication calculation. Each of the row-column calculation units comprises one or more multiplying units and an adding unit. Each of the one or more multiplying unit has an output end connected to an input end of the adding unit. Each of the multiplying units comprises an electrical signal regulating subunit and a load. The electrical signal regulating subunit is configured to regulate a magnitude of an input electrical signal. A multiplication operation is performed by the electrical signal regulating subunit and the load in response to an electrical signal inputted to the multiplying unit. The load has a fixed load value.

A matrix multiplication circuit module and a matrix multiplication method are provided by the embodiments of the present disclosure. The circuit module includes one or more row-column calculation units for realizing row-column multiplication calculation. Each of the row-column calculation units comprises one or more multiplying units and an adding unit. Each of the one or more multiplying unit has an output end connected to an input end of the adding unit. Each of the multiplying units comprises an electrical signal regulating subunit and a load. The electrical signal regulating subunit is configured to regulate a magnitude of an input electrical signal. A multiplication operation is performed by the electrical signal regulating subunit and the load in response to an electrical signal inputted to the multiplying unit. The load has a fixed load value.

A spread spectrum switching power converter circuit includes: a power stage circuit which includes an inductor and a power switch and is configured to switch the power switch according to a switching signal having spread spectrum for power conversion; a variable frequency oscillator, which generates a spread spectrum clock signal according to a spread spectrum control signal; a spread spectrum control circuit, which generates the spread spectrum control signal according to a first clock signal and a second clock signal; and a pulse width modulation circuit, configured to generate the switching signal according to a feedback signal based on the spread spectrum clock signal. The spread spectrum control circuit generates the spread spectrum control signal by sampling and combining a periodic waveform and a random waveform. The random waveform is generated according to the first clock signal and the periodic waveform is generated according to the second clock signal.

A spread spectrum switching power converter circuit includes: a power stage circuit which includes an inductor and a power switch and is configured to switch the power switch according to a switching signal having spread spectrum for power conversion; a variable frequency oscillator, which generates a spread spectrum clock signal according to a spread spectrum control signal; a spread spectrum control circuit, which generates the spread spectrum control signal according to a first clock signal and a second clock signal; and a pulse width modulation circuit, configured to generate the switching signal according to a feedback signal based on the spread spectrum clock signal. The spread spectrum control circuit generates the spread spectrum control signal by sampling and combining a periodic waveform and a random waveform. The random waveform is generated according to the first clock signal and the periodic waveform is generated according to the second clock signal.