A rotor position detection system according to one embodiment includes a H bridge circuit, a current detection circuit, a time measurement circuit, a zero cross determination circuit, and a rotor position calculation circuit. The zero cross determination circuit calculates a zero cross position of the induced voltage of the motor based on a difference time calculated by the time measurement circuit. The rotor position calculation circuit calculates a rotor position of the motor based on the zero cross position of the induced voltage.

A control device for a switching voltage regulator having a high-side switch and a low-side switch to supply a switching voltage to a load includes a comparator configured to compare the switching voltage with a reference voltage to provide an enable signal to the low-side switch, and a spike detection circuit configured to receive the switching voltage and output an offset control signal to execute a time shift to the enable signal.

A control device for a switching voltage regulator having a high-side switch and a low-side switch to supply a switching voltage to a load includes a comparator configured to compare the switching voltage with a reference voltage to provide an enable signal to the low-side switch, and a spike detection circuit configured to receive the switching voltage and output an offset control signal to execute a time shift to the enable signal.

A programmable SCR Firing system that includes modules that work together to manipulate the SCR firing circuitry so that it mimics supply load power signatures. The programmable high speed SCR firing system includes a timing module, a delay module, a zero crossing module, a single phase delay module, a firing pulse delay module, a control interface, and an user interface.

A programmable SCR Firing system that includes modules that work together to manipulate the SCR firing circuitry so that it mimics supply load power signatures. The programmable high speed SCR firing system includes a timing module, a delay module, a zero crossing module, a single phase delay module, a firing pulse delay module, a control interface, and an user interface.

A method for generating a clock signal from an AC power supply signal includes receiving a reference signal at a first input of a comparator and receiving the AC power supply signal at a second input of the comparator. A clock signal is output by the comparator based on a comparison of the reference signal and the AC power supply signal, such that transitions of the clock signal take place while the reference signal is at a trigger voltage. Following each clock signal transition, the reference signal is changed from the trigger voltage to a hysteresis voltage that reduces a likelihood of the comparator outputting, immediately after each clock signal transition, a spurious transition of the clock signal due to noise on the AC power supply signal. The reference signal is then returned from the hysteresis voltage to the trigger voltage prior to return of the AC power supply signal to a level intended to cause a further clock signal transition at the output of the comparator.

A method for generating a clock signal from an AC power supply signal includes receiving a reference signal at a first input of a comparator and receiving the AC power supply signal at a second input of the comparator. A clock signal is output by the comparator based on a comparison of the reference signal and the AC power supply signal, such that transitions of the clock signal take place while the reference signal is at a trigger voltage. Following each clock signal transition, the reference signal is changed from the trigger voltage to a hysteresis voltage that reduces a likelihood of the comparator outputting, immediately after each clock signal transition, a spurious transition of the clock signal due to noise on the AC power supply signal. The reference signal is then returned from the hysteresis voltage to the trigger voltage prior to return of the AC power supply signal to a level intended to cause a further clock signal transition at the output of the comparator.

A primary side wireless power transmitter inductively couplable to a secondary side wireless power receiver for supplying power to the wireless power receiver for receiving communications from the secondary side wireless power receiver through the inductive coupling comprises a primary side tank circuit receiving a signal on from the secondary side wireless power receiver. A phase delay or time delay circuit generates a fixed delay clock signal. A sample and hold circuit samples a tank circuit voltage utilizing the fixed phase or time delayed clock signal. A comparator is coupled to an output of the sample and hold circuit for extracting data or commands from the signal stream. A method of operating a primary side wireless transmitter inductively coupled to a secondary side wireless power receiver for supplying power to the wireless power receiver to power a load coupled to the receiver is also disclosed.

A primary side wireless power transmitter inductively couplable to a secondary side wireless power receiver for supplying power to the wireless power receiver for receiving communications from the secondary side wireless power receiver through the inductive coupling comprises a primary side tank circuit receiving a signal on from the secondary side wireless power receiver. A phase delay or time delay circuit generates a fixed delay clock signal. A sample and hold circuit samples a tank circuit voltage utilizing the fixed phase or time delayed clock signal. A comparator is coupled to an output of the sample and hold circuit for extracting data or commands from the signal stream. A method of operating a primary side wireless transmitter inductively coupled to a secondary side wireless power receiver for supplying power to the wireless power receiver to power a load coupled to the receiver is also disclosed.

A rotor position detection system according to one embodiment includes a H bridge circuit, a current detection circuit, a time measurement circuit, a zero cross determination circuit, and a rotor position calculation circuit. The zero cross determination circuit calculates a zero cross position of the induced voltage of the motor based on a difference time calculated by the time measurement circuit. The rotor position calculation circuit calculates a rotor position of the motor based on the zero cross position of the induced voltage.