Abstract: A digital power factor correction device is provided, which is an all-digital control module. The digital power factor correction device includes a voltage loop control unit, an input power control unit, a current loop control unit, and a pulse width modulation generation unit, to perform power factor correction for minimizing the phase difference between input current and input voltage through adjusting input current with an external driver and a switch unit. The voltage loop control unit and the current loop control unit contain a proportion-integral-differentiation controller to form a voltage control loop and a current control loop, respectively. The input power control unit adjusts current waveform according to the input power, while the pulse width modulation generation unit determines the stop time of pulse width modulation to produce a pulse width modulation signal, to control the external driver and the switch unit for eliminating loading effect.

Abstract: A power detection regulation device including a power detection signal generator, a power state detector and a regulated output unit is disclosed. The power detection signal generator receives the input power from an external power supply and generates a power detection signal. The power state detector generates a power state signal based on the power state derived from the power detection signal. The regulated output unit receives the power state signal and generates a driving signal to an external electrical device in accordance with the feedback signal from the external electrical device. The power state signal is provided for the external electrical element to perform relevant processes, and the regulated output device can output the predetermined driving signal on receiving the power state signal indicating some abnormal situation in the input power so as to maintain the normal operation performed by the actuating element in the external electrical device.

Abstract: A power detection regulation device including a power detection signal generator, a power state detector and a regulated output unit is disclosed. The power detection signal generator receives the input power from an external power supply and generates a power detection signal. The power state detector generates a power state signal based on the power state derived from the power detection signal. The regulated output unit receives the power state signal and generates a driving signal to an external electrical device in accordance with the feedback signal from the external electrical device. The power state signal is provided for the external electrical element to perform relevant processes, and the regulated output device can output the predetermined driving signal on receiving the power state signal indicating some abnormal situation in the input power so as to maintain the normal operation performed by the actuating element in the external electrical device.

Abstract: A signal detector and a signal detection method adapted for detecting a voltage signal are provided. According to a digital signal converted from a low voltage full wave or half wave signal and/or a mains AC signal inputted thereto, the signal detector and the signal detection method are capable of detecting a voltage level, and/or a frequency, and/or a zero point, and/or a phase of the low voltage full wave or half wave signal and/or the mains AC signal inputted thereto, and determining whether the detected factor is abnormal, and is further capable of outputting an interrupt signal for subsequent processing.

Abstract: A power converter module is disclosed, which is an all-digital module. The power converter module includes a reference voltage generation unit, a voltage loop control unit, a current loop control unit, an input voltage compensation unit, and a pulse width modulation generation unit, to transfer input power to stable output power for providing power to an external loading device through driving bridge switch unit with external driver. The voltage loop control unit and the current loop control unit contain a proportion-integral-differentiation controller for receiving signal related to voltage and current of loading device to form voltage control loop and current control loop. The pulse width modulation generation unit contains function of deciding necessary stop time to improve quality of output power and decrease the effect of input power and loading variation, and to provide stable sine-waveform output power to the external loading device.

Abstract: A digital power factor correction device is provided, which is an all-digital control module. The digital power factor correction device includes a voltage loop control unit, an input power control unit, a current loop control unit, and a pulse width modulation generation unit, to perform power factor correction for minimizing the phase difference between input current and input voltage through adjusting input current with an external driver and a switch unit. The voltage loop control unit and the current loop control unit contain proportion-integral-differentiation controller to form voltage control loop and current control loop, respectively. The input power control unit adjusts current waveform according to the input power, while the pulse width modulation generation unit decides stop time of pulse width modulation to produce a pulse width modulation signal, to control the external driver and the switch unit for eliminating loading effect.

Abstract: A PWM step wave and sine wave driving device is provided. The driving device includes an ADC unit, an input processing unit, a first pulse width calculation unit, a register unit, a first output unit, a zero point detecting unit, a second pulse width calculation unit, a second output unit, and a multiplexer output unit. The driving device receives input signals, and output desired step wave or sine wave driving signals for driving an external electric device. The driving device detects a point of zero voltage of the system power supply by the zero point detecting unit. When the system power supply is abnormal, the first output unit outputs predetermined PWM step wave output signals, or the second output unit outputs predetermined PWM sine wave output signals. In such a way, the external electric device can be maintained for regular operation, so that the malfunction or breakdown thereof is prevented.

Abstract: An integrated circuit (IC) type voltage signal converter is provided for integrating with other ICs. The signal converter includes a first chopper circuit module, a second chopper circuit module, a full wave combining module, and a zero point detecting circuit module. Each of the circuit modules may be formed by an IC module. The first and second chopper circuit modules are composed of differential operational amplifiers for converting a high voltage signal into first and second low voltage half wave signals. The full wave combining module combines the first and second low voltage half wave signals to obtain a full wave signal. The zero point detecting circuit module converts the first and second low voltage half wave signals into a square wave having the same frequency of the high voltage signal.

Abstract: A PWM step wave and sine wave driving device is provided. The driving device includes an ADC unit, an input processing unit, a first pulse width calculation unit, a register unit, a first output unit, a zero point detecting unit, a second pulse width calculation unit, a second output unit, and a multiplexer output unit. The driving device receives input signals, and output desired step wave or sine wave driving signals for driving an external electric device. The driving device detects a point of zero voltage of the system power supply by the zero point detecting unit. When the system power supply is abnormal, the first output unit outputs predetermined PWM step wave output signals, or the second output unit outputs predetermined PWM sine wave output signals. In such a way, the external electric device can be maintained for regular operation, so that the malfunction or breakdown thereof is prevented.

Abstract: A signal converter and a method thereof are provided. The signal converter and the method are adapted for a voltage signal converting application. The signal converter and the method are adapted for converting a high voltage sine wave signal into a low voltage full wave and/or low wave signal, and improving the stability of the circuit. The signal converter is configured in an IC type, and can be integrated with other ICs, thus improving the systematic integration.

Abstract: A signal detector and a signal detection method adapted for detecting a voltage signal are provided. According to a digital signal converted from a low voltage full wave or half wave signal and/or a mains AC signal inputted thereto, the signal detector and the signal detection method is capable of detecting a voltage level, and/or a frequency, and/or a zero point, and/or a phase of the low voltage full wave or half wave signal and/or the mains AC signal inputted thereto, and determining whether the detected factor is abnormal, and is further capable of outputting interrupt signal for subsequent processing.