Patent
Power factor correction circuit and driving method thereof
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TLDR
In this article, a power factor correction circuit (PFC) was proposed to control the output power by controlling a switching operation of the power switch, and counting the number of times that the inductor current reaches a predetermined maximum current to turn off the switch when the count result reached a predetermined short circuit threshold count.Abstract:
The present invention relates to a power factor correction circuit and a driving method thereof. The power factor correction circuit refers to an inductor receiving an input voltage and supplying output power, a power switch connected to the inductor and controlling an inductor current flowing in the inductor, and an auxiliary coil coupled with the inductor with a predetermined turn ratio. The power factor correction circuit controls the output power by controlling a switching operation of the power switch, and counts the number of times that the inductor current reaches a predetermined maximum current to turn off the power switch when the count result reaches a predetermined short circuit threshold count.read more
Citations
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Power factor correction circuit
TL;DR: In this paper, a power factor correction circuit is proposed to correct the power factor of AC voltage in a steady state and a smoothing unit is used to smoothen the smoothed voltage.
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References
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Patent
PFC-PWM controller having a power saving means
TL;DR: In this article, a PFC-PWM controller with a power saving means is presented, where a built-in current synthesizer generates a bias current in response to feedback voltages sampled from the PWM circuit and the PFC circuit.
Patent
Switching power source apparatus
TL;DR: In this paper, a switching power source apparatus includes a switching element connected through a primary winding of a transformer to a DC power source, a start circuit for a control circuit, a rectify-smooth circuit of a voltage of a secondary winding of the transformer, and a rectification smooth circuit to rectify and smooth the source voltage into a source voltage for the control circuit.
Patent
Power factor correction circuit
TL;DR: In this paper, a power factor correction circuit is proposed to correct the power factor of AC voltage in a steady state and a smoothing unit is used to smoothen the smoothed voltage.
Patent
Controller for pulse width modulation circuit using AC sine wave from DC input signal
Dror Korcharz,Alon Ferentz +1 more
TL;DR: A pulse width modulation (PWM) controller suitable for use with a variety of open loop topology power supply circuits including ring generator circuits is presented in this paper.The PWM controller is adapted to provide the required signals to control the various possible open loop converter topologies.
Patent
Controlled frequency power factor correction circuit and method
TL;DR: In this article, a power factor correction (PFC) circuit is defined, which includes a latch (16) having an output that initiates a coil current (ICOIL) in response to a transition edge of a clock signal (CLOCK) to generate a PFC signal (VOUT), and an output (38) provides the control signal as a function of the charging time and the duty cycle.