Inno-tech Co., Ltd.

Tsu-Huai Chan

Shu-Chia Lin

Chih-Feng Lin

Wen-Yueh Hsieh

Disclosed is a variable-frequency power controller. The controller includes a power pin, a ground pin, a driving pin, a voltage sensing pin, and a loading voltage sensing pin, and is in collocation with a rectification unit, an inductor unit, a switch unit, an output unit, a voltage sensing unit, and a loading voltage sensing unit to implement a variable-frequency power control of power conversion. The controller performs one of the burst mode, valley switch mode, quasi-resonance (QR) mode, conduction mode, and peak loading mode based on a wide range of loading level. In particular, the loading level covered by the present invention includes the ultra-light, light, middle, full, and over-heavy loading, and the features of power saving, low switching loss, operation safety are thus achieved. Further, any over design employed to meet the wide range of loading level is prevented.

Variable-frequency power controller

Disclosed is a method of controlling a time parameter performed by a power controller having a power pin, a ground pin, a driving pin, a time parameter selecting pin, a feedback pin, and a current sensing pin. The power controller is in collocation with a rectification unit, a transformer, a switch unit, a power output unit, and a feedback unit. A Pulse Width Modulation (PWM) frequency of a driving signal, an Over-Voltage Protection (OVP) delay time, and an Under-Voltage Protection (UVP) delay time are preset in the power controller. An external time parameter selecting signal is received through the time parameter selecting pin to dynamically update the PWM frequency, the OVP delay time, or the UVP delay time, thereby greatly increasing efficiency of power conversion and avoiding malfunction of OVP or UVP.

Method of controlling time parameter

Disclosed is a dynamic multi-functional power controller in collocation with a primary side coil, a switching unit, and a current sensing resistor, performing a power control process. An induced current is generated by a secondary side coil coupled with the primary side coil through electromagnetic interaction with a conduction current flowing through the primary side coil, and an output power is generated to supply an external load when the induced current flows through an output rectification unit and an output filter unit. The power control process includes detecting if any abnormal state occurs, stopping a driving signal, waiting for a period of time, and then re-sending the driving signal. Thus, the present invention provides protection for various kinds of peak loading, avoids high power state when an abnormal state is not resolved, and further reduces the average output power, thereby implementing power saving.

Dynamic mult-functional power controller

Disclosed is a dynamic regulation power controller having a work voltage input pin, a feedback voltage input pin, a driving voltage output pin, a current sensing input pin, and a regulation power input pin, and being in collocation with a switching unit, an input power processing unit, a transformer, a current sensing resistor, a power regulation unit, an output rectification unit, and an output capacitor for converting an input AC voltage into an output voltage for supplying a load. In particular, the driving voltage and the driving current are dynamically adjusted according to the feedback voltage and the current sensing signal, thereby greatly increasing efficiency of power conversion and Electromagnetic Interference (EMI).

Dynamic regulation power controller

A power controller in collocation with a rectification unit, a transformer, a switching unit, a current sensing resistor, an output rectification unit, and an output capacitor is disclosed, and includes a working voltage pin, a ground pin, a PWM driving pin, a current sensing pin, and a load feedback pin for converting an external AC input power into an output power to supply a load. In particular, the power controller simultaneously performs active detection on load power to provide overload protection. Specifically, a load feedback signal related to a load power and a threshold load voltage representative of a preset threshold load power is compared, and a power counter representative of a calculated load power is increased by one, decreased by one, or kept without change according to the comparison result. Then, the power counter is employed to determine whether an overload abnormal event occurs.

Power controller of load power detection

Disclosed is a power control device suitably applied to the field of driving a microelectronic element like MOSFET. Based on Miller plateau voltage of the microelectronic element such as MOSFET, the power control device can dynamically adjust driving capability and set a driving voltage so as to control and balance turn-on loss and switch loss, and further achieve an optimal average efficiency, particularly, for selecting or replacing the microelectronic element like MOSFET. Also, an electronic system provided with the power control device effectively solves the problem of Electromagnetic Interference (EMI) imposed on peripheral devices.

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Taipei, Taiwan

Tsu-Huai Chan