Patents Assigned to FSP Technology Inc.
  • Patent number: 7781986
    Abstract: The present invention includes a PWM unit, a switch unit, a resonance unit, a transformer, a feedback unit and a frequency control unit, wherein the switch unit obtains a DC power from a power source, the PWM unit produces a working cycle signal to drive the switch unit to convert the DC power into a pulse power and the resonance unit converts the pulse power into a driving power for providing to the transformer to convert thereof into an output power, characterized in that when the resonance unit is under a starting frequency and a working frequency higher than the starting voltage, a starting voltage gain and a working voltage gain respectively corresponding thereto are produced, wherein the starting voltage gain is larger than the working voltage gain, so that the larger starting voltage gain can produce the output power with higher voltage to smoothly initiate the lamp tube set.
    Type: Grant
    Filed: February 1, 2008
    Date of Patent: August 24, 2010
    Assignee: FSP Technology Inc.
    Inventors: Shih An Liang, Kuo-Hei Lee, Ken-Chuan Hsu
  • Patent number: 7764522
    Abstract: The present invention discloses a method and a circuit for controlling a start-up cycle of an integrated circuit in a circuit system. The method and circuit determine whether or not an input power of the circuit system and a bias voltage power of the integrated circuit have reached a normal operating voltage range to control the bias voltage power to produce a start-up cycle of the integrated circuit. The method and circuit also provides a protection mechanism for an overload of the circuit system overload, so that the integrated circuit can moderate surges and prevent damages.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: July 27, 2010
    Assignee: FSP Technology Inc.
    Inventor: Kuo-Fan Lin
  • Patent number: 7746006
    Abstract: The present invention discloses a protection architecture for a multi-lamp system, which applies to a multi-lamp driving system for driving a plurality of lamp loops. The present invention is characterized in that two opposite-phase loads of a loop are separately defined to be a first load and a second load, and that a voltage-division/detection loop is formed via cascading a first voltage-division element to a second voltage-division element and is coupled to between the first load and the second load to detect an abnormal current, wherein the second voltage-division element is coupled to a ground terminal, and wherein a signal-acquiring terminal is coupled to between the first voltage-division element and the second voltage-division element and acquires an abnormal voltage signal for a protection unit from the abnormal current, and wherein the protection unit detects the abnormal voltage signal and shuts off the driving system.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: June 29, 2010
    Assignee: FSP Technology Inc.
    Inventors: Shih An Liang, Kuo Hei Lee, Ken Chuan Hsu, Chien Chih Cher
  • Patent number: 7714689
    Abstract: A transformer structure includes an iron core set, a main bobbin, and two sub-bobbins. The main bobbin includes a primary winding area for winding a first coil, a main bobbin through hole longitudinally mounted in and penetrating through the main bobbin, and two assembling troughs respectively formed at two ends of the main bobbin through hole. The two sub-bobbins are respectively accommodated in the two assembling troughs and respectively include a secondary winding area for winding a second coil and a sub-bobbin through hole communicated with the main bobbin through hole for penetrating the iron core set. Therefore, the sub-bobbins are mounted in two extended assembling troughs of the main bobbin, the first coil is wound on the primary winding area at the outer side of the main bobbin, and the first coil is separated from the second coils not only by horizontal distance but also by the assembling troughs.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: May 11, 2010
    Assignee: FSP Technology, Inc.
    Inventor: Wen Sen Hsieh
  • Patent number: 7495875
    Abstract: A power abnormal protection circuit includes a power detection unit, a voltage drop correction unit, a drop out detection unit, a delay unit and a delay masking unit. By detecting an input power average value of a power supply occurring of a brown out condition can be determined. The power supply includes a power factor correction unit which has an output capacitor. By detecting the voltage of the output capacitor a drop out condition can be determined. When a power abnormal condition occurs all units of the power supply can be set off sequentially according to a delay time to protect circuit elements and a connecting computer.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: February 24, 2009
    Assignee: FSP Technology Inc.
    Inventor: Kuo-Fan Lin
  • Patent number: 7477025
    Abstract: The present invention discloses a power control circuit for adjusting light, which adopts both frequency modulation and amplitude modulation for the control and starts using the amplitude modulation control after the frequency change exceeds a predetermined limit range, such that the voltage and frequency for driving the lamp set fall within a range acceptable to the lamp set and minimize the effect of frequency interferences.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: January 13, 2009
    Assignee: FSP Technology Inc.
    Inventor: Chih-Jen Teng
  • Patent number: 7446637
    Abstract: A parent-child leadframe type transformer includes a ferrite core module, a child leadframe and a parent leadframe. The parent leadframe has a first opening and a second opening on both ends. The length of the second opening is greater than the length of the first opening along the same axial direction. A containing space is defined between the first and second openings. The child leadframe has a coil winding slot and a through hole for installing the ferrite core module. The axial length of the child leadframe falls between the first and second openings, such that the child leadframe and the ferrite core module can be passed through the second opening, but limited by the first opening. The child leadframe, ferrite core module and parent leadframe are positioned to define a parent-child type transformer structure for reducing the overall height and complying with the safety regulation standards.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: November 4, 2008
    Assignee: FSP Technology Inc.
    Inventors: Chi-Tsung Liang, Yu-Chun Chou, Chih-Hsien Liu
  • Patent number: 7394035
    Abstract: An anti-switch on/off device mounted on a power supplier, which is used for driving an electronic equipment, is provided for preventing an erroneous touch on the switch of the power supplier to avoid the power supplier from instantly stopping supplying power. The power supplier includes an electric connecting slot and a power switch on/off unit. The power switch on/off unit has, mounted thereon, a press control button for being pressed by the user to control power on/off. The present invention utilizes an anti-error cover covered on the electric connecting slot and the power switch on/off unit, wherein the anti-error cover has an electric connecting opening mounted thereon for passing therethrough the connection with the external power source and an accommodating space for accommodating the press control button, so that an erroneous touch on the switch and an instant power disconnection can be prevented without interfering a normal power input.
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: July 1, 2008
    Assignees: FSP Technology Inc., 3Y Power Technology (Taiwan) Inc.
    Inventor: Shao-Feng Lu
  • Patent number: 7392438
    Abstract: An automatic safety test system, which comprises a control interface of a control unit for controlling the switching of a switch in a server unit and automatically switching to a specified testing point of an electronic product, and connects a bus interface of the control unit to a plurality of testing instruments for sending the values measured by the testing instrument at the specified testing point to a communication interface record of the control unit through the bus interface. Therefore, the automatic safety test system of the invention can automatically test every specific safety testing item at each testing point of the electronic product, and thus further achieves the objectives of saving time, manpower and resources.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: June 24, 2008
    Assignee: FSP Technology Inc.
    Inventor: Jen-Yao Hu
  • Patent number: 7391626
    Abstract: A chop-wave control circuit includes a feedback unit, a ramp generation unit, a latchup unit and a voltage transformation unit that is used on a forward transformation circuit which includes at least a main output unit and at least one auxiliary output unit. The feedback unit captures a feedback signal from an output end of the auxiliary output unit to generate a slope regulation signal. The ramp generation unit alters the trigger time sequence of the latchup unit through the slope regulation signal to set an auxiliary flywheel switch ON or OFF. The voltage transformation unit detects potential variations of the latchup unit to set a chop-wave switch ON or OFF. By controlling the auxiliary flywheel switch and the chop-wave switch a power output cycle of the auxiliary output unit can be formed.
    Type: Grant
    Filed: June 8, 2007
    Date of Patent: June 24, 2008
    Assignee: FSP Technology Inc.
    Inventor: Kuo-Fan Lin