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Researchers Submit Patent Application, "Driving Circuit, Driving Module and Motor Driving Apparatus", for Approval

June 18, 2014



By a News Reporter-Staff News Editor at Electronics Newsweekly -- From Washington, D.C., VerticalNews journalists report that a patent application by the inventors HEO, Chang Jae (Suwon, KR); PANG, Sung Man (Suwon, KR), filed on February 22, 2013, was made available online on June 5, 2014.

The patent's assignee is Samsung Electro-mechanics Co., Ltd.

News editors obtained the following quote from the background information supplied by the inventors: "The present invention relates to a driving circuit, a driving module, a motor driving apparatus driving a power semiconductor device.

"In a driving circuit of a general power semiconductor device, in the case in which a self turn-off type power semiconductor device such as an insulated gate bipolar transistor (IGBT), or the like, is used, as disclosed in the following Related Art Document, a gate driving signal for driving the power semiconductor device is provided to a gate of the power semiconductor device. However, rated power required for driving the power semiconductor devices is different for each manufacturer, such that it is difficult to adjust a turn-on and turn-off speed of the power semiconductor device."

As a supplement to the background information on this patent application, VerticalNews correspondents also obtained the inventors' summary information for this patent application: "An aspect of the present invention provides a driving circuit, a driving module, a motor driving apparatus capable of adjusting a driving current driving a power semiconductor device.

"According to an aspect of the present invention, there is provided a driving circuit including: a driving unit including a plurality of drivers and selecting a corresponding driver among the plurality of drivers according to a selection signal to determine a current level of a driving signal for driving a semiconductor device; a timing controlling unit detecting a phase shift time of the driving signal transferred to the semiconductor device and comparing the detected time with a preset reference time to control the phase shift time of the driving signal; and a driving controlling unit providing the selection signal for selecting a driver to be driven among the plurality of drivers of the driving unit according a control signal from the outside and a timing control signal of the timing controlling unit.

"The timing controlling unit may include: a detector detecting the phase shift time of the driving signal transferred to the semiconductor device; a setter setting the reference time; and a comparator comparing the phase shift time detected by the detector with the reference time set by the setter.

"The timing controlling unit may detect at least one of a rising time and a falling time of the driving signal.

"The detector may detect the at least one of the rising time and the falling time of the driving signal transferred to the semiconductor device, the setter may set at least one of a reference rising time and a reference falling time, and the comparator may compare the at least one of the rising time and the falling time detected by the detector with the at least one of the reference rising time and the reference falling time set by the setter and provides a comparison result.

"The driving unit may further include a basic driver operated according to a control signal of the driving controlling unit.

"The plurality of drivers may be connected to one another in parallel between a driving power terminal and a ground and respectively include at least two transistors stacked between the driving power terminal and the ground.

"The two transistors may be a P-channel metal oxide semiconductor (PMOS) transistor and an N-channel MOS (NMOS) transistor.

"The basic driver may include a PMOS transistor and an NMOS transistor stacked between a driving power terminal and a ground.

"According to another aspect of the present invention, there is provided a driving module including: at least one driving circuit including a driving unit including a plurality of drivers and selecting a corresponding driver among the plurality of drivers according to a selection signal to determine a current level of a driving signal for driving a semiconductor device, a timing controlling unit detecting at least one of a rising time and a falling time of the driving signal transferred to the semiconductor device, comparing the at least one of the detected rising time and falling time with at least one of a preset reference rising time and a preset reference falling time, and transferring a comparison result to a driving controlling unit, and the driving controlling unit providing the selection signal for selecting a driver to be driven among the plurality of drivers of the driving unit according a control signal from the outside and a timing control signal of the timing controlling unit; and a switch unit including a semiconductor device switched on or off according to the driving signal of the at least one driving circuit.

"The switch unit may include at least two semiconductor devices stacked between an operation power terminal and a ground.

"The at least one driving circuit may include first and second driving circuits driving the at least two semiconductor devices, respectively.

"According to another aspect of the present invention, there is provided a motor driving apparatus including: a driving circuit group including a plurality of driving circuits, each driving circuit including a driving unit including a plurality of drivers and selecting a corresponding driver among the plurality of drivers according to a selection signal to determine a current level of a driving signal for driving a semiconductor device, a timing controlling unit detecting at least one of a rising time and a falling time of the driving signal transferred to the semiconductor device, comparing the at least one of the detected rising time and falling time with at least one of a preset reference rising time and a preset reference falling time, and transferring a comparison result to a driving controlling unit, and the driving controlling unit providing the selection signal for selecting a driver to be driven among the plurality of drivers of the driving unit according a control signal from the outside and a timing control signal of the timing controlling unit; and an inverter including inverter arms, each inverter arm including a semiconductor device switched on/off according to a driving signal from the plurality of driving circuits of the driving circuit group to drive a motor.

"The inverter may include three-phase inverter arms respectively having at least two power switching devices stacked therein.

"The driving circuit group may include: a plurality of high side driving circuits driving high side power switching devices among the stacked at least two power switching devices of the three-phase inverter arms, respectively; and a plurality of low side driving circuits driving low side power switching devices among the stacked at least two power switching devices of the three-phase inverter arms, respectively.

BRIEF DESCRIPTION OF THE DRAWINGS

"The above and other aspects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

"FIG. 1 is a schematic configuration diagram of a driving circuit according to an embodiment of the present invention;

"FIGS. 2 through 4 are graphs showing operating waveforms of a timing controlling unit used in the driving circuit according to the embodiment of the present invention;

"FIG. 5 is a schematic circuit diagram of a driving unit used in the driving circuit according to the embodiment of the present invention;

"FIGS. 6 and 7 are graphs showing operating waveforms of a driving controlling unit used in the driving circuit according to the embodiment of the present invention;

"FIG. 8 is a graph showing operating waveforms of main components of the driving circuit according to the embodiment of the present invention;

"FIG. 9 is a schematic configuration diagram of a driving module according to an embodiment of the present invention; and

"FIG. 10 is a schematic configuration diagram of a motor driving apparatus according to an embodiment of the present invention."

For additional information on this patent application, see: HEO, Chang Jae; PANG, Sung Man. Driving Circuit, Driving Module and Motor Driving Apparatus. Filed February 22, 2013 and posted June 5, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=4495&p=90&f=G&l=50&d=PG01&S1=20140529.PD.&OS=PD/20140529&RS=PD/20140529

Keywords for this news article include: Electronics, Semiconductor, Samsung Electro-mechanics Co. Ltd..

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Source: Electronics Newsweekly


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