Patent
Overheat protection circuit and power supply for an integrated circuit
Atsushi Igarashi,Takashi Imura,Masahiro Mitani,Takao Nakashita,Shoichi Sugiura,正宏 三谷,貴雄 中下,敦史 五十嵐,多加志 井村,正一 杉浦 +9 more
TLDR
In this paper, a current generation circuit with a metal oxide semiconductor (MOS) transistor whose gate and drain terminals are connected to each other and which operates in a weak inversion region is presented.Abstract:
PROBLEM TO BE SOLVED: To provide a power supply integrated circuit including an overheat protection circuit with a high detection accuracy. SOLUTION: The overheat protection circuit includes a current generation circuit which is provided with a first metal oxide semiconductor (MOS) transistor whose gate and drain terminals are connected to each other and which operates in a weak inversion region; a second MOS transistor whose gate terminal is connected to that of the first MOS transistor and which has a conductivity type identical to that of the first MOS transistor and operates in a weak inversion region; and a first resistive element connected to the source terminal of the second MOS transistor, and a comparator which compares the reference voltage having positive temperature characteristics with a temperature voltage having negative temperature characteristics, both of which are obtained based on a current generated by the current generation circuit. COPYRIGHT: (C)2011,JPO&INPITread more
Citations
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References
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Journal ArticleDOI
The Art of Electronics
TL;DR: The new Art of Electronics retains the feeling of informality and easy access that helped make the earlier editions so successful and popular, and is an indispensable reference and the gold standard for anyone, student or researcher, professional or amateur, who works with electronic circuits.
Patent
Reference voltage generator circuit having temperature and process variation compensation and method of manufacturing same
TL;DR: In this paper, a reference voltage generator circuit for providing and regulating the reference voltage is presented. But the second sub-circuit is configured to generate a compensation voltage that varies inversely to variations in the bias voltage to compensate for the variations in bias voltage.
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Polar modulator and a method for modulation of a signal
TL;DR: In this article, a polar modulator contains a phase-locked loop which is designed to emit a radio-frequency signal at one frequency to one output, with the frequency being derived from the reference signal and from a phase modulation signal at a control input of the phase locked loop.
Patent
Overheat-sensing circuit and semiconductor integrated circuit device having the same
Akio Kojima,Hiroyuki Ban +1 more
TL;DR: In this article, the reference voltage generation circuit generates a limited voltage based on the power supply voltage, and outputs a reference voltage in accordance with the limited voltage when the voltage is outside a predetermined voltage range.
Patent
Constant voltage circuit
Hiroyuki Suwabe,裕之 諏訪部 +1 more
TL;DR: In this paper, a constant voltage circuit is provided with terminals 11, 12, a depression type TR 13 connecting one end of a current passage between its source and drain to the terminal 11, connecting its gate to a terminal 12 and capable of generating limited voltage VLIM, a reference voltage generation circuit 14 allowed to be driven by the voltage VLIIM and able of generating reference voltage Vthis paper with the divided voltage VKEN.