G - Physics – 05 – F
Patent
G - Physics
05
F
G05F 5/04 (2006.01) H02H 5/04 (2006.01) H02H 7/00 (2006.01) H03K 17/082 (2006.01) H03K 17/08 (2006.01)
Patent
CA 2062845
A switching-type voltage regulator of this invention comprises a voltage control section for generating a stabilized voltage by controlling a voltage supply period from input side to output side, and a protective device. The protective device monitors the temperature of a certain component part or parts of the voltage control section and convert the temperature into a voltage to compare with the reference voltage generated by a reference voltage source, and brings the output of the voltage control section to a halt in accordance with the result of comparison. The output of the voltage control section is brought to a halt regardless of the presence of output abnormalcy when the temperature of the component part or parts monitored exceeds a certain level. As the monitoring means, it is preferable to utilize the electrical characteristic of semiconductor p-n junction changing with temperature, and a semiconductor diode is more preferable. A preferable halting means is a 2-input AND circuit where a signal representing the result of the comparing means are inputted into one of the input terminals, and a switching control signal to the other to control a switching element. Preferably, a latching means is installed between the comparing means and halting means to maintain a halted condition.
Corporation Nec
Smart & Biggar
LandOfFree
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