摘要:
A charge pump DC/DC converter circuit of the present invention includes: a monitor circuit that detects a potential difference between terminals of a semiconductor switch that turns on during a first period, so as to output a determining signal corresponding to the potential difference; and each of drive circuits that outputs a drive signal to a semiconductor switch that turns on during a first period, in response to the determining signal. The drive signal increases the on-resistance of the semiconductor switch in proportion to the detected potential difference.
摘要:
A flow rate verification failure diagnosis apparatus is applied to a gas supply pipe system including flow rate control devices and a flow rate verification unit for detecting flow rate abnormality by measuring flow rate of each of the flow rate control devices on the basis of pressure measured by a pressure measurement device. The flow rate verification failure diagnosis apparatus comprises a failure diagnosis device having a mode to diagnose a failure in the pressure measurement device at a time of the flow rate verification unit detecting the flow rate abnormality, thereby the reliability of flow rate verification can be enhanced.
摘要:
There is provided a power-supply platform IC for realizing a parameter-deciding power-supply circuit, which, in order to decide a parameter of a power-supply circuit that supplies power to an electronic circuit IC (load), is connected to the electronic circuit IC (load) in place of the power-supply circuit. The power-supply platform IC includes: one or more transistor arrays that include a plurality of transistors operable as switching transistors; and a selecting circuit for selecting a transistor to be operated as a switching transistor from among the plurality of transistors, so as to control a size of the transistor that operates as a switching transistor, wherein the selecting circuit varies the size of the transistor as a parameter of the power-supply circuit, according to an external command.
摘要:
The present invention is a charge pump circuit provided as a charge pump DC/DC circuit for reducing the in-rush current in an initial operation of a charge pump operation. The charge pump DC/DC converter is realized using a conventional charge pump SW circuit, without any modification to the charge pump SW circuit portion. In the initial operation of the charge pump operation, a predetermined pre-set voltage is inputted that increases with time. With a feedback circuit provided in the charge pump DC/DC converter, charging of output capacitor C of power supply voltage VIN is allowed if the output voltage is below the pre-set voltage, and is disallowed if the output voltage exceeds the pre-set voltage. By setting a pattern of increase of the pre-set voltage during manufacture or use, the rate of increase of the output voltage can be reduced.
摘要:
A Hall device biasing circuit includes a plurality of terminals for applying a bias voltage to a plurality of Hall devices connected in series, respectively. A magnetism detection circuit includes a plurality of Hall devices connected in series; and a Hall device biasing circuit including at least a plurality of terminals corresponding to the plurality of Hall devices for supplying a constant bias voltage to each of the plurality of Hall devices respectively from the plurality of terminals.
摘要:
A flow rate verification failure diagnosis apparatus is applied to a gas supply pipe system including flow rate control devices and a flow rate verification unit for detecting flow rate abnormality by measuring flow rate of each of the flow rate control devices on the basis of pressure measured by a pressure measurement device. The flow rate verification failure diagnosis apparatus comprises a failure diagnosis device having a mode to diagnose a failure in the pressure measurement device at a time of the flow rate verification unit detecting the flow rate abnormality, thereby the reliability of flow rate verification can be enhanced.
摘要:
A flow controller and a flow controlling method are adapted to be released from conventional restrictions by using a novel type called a pulse shot type. A pulse shot (opening/closing operation of a first cutoff valve (12) and, after that, opening/closing operation of a second cutoff valve (17)) is repeated. Simultaneously, a volume flow Q of process gas exhausted from the second cutoff valve (17) per unit time on the basis of after-filling pressure and after-exhaust pressure of the process gas in a gas filling capacity (13) measure by a pressure sensor (14). Furthermore, a mode of the pulse shot is changed to control the volume flow Q of the process gas exhausted from the second cutoff valve (17) per unit time.
摘要:
A delay circuit in accordance with the present invention includes: a first I2L inverter and a second I2L inverter connected in cascade with each other; and a capacitor interposed between a ground and a connecting point of the first and second inverters, wherein: the delay circuit further includes a current adjusting circuit having at least one third I2L inverter with a plurality of output terminals at least one of which is connected to an input terminal of the third I2L inverter; and the current adjusting circuit is connected to adjust a charge current of the capacitor. The configuration provides a delay circuit of simple circuit structure that accounts for a small area in an integrated circuit and that is capable of introducing any given delay and also provides a ring oscillator incorporating the delay circuit.
摘要:
An IIL reset circuit includes an IIL inverter having input and output terminals, and a capacitor connected to the IIL inverter through the input terminal. When the IIL inverter is supplied with a constant current, it charges the capacitor through the input terminal, and outputs a reset pulse through the output terminal. The reset pulse has a pulse width that is determined based on both a current supplied to the capacitor, and on a capacitance of the capacitor.
摘要:
There is provided a power-supply platform IC for realizing a parameter-deciding power-supply circuit, which, in order to decide a parameter of a power-supply circuit that supplies power to an electronic circuit IC (load), is connected to the electronic circuit IC (load) in place of the power-supply circuit. The power-supply platform IC includes: one or more transistor arrays that include a plurality of transistors operable as switching transistors; and a selecting circuit for selecting a transistor to be operated as a switching transistor from among the plurality of transistors, so as to control a size of the transistor that operates as a switching transistor, wherein the selecting circuit varies the size of the transistor as a parameter of the power-supply circuit, according to an external command.