Abstract: A primary-side controller comprises a feedback (FB) terminal coupled to a light-receiving element of a photocoupler so as to receive a feedback signal from the photocoupler, and a current detection (CS) terminal that receives a current detection signal that corresponds to a voltage drop across a sense resistor RS. The primary-side controller includes a current mode modulator that generates a control pulse based on the voltage at the FB terminal and the voltage at the CS terminal. The primary-side controller is configured to be switchable between a normal mode and a burst mode. When the electrical state of the DC/DC converter satisfies a predetermined condition, a burst mode adjustment circuit inhibits transition to the burst mode, or otherwise forces transition from the burst mode to the normal mode.

Abstract: A power supplying module that can be reduced in size is provided. The power supplying module includes a module body, and a lead-in unit provided on one surface of the module body. The lead-in unit includes a plate unit that fixes at least one sealing tube to the one surface of the module body, and at least one circumference holding unit that holds a circumference of the corresponding sealing tube. The plate unit is provided with, in a longitudinal direction of the one surface of the module body, a plurality of cable insertion holes, and a plurality of positioning portions that position the plurality of circumference holding units to the corresponding cable insertion holes.

Abstract: A synchronous rectification controller configured to control a synchronous rectification transistor is provided on the secondary side of an insulated synchronous rectification DC/DC converter. A DRAIN pin receives the drain voltage VDS2 of the synchronous rectification transistor. A pulse generator generates a pulse signal S11 based on the voltage at the DRAIN pin. A driver drives the synchronous rectification transistor based on the pulse signal S11. Upon detecting an open-circuit fault of the DRAIN pin, an abnormality detection circuit asserts an abnormality detection signal S13.

Abstract: An insulated DC/DC converter includes: a transformer; a switching transistor; a rectifier circuit; a photocoupler; a feedback circuit configured to drive a light emitting element of the photocoupler such that an output voltage of the DC/DC converter approaches a target voltage; a primary side controller having a feedback terminal which is connected to a light receiving element of the photocoupler and receives a feedback signal from the photocoupler, a zero current detection terminal which receives a zero current detection signal corresponding to a voltage generated at one end of an auxiliary winding of the transformer, and a pulse modulator of a quasi-resonant mode configured to generate a pulse signal depending on the feedback signal and the zero current detection signal; and a starting control circuit which, in start-up of the DC/DC converter, electrically affects the zero current detection terminal such that an OFF time of the switching transistor lengthens.

Abstract: An isolated synchronous rectification type DC/DC converter, includes: a transformer including primary and secondary windings; a switching transistor connected to the primary winding; a synchronous rectifying transistor installed between the secondary winding and a ground line on the secondary side; a photocoupler including a light emitting device and a light receiving device; a feedback circuit driving the light emitting device such that an output voltage of the DC/DC converter approaches a target voltage; a primary side controller connected to the light receiving device and switching the switching transistor depending on feedback signal from the photocoupler; a synchronous rectification controller controlling the rectifying transistor; and a protection circuit including a temperature detection element, one end of the detection element connected to a drain of the rectifying transistor, the protection circuit configured to detect an overheated state of the rectifying transistor depending on a first signal gene

Abstract: A power supplying module that can be reduced in size is provided. The power supplying module includes a module body, and a lead-in unit provided on one surface of the module body. The lead-in unit includes a plate unit that fixes at least one sealing tube to the one surface of the module body, and at least one circumference holding unit that holds a circumference of the corresponding sealing tube. The plate unit is provided with, in a longitudinal direction of the one surface of the module body, a plurality of cable insertion holes, and a plurality of positioning portions that position the plurality of circumference holding units to the corresponding cable insertion holes.

Abstract: A primary-side controller comprises a feedback (FB) terminal coupled to a light-receiving element of a photocoupler so as to receive a feedback signal from the photocoupler, and a current detection (CS) terminal that receives a current detection signal that corresponds to a voltage drop across a sense resistor RS. The primary-side controller includes a current mode modulator that generates a control pulse based on the voltage at the FB terminal and the voltage at the CS terminal. The primary-side controller is configured to be switchable between a normal mode and a burst mode. When the electrical state of the DC/DC converter satisfies a predetermined condition, a burst mode adjustment circuit inhibits transition to the burst mode, or otherwise forces transition from the burst mode to the normal mode.

Abstract: An insulated synchronous rectification DC/DC converter is provided. A feedback circuit drives a light-emitting element of a first photocoupler such that the output voltage VOUT of the DC/DC converter approaches a target voltage. A primary side controller is coupled to a light-receiving element of the first photocoupler, so as to switch on and off a switching transistor according to a feedback signal VFB. A synchronous rectification controller controls a synchronous rectification transistor. Upon detecting the occurrence of a switching-incapable state in the synchronous rectification transistor, a protection circuit instructs the primary side controller to stop the switching operation of the switching transistor.

Abstract: A synchronous rectification controller is arranged on the secondary side of an insulated synchronous rectification DC/DC converter. The synchronous rectification controller controls a synchronous rectification transistor M. An automatic shutdown circuit judges, based on the voltage VDS across the synchronous rectification transistor, whether the operation mode of a primary-side controller is a burst mode or a non-burst mode. When judgment has been made that the operation mode is the burst mode, the automatic shutdown circuit instructs a driver to suspend the switching of the synchronous rectification transistor M.

Abstract: An image processing device includes: a parallax control processing section performing an image processing for modifying a parallax magnitude, on each of a plurality of parallax images obtained through shooting from a plurality of respective view point directions different from one another, with use of shooting information related to a shooting condition for each of the parallax images.

Abstract: A connector apparatus which can keep an electrical connection between signal pins in good condition; when a male member and female member are coupled together, first bumps of a first contact portion and second bumps of a second contact portion are brought into contact with each other, electrically connecting the first signal pins and second signal pins with each other. Measures are taken to bring tops and ridge lines of the second bumps into contact with lateral faces of the first bumps. Also, the first signal pins and second signal pins are configured to be pivotable. During connection, contact area is increased by contact between the lateral faces of the first bumps and the tops and ridge lines of the second bumps, causing rubbing between the lateral faces and the tops and ridge lines, and thereby pushing aside and rubbing off sticking spatter, oxide films, contamination, and the like.

Abstract: A synchronous rectifying controller on secondary side of insulating synchronous rectifying converter to control synchronous rectifying transistor, comprising: first comparator to compare drain voltage of the transistor with first negative threshold voltage, and assert set signal based on the comparison of them; second comparator to compare drain voltage with second negative threshold voltage, and assert reset signal based on the comparison of them; third comparator to compare drain voltage with third positive threshold voltage, and assert release signal based on the comparison of them; control circuit set in response to the assertion of the set signal and to adjust control pulse to have ON level, and reset in response to the assertion of the reset signal and to adjust the control pulse to have OFF level; and driver to drive the transistor, wherein set operation of the control circuit is inhibited until the release signal is asserted.

Abstract: A first capacitor and an auxiliary power supply are provided to a secondary side of an insulated synchronous rectification DC/DC converter, in addition to a synchronous rectification transistor and a secondary-side controller. One end of the first capacitor is connected to a first node that connects the synchronous rectification transistor and a secondary winding. The auxiliary power supply charges the first capacitor using the voltage VOUT supplied via the output line, so as to stabilize the voltage across the first capacitor. The ground voltage is supplied to the secondary-side controller via the first node. Furthermore, the power supply voltage is supplied to the secondary-side controller via the other end of the first capacitor.

Abstract: A control circuit used in a switching converter having a coil, a switching transistor, and a detection resistor, includes: a current detection terminal configured to receive a detection voltage obtained by superimposing a voltage detection signal on a current detection signal; a sample hold circuit configured to sample-hold the detection voltage in an OFF period of the switching transistor to generate a sample hold voltage; a variable amplifier configured to amplify a difference between the sample hold voltage and the detection voltage; a duty controller configured to generate a pulse modulation signal; a driver configured to control the switching transistor based on the pulse modulation signal; and an overcurrent protection circuit configured to compare the detection voltage with a predetermined threshold voltage and change the pulse modulation signal to an OFF level of a switching transistor when the detection voltage is identical to the predetermined threshold voltage.

Abstract: A synchronous rectifier controller is provided on a secondary side of an insulation-type synchronous DC/DC converter and controls the synchronous rectifier transistor. A driver circuit controls the synchronous rectifier transistor. A photo coupler connection terminal is coupled to an input side of the photo coupler. An error amplifier amplifies an error between a voltage detection signal according to an output voltage of the DC/DC converter and its target voltage, and to draw a current according to the error from an input side of the photo coupler via the photo coupler connection terminal.

Abstract: A connector apparatus which can keep an electrical connection between signal pins in good condition; when a male member and female member are coupled together, first bumps of a first contact portion and second bumps of a second contact portion are brought into contact with each other, electrically connecting the first signal pins wand second signal pins with each other. Measures are taken to bring tops and ridge lines of the second bumps into contact with lateral faces of the first bumps. Also, the first signal pins and second signal pins are configured to be pivotable. During connection, contact area is increased by contact between the lateral faces of the first bumps and the tops and ridge lines of the second bumps, causing rubbing between the lateral faces and the tops and ridge lines, and thereby pushing aside and rubbing off sticking spatter, oxide films, contamination, and the like.

Abstract: A male member and tool changer for downsizing and preventing damage to proximity sensors; a male member includes a cam adapted to pivot between an engagement position at which the cam engages with a lock pin of a female member and a disengagement position at which the cam moves out of the engagement, and a cylinder unit adapted to pivot the cam between the engagement position and the disengagement position. A first proximity sensor and the second proximity sensor are assembled onto a cylinder sidewall of the cylinder unit and first and second detection surfaces of the proximity sensors are revealed in a cylinder chamber. The first detection surface is placed at a position facing on a piston when the cam is located at the disengagement position and the second detection surface is placed at a position facing on the piston when the cam is located at the engagement position.

Abstract: An external circuit element RSET is connected in use to an SET terminal. A synchronous rectification controller generates a pulse signal S1 based on a control time determined according to the state of the SET terminal. A driver switches on and off the synchronous rectification transistor according to the pulse signal S1. An abnormal state detection circuit is capable of detecting an open-circuit state and/or a short-circuit state that can occur in the SET terminal. When the abnormal state detection circuit detects such an open-circuit state and/or short-circuit state, the abnormal state detection circuit asserts a detection signal S11. When the detection signal S11 is asserted, a primary-side controller arranged on the primary side of the DC/DC converter is instructed to suspend the switching operation of a switching transistor.

Abstract: A feedback circuit includes: an input terminal which receives a voltage detection signal corresponding to an output voltage of a DC/DC converter; an output terminal connected to an input side of the photo coupler; a ground terminal; a shunt regulator configured to amplify an error between the voltage detection signal and its target voltage and pull up a first current corresponding to the error from the input side of the photo coupler via the output terminal; and a protection circuit configured to pull up a second current from the input side of the photo coupler via the output terminal when an abnormality of the secondary side of the DC/DC converter is detected. The feedback circuit is packaged into a single module.

Abstract: A secondary-side module comprises: a synchronous rectification controller that controls a synchronous rectification transistor; and a shunt regulator that generates a current that corresponds to the difference between an output voltage VOUT of a DC/DC converter and the target value of the output voltage, which are housed in a single package. The multiple pins to be connected to the shunt regulator are all laid out along a first side of the package.