Abstract: A DC-DC converter has switching means which generates a continuous switching voltage having a specified period from an input voltage and outputs the generated switching voltage, output voltage generating means which receives the switching voltage at an inductor and generates an output voltage obtained by rectifying and smoothing a voltage generated in the inductor, lamp signal generating means which generates a lamp signal and outputs the generated lamp signal, and control means which performs an arithmetic operation using a current signal relative to a current flowing in the inductor, an error signal relative to the output voltage, and the lamp signal to generate a control signal for controlling the operation of the switching means and outputs the generated control signal to the switching means.

Abstract: A current sensing circuit for use in a switching regulator having a high-side switch. The current sensing circuit includes a first sensing circuit coupled to the high-side switch for measuring current flowing in a positive direction through the high-side switch. The first sensing circuit includes a first replica device for generating a current which is a scaled version of the positive current flowing through the high-side switch. The current sensing circuit further includes a second sensing circuit coupled to the high-side switch for measuring current flowing in a negative direction through the high-side switch. The second sensing circuit includes a second replica device for generating a current which is a scaled version of the negative current flowing through the high-side switch.

Abstract: For controlling DC-DC converters conforming to voltage mode control system and current mode control system, in multi-output power supply, first converter section 2 is configured that first detection circuit 31 outputs first control signal, that first oscillation circuit 32 outputs first triangular wave signal and clock signal, and that first pulse-width modulation circuit 33 drives first switch by comparing first control signal with first triangular wave signal. Second converter section 4 is configured that second detection circuit 34 outputs second control signal, that second oscillation circuit 35 outputs second triangular wave signal synchronized with clock signal, that current detection circuit 36 outputs current signal of second inductor, and that second pulse-width modulation circuit 37 turns ON second switch in synchronization with clock signal and turns OFF second switch by calculating or comparing second control signal, the second triangular wave signal and current signal.

Abstract: A method of regulating an output voltage by utilizing a switching regulator, where the switching regulator includes a high side switch, a low side switch having an active diode, a controller coupled to the high side switch and the low side switch, and a current measuring circuit coupled to the high side switch.

Abstract: A current detection circuit of the present invention has a switching device 1; an auxiliary switching device 2; an offset voltage source comprising an offset resistor device 7 and a current source circuit 8; a compensation circuit, comprising a differential amplifier 4 and a compensation transistor 5, for adjusting the output current of the auxiliary switching device 2 so that the potential obtained by subtracting the voltage drop across the offset resistor device 7 from the output potential of the auxiliary device 1 is equal to the output potential of the auxiliary switching device 2, being configured that the detection level of the current flowing in the switching device 1 is shifted by an offset amount.

Abstract: A switching power supply circuit in accordance with the present invention is configured such that a switched-capacitor circuit is provided between an output terminal for outputting an output voltage and an input of an error amplification circuit, the output signal from the error amplification circuit for amplifying the error between a DC output voltage and a reference voltage is compared with a reference signal by a pulse width modulation circuit, and a voltage conversion section is turned ON/OFF continuously using the output signal of a pulse width modulation circuit while having a predetermined period with respect to an input voltage.

Abstract: An active diode including a NMOS transistor having a source terminal, a drain terminal, a gate terminal and a back gate terminal, where the source terminal is connected to the back gate terminal and forms the anode terminal of the active diode, and the drain terminal forms the cathode terminal of the active diode. The active diode further includes an offset bias voltage source having a first terminal and a second terminal; and an amplifier having a non-inverting input terminal and an inverting input terminal, and an output terminal, where the inverting input terminal is connected to the drain terminal of the transistor, the non-inverting input terminal is connected to the first terminal of the offset bias source, the output terminal is connected to the gate terminal of the transistor, and the second terminal of the offset bias source is connected to the source terminal of the transistor.

Abstract: A power supply switching regulator including a common terminal; an input terminal for supplying a direct current input; an output terminal; a recirculating diode having a first terminal connected to the common terminal; an inductor having a first terminal connected to a second terminal of the recirculation diode and a second terminal connected to the output terminal; a capacitor having a first terminal connected to the output terminal and a second terminal connected to the common terminal; a switch connected between the input terminal and the first terminal of the inductor, the switch operable for switching between an ON state in which the direct current input is coupled to the inductor, and an OFF state in which the direct current input is isolated from the inductor; and a controller coupled to the switch and operable for controlling the amount of time the switch is in the ON state and the OFF state such that the duration of time the switch is in the ON state is inversely proportional to the difference betwe

Abstract: In order to increase the transient response speed of a DC-to-DC converter capable of voltage step-up and voltage step-down, to which a DC voltage is input from a battery or the like and from which a controlled DC voltage is supplied to a load, a first voltage E1 lower than an output setting voltage Eset by a predetermined voltage is defined and is compared with a DC output voltage Eo by a first comparator, and the result of the comparison is output. @a A second voltage E2 lower than a DC input voltage Ei by a predetermined voltage is defined and is compared with the DC output voltage Eo by a second comparator 133, and the result of the comparison is also output. When the results of the comparisons are represented by Eo<E1 and Eo<E2, a switch connected between the input and the output is turned ON. This configuration greatly increases the response speed at the time when the DC output voltage Eo reaches the output setting voltage Eset.

Abstract: In order to increase the transient response speed of a DC-to-DC converter capable of voltage step-up and voltage step-down, to which a DC voltage is input from a battery or the like and from which a controlled DC voltage is supplied to a load, a first voltage E1 lower than an output setting voltage Eset by a predetermined voltage is defined and is compared with a DC output voltage Eo by a first comparator, and the result of the comparison is output. @a A second voltage E2 lower than a DC input voltage Ei by a predetermined voltage is defined and is compared with the DC output voltage Eo by a second comparator 133, and the result of the comparison is also output. When the results of the comparisons are represented by Eo<E1 and Eo<E2, a switch connected between the input and the output is turned ON. This configuration greatly increases the response speed at the time when the DC output voltage Eo reaches the output setting voltage Eset.

Abstract: The invention provides an assembly structure for facilitating the assembly of laminated single cells, for reducing the possibility of gas leakage after repeated cycles of temperature elevation and reduction, and for preventing the reduction of generating efficiency of cells due to the gas leakage. A plate-shaped electrochemical cell 9 made of a ceramic material with a through hole 9a formed therein is held by a holding member 1. The member 1 is made of a ceramic material and has a plate-shaped main body la of a shape of a flat plate and a protruded portion 1b protruding from the main body 1a. A first supply hole 2A for supplying one gas and a second supply hole 2B for supplying the other gas are formed in the holding member 1. The main body 1a has a sealing surface 1c against the one main face 9a of the cell 9 while the protruded portion 1b is inserted into the through hole 9a.