# US 10,122,298 B2 · Semiconductor device and power conversion device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,122,298 B2 - Document ID: US10122298B2 - Status: Granted - Kind: B2 - Application number: 15/658,460 - Filed: 2017-07-25 - Published: 2018-03-01 - Granted: 2018-11-06 - Earliest claimed: 2016-09-01 - Assignees: Fuji Electric Co., Ltd. - Applicants: Fuji Electric Co., Ltd. - Inventors: Hirotoshi Kaneda - Web page: https://patentgrep.com/patent/US10122298B2 ## CPC - H02M 7/5395: by pulse-width modulation - H02M 1/08: Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters - H03K 17/161: {in field-effect transistor switches} - H03K 17/166: {Soft switching} - H02M 7/5387: in a bridge configuration - H02P 27/08: with pulse width modulation - H10W 72/5445: {being orthogonal to a side surface of the chip, e.g. parallel arrangements} - H10W 72/5475: {multiple bond wires connected to common bond pads at both ends of the wires} - H10W 72/926: {Multiple bond pads having different sizes} - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) - H03K: PULSE TECHNIQUE (measuring pulse characteristics G01R; modulating sinusoidal oscillations with pulses H03C; transmission of digital information H04L; discriminator circuits detecting phase difference between two signals by counting or integrating cycles of oscillation H03D3/04; automatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses where the type of generator is irrelevant or unspecified H03L; coding, decoding or code conversion, in general H03M) - H02P: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract A semiconductor device includes a unipolar switching element having a drain terminal, a gate terminal, and a source terminal, wherein a serial connection body of a capacitor and a resistor is connected between the drain terminal and the gate terminal. ## Claims ### Claim 1 A power conversion device including a semiconductor device, wherein the semiconductor device comprises: a switching element comprising a high voltage side terminal, a control terminal, and a low voltage side terminal; a serial connection body comprising a capacitor and a resistor connected between the high voltage side terminal and the control terminal, wherein the capacitor and the resistor in the serial connection body are set as a time constant that suppresses resonance characteristics that occur due to an inductance component and a capacitance component present in a circuit to which the semiconductor device is connected and an output capacitance parasitic between the high voltage side terminal and the low voltage side terminal of the switching element. ### Claim 2 (depends on 1) The power conversion device according to claim 1, wherein a capacitance of the capacitor in the serial connection body is equal to or greater than a feedback capacitance that is parasitic between the high voltage side terminal, and wherein the control terminal of the switching element and is set to be ten times or less the feedback capacitance. ### Claim 3 (depends on 1) The power conversion device according to claim 1, wherein the semiconductor device further comprises: a package including the switching element therein; and a substrate configured to support the switching element in the package, wherein the capacitor and the resistor in the serial connection body are arranged on the substrate. ### Claim 4 (depends on 1) The power conversion device according to claim 1, wherein the semiconductor device further comprises: an external connection control terminal that allows the control terminal of the switching element to be drawn outside of the package and to be connected to an external circuit, wherein, in the package, a resistor is connected between the control terminal of the switching element and the external connection control terminal. ### Claim 5 (depends on 1) The power conversion device according to claim 1, wherein the semiconductor device further comprises: a bipolar switching element configured to perform a bipolar operation as the switching element; and a unipolar switching element configured to perform a unipolar operation as the switching element, wherein the serial connection body is connected between the high voltage side terminal and the control terminal of the bipolar switching element and between the high voltage side terminal and the control terminal of the unipolar switching element. ### Claim 6 (depends on 1) The power conversion device according to claim 1, wherein the semiconductor device further comprises: a switching element comprising a high voltage side terminal, a control terminal, and a low voltage side terminal; a package including the switching element therein; and two or more of each of an external connection high voltage side terminal that allows the high voltage side terminal to be drawn to the outside of the package and to be connected to an external circuit and an external connection control terminal that allows the control terminal to be drawn to the outside of the package and to be connected to an external circuit. ### Claim 7 (depends on 6) The power conversion device according to claim 6, wherein a serial connection body comprising a capacitor and a resistor is connected between the external connection high voltage side terminal and the external connection control terminal.