JP2018113777A - 半導体スイッチ制御装置 - Google Patents
半導体スイッチ制御装置 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 53
- 238000001514 detection method Methods 0.000 claims description 115
- 238000012790 confirmation Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 3
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- 230000000903 blocking effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/44—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to the rate of change of electrical quantities
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
- H02H5/041—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature additionally responsive to excess current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
- H02H7/1227—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters responsive to abnormalities in the output circuit, e.g. short circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0009—Devices or circuits for detecting current in a converter
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electronic Switches (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
【解決手段】半導体スイッチ制御装置1は、負荷電流のアナログ信号を検出し、検出したアナログ信号をデジタル信号に変換し、変換したデジタル信号に基づいて過電流を判定する制御部40と、負荷電圧のアナログ信号を検出し、検出したアナログ信号をデジタル信号に変換せずに当該アナログ信号に基づいて過電流を検出する短絡検出部50と、制御部40により判定された過電流の判定結果、又は、短絡検出部50により検出された過電流の検出結果に基づいてFET10を駆動する駆動部20とを備える。
【選択図】図1
Description
実施形態に係る半導体スイッチ制御装置1について説明する。半導体スイッチ制御装置1は、電源2から負荷部3に流れる過電流を検出した場合、電流を遮断して回路を保護する装置である。以下、半導体スイッチ制御装置1について詳細に説明する。
Vwh={r1/(r1+r3)}×E ・・・式(1)
次に、実施形態の変形例について説明する。半導体スイッチ制御装置1Aは、図9に示すように、FET10のドレイン端子とソース端子との間の電位差に基づいて短絡を検出してもよい。例えば、短絡検出部50Aは、FET10のドレイン端子とソース端子との間の電位差(以下、FET両端電圧という。)を検出する比較器54を備える。比較器54は、例えば、プラス入力端子54aと、マイナス入力端子54bと、出力端子54cとを備える。比較器54は、マイナス入力端子54bが抵抗R5を介してFET10のソース端子側に接続され、プラス入力端子54aが抵抗R6を介してFET10のドレイン端子側に接続され、出力端子54cが抵抗R1を介して比較器51のマイナス入力端子51bに接続される。比較器51は、比較器54からマイナス入力端子51bを介して入力したFET両端電圧のアナログ信号と、プラス入力端子51aから入力した基準電圧Vrefとを比較する。そして、比較器51は、FET両端電圧のアナログ信号が基準電圧Vref以上の場合、過電流を示すアナログの検出信号(遮断信号;ハイレベル信号)を駆動部20に出力する。また、比較器51は、FET両端電圧のアナログ信号が基準電圧Vref未満の場合、過電流でないことを示すアナログの検出信号(ローレベル信号)を駆動部20に出力する。このように、短絡検出部50Aは、FET10のドレイン端子とソース端子との間の電位差に基づいて短絡を検出してもよい。
2 電源
3 負荷部
10 FET(半導体スイッチ)
20 駆動部
30 電流センサ(判定部)
40 制御部(判定部)
50、50A 短絡検出部(検出部)
Claims (4)
- 電源から負荷部に流れる電流である負荷電流を通電又は遮断する半導体スイッチと、
前記負荷電流又は前記負荷部に印加される電圧である負荷電圧のアナログ信号を検出し、検出した前記アナログ信号をデジタル信号に変換し、変換した前記デジタル信号に基づいて過電流を判定する判定部と、
前記負荷電流又は前記負荷電圧のアナログ信号を検出し、検出した前記アナログ信号をデジタル信号に変換せずに前記アナログ信号に基づいて過電流を検出する検出部と、
前記判定部により判定された前記過電流の判定結果、又は、前記検出部により検出された前記過電流の検出結果に基づいて前記半導体スイッチを駆動する駆動部と、
を備えることを特徴とする半導体スイッチ制御装置。 - 前記判定部は、
前記負荷電流又は前記負荷電圧の前記デジタル信号と、前記負荷電圧が印加されてから経過した時間とに基づいて求められるジュール熱に応じて過電流を判定する請求項1に記載の半導体スイッチ制御装置。 - 前記検出部は、
前記負荷電流のアナログ信号が予め定められた基準電流以上の場合、又は、前記負荷電圧のアナログ信号が予め定められた基準電圧未満の場合、過電流を示す検出信号を前記駆動部に出力し、
前記負荷電流のアナログ信号が前記基準電流未満の場合、又は、前記負荷電圧のアナログ信号が前記基準電圧以上の場合、過電流でないことを示す検出信号を前記駆動部に出力する比較器を備える請求項1又は2に記載の半導体スイッチ制御装置。 - 前記検出部は、
前記過電流を示す前記検出信号を前記判定部に出力し、
前記判定部は、
前記検出部から出力された前記過電流を示す前記検出信号に基づいて、前記検出部に状態確認信号を出力し、
前記検出部は、
前記判定部から出力された前記状態確認信号に基づいて、前記過電流を検出したか否かを示す検出確認信号を前記判定部に出力し、
前記判定部は、
前記検出部から出力された前記検出確認信号に基づいて、前記検出部により検出された前記過電流の検出結果を判定する請求項3に記載の半導体スイッチ制御装置。
Priority Applications (4)
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JP2017002676A JP6837842B2 (ja) | 2017-01-11 | 2017-01-11 | 半導体スイッチ制御装置 |
US15/822,560 US10742017B2 (en) | 2017-01-11 | 2017-11-27 | Semiconductor-switch control device |
DE102018200129.4A DE102018200129A1 (de) | 2017-01-11 | 2018-01-08 | Steuervorrichtung für einen Halbleiterschalter |
CN201810021825.XA CN108306252B (zh) | 2017-01-11 | 2018-01-10 | 半导体开关控制装置 |
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JP2017002676A JP6837842B2 (ja) | 2017-01-11 | 2017-01-11 | 半導体スイッチ制御装置 |
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JP2018113777A true JP2018113777A (ja) | 2018-07-19 |
JP6837842B2 JP6837842B2 (ja) | 2021-03-03 |
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JP (1) | JP6837842B2 (ja) |
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CN110247375A (zh) * | 2019-07-04 | 2019-09-17 | 珠海格力电器股份有限公司 | 一种用于新能源汽车dc-dc过流保护的控制电路及控制方法 |
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KR102606983B1 (ko) * | 2018-11-29 | 2023-11-29 | 현대자동차주식회사 | 차량 및 그 제어방법 |
JP6939837B2 (ja) * | 2019-04-01 | 2021-09-22 | カシオ計算機株式会社 | 電源回路、電源制御方法、及び電源制御プログラム |
US11762406B2 (en) * | 2021-09-09 | 2023-09-19 | GM Global Technology Operations LLC | Voltage control and noise isolation for a fuse system |
US11817693B2 (en) * | 2021-10-29 | 2023-11-14 | Eaton Intelligent Power Limited | Electronic trip unit with thermal capacity measurement and display |
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JP3628576B2 (ja) * | 1999-02-14 | 2005-03-16 | 矢崎総業株式会社 | 微少電流検出装置 |
US6594129B1 (en) * | 1999-09-22 | 2003-07-15 | Yazaki Corporation | Method of cutting off circuit under overcurrent, circuit cutting-off device under overcurrent, and method of protecting semiconductor relay system |
JP5390837B2 (ja) | 2008-11-14 | 2014-01-15 | 矢崎総業株式会社 | 負荷回路の保護装置 |
JP2010158109A (ja) | 2008-12-26 | 2010-07-15 | Yazaki Corp | 負荷回路の保護装置 |
JP2012100807A (ja) | 2010-11-09 | 2012-05-31 | Fujifilm Corp | 放射線画像検出装置およびその駆動制御方法 |
JP5718120B2 (ja) | 2011-03-29 | 2015-05-13 | 古河電気工業株式会社 | 電源供給装置および電源供給方法 |
EP2712084B1 (en) | 2012-09-20 | 2019-11-06 | Infineon Technologies AG | Semiconductor device including short-circuit protection with a variable threshold |
CN103094875B (zh) | 2012-12-26 | 2015-09-02 | 中国航天时代电子公司 | 一种基于微控制器实现的固态功率控制器 |
JP2017002676A (ja) | 2015-06-16 | 2017-01-05 | 株式会社カミナガ | 道路防護柵下部開口部の防護ネット |
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- 2017-11-27 US US15/822,560 patent/US10742017B2/en active Active
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CN110247375A (zh) * | 2019-07-04 | 2019-09-17 | 珠海格力电器股份有限公司 | 一种用于新能源汽车dc-dc过流保护的控制电路及控制方法 |
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DE102018200129A1 (de) | 2018-07-12 |
JP6837842B2 (ja) | 2021-03-03 |
CN108306252A (zh) | 2018-07-20 |
CN108306252B (zh) | 2020-07-21 |
US10742017B2 (en) | 2020-08-11 |
US20180198271A1 (en) | 2018-07-12 |
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