JP6048462B2 - 保護回路 - Google Patents
保護回路 Download PDFInfo
- Publication number
- JP6048462B2 JP6048462B2 JP2014173467A JP2014173467A JP6048462B2 JP 6048462 B2 JP6048462 B2 JP 6048462B2 JP 2014173467 A JP2014173467 A JP 2014173467A JP 2014173467 A JP2014173467 A JP 2014173467A JP 6048462 B2 JP6048462 B2 JP 6048462B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- converter
- terminal
- overvoltage
- protection circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
- H02H3/20—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 voltage
- H02H3/207—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 voltage also responsive to under-voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/006—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of too high or too low voltage
-
- 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
- H02H9/001—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection limiting speed of change of electric quantities, e.g. soft switching on or off
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
Landscapes
- Dc-Dc Converters (AREA)
- Emergency Protection Circuit Devices (AREA)
- Protection Of Static Devices (AREA)
- Direct Current Feeding And Distribution (AREA)
Description
Claims (2)
- ACアダプタから供給される電力で動作する負荷回路を保護する保護回路であって、
該ACアダプタに接続される入力端子からDC/DCコンバータを介して該負荷回路に接続される出力端子に向かって延びる給電ラインと、
該入力端子と該DC/DCコンバータとの間に設けられるスイッチ部であって、該入力端子と該DC/DCコンバータの間に直列接続されて配置されるスイッチング素子、該スイッチング素子に並列に接続され該スイッチング素子のオン抵抗よりも大きな抵抗値を有する電流制限抵抗素子、及び、該電流制限抵抗素子に電流が流れるときに該スイッチング素子をオンさせるスイッチ制御素子を含み、該スイッチング素子は、該電流制限抵抗素子と該スイッチ制御素子を流れる電流の遅延時間に応じて、オンするタイミングが前記ACアダプタから電力が供給開始した時点よりも遅延するスイッチ部と、
過電圧または過電流が検出されるときに該DC/DCコンバータの動作を停止して該負荷回路を保護する保護回路部と、
を備え、
該保護回路部は、
該入力端子における供給電圧が予め定めた過電圧閾値を超すときにオンする過電圧検出素子と、
該給電ラインに流れる電流が予め定めた過電流閾値を超すときにオンする過電流検出素子と、
該過電圧検出素子と該過電流検出素子を互いに並列接続した接続点と接地電位との間に直列に接続される異常検出抵抗素子、及び該異常検出抵抗素子の端子電圧でオンオフする異常検出トランジスタを有し、該異常検出トランジスタがオフのときに該DC/DCコンバータを動作可能としオンのときに該DC/DCコンバータを動作停止させる制御信号を出力する制御信号出力部と、
該異常検出トランジスタの出力端子と該接地電位との間に設けられるレベル変換素子によって該制御信号の電圧レベルを所定の分圧比で低下させたイネーブル信号を生成し、該入力端子からの供給電圧が所定の低電圧閾値未満のときに該イネーブル信号の電圧レベルを該DC/DCコンバータの動作閾値電圧未満として、該異常検出トランジスタがオフであっても該DC/DCコンバータの動作を停止させる低電圧保護部と、
を含む、保護回路。 - 請求項1に記載の保護回路において、
前記保護回路部は、
前記電流制限抵抗素子の出力側端子と前記接地電位の間に設けられ、該電流制限抵抗素子の出力側端子の電圧が予め定めた最大定格電圧を超すときにオンして、該最大定格電圧を超える電圧が前記DC/DCコンバータに供給されることを防止する定格電圧保護部を有する、保護回路。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014173467A JP6048462B2 (ja) | 2014-08-28 | 2014-08-28 | 保護回路 |
US14/821,022 US9866009B2 (en) | 2014-08-28 | 2015-08-07 | Protection circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014173467A JP6048462B2 (ja) | 2014-08-28 | 2014-08-28 | 保護回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2016048995A JP2016048995A (ja) | 2016-04-07 |
JP6048462B2 true JP6048462B2 (ja) | 2016-12-21 |
Family
ID=55403625
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2014173467A Expired - Fee Related JP6048462B2 (ja) | 2014-08-28 | 2014-08-28 | 保護回路 |
Country Status (2)
Country | Link |
---|---|
US (1) | US9866009B2 (ja) |
JP (1) | JP6048462B2 (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105743061A (zh) * | 2014-12-09 | 2016-07-06 | 鸿富锦精密工业(深圳)有限公司 | 电压保护电路 |
JP6339617B2 (ja) * | 2016-03-28 | 2018-06-06 | 矢崎総業株式会社 | 電源遮断装置 |
KR101772935B1 (ko) * | 2016-04-21 | 2017-08-30 | 주식회사 씨자인 | 전기 신호의 이상 상태 검출 및 제어 시스템 |
US10690704B2 (en) * | 2017-05-18 | 2020-06-23 | I.D. Systems, Inc. | Multi-access control and multi-relay systems and methods |
FR3068836B1 (fr) * | 2017-07-07 | 2019-08-23 | Stmicroelectronics (Rousset) Sas | Circuit de protection d'un commutateur de puissance |
DE102017219551A1 (de) * | 2017-11-03 | 2019-05-09 | Continental Teves Ag & Co. Ohg | Verpolschutzanordnung, Verfahren zum Betrieb der Verpolschutzanordnung und korrespondierende Verwendung |
US11095111B2 (en) * | 2018-04-02 | 2021-08-17 | Allegro Microsystems, Llc | Systems and methods for transient pulse protection |
CN111277940A (zh) * | 2020-01-23 | 2020-06-12 | 西安广和通无线通信有限公司 | 喇叭检测电路、方法和喇叭电路 |
CN112714382B (zh) * | 2020-12-28 | 2023-03-24 | 通力科技股份有限公司 | 功率自适应电路、控制方法及电子设备 |
DE102021209534A1 (de) | 2021-08-31 | 2023-03-02 | Robert Bosch Gesellschaft mit beschränkter Haftung | Elektrischer Energiespeicher, Gleichspannungswandler, elektrisches Energiespeichersystem und Verfahren zum Betreiben eines elektrischen Energiespeichersystems |
EP4175096A1 (en) * | 2021-11-02 | 2023-05-03 | Continental Automotive Technologies GmbH | Overvoltage protection circuit and electrical device |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4073003A (en) * | 1974-06-12 | 1978-02-07 | Raytheon Company | High efficiency low-loss power supply |
JP3314591B2 (ja) * | 1995-08-31 | 2002-08-12 | 株式会社豊田自動織機 | 自動車用電源装置 |
JPH09284994A (ja) | 1996-04-05 | 1997-10-31 | Nec Corp | 過電圧保護回路 |
JPH1118280A (ja) | 1997-06-18 | 1999-01-22 | Sony Corp | 過電圧保護回路 |
JP4298878B2 (ja) * | 2000-02-17 | 2009-07-22 | インターナショナル・ビジネス・マシーンズ・コーポレーション | 消費電力情報の表示方法および電子機器 |
JP2002084742A (ja) * | 2000-09-04 | 2002-03-22 | Sharp Corp | 降圧dcdcコンバータの過電流保護動作制御方法、降圧dcdcコンバータの過電流保護動作判定集積回路、降圧dcdcコンバータの過電流保護動作判定回路モジュールおよび降圧dcdcコンバータの制御集積回路並びにコンピュータ用の基板 |
JP2002252731A (ja) * | 2001-02-26 | 2002-09-06 | Nec Eng Ltd | 電話機用電源回路 |
JP2010220277A (ja) | 2009-03-13 | 2010-09-30 | Panasonic Corp | 異常電圧保護回路 |
JP2011066976A (ja) * | 2009-09-16 | 2011-03-31 | Sony Corp | ハイブリッド電源システム |
JP2012143110A (ja) * | 2011-01-05 | 2012-07-26 | Ricoh Co Ltd | 突入電流防止回路及び電源供給制御装置 |
US8537517B1 (en) * | 2011-04-26 | 2013-09-17 | Manufacturing Networks Incorporated | System and method for fast-acting power protection |
-
2014
- 2014-08-28 JP JP2014173467A patent/JP6048462B2/ja not_active Expired - Fee Related
-
2015
- 2015-08-07 US US14/821,022 patent/US9866009B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US9866009B2 (en) | 2018-01-09 |
US20160064919A1 (en) | 2016-03-03 |
JP2016048995A (ja) | 2016-04-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6048462B2 (ja) | 保護回路 | |
US8848332B2 (en) | Intrinsically safe energy limiting circuit | |
US8432139B2 (en) | DC-DC converter | |
JP2010068637A (ja) | 充電制御用半導体集積回路 | |
JP5590031B2 (ja) | 電源保護回路およびそれを備えたモータ駆動装置 | |
US20090154039A1 (en) | Overvoltage protection circuit and electronic device comprising the same | |
CN109217675B (zh) | 电源转换装置及其同步整流电路 | |
EP2804278B1 (en) | Self-power circuit for protecting relay | |
JP2008228538A (ja) | スイッチング電源装置 | |
JP5900949B2 (ja) | 電源故障検出回路および電源故障検出方法 | |
JP2007159344A (ja) | 電流制限回路、電源回路、及び電流制限方法 | |
EP3182572B1 (en) | Electronic circuit and method for operating an electronic circuit | |
JP2011135665A (ja) | 保護装置 | |
US9484801B2 (en) | Start-up regulator for high-input-voltage power converters | |
JP5126241B2 (ja) | 過電圧保護回路、及び過電圧保護方法 | |
JP6268485B2 (ja) | 漏電遮断器 | |
JP2015201980A (ja) | 電力用半導体素子の駆動装置 | |
JP7396240B2 (ja) | 過電流保護回路 | |
JP2007318418A (ja) | トランジスタの保護回路およびスイッチ回路 | |
KR20170095145A (ko) | Dc-dc 컨버터 | |
JP2012244716A (ja) | 保護回路、および電子機器 | |
JP2010220277A (ja) | 異常電圧保護回路 | |
KR20110009340A (ko) | 과전압 보호회로를 갖는 플라이백 컨버터 | |
JP3713795B2 (ja) | 制御装置の出力回路 | |
JP2004336873A (ja) | 過電圧保護回路、該過電圧保護回路を備えた電子機器 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20160719 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20160726 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20160916 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20161025 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20161107 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6048462 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |