JP2008061180A5 - - Google Patents
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- JP2008061180A5 JP2008061180A5 JP2006238880A JP2006238880A JP2008061180A5 JP 2008061180 A5 JP2008061180 A5 JP 2008061180A5 JP 2006238880 A JP2006238880 A JP 2006238880A JP 2006238880 A JP2006238880 A JP 2006238880A JP 2008061180 A5 JP2008061180 A5 JP 2008061180A5
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- current
- load
- control
- drive
- control device
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Claims (7)
前記電流駆動素子の動作を制御する制御手段と、
前記電流駆動素子の温度を直接的または間接的に検出する温度センサと、
その温度センサの検出結果に基づいて、前記電流駆動素子が異常に発熱して温度が過剰に高くなっている温度異常状態かどうかを判定し、温度異常状態と判定した場合には、前記電流駆動素子の電力損失が低減するような制御を前記制御手段に実行させる保護手段とを備え、
前記負荷は、デッドショートを含まない通常使用状態では過大電流が流れない性質を有するヒーターであることを特徴とする負荷駆動制御装置。 A current driving element that controls the driving current supplied from the power source to the load;
Control means for controlling the operation of the current drive element;
A temperature sensor for directly or indirectly detecting the temperature of the current driving element;
Based on the detection result of the temperature sensor, it is determined whether or not the current drive element is abnormally heated and the temperature is excessively high, and if it is determined that the temperature is abnormal, the current drive Protective means for causing the control means to perform control that reduces power loss of the element,
The load drive control device, wherein the load is a heater having a property that an excessive current does not flow in a normal use state not including a dead short.
前記保護手段は、温度異常状態と判定した際に、前記制御手段が前記電流駆動素子の通常制御中であれば、前記電流駆動素子がフルオン固定状態になるような制御を前記制御手段に実行させることを特徴とする負荷駆動制御装置。 The load drive control device according to claim 1,
The protection means causes the control means to execute control so that the current drive element is in a full-on fixed state when the control means is in normal control of the current drive element when it is determined that the temperature is abnormal. A load drive control device characterized by that.
前記保護手段は、温度異常状態と判定した際に、前記制御手段が前記電流駆動素子をフルオン固定状態に制御中であれば、前記電流駆動素子をフルオン固定状態にした場合よりも電力損失が低損失になるような制御を前記制御手段に実行させることを特徴とする負荷駆動制御装置。 In the load drive control device according to claim 2,
When it is determined that the protection means is in an abnormal temperature state, if the control means is controlling the current drive element to the full-on fixed state, the power loss is lower than when the current drive element is set to the full-on fixed state. A load drive control device characterized by causing the control means to execute control that causes loss.
前記電流駆動素子の動作を制御する制御手段と、
前記電流駆動素子をバイパスして前記電源から前記負荷に駆動電流を供給するバイパス手段と、
前記電流駆動素子の温度を直接的または間接的に検出する温度センサと、
その温度センサの検出結果に基づいて、前記電流駆動素子が異常に発熱して温度が過剰に高くなっている温度異常状態かどうかを判定し、温度異常状態と判定した場合には、前記電流駆動素子がフルオフ固定状態になるような制御を前記制御手段に実行させると共に、前記バイパス手段から前記負荷に駆動電流を供給させる保護手段とを備え、
前記負荷は、デッドショートを含まない通常使用状態では過大電流が流れない性質を有するヒーターであることを特徴とする負荷駆動制御装置。 A current driving element that controls the driving current supplied from the power source to the load;
Control means for controlling the operation of the current drive element;
Bypass means for bypassing the current drive element and supplying a drive current from the power source to the load;
A temperature sensor for directly or indirectly detecting the temperature of the current driving element;
Based on the detection result of the temperature sensor, it is determined whether or not the current drive element is abnormally heated and the temperature is excessively high, and if it is determined that the temperature is abnormal, the current drive A control unit that causes the control unit to perform control such that the element is in a full-off fixed state, and includes a protection unit that supplies a drive current from the bypass unit to the load,
The load drive control device according to claim 1, wherein the load is a heater having a property that an excessive current does not flow in a normal use state not including a dead short.
前記制御手段は、前記電流駆動素子をＰＷＭ制御することを特徴とする負荷駆動制御装置。 In the load drive control device according to any one of claims 1 to 4,
The load drive control apparatus, wherein the control means performs PWM control on the current drive element.
前記電力損失が低損失になるような制御は、デュ−ティ比を低い値にするか、スイッチング周波数を低い値に設定したことを特徴とする負荷駆動制御装置。The load drive control device characterized in that the control for reducing the power loss is a low duty ratio or a low switching frequency.
前記制御手段は、前記電流駆動素子をリニア制御することを特徴とする負荷駆動制御装置。 In the load drive control device according to any one of claims 1 to 4,
The load drive control device, wherein the control means linearly controls the current drive element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006238880A JP4802948B2 (en) | 2006-09-04 | 2006-09-04 | Load drive control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006238880A JP4802948B2 (en) | 2006-09-04 | 2006-09-04 | Load drive control device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2008061180A JP2008061180A (en) | 2008-03-13 |
| JP2008061180A5 true JP2008061180A5 (en) | 2010-08-26 |
| JP4802948B2 JP4802948B2 (en) | 2011-10-26 |
Family
ID=39243376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006238880A Expired - Fee Related JP4802948B2 (en) | 2006-09-04 | 2006-09-04 | Load drive control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4802948B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2466042B (en) * | 2008-12-09 | 2013-07-31 | Vphase Smart Energy Ltd | Voltage reduction |
| KR101096775B1 (en) | 2009-03-17 | 2011-12-21 | 주식회사 피플웍스 | Pulse Amp Control and Protection System |
| JP5765210B2 (en) * | 2011-12-12 | 2015-08-19 | 株式会社デンソー | Heater drive circuit |
| JP6623556B2 (en) | 2015-05-27 | 2019-12-25 | 株式会社デンソー | Semiconductor device |
| JP6623829B2 (en) | 2016-02-24 | 2019-12-25 | 株式会社デンソー | Overheat protection device |
| CN112711290B (en) * | 2020-12-23 | 2022-05-13 | 杭州晶华微电子股份有限公司 | Semiconductor integrated circuit and temperature drift compensation method for semiconductor integrated circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4708773B2 (en) * | 2004-11-30 | 2011-06-22 | 株式会社オートネットワーク技術研究所 | Power supply control device |
-
2006
- 2006-09-04 JP JP2006238880A patent/JP4802948B2/en not_active Expired - Fee Related
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