JPWO2022208136A5 - - Google Patents
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- JPWO2022208136A5 JPWO2022208136A5 JP2023560447A JP2023560447A JPWO2022208136A5 JP WO2022208136 A5 JPWO2022208136 A5 JP WO2022208136A5 JP 2023560447 A JP2023560447 A JP 2023560447A JP 2023560447 A JP2023560447 A JP 2023560447A JP WO2022208136 A5 JPWO2022208136 A5 JP WO2022208136A5
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- gate
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- power switch
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- 238000001514 detection method Methods 0.000 claims 37
- 238000005259 measurement Methods 0.000 claims 15
- 238000000034 method Methods 0.000 claims 5
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Claims (19)
前記ゲート制御パワースイッチ(4)の浮遊インダクタンス(LS)における電圧降下(ΔVLS)に応じて測定信号(VLS,m)を生成するように構成された測定回路(2)と、
前記測定信号(VLS,m)が基準電圧(Vref)を超えかつ前記ゲート制御パワースイッチ(4)がオン状態であるときにショート検出信号(VSC)を生成するように構成されたショート検出信号生成回路(3)と、
を備える、ショート検出装置。 A short circuit detection device (1) for detecting a short circuit in a gate-controlled power switch (4), comprising:
a measurement circuit (2) configured to generate a measurement signal (V LS,m ) in response to a voltage drop (ΔV LS ) across a stray inductance (L S ) of the gate-controlled power switch (4);
a short detection signal generating circuit (3) configured to generate a short detection signal (V SC ) when the measurement signal (V LS,m ) exceeds a reference voltage (V ref ) and the gate-controlled power switch (4) is in an on-state;
A short circuit detection device comprising:
ゲートドライバ回路(5)から出力され前記ゲート制御パワースイッチ(4)のゲート端子(G)に供給されるゲート制御信号(VG)の出力電圧を測定して実測ゲート電圧(VG,m)を生成するように構成された分圧回路(31)と、
前記実測ゲート電圧(VG,m)を遅延時間(tdel-)だけ遅延させてショート検出有効化信号(VSC,en)を生成するように構成された信号遅延回路(32)と、
論理ゲート(33)と、
を備え、
前記信号遅延回路(32)が出力する前記ショート検出有効化信号(VSC,en)によって前記論理ゲート(33)が有効化されていれば、前記比較回路(3A)が出力する前記比較出力信号(VLS,C)が前記論理ゲート(33)を介して前記ショート検出信号(VSC)として前記ゲートドライバ回路(5)の入力端子(SC)に供給される、請求項1から請求項5のいずれかに記載のショート検出装置。 The short detection signal generating circuit (3) includes a short detection enabling circuit (3B), which includes a voltage dividing circuit (31) configured to measure an output voltage of a gate control signal (VG) output from a gate driver circuit (5) and supplied to a gate terminal ( G ) of the gate controlled power switch (4) to generate an actual gate voltage ( VG,m );
a signal delay circuit (32) configured to delay the measured gate voltage ( VG,m ) by a delay time ( tdel- ) to generate a short detection enable signal (VSC ,en );
A logic gate (33);
Equipped with
A short detection device as described in any one of claims 1 to 5, wherein if the logic gate (33) is enabled by the short detection enable signal (V SC,en ) output by the signal delay circuit (32), the comparison output signal (V LS,C ) output by the comparison circuit (3A) is supplied to the input terminal (SC) of the gate driver circuit (5) as the short detection signal (V SC ) via the logic gate (33).
(a)前記ゲート制御パワースイッチ(4)の浮遊インダクタンス(LS)における電圧降下(ΔVLS)に応じて測定信号(VLS,m)を生成する工程(S1)と、
(b)生成された前記測定信号(VLS,m)が基準電圧(Vref)を超えかつ前記ゲート制御パワースイッチ(4)がオン状態であるときにショート検出信号(VSC)を生成する工程(S2)と、
を備える、高速ショート検出方法。 A fast short detection method for detection of a short circuit (SC) in a gate-controlled power switch (4), comprising the steps of:
(a) generating (S1) a measurement signal (V LS,m ) in response to a voltage drop (ΔV LS ) across a stray inductance (L S ) of the gate-controlled power switch (4);
(b) generating a short detection signal (V SC ) when the generated measurement signal (V LS,m ) exceeds a reference voltage (V ref ) and the gate-controlled power switch (4) is in an on-state (S2);
A high-speed short detection method comprising:
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IB2021/052690 WO2022208136A1 (en) | 2021-03-31 | 2021-03-31 | Method and apparatus for fast short circuit detection of a short circuit at a gate-controlled power switch |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2024514094A JP2024514094A (en) | 2024-03-28 |
JPWO2022208136A5 true JPWO2022208136A5 (en) | 2024-04-09 |
Family
ID=75530097
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2023560447A Pending JP2024514094A (en) | 2021-03-31 | 2021-03-31 | Method and apparatus for fast short detection for short circuits in gated power switches |
Country Status (5)
Country | Link |
---|---|
US (1) | US20240019501A1 (en) |
JP (1) | JP2024514094A (en) |
CN (1) | CN117099004A (en) |
DE (1) | DE112021007000T5 (en) |
WO (1) | WO2022208136A1 (en) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5315155B2 (en) * | 2009-07-23 | 2013-10-16 | 日立オートモティブシステムズ株式会社 | Semiconductor element control device, automotive electrical system |
-
2021
- 2021-03-31 JP JP2023560447A patent/JP2024514094A/en active Pending
- 2021-03-31 CN CN202180096654.7A patent/CN117099004A/en active Pending
- 2021-03-31 WO PCT/IB2021/052690 patent/WO2022208136A1/en active Application Filing
- 2021-03-31 DE DE112021007000.2T patent/DE112021007000T5/en active Pending
-
2023
- 2023-09-28 US US18/476,574 patent/US20240019501A1/en active Pending
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