WO2010073489A1 - スイッチ装置、および試験装置 - Google Patents
スイッチ装置、および試験装置 Download PDFInfo
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- WO2010073489A1 WO2010073489A1 PCT/JP2009/006473 JP2009006473W WO2010073489A1 WO 2010073489 A1 WO2010073489 A1 WO 2010073489A1 JP 2009006473 W JP2009006473 W JP 2009006473W WO 2010073489 A1 WO2010073489 A1 WO 2010073489A1
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- voltage
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/28—Modifications for introducing a time delay before switching
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2851—Testing of integrated circuits [IC]
- G01R31/2886—Features relating to contacting the IC under test, e.g. probe heads; chucks
- G01R31/2889—Interfaces, e.g. between probe and tester
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- Patent Document 1 describes a drive circuit that controls the switching time of an IGBT (Insulated Gate Bipolar Transistor).
- IGBT Insulated Gate Bipolar Transistor
- the FET 20 may include other types of devices instead of the FET 20 as long as the FET 20 is a switch that switches a connection state between the first terminal 60 and the second terminal 70 in accordance with a given control voltage.
- the FET 20 may be configured to include an IGBT or the like.
- the calibration unit 95 changes the first voltage (V 1 ) supplied to the drive unit 30 and the output voltage applied to the load 500 is predetermined for each changed first voltage from the switching start timing.
- the control voltage corresponding to the designated switching time may be detected by measuring the time to reach the voltage of.
- the calibration unit 95 may obtain the setting value of the changing unit 40 corresponding to the designated switching time before the switch device 10 is actually used.
- the driving unit 30-1 when receiving a control signal (“H”) that causes the FET 20-1 to be in a short-circuit state, the driving unit 30-1 receives a first voltage from the voltage (V OUT ) appearing at the output terminal 115. A high control voltage is applied by the voltage value (V 1 ).
- the first power supply unit 32-2 of the switch device 10-2, the second output terminal is connected to the third voltage value (V 3), than the third voltage value from the first output terminal (V 3) the first voltage
- a power supply voltage of a high voltage (V 1 + V 3 ) is generated by the value (V 1 ).
- the driving unit 30-2 gives the third voltage value (V 3 ) to the FET 20-1.
- the drive unit 30 when the drive unit 30 receives a control signal (“H”) that causes the FET 20 to be in a short circuit state, the drive unit 30 causes the FET 20 to receive only the first voltage value (V 1 ) rather than the third voltage value (V 3 ). A high voltage (V 1 + V 3 ) is applied.
- H control signal
- the voltage supplied to 2 and the third voltage value (V 3 ) supplied to the drive unit 30-2 may be different voltages.
- the second output terminal of the first power supply unit 32-1 may supply a voltage lower than the voltage (V OUT ) appearing at the output terminal 115 to the drive unit 30-1, or the first power supply unit 32-2.
- the second output terminal may supply a voltage lower than the third voltage value (V 3 ) to the driving unit 30-2.
- both the first power supply unit 32-1 and the first power supply unit 32-2 output a high voltage by the first voltage value (V 1 ) relative to the reference voltage.
- the switching time of the switch device 10-1 and the switch device 10-2 may be changed independently by changing the output voltage value with respect to the reference voltage of the unit 32-1 and the first power supply unit 32-2.
- FIG. 5 shows an example of detailed configurations of the drive unit 30 and the first power supply unit 32 in the switch device 10 together with other parts of the switch device 10.
- the first power supply unit 32 may include an operational amplifier 322, a resistor 324, a resistor 325, a transistor 326, and a variable voltage source 328.
- the operational amplifier 322, the resistor 324, the resistor 325, and the transistor 326 function as a current buffer circuit that amplifies the voltage set in the variable voltage source 328.
- the variable voltage source 328 supplies a voltage corresponding to the setting by the changing unit 40 to the current buffer circuit.
- the variable voltage source 328 may be a DA converter, for example.
- the first power supply unit 32 amplifies the signal supplied from the variable voltage source 328 and supplies it as the power supply voltage of the drive unit 30.
- the driving unit 30 may be a so-called push-pull type driving circuit including a first transistor 340 and a second transistor 342.
- the collector terminal of the first transistor 340 is connected to the first output terminal of the first power supply unit 32, and the first voltage value (V 1 ) is supplied from the first power supply unit 32.
- the emitter terminal of the first transistor 340 is connected to the emitter terminal of the second transistor 342.
- the collector terminal of the second transistor 342 is connected to the second output terminal of the first power supply unit 32, and the third voltage value (V 3 ) is supplied from the first power supply unit 32.
- a common switch control signal is input to the base terminals of the first transistor 340 and the second transistor 342.
- a node to which the emitter terminal of the first transistor 340 and the emitter terminal of the second transistor 342 are connected is further connected to the gate terminal of the FET 20. Then, in response to the switch control signal, the control voltage supplied to the gate terminal of the FET 20 by the power supplied from the first power supply unit 32 becomes the first voltage value (V 1 ) and the third voltage value (V 3 ). And change between.
- the drive unit 30 can change the control voltage to control the switching time.
- the first voltage value (V 1 ) may be a voltage value having a positive polarity or a voltage value having a negative polarity with respect to the third voltage value (V 3 ). In the example of FIG.
- the second output terminal of the first power supply unit 32 is connected to the source terminal of the FET 20, and the source terminal of the FET 20 has the third voltage value (V 3 ).
- the second output terminal of 32 may not be connected to the source terminal of the FET 20, and another voltage may be applied to the source terminal of the FET 20.
- the third voltage value (V 3 ) may be a voltage lower than the voltage applied to the source terminal of the FET 20.
- FIG. 6 shows another example of the detailed configuration of the switch device 10.
- the switch device 10 switches the connection state between the two terminals. More specifically, the switch device 10 opens or shorts between the first terminal 60 and the second terminal 70.
- the switch device 10 includes an FET 20, a first power supply unit 32, a second power supply unit 35, a drive unit 30, and a change unit 40.
- the FET 20 switches the connection state between the two terminals (between the first terminal 60 and the second terminal 70) according to the applied control voltage. More specifically, the FET 20 opens or shorts between two terminals according to a given control voltage.
- a switching state of the FET 20 in which one of the two terminals is opened or short-circuited is referred to as a first state
- a switching state different from the first state of the FET 20 is referred to as a second state.
- the FET 20 is in the first state when the control voltage of the third voltage value (V 3 ) is applied, and is in the second state when the control voltage of the second voltage value (V 2 ) is applied.
- the switch device 10 may include other types of devices instead of the FET 20 as long as the switch device 10 is a switch that switches the connection state between the first terminal 60 and the second terminal 70 in accordance with the applied control voltage. Good.
- the switch device 10 may be configured to include an IGBT or the like instead of the FET 20.
- the first power supply unit 32 can change the first voltage value (V 1 ) from the outside.
- the first power supply unit 32 is externally supplied with data representing the first voltage value (V 1 ) to be generated, and generates a power supply voltage having a value corresponding to the given data.
- the second voltage value (V 2 ) has the same polarity voltage value as that of the first voltage value (V 1 ) when the third voltage value (V 3 ) is used as a reference (for example, 0 V).
- the absolute value of the potential difference from the third voltage value (V 3 ) is greater than or equal to the first voltage value (V 1 ). That is, the first voltage value (V 1 ), the second voltage value (V 2 ), and the third voltage value (V 3 ) are V 2 ⁇ V 1 ⁇ V 3 , or V 2 ⁇ V 1 ⁇ V 3. (Where V 2 ⁇ V 3 ).
- the drive unit 30 supplies the control voltage of the second voltage value (V 2 ) to the FET 20, when the power supply voltage generated by the second power supply unit 35 is dropped and applied to the FET 20, the second voltage A voltage value obtained by adding the value (V 2 ) and the voltage drop is generated.
- the drive unit 30 receives a control signal representing a switching instruction for switching the FET 20 to the first state or the second state.
- the drive unit 30 applies a control voltage having a third voltage value (V 3 ) to the FET 20.
- the driving unit 30, when receiving a control signal for the FET 20 and the second state provides the FET 20, the second voltage value control voltage (V 2).
- the drive unit 30 includes, as an example, a first transistor 33, a second transistor 34, an input switch 36, a diode 38, and a resistor 39.
- the first transistor 33 has a collector connected to the first output terminal of the first power supply unit 32 and an emitter connected to the gate of the FET 20.
- the first transistor 33 is turned on when the first output terminal of the second power supply unit 35 is connected to the base, and is turned off when the second output terminal of the second power supply unit 35 is connected to the base. .
- the second transistor 34 has a collector connected to the second output terminal of the first power supply unit 32 and the second power supply unit 35 and an emitter connected to the gate of the FET 20.
- the second transistor 34 is turned off when the first output terminal of the second power supply unit 35 is connected to the base, and between the collector and emitter when the second output terminal of the second power supply unit 35 is connected to the base. Turn on.
- the diode 38 is provided between the first output terminal of the first power supply unit 32 and the collector of the first transistor 33.
- the drive unit 30 prevents a backflow current to the first power supply unit 32 when the gate voltage of the FET 20 exceeds the first voltage value (V 1 ). That is, the diode 38 functions as a current blocking unit that blocks backflow current from the first output terminal of the second power supply unit 35 to the first output terminal of the first power supply unit 32.
- the resistor 39 is provided between the first output terminal of the second power supply unit 35 and the base of the first transistor 33.
- the resistor 39 is a first output terminal of the second power supply unit 35 when the power supply voltage of the second voltage value (V 2 ) generated from the first output terminal of the second power supply unit 35 is applied to the gate of the FET 20. And a resistance for suppressing the amount of current provided between the control terminal of the FET 20.
- the resistor 39 is provided for the purpose of making the output resistance of the second power supply unit 35 larger than the output resistance of the first power supply unit 32. Therefore, as long as the output resistance inside the second power supply unit 35 is larger than the output resistance of the first power supply unit 32, the drive unit 30 may not have the resistor 39.
- the drive unit 30 When such a drive unit 30 receives a control signal indicating an instruction to set the FET 20 in the first state, the first transistor 33 is turned off and the second transistor 34 is turned on. The first power supply unit 32 and the second output terminal of the second power supply unit 35 can be connected. Therefore, in this case, the drive unit 30 can apply the control voltage of the third voltage value (V 3 ) to the gate of the FET 20 to put the FET 20 in the first state.
- the drive unit 30 can switch the connection state of the FET 20 according to the control signal. Details of the operation of the drive unit 30 in response to receiving an instruction to switch the FET 20 from the first state to the second state will be described with reference to FIGS. 7 and 8.
- the changing unit 40 is designated with a switching time by a user or the like.
- the changing unit 40 changes the value of the power supply voltage (first voltage value (V 1 )) generated by the first power supply unit 32 according to the designated switching time.
- the changing unit 40 changes the power supply voltage of the first voltage value (V 1 ) generated by the first power supply unit 32 from the third voltage value (V 3 ) to the second voltage value according to the designated switching time. Change within the range up to (V 2 ).
- the changing unit 40 instead of changing the first voltage value (V 1 ) generated by the first power supply unit 32, corresponds to the third voltage value (V 3) of the control voltage according to the designated switching time.
- To the first voltage value (V 1 ), or the time change rate from the first voltage value (V 1 ) to the second voltage value (V 2 ) of the control voltage may be changed.
- FIG. 7 shows the case where the first transistor 33 is on and the second transistor 34 is off, and the gate voltage Vgs of the FET 20 is in the range from the third voltage value (V 3 ) to the first voltage value (V 1 ).
- An equivalent circuit of the drive unit 30 is shown.
- the driving unit 30 When receiving the control signal for instructing the FET 20 to be in the first state, the driving unit 30 turns off the first transistor 33 and turns on the second transistor 34 to control the third voltage value (V 3 ). Is applied to the gate of the FET 20.
- the driving unit 30 turns on the first transistor 33 from the state in which the first transistor 33 is turned off and the second transistor 34 is turned on.
- the second transistor 34 is changed to an off state.
- the drive unit 30 when the switching instruction for switching the FET 20 from the first state to the second state is received, the drive unit 30 is within the range of the gate voltage Vgs from the third voltage value (V 3 ) to the first voltage value (V 1 ). Supplies the power supply current output from the first power supply unit 32 to the gate capacitor 31 via the diode 38, and supplies almost no power supply current output from the second power supply unit 35 to the gate capacitance 31. That is, the drive unit 30 applies the power supply voltage generated by the first power supply unit 32 to the FET 20 as a control voltage (gate voltage Vgs).
- the drive unit 30 receives the switching instruction for switching the FET 20 from the first state to the second state, and sets the control voltage to the third voltage by the power supply voltage generated by the first power supply unit 32.
- the value (V 3 ) can be changed from the first voltage value (V 1 ).
- FIG. 8 shows the case where the first transistor 33 is on and the second transistor 34 is off, and the gate voltage Vgs of the FET 20 is in the range from the first voltage value (V 1 ) to the second voltage value (V 2 ).
- An equivalent circuit of the drive unit 30 is shown. Subsequently, when charge is accumulated in the gate capacitance 31 of the FET 20 and the gate voltage Vgs of the FET 20 reaches the first voltage value (V 1 ), the diode 38 is turned off and the first output terminal of the first power supply unit 32 is connected. The gate terminal of the FET 20 is opened.
- the driving unit 30 is in the range where the gate voltage Vgs ranges from the first voltage value (V 1 ) to the second voltage value (V 2 ).
- the second power supply unit 35 generates the gate voltage Vgs (control voltage) of the FET 20 in response to receiving a switching instruction to switch the FET 20 from the first state to the second state.
- the generated power further changes from the first voltage value (V 1 ) to the second voltage value (V 2 ) in the same direction as the change from the third voltage value (V 3 ) to the first voltage value (V 1 ). be able to.
- the changing unit 40 sets the first voltage value (V 1 ) closer to the second voltage value (V 2 ) when shortening the switching time, and increases the first voltage value when increasing the switching time. The value is changed to a value farther from the second voltage value (V 2 ). Thereby, the change part 40 can adjust the switching time in the case of changing FET20 from a 1st state to a 2nd state according to the designated switching time.
- the changing unit 40 may make the power supply voltage of the first voltage value (V 1 ) generated by the first power supply unit 32 coincide with the second voltage value (V 2 ).
- the drive unit 30 uses almost the power generated by the second power supply unit 35 as the gate voltage Vgs (control voltage) of the FET 20.
- the power generated by the first power supply unit 32 can be changed from the third voltage value (V 3 ) to the second voltage value (V 2 ).
- the changing unit 40 may change the time change rate from the third voltage value (V 3 ) to the first voltage value (V 1 ) of the control voltage instead of the above. More specifically, when changing the switching time, the changing unit 40 reduces the output resistance of the first power supply unit 32, for example, to reduce the first voltage value (V 3 ) from the third voltage value (V 3 ). Increase the rate of time change until 1 ). In addition, when the switching unit increases the switching time, for example, by increasing the output resistance of the first power supply unit 32, the changing unit 40 increases the third voltage value (V 3 ) to the first voltage value (V 1 ). Reduce the rate of time change.
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Abstract
Description
20・・・FET
30・・・駆動部
31・・・ゲート容量
32・・・第1電源部
33・・・第1トランジスタ
34・・・第2トランジスタ
35・・・第2電源部
36・・・入力スイッチ
37・・・ベースエミッタ間ダイオード成分
38・・・ダイオード
39・・・抵抗
40・・・変更部
50・・・制御信号入力端子
60・・・第1端子
70・・・第2端子
90・・・タイミング調整部
95・・・キャリブレーション部
10-1・・・高電圧側スイッチ装置
20-1・・・FET
30-1・・・駆動部
32-1・・・第1電源部
40-1・・・変更部
50-1・・・制御信号入力端子
60-1・・・第1端子
70-1・・・第2端子
10-2・・・低電圧側スイッチ装置
20-2・・・FET
30-2・・・駆動部
32-2・・・第1電源部
40-2・・・変更部
50-2・・・制御信号入力端子
60-2・・・第1端子
70-2・・・第2端子
100・・・試験装置
110・・・信号供給部
115・・・出力端子
120・・・信号取得部
130・・・判定部
200・・・被試験デバイス
300・・・高電圧側基準電圧
320・・・電流バッファ回路
322・・・演算増幅器
324・・・抵抗
325・・・抵抗
326・・・トランジスタ
328・・・可変電圧源
340・・・第1トランジスタ
342・・・第2トランジスタ
400・・・電圧源
500・・・負荷
Claims (11)
- 2つの端子間の接続状態を切り替えるスイッチ装置であって、
与えられる制御電圧に応じて前記2つの端子間の接続状態を切り替えるスイッチと、
与えられる制御信号に応じた制御電圧を前記スイッチに与える駆動部と、
指定されたスイッチング時間に応じて、前記駆動部から出力される前記制御電圧を変更する変更部と、
を備えるスイッチ装置。 - 前記変更部は、指定されたスイッチング時間に応じて、前記駆動部に電源として供給される電力を変更する
請求項1に記載のスイッチ装置。 - 前記変更部は、前記スイッチのスイッチング動作に先立って前記駆動部から出力される前記制御電圧を変更する
請求項1または2に記載のスイッチ装置。 - 前記スイッチは、電界効果トランジスタであり、
前記駆動部は、前記制御電圧を前記電界効果トランジスタのゲートに与える
請求項1から3の何れかに記載のスイッチ装置。 - 前記変更部は、前記制御電圧を、前記電界効果トランジスタのしきい電圧からゲート電圧の最大定格までの範囲で変更する
請求項4に記載のスイッチ装置。 - 第1電圧値の電源電圧を発生する第1電源部と、
第2電圧値の電源電圧を発生する第2電源部と、を更に備え、
前記駆動部は、前記スイッチを第1状態から第2状態へ切り替える切替指示を受けたことに応じて、前記制御電圧を、前記第1電源部が発生した電力により前記第1電圧値まで変化させた後、前記第2電源部が発生した電力により、前記第1電圧値までの時間変化率より低い時間変化率で同方向に、前記第1電圧値から第2電圧値まで更に変化させる
請求項1から5の何れかに記載のスイッチ装置。 - 前記第1電源部は、第1出力端子から前記第1電圧値の電源電圧を発生し、第2出力端子から第3電圧値の電源電圧を発生し、
前記第2電源部は、第1出力端子から前記第2電圧値の電源電圧を発生し、第2出力端子から第3電圧値の電源電圧を発生し、
前記駆動部は、前記スイッチを第1状態へ切り替える切替指示を受けた場合、前記スイッチの制御端と前記第1電源部および前記第2電源部のそれぞれの第2出力端子とを接続し、前記スイッチを第2状態へ切り替える切替指示を受けた場合、前記スイッチの制御端と前記第1電源部および前記第2電源部のそれぞれの第1出力端子とを接続する
請求項6に記載のスイッチ装置。 - 前記第1電源部は、前記第1電圧値を外部から変更することができ、
前記変更部は、指定されたスイッチング時間に応じて、前記第1電源部が発生する前記第1電圧値の電源電圧を、前記第3電圧値から、前記第2電圧値を超えた前記スイッチの制御電圧の定格電圧までの範囲で変更する
請求項7に記載のスイッチ装置。 - 前記変更部による前記制御電圧の変更に応じて、前記制御信号を前記駆動部に与えるタイミングを調整するタイミング調整部を更に備える
請求項1から8の何れかに記載のスイッチ装置。 - 前記スイッチのスイッチング動作に先立って、指定されたスイッチング時間に対応する前記制御電圧を検出するキャリブレーション部を更に備える
請求項1から9の何れかに記載のスイッチ装置。 - 被試験デバイスを試験する試験装置であって、
前記被試験デバイスに対して試験信号を供給する信号供給部と、
前記試験信号に応じて前記被試験デバイスから出力される応答信号を取得する信号取得部と、
前記応答信号に基づき前記被試験デバイスの良否を判定する判定部と、
を備え、
前記信号供給部は、
前記被試験デバイスが接続される出力端子と、
高電圧側基準電圧が与えられる第1端子と、前記出力端子が接続された第2端子との間を、前記被試験デバイスを試験するための試験パターンに応じたポジ側の制御信号に応じて開放または短絡する高電圧側スイッチ装置と、
前記出力端子が接続された第1端子と、低電圧側基準電圧が与えられる第2端子との間を、前記ポジ側の制御信号と論理が反転したネガ側の制御信号に応じて開放または短絡する低電圧側スイッチ装置と、
を有し、
前記高電圧側スイッチ装置および前記低電圧側スイッチ装置のそれぞれは、
与えられる制御電圧に応じて、前記第1端子と前記第2端子との間の接続状態を切り替えるスイッチと、
与えられる制御信号に応じた制御電圧を前記スイッチに与える駆動部と、
指定されたスイッチング時間に応じて、前記駆動部から出力される前記制御電圧を変更する変更部と、
を含む試験装置。
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JP2010543786A JP5405492B2 (ja) | 2008-12-26 | 2009-11-30 | スイッチ装置、および試験装置 |
DE200911004404 DE112009004404T5 (de) | 2008-12-26 | 2009-11-30 | Schaltvorrichtung und Prüfvorrichtung |
US13/118,472 US8947112B2 (en) | 2008-12-26 | 2011-05-30 | Switching apparatus and test apparatus |
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US13/118,472 Continuation US8947112B2 (en) | 2008-12-26 | 2011-05-30 | Switching apparatus and test apparatus |
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DE102017204418A1 (de) * | 2017-03-16 | 2018-09-20 | Robert Bosch Gmbh | Verfahren zum Umschalten eines Halbleiterschalters |
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Also Published As
Publication number | Publication date |
---|---|
TW201032472A (en) | 2010-09-01 |
DE112009004404T5 (de) | 2012-08-16 |
JPWO2010073489A1 (ja) | 2012-06-07 |
US20120139567A1 (en) | 2012-06-07 |
TWI484755B (zh) | 2015-05-11 |
US8947112B2 (en) | 2015-02-03 |
JP5405492B2 (ja) | 2014-02-05 |
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