JP5566738B2 - 半導体スイッチ回路 - Google Patents
半導体スイッチ回路 Download PDFInfo
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- JP5566738B2 JP5566738B2 JP2010058769A JP2010058769A JP5566738B2 JP 5566738 B2 JP5566738 B2 JP 5566738B2 JP 2010058769 A JP2010058769 A JP 2010058769A JP 2010058769 A JP2010058769 A JP 2010058769A JP 5566738 B2 JP5566738 B2 JP 5566738B2
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- circuit
- output
- level shift
- switch
- voltage
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- 239000004065 semiconductor Substances 0.000 title claims description 34
- 238000001514 detection method Methods 0.000 claims description 26
- 230000004044 response Effects 0.000 claims description 5
- 230000003111 delayed effect Effects 0.000 claims description 4
- 238000004904 shortening Methods 0.000 claims description 4
- 230000001934 delay Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 5
- 230000003071 parasitic effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 102220646157 Actin-like protein 7A_S12A_mutation Human genes 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 102200048773 rs2224391 Human genes 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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Description
Claims (2)
- 少なくとも1つの共通入出力端子と、2つ以上の複数の個別入出力端子と、前記共通入出力端子と前記複数の個別入出力端子とを選択的に接続し、ゲートに電流が流れるタイプであって、前記ゲートに電圧を印加することにより導通状態あるいは非導通状態となるFETで構成されるスイッチ回路と、外部からの経路切替信号に応じて前記スイッチ回路へ駆動電圧を出力する駆動回路と、前記駆動電圧を生成するレベルシフト回路とを具備する半導体スイッチ回路であって、
前記経路切替信号の入力状態が変化したことを検出する検出回路と、前記検出回路から出力される検出信号からパルス信号を発生させるパルス発生回路と、前記パルス発生回路から出力されたパルス信号を入力し、前記パルス信号が入力しているとき前記レベルシフト回路を迂回させるレベルシフト短絡スイッチ回路とを備え、
前記レベルシフト回路は、ダイオードで構成され、
前記経路切替信号の入力状態が変化したときから予め設定された時間だけ、前記パルス発生回路から前記パルス信号を前記レベルシフト短絡スイッチに出力して、前記レベルシフト回路を迂回させ、前記レベルシフト回路に入力する電圧を前記駆動電圧として前記駆動回路に出力し、
前記予め設定した時間が経過した後は、前記パルス発生回路から前記パルス信号の出力を停止し、前記レベルシフト短絡スイッチを開放状態として、前記レベルシフト回路を経由し電圧降下させた電圧を前記駆動電圧として前記駆動回路に出力することにより、スイッチング時間を短縮しつつ、消費電流の増大を抑制することを特徴とする半導体スイッチ回路。 - 請求項1記載の半導体スイッチ回路において、
前記検出回路は、前記駆動回路から出力される経路切替状態に対応した論理の異なる少なくとも2つの信号を入力し、少なくとも一方の信号のみを遅延させて出力し、
前記パルス発生回路は、前記遅延した信号からパルス信号を形成することを特徴とする半導体スイッチ回路。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010058769A JP5566738B2 (ja) | 2010-03-16 | 2010-03-16 | 半導体スイッチ回路 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010058769A JP5566738B2 (ja) | 2010-03-16 | 2010-03-16 | 半導体スイッチ回路 |
Publications (2)
Publication Number | Publication Date |
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JP2011193312A JP2011193312A (ja) | 2011-09-29 |
JP5566738B2 true JP5566738B2 (ja) | 2014-08-06 |
Family
ID=44797765
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2010058769A Expired - Fee Related JP5566738B2 (ja) | 2010-03-16 | 2010-03-16 | 半導体スイッチ回路 |
Country Status (1)
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JP (1) | JP5566738B2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015012536A (ja) * | 2013-07-01 | 2015-01-19 | 新日本無線株式会社 | 半導体スイッチ回路 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07226663A (ja) * | 1994-02-10 | 1995-08-22 | Mitsubishi Electric Corp | トランジスタ駆動回路 |
TWI258261B (en) * | 2004-05-18 | 2006-07-11 | Richtek Techohnology Corp | JFET driving circuit applied to DC/DC converter and method thereof |
JP2005354279A (ja) * | 2004-06-09 | 2005-12-22 | New Japan Radio Co Ltd | 半導体スイッチ回路 |
JP5015029B2 (ja) * | 2007-03-09 | 2012-08-29 | パナソニック株式会社 | 昇圧回路に用いられる電流制御回路 |
JP4874887B2 (ja) * | 2007-07-20 | 2012-02-15 | 株式会社東芝 | 高周波半導体スイッチ装置 |
JP2008035560A (ja) * | 2007-10-09 | 2008-02-14 | Matsushita Electric Ind Co Ltd | 高周波スイッチ回路 |
US7868683B2 (en) * | 2008-08-12 | 2011-01-11 | Infineon Technologies Ag | Switch using an accelerating element |
JP4903845B2 (ja) * | 2009-08-31 | 2012-03-28 | 株式会社東芝 | 半導体スイッチ |
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2010
- 2010-03-16 JP JP2010058769A patent/JP5566738B2/ja not_active Expired - Fee Related
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JP2011193312A (ja) | 2011-09-29 |
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