JP6683621B2 - パワーモジュールおよびパワー回路 - Google Patents
パワーモジュールおよびパワー回路 Download PDFInfo
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- JP6683621B2 JP6683621B2 JP2016556458A JP2016556458A JP6683621B2 JP 6683621 B2 JP6683621 B2 JP 6683621B2 JP 2016556458 A JP2016556458 A JP 2016556458A JP 2016556458 A JP2016556458 A JP 2016556458A JP 6683621 B2 JP6683621 B2 JP 6683621B2
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- power terminal
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Classifications
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- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/34—Snubber circuits
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- H02M3/00—Conversion of DC power input into DC power output
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- 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
- H02M3/156—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 with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—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 with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
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- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
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- 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
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
- H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of DC power input into AC power output without possibility of reversal 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
- H02M7/537—Conversion of DC power input into AC power output without possibility of reversal 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, e.g. single switched pulse inverters
- H02M7/5387—Conversion of DC power input into AC power output without possibility of reversal 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, e.g. single switched pulse inverters in a bridge configuration
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/64—Double-diffused metal-oxide semiconductor [DMOS] FETs
- H10D30/66—Vertical DMOS [VDMOS] FETs
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
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- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/64—Double-diffused metal-oxide semiconductor [DMOS] FETs
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- H10D30/668—Vertical DMOS [VDMOS] FETs having trench gate electrodes, e.g. UMOS transistors
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
- H10D62/10—Shapes, relative sizes or dispositions of the regions of the semiconductor bodies; Shapes of the semiconductor bodies
- H10D62/17—Semiconductor regions connected to electrodes not carrying current to be rectified, amplified or switched, e.g. channel regions
- H10D62/393—Body regions of DMOS transistors or IGBTs
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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- H10D62/80—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials
- H10D62/83—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials being Group IV materials, e.g. B-doped Si or undoped Ge
- H10D62/832—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials being Group IV materials, e.g. B-doped Si or undoped Ge being Group IV materials comprising two or more elements, e.g. SiGe
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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- H10D64/20—Electrodes characterised by their shapes, relative sizes or dispositions
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- H10D64/511—Gate electrodes for field-effect devices for FETs for IGFETs
- H10D64/512—Disposition of the gate electrodes, e.g. buried gates
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
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- H01L2224/04—Structure, shape, material or disposition of the bonding areas prior to the connecting process
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- H—ELECTRICITY
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- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/34—Snubber circuits
- H02M1/348—Passive dissipative snubbers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Geometry (AREA)
- Inverter Devices (AREA)
Description
基本技術に係るパワーモジュール1Aを備えるパワー回路2Aであって、ハーフブリッジ回路の模式的回路構成は、図1に示すように表される。
実施の形態に係るパワーモジュール1を備えるパワー回路2であって、ハーフブリッジ回路の模式的回路構成は、図6に示すように表される。なお、実施の形態に係るパワーモジュール1を備えるパワー回路2は、ハーフブリッジ回路に限定されず、フルブリッジ回路、或いは3相ブリッジ回路などにおいても適用可能である。
実施の形態の変形例に係るパワーモジュール1を備えるパワー回路2であって、ハーフブリッジ回路の模式的回路構成は、図12に示すように表される。なお、実施の形態の変形例に係るパワーモジュール1を備えるパワー回路2においても、ハーフブリッジ回路に限定されず、フルブリッジ回路、或いは3相ブリッジ回路などにおいても適用可能である。
実施の形態に係るパワーモジュール1の内部構造例1であって、内蔵コンデンサC1および外付けスナバ回路(RB・CB)4を有する例において、樹脂層20を形成前の模式的上面図は、図15に示すように表される。
実施の形態に係るパワーモジュール1の内部構造例2であって、内蔵コンデンサC1および外付けスナバ回路(RB・CB)を有する例において、樹脂層を形成前の模式的上面図は、図18に示すように表される。また、図18のI−I線に沿う模式的断面構造は、図19に示すように表される。樹脂層を形成後の模式的鳥瞰構成は、図17と同様に表され、トランスファーモールド成型によって形成可能である。
―SiC−DIMOSFET―
実施の形態に係るパワーモジュール1を備えるパワー回路2に適用可能な半導体デバイス200の例であって、SiC−DI(Double Implanted)MOSFETの模式的断面構造は、図21に示すように表される。
実施の形態に係るパワーモジュール1を備えるパワー回路2に適用可能な半導体デバイス200の例であって、SiC−トレンチ(T:Trench)MOSFETの模式的断面構造は、図22に示すように表される。
上記のように、実施の形態およびその変形例によって記載したが、この開示の一部をなす論述および図面は例示的なものであり、この発明を限定するものであると理解すべきではない。この開示から当業者には様々な代替実施の形態、実施例および運用技術が明らかとなろう。
2、2A…パワー回路
3…ブリッジ部
4、30…スナバ回路
10、101、102…主基板(セラミック基板)
141、142、151、152…信号基板
171、172…チップ上面バスバー
191、192…チップ上スペーサ
20…樹脂層
211、212…ビアホール
23P、23N…金属板
25…スナバ回路基板
26、27、28…電極パターン
291、292…スペーサ
124…n+SiC基板
126、126N…n-ドリフト層
128…pボディ領域
130…ソース領域
132…ゲート絶縁膜
134…ソース電極
136…ドレイン電極
138、138TG…ゲート電極
144、144U、144B…層間絶縁膜
200、Q1、Q2…半導体デバイス(SiC−MOSFET)
BD…ボディダイオード
RB…スナバ抵抗
CB…スナバコンデンサ
CP…並列コンデンサ
C1、C11、C12…内蔵コンデンサ
C2…平滑コンデンサ
P…正側電力端子
N…負側電力端子
OUT…出力端子
S1、S2…ソース
D、D1、D2…ドレイン
SS1、SS2…ソースセンス
EP、EO、EN…電極パターン
G1、G2…ゲート
GT1、GT2…ゲート端子
SST1、SST2…ソースセンス端子
SL1、SL2、SPL1、SPL2…ソースセンス用信号配線パターン
GL1、GL2、GPL1、GPL2…ゲート用信号配線パターン
SP…ソースパッド電極
E…電源
L…負荷リアクトル
IdH1、IdL1…デバイス部を導通する電流
IdH2、IdL2…電力端子P、Nを導通する電流
IdH2P、IdL2P…ピーク値
GW1、GW2…ゲート用ワイヤ
SSW1、SSW2…ソースセンス用ワイヤ
BWS1、BWS2…ソース用ボンディングワイヤ
Claims (17)
- 複数のトランジスタ素子によって構成されたブリッジ回路と前記ブリッジ回路の両端に跨るように接続された内蔵コンデンサとを有するブリッジ部と、
前記ブリッジ部の両端にそれぞれ一端が接続され、他端が前記ブリッジ部を封止する封止部の外部に露出した正側電力端子および負側電力端子と、
前記正側電力端子および前記負側電力端子の露出された側に跨るように接続されたスナバ回路と
を備えるパワーモジュールであって、
前記正側電力端子および負側電力端子は、それぞれ、前記パワーモジュールの底面よりも高い位置にて前記パワーモジュールの表面と平行方向に延伸する平板の金属板であり、
前記パワーモジュールは、
前記スナバ回路の第1の側面から延伸されて前記正側電力端子の平板面の上面に接続配置される第1金属板と、
前記スナバ回路の第1の側面とは異なる第2の側面から延伸されて前記負側電力端子の平板面の上面に接続配置される第2金属板と
をさらに備え、
前記スナバ回路は、前記第1金属板と前記正側電力端子との接続領域および前記第2金属板と前記負側電力端子との接続領域の領域外に設けられることを特徴とするパワーモジュール。 - 主基板と、
前記主基板上に配置され、正側電力端子に接続された第1電極パターンと、
前記主基板上に配置され、負側電力端子に接続された第2電極パターンと、
前記主基板上に配置され、出力端子に接続された第3電極パターンと、
前記第1電極パターン上に第1出力が配置された第1トランジスタ素子と、
前記第3電極パターン上に第2出力が配置された第2トランジスタ素子と、
前記第1電極パターンと前記第2電極パターンとの間に配置された内蔵コンデンサと、
前記正側電力端子と前記負側電力端子の前記第1トランジスタ素子および前記第2トランジスタ素子を封止する封止部から露出された側に跨るように接続されたスナバ回路と
を備えるパワーモジュールであって、
前記正側電力端子および負側電力端子は、それぞれ、前記パワーモジュールの底面よりも高い位置にて前記パワーモジュールの表面と平行方向に延伸する平板の金属板であり、
前記パワーモジュールは、
前記スナバ回路の第1の側面から延伸されて前記正側電力端子の平板面の上面に接続配置される第1金属板と、
前記スナバ回路の第1の側面とは異なる第2の側面から延伸されて前記負側電力端子の平板面の上面に接続配置される第2金属板と
をさらに備え、
前記スナバ回路は、前記第1金属板と前記正側電力端子との接続領域および前記第2金属板と前記負側電力端子との接続領域の領域外に設けられることを特徴とするパワーモジュール。 - 前記主基板は、セラミック基板を備えることを特徴とする請求項2に記載のパワーモジュール。
- 前記主基板は、多層構造のセラミック基板を備えることを特徴とする請求項3に記載のパワーモジュール。
- 前記内蔵コンデンサは、複数のコンデンサの直列接続によって構成されていることを特徴とする請求項1〜4のいずれか1項に記載のパワーモジュール。
- 前記封止部は、少なくとも一部がトランスファーモールド成型による樹脂層によって封止されていることを特徴とする請求項1〜5のいずれか1項に記載のパワーモジュール。
- 前記スナバ回路は、直列接続されたスナバコンデンサとスナバ抵抗とを備えることを特徴とする請求項1〜6のいずれか1項に記載のパワーモジュール。
- 前記スナバ抵抗に並列に接続された並列コンデンサを備えることを特徴とする請求項7に記載のパワーモジュール。
- 前記スナバ回路は、樹脂で封止され、前記樹脂から露出した端子が前記正側電力端子および前記負側電力端子と直接接続されることを特徴とする請求項1〜8のいずれか1項に記載のパワーモジュール。
- 前記トランジスタ素子は、SiC−MOSFET若しくはワイドギャップトランジスタであることを特徴とする請求項1〜9のいずれか1項に記載のパワーモジュール。
- 前記スナバコンデンサの値は、前記内蔵コンデンサの値の10倍以上であることを特徴とする請求項7に記載のパワーモジュール。
- 前記正側電力端子および前記負側電力端子を導通する電流の電流振動の時定数は、それぞれ5μs以下であるであることを特徴とする請求項1〜11のいずれか1項に記載のパワーモジュール。
- 複数のトランジスタ素子によって構成されたブリッジ回路と前記ブリッジ回路の両端に跨るように接続された内蔵コンデンサとを有するブリッジ部と、
前記ブリッジ部の両端にそれぞれ一端が接続され、他端が前記ブリッジ部を封止する封止部の外部に露出した正側電力端子および負側電力端子と、
前記正側電力端子および前記負側電力端子の露出された側に跨るように接続され、前記正側電力端子および前記負側電力端子の電流ノイズを低減するスナバ回路と
を備えるパワーモジュールであって、
前記正側電力端子および負側電力端子は、それぞれ、前記パワーモジュールの底面よりも高い位置にて前記パワーモジュールの表面と平行方向に延伸する平板の金属板であり、
前記パワーモジュールは、
前記スナバ回路の第1の側面から延伸されて前記正側電力端子の平板面の上面に接続配置される第1金属板と、
前記スナバ回路の第1の側面とは異なる第2の側面から延伸されて前記負側電力端子の平板面の上面に接続配置される第2金属板と
をさらに備え、
前記スナバ回路は、前記第1金属板と前記正側電力端子との接続領域および前記第2金属板と前記負側電力端子との接続領域の領域外に設けられることを特徴とするパワーモジュール。 - 前記スナバ抵抗の抵抗値は、前記正側電力端子および前記負側電力端子を導通する電流のピーク値を実質的に最小化可能な抵抗値であることを特徴とする請求項7に記載のパワーモジュール。
- 前記ブリッジ回路の出力端子は、前記正側電力端子および前記負側電力端子が露出する方向と反対側の方向に露出することを特徴とする請求項1または13に記載のパワーモジュール。
- 前記正側電力端子および前記負側電力端子を導通する電流の電流振動の時定数は、それぞれ5.0μs以下であることを特徴とする請求項13または14に記載のパワーモジュール。
- 請求項1〜16のいずれか1項に記載のパワーモジュールと、
前記スナバ回路に並列に接続された平滑コンデンサと
を備えることを特徴とするパワー回路。
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