TW560229B - Power converter package with enhanced thermal management - Google Patents
Power converter package with enhanced thermal management Download PDFInfo
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- TW560229B TW560229B TW092106844A TW92106844A TW560229B TW 560229 B TW560229 B TW 560229B TW 092106844 A TW092106844 A TW 092106844A TW 92106844 A TW92106844 A TW 92106844A TW 560229 B TW560229 B TW 560229B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/20409—Outer radiating structures on heat dissipating housings, e.g. fins integrated with the housing
- H05K7/20418—Outer radiating structures on heat dissipating housings, e.g. fins integrated with the housing the radiating structures being additional and fastened onto the housing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/42—Fillings or auxiliary members in containers or encapsulations selected or arranged to facilitate heating or cooling
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/14—Structural association of two or more printed circuits
- H05K1/141—One or more single auxiliary printed circuits mounted on a main printed circuit, e.g. modules, adapters
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/209—Heat transfer by conduction from internal heat source to heat radiating structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48245—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
- H01L2224/48247—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a bond pad of the item
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/42—Wire connectors; Manufacturing methods related thereto
- H01L24/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L24/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/00014—Technical content checked by a classifier the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/151—Die mounting substrate
- H01L2924/153—Connection portion
- H01L2924/1531—Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface
- H01L2924/15311—Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface being a ball array, e.g. BGA
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/151—Die mounting substrate
- H01L2924/153—Connection portion
- H01L2924/1532—Connection portion the connection portion being formed on the die mounting surface of the substrate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/181—Encapsulation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/30—Technical effects
- H01L2924/301—Electrical effects
- H01L2924/3011—Impedance
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0201—Thermal arrangements, e.g. for cooling, heating or preventing overheating
- H05K1/0203—Cooling of mounted components
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10431—Details of mounted components
- H05K2201/10439—Position of a single component
- H05K2201/10477—Inverted
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0058—Laminating printed circuit boards onto other substrates, e.g. metallic substrates
- H05K3/0061—Laminating printed circuit boards onto other substrates, e.g. metallic substrates onto a metallic substrate, e.g. a heat sink
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
- H05K3/3421—Leaded components
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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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Production Of Multi-Layered Print Wiring Board (AREA)
Description
560229 五、發明說明(1) 發明所屬之技術領域 本發明係關於電氣組件之封 ^ 強熱管理,高電氣互聯密度及^及安裝,特別關於具有加 成。 之功率轉換器之封裝及總 發明背景 參考第一圖,第一圖顯示根據 裝電氣組件之結構示意圖。如第— _ *功率轉換器中封
9b,9d及磁元件9c係直接由一導锅==力率消耗裝置如 板6上以達到較佳之熱傳導。功率組件σ 一文裝在一金屬基 路板⑽)5a形成電連接。磁元件9 —弓|腳^與印刷電 5a。其他必要組件如9a,9e則安 ^印刷電路板 二側上。此安裝可密封於一密封各 電路板5a之一側或 的熱管理及機械支援。 1 不出),其能達到好 第一圖中習知技藝所示之 裝置9b,9d由一單橫向引腳12 造方法複雜及不理想的增加成 磁元件之引腳電連接會造成高 連接阻抗損失及不佳之轉換器 裝。此外,功率消耗裝置9b, 的造成較低之功率密度封裝。 封裝有一缺點,因為功率消耗 與印刷電路板5a電連接,此製 t °同時’其功率消耗元件及 電雜散損耗,其將導致更多之 ^能’特別是高電流轉換器封 9d之體積較大,因此無可避免
美國專利N0· 5, 973, 929揭示另 一習知技藝方法以封裝電
560229 五、發明說明(2) 子组件於第二圖中之功率棘換 耗元件22至外μ Ϊ 中。在此封裝中,自功率消 印刷電路板2 ίίΐ 接1中’一銅塗層之通孔42在 塊43: = Ϊ程序中製備。功率消耗元件22之金屬 傳導絕緣器30及i 04連接在銅塗層通孔42之金屬基I2通過熱 此銅塗層通孔42,埶可自功率消旄# 。卩墊上通過 印刷電路柘28夕s 、\ 力羊為耗裴置印刷電路板28轉移至 26bm二 ,進一步傳導至金屬基板32。磁元件 ΓΛ 路板28上,並由一熱傳導軟塾34連接至 金屬基板3 2上以加強熱傳導。 第二圖之封裝之缺點為,因為功率消耗元件μ係安在 銅塗層通路42頂侧上,而銅塗層通路之底侧由教連接心 1 一04所佔據’總成降低了平板28電互聯密度。此外連接自功 το件22之熱同時將由銅塗層通孔42傳導至 平板28之溫度升高。· u m ^ 隨功率轉換器增加之功率密度及電流輸出能力拎加, tmnr裝於印刷電路板·上滿足高電“出需 t。此外’:率靖耗元件之功率損失及其傳導路徑隨輸出電 流之增加而大輻增加。由於電流密度及輸出電流之拎加, 何管理自功率裝置之熱及如何縮短互聯路‘ 封裝之重要問題。 巧刀手轉換口口 職是 x ^ ^ w <蜗失,乃思及改良 明之意念,發明出本案之『具加強熱管理之功率轉換器杂 裝』。 …
560229 五、發明說明(3) 發明内容 之用,ί t ^H的I為提供一種封裝技術以供功率轉換器 電:能並以低成本達到增強之熱管理及高互聯密度及改進之 η二習知技藝之缺失,本發明提 之封裝,一功率轉換器 刀手轉換 一子封#w^对裝方法及用於本發明封裝中之 導電表第以;:⑴-多層電路板,其具有第-^ Γt ί : 導電表面相對之第二導電表面;(2)一且 有至>一熱轉移表面之熱擴散元件;(3) 一且 一 2 晶:之::裝’其配置在多層電路板之、-導:表二 擴散兀件之熱轉移表面之間, 守电表面與熱 散元件之熱轉移表面經一導埶ς ^二裸路之頂部熱塊與熱擴 徑於其間,並具有複數個掛:、,、緣器連接,以提供熱傳導路 接觸以提供導電路徑於盆門與多電路板之一導電表面 配置在相反方向,俾導^二你;中該複數個對稱引腳及熱塊 本發明之一實施例中u:路徑分開。 達到電連接之需求。 複數個引腳亦可由焊球所取代以 本發明中,子封妒一 在多層電路板上。、砸70件封裝及其他被動組件均安裝 此封裴之概念之獨特特 封褒,功率消耗晶片為事^且^實際為功率消耗半導體之 有一高互聯密度。子封二裝,子封裝中,因此,使封裝 W腳(或垾球),i + = 裸路之頂部熱塊及複數個對稱 ”中之複數個對稱5|腳及熱塊配置成相反方 五、發明說明(4) =在本發明之-實施例中,熱 當然’熱塊亦可面向下,而引線面向引線則面向下。 散元移置在多層電路板之導電表面與熱揭 彳!表:;;於:子:裝之引腳電連 熱擴放凡件之熱轉移表面適於盥;私也仏等冤玲 絕緣器之熱連接,以提供熱傳導路;:於』f;自:經熱傳導 亦可由連接之熱擴散元件轉移;。、因:,件之熱 熱路徑分開,而達到加強之熱管電路徑與導 在本發明之一實施似由“理及改進之電性能。 晶片。為了增加之封裝密度及::裝尚包f控制晶片及被動 片,控制晶片及被動晶片;Α: ^性能,功率消耗晶 :有-晶片之子封裝可簡化二寺別是, 表面安裝封裝。 ’裸路向上之熱塊之標 本發明之另一特性提供功率韓拖+ I 括:⑴提供一具有至少一導之方法,包 一具有至少一埶轉移表面表面之多層電路板;(2)提供 功率消耗晶片:子封裝元件“3)將具有至少- 散元件之熱轉移表面之間:日電路板之導電表面與熱: 熱塊及複數個向下之對稱一子封裝具有裸露之頂部向 適於與子封裝之引腳電;:腳,:此多層電路板之導電表1 擴散元件之熱轉移表:連;於供:導電路徑於其間 封裝之熱塊經-導熱絕綾2與至少有一功帛消耗晶片之- 間;導電路徑與導熱路徑為分^連接以提供導熱路徑於其 560229
本發明另一特性提供一子封裝。為了滿足各 4 一衍生技術之子封裝。在此技術中,有引腳之分2 ^ 耗兀件有一裸露之底部熱塊,並與子封裝之熱塊:=消 熱連接。控制元件及被動元件由子封裝之熱塊底表而及 軌跡與功率消耗元件為電連接。子封裝由複數個對藕$導電 球與功率轉換器之母板為電連接,及與子封裝之=或 接。因此,子封裝之導電路徑與導熱路徑分開。“、、鬼為熱連 本發明可由以下之說明及伴隨圖式而更為理解,其中· 本案得藉由下列圖示與詳細說明,俾得一 解。 τ 又冰入之了 實施方式 雖然本發明可以有各種不同形式的實施例,為簡化 =中列舉某些較佳實施例,詳細描述及說明於4 I二:本處所揭露之内容係例示本發明之原理,但本發明 之申请專利範圍非僅侷限於下述特定實施例。 ::圖為本發明功率轉換封裝之較佳實施例 圖2圖所示’功率轉換器之所有電連接均經由裳在多層7 刷電路板40 2而達成以便有一高互聯密度。一埶 曰 經導熱絕緣器40 6直接連接至子封裝4〇1之裸露頂部執塊4〇^ ,^件4G7 4元件4G7可裝在印刷電路板4()2之切孔 在印刷電路板402之頂側。控制裝置4〇8及被動部分可裝
$ 9頁 560229 五、發明說明(6) ' 在印刷電路板402之一侧或二侧,熱擴散元件4〇4亦可連接在 其上。可使用一個硬環氧樹脂蓋子41 0以便將組件與環境隔 離。 以本發明可知’子封裝401係配置在多層印刷電路板402 ,熱擴政兀件404之間。以此方式,多層印刷電路板4()2適於 二子1裝401之引腳4〇3電連接以提供導電路徑於其間。熱擴 刼=I/04、適於與子封裝401之熱塊40 5經導熱絕緣器40 6成 …連接,以提供導熱路徑於其間。 鏟銘裝401之熱可經由子封裝401之頂部熱塊4°5直接 連接之熱擴散元件404並轉移至外部。電連接僅發生 ;f且;;4二引腳购 :組裝可實現導電路徑與導熱路徑分開,及因此可提高熱管 之有而土子封裝401所消耗之功率由於熱擴散元件4°4 ^ 不易冷卻,一額外吸熱器411可連接至熱擴 絕緣積該額外吸熱器411亦可經由導熱 4 7 Λ接;^接士子封裝401之裸露頂部塊4〇5,及磁元件 4 U (。子封裝4 〇 1由複數個對 Τ -^ ,,403 , ^ ^ , ^ 此熱擴散器404有一良好之支浐,板402之一表面上,因 封細之共面。準i,:;;子;;丄在安裝期間提供子 轴而言,二側上均有相同數目之引^對子封裝4〇1之一 子封裝4 0 1受到^ ^氏教媳姑旛4» …機械應力,因為熱塊405以導絕緣
第10頁 560229 五、發明說明(7) 器406與熱擴散元件404連接之故。因此,本發明之總成不作 有極佳之熱性能及高互聯密度,且有製造能力及低成本。 精於此技術人士當瞭解,子封裝4〇 i之熱塊4〇5可選自金 屬材,,陶瓷,金屬基複合材料及絕緣材料基板及其組合、, 不論是傳統或稍後發展者。複數條對稱引線4〇3可選自··雙、 四條或圓形分布周邊引腳。多層電路板4〇2可選自:印製線路 板及陶瓷混合電路板。熱擴散元件4〇4可選自含金屬,陶瓷 及金屬基複合材料之一組及其組合。 在另一實施例中,參考第四圖,具有至少一功率消耗晶 片之子封裝401,401a亦可裝在印刷電路板4〇2之二侧。熱擴 散元件404,404a可由導熱絕緣器4 06自總成之二侧連接Ϊ因 此,自裝在印刷電路板4 〇 2二側之子封裝4 〇1,4 〇 1 a可直接由 裸露之頂部塊405,405a轉移至熱擴散元件4〇4及404a,再進 一步轉移至外部。磁元件407可自導熱絕緣器4〇6之二側與熱 擴散元件404 ’404a連接。其他組件如控制元件408及低功率 損失之被動元件409亦可自二側與熱擴散元件熱連接。因 此,總成可進一步改進功率轉換器之熱性能,及達到較高之 功率岔度及一低輪廓之功率轉換器。本發明之封裝方法亦可 用以供垂直安裝之轉換器。 第五圖A顯示本發明第三圖A中之子封裝4〇1之構造。為 改進熱特性,本發明備有一發展,即實施引腳之修正,使裸 露之頂部塊40 5向上,引線4 03向下。如第五圖a所示,功率 消耗晶片416,416a及被動晶片417直接與熱塊4〇5連接,其 中該熱塊405可為一隔離之金屬基板(IMS)或金屬化陶竟基
IH
第11頁 560229 五、發明說明(8) 板。可使用線接合或帶自動接合(TAB)414供晶片 電軌跡418。可利用環氧樹脂模製複合物415以密封此 導 及使塊405之表面裸露,引腳4〇3可製造成對稱安排,如雙 二或Λ 形 Λ 布周邊引腳,其中實施之修正可提供向下引腳 彼表祐二裝至印刷電路板,及提供向上熱塊405以供哉連 接。封裝可由引腳403與印刷電路板電連接。經由此封裝、,連 熱擴散το件可由導熱絕緣器直接連接至裸露之頂部塊^, 以將功率消耗晶片41 6,41 6a熱連接至外部。因此,自 消耗晶片41 6,41 6 a之孰可由頂邱也说/1 n c 、 ^至、隹牟熱塊405轉移至熱擴散元件 擴散元件405轉移w,因&保持冷之 印刷電路板。 τ 7 < 之开4考::口B,第五圖A中之子封裝401亦可製成第五圖6 im!五圖a之結構,引腳4〇3由焊球4〇3a所取代。 烊球403a引腳有更小型化封裝及更低之電雜散㈣,因此, 電性能可進-步改進。為了增加封裝密度及改進電性能,功 =耗Λ片广416a,控制裝置晶片(未示出)及被動晶片 417可、、且/為-子封裝。此子封裝可簡化為—標準表面安裝 ,封裝有-面向上之裸露頂部塊,而子封裝僅容納一 4 1 6 0 ’ 灿施i考建議一第五圖a之衍生封裝技術以滿足发 他應用。此技術中,分立之功率消耗元件5〇1, 5〇13有一裰、 露之底部熱塊502及電連接引腳5〇3,並與子封裝5〇〇a =4'底4熱塊502及引腳503連接,以提供電連接與接 於分立之功率消耗元件501,501a與子封裝5〇〇3之 560229
子封裝4〇1之熱塊504可選自金屬,陶竟,金屬基 複合材料及絕綾今属其& β甘{人 杜女& π金屬基板其組合。控制元件505及被動元 :亦與子封裝500a之熱塊504連接。在分立功率消耗元 仵bUl,501a,控制元件5〇5及被動元件5〇6内之電内連接係 由熱塊504之向下表面上之導電軌跡(未示出)所達成。子封 裝500a由複數個對稱引腳5〇7與功率轉換器之母板電連接, 及由熱塊504連接至外侧。因此,子封裝5〇〇3之導電路徑盥 導熱路徑分開。 〃 如第六圖B所示,複數個對稱焊球5 〇 7 a可負責自封裝 5 0 0b與功率轉換器母板間之電連接。 ^ 本發明已以最實用及較佳實施例方式說明如上,應瞭 解’本發明不受限於此等實施例,反之,並欲涵蓋各種修改 及與本發明申請專利精神與範圍以内之相似安排,該等修改 將被認為廣泛之解釋以容納所有該修改及相似結構。 本案得由熟知此技術之人士任施匠思而為諸般修飾,然皆不 脫如附申請專利範圍所欲保護者。
560229 圖式簡單說明 圖示簡單說明 第一 功率消耗 第二 率消耗元 第三 具有功率 第三 成放大圖 第四 有至少一 第五 一功率消 第五 功率消耗 第六 分立功率 第六 分立之功 圖為習知技術之功率轉換器之剖面側視圖,其中之 元件,其單橫向引腳連接在金屬基板; 圖為習知技術功率轉換器之剖面侧視圖,其中自功 件之熱經由PCB之銅塗層通孔轉移; 圖為本發明之功率轉換器封裝之剖面側視圖,其中 消耗晶片之子封裝係裝在PCB之一側; 圖A為第二圖中之具有功率消耗晶片之子封裝之總 圖為本發明功率轉換器封裝之剖面側視圖,其中具 功率消耗晶片之子封裝係裝在PCB之二侧; 圖A為本發明之子封裝之剖面側視圖,封裝至少有 耗晶片及一頂部熱塊及向下引腳; 圖B為本發明子封裝之剖面侧視圖,封裝至少有一 晶片及頂部熱塊及向下之焊球; 圖A為本發明子封裝之剖面側視圖,封裝至少有一 消耗封裝’及一頂部熱塊及向下之引腳; 圖B為本發明子封裝之剖面側視圖,封裝至少有一 率消耗封襞,一頂部熱塊及向下之球。 圖示符號說明 5a 、 28 : PCB 6、3 2 :金屬基板
第14頁 560229 圖式簡單說明 8、3 0、4 0 6 :導熱絕緣器 9a、 9 e :組件 9b、 9 d、2 2 :功率消耗元件 9c、 26b、407 :磁元件 12 : 單橫向引腳 34 : 導熱軟墊 42 : 銅塗層通孔 43 : 金屬塊 104 :熱連接 401 、401a 、 500a 、500b :子封裝 402 :多層PCB 403 、403a、5 0 3 ··弓丨腳 404 、4 0 4 a ·熱擴散元件 405 、5 0 2、5 0 4 :熱塊 408 :控制元件 409 :被動元件 410 :硬環氧樹脂蓋 411 、4 11 a :吸熱器 414 :線接合或帶自動接 合(TAB) 415 :模製複合物 416 、4 1 6 a :功率消耗晶 片 417 •被動晶片 418 :導電軌跡 501 、5 0 1 a :功率消耗元 件
第15頁 560229 圖式簡單說明 5 0 5 :控制裝置 5 0 6 :被動元件 507 :對稱引腳 imi
Claims (1)
- 560229 六、申請專利範圍 1.—種供功率轉換器之封裝,包含. 對:;以;:具有第一導電表面及與該第-導電表面相 右具有至少:熱轉移表面;及 電路板之二導電表面i該:片’其係配置在該多層 該熱轉移表面接觸,以提供導緣:與該熱擴散元件之 對稱之引腳與該多層電路板之及具有複數個 導電路徑於其間,直中兮遵赵電表面之一?接,以提供 相反方向,俾導電路徑;該導及該熱塊係配置在 引腳則面向下。 裝,其中該熱塊係面向上,該 3引:nt範圍第1項之封裝,其中該熱塊係面向下,該 4眘=申請專利範圍第】項之封裝 實際上選自由金屬,陶竞 :中該子封裝之該熱塊裔 及其組合組成之一組。 、土複δ材料及絕緣金屬基: 5. 如申請專利範圍第丨項之 實際上選自由雙、四條、/八’其中該複數個對稱引腳係 6. 如申請專利範圍第i項之封^刀布之周邊引腳組成之-組 上選自由印製線路板及陶 、,/、十該多層電路板係實際 7. 如申請專利範圍第1 g之封/ 1路板組成之—組。 ^ ^ ^ ^^ ^ Hi $ 17頁 560229 六、申請專利範圍 組。 8·如申請專利範園第1項之封裝,i 乂 多層電路板之一表面上。 /、 子封裝係安裝在該 9·如申請專利範圍第丨項之封裝,其 多層電路板之二表面上。 〜封裝係安裝在該 1 0 ·曰一種封裝一功率轉換器之方法,包含· ,供一具有至少一導電表面之多層電路板; 提供一具有至少一熱轉移面之熱擴散元件;及 配置一具有至少一功率消耗晶片之子协 電表面與該熱擴散元件之該熱轉移:面:間u: 之頂部熱塊及複數條對稱引腳,其中該多層電库 = ί間,該熱擴散元件之該熱轉移表面ί於 間,及該導電路徑係與該導熱路徑為分Ϊ供導熱路徑於其 第10項之方法,其中該子封裝之該熱塊 板屬;陶竞,金屬基複合材料及絕緣金屬! ^ <- 一 組0 係實際上itVt圍第10項之方法’其中該複數個對稱引腳 U.如申請專利範V:條、圓形分布周邊引腳組成之-組。 際上選自由印製/第ig項之方法,其中該多層電路板係實 14.如申請專利\線路板及陶竟混合電路板組成之一組。 際上選自金屬圍第1 〇項之方法’其中該熱擴散元件係實 究及金屬基複合材料及其組合組成之一第18頁 560229 六、申請專利範圍 組。 "Λν^ΛΥΓ/" — *——^ 種安排於供功率轉換器封裝中之, f少一功率消耗晶片; 匕3. 提供ΐίΞϋ消ϊ晶片接觸以自功率消耗晶片轉移熱,^ 複數條對稱引腳電連接至 徑,其中該複數條對摇引綠耗曰曰片以k供一導電库 導電路徑與導熱路徑分開、。以土板配置在相反方向,以令 及金屬塊及其組合/ ·是基板’一絕緣器金屬基板, 19至一Λ安八排:供功率轉換器封裝中之子封裝,包含·· 至少一刀立之功率消耗元件; 耗:ίϊίί分立之功率消耗元件接觸以自該分立之功率、、* 耗凡件傳輸熱以提供一導熱路徑;& 羊4 腳與該分立功率消耗元件連接以提 使導電路徑與導熱路徑分開。▲扳係配置在相反方向, 2〇.如申請專利範圍第19項之子封 i 制元件及被動元件。 八中該基板更S .
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-
2003
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- 2003-04-15 CN CNB031104827A patent/CN100456472C/zh not_active Expired - Lifetime
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Also Published As
Publication number | Publication date |
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CN100456472C (zh) | 2009-01-28 |
TW200306138A (en) | 2003-11-01 |
US6724631B2 (en) | 2004-04-20 |
US20030198022A1 (en) | 2003-10-23 |
CN1638114A (zh) | 2005-07-13 |
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