阅读说明：本技术 用于2.5d/3d ic封装的定点冷却的热电冷却器(tec) (Thermoelectric cooler (TEC) for fixed point cooling of 2.5D/3D IC packages ) 是由 梅勒妮·博谢敏 马德胡苏丹·延加尔 克里斯托弗·马隆 格雷戈里·里姆瓦尔 于 2018-06-12 设计创作，主要内容包括：虽然使用2.5D/3D封装技术产生紧凑型IC封装,但是其同样针对热管理出现挑战。根据本公开的集成组件封装提供了一种用于包括与多个低功率组件集成的高功率组件的2.5D/3D IC封装的热管理解决方案。由本公开提供的所述热解决方案包括传统的散热器或者冷平板的被动式冷却和热电冷却(TEC)元件的主动式冷却的混合。根据本公开的某些方法包括：在包括位于邻近于高功率组件的多个低功率组件的IC封装中在正常操作期间控制温度,其中,所述高功率组件在正常操作期间相对于所述低功率组件中的每个低功率组件产生更多的热量。(Although the use of 2.5D/3D packaging technology creates a compact IC package, it also presents challenges for thermal management. An integrated component package according to the present disclosure provides a thermal management solution for a 2.5D/3D IC package that includes a high power component integrated with a plurality of low power components. The thermal solution provided by the present disclosure includes a mixture of passive cooling of a conventional heat sink or cold plate and active cooling of thermoelectric cooling (TEC) elements. Certain methods according to the present disclosure include: controlling temperature during normal operation in an IC package including a plurality of low power components located adjacent to high power components, wherein the high power components generate more heat during normal operation relative to each of the low power components.)

1. An integrated component package comprising:

a plurality of low power components and high power components coupled to a surface of a package substrate, wherein the low power components are located adjacent to the high power components, each of the plurality of low power components and the high power components generate heat during normal operation, and the high power components generate more heat during normal operation relative to each of the low power components;

a package lid coupled to the package substrate and covering the plurality of low power components and the high power component;

a cold plate physically thermally coupled to the encapsulation cover, the cold plate comprising a base surface and a top surface, wherein the top surface is opposite the base surface relative to the encapsulation cover; and

a plurality of thermoelectrically cooled TEC elements, wherein the TEC elements are sized and positioned within the integrated component package such that at least a substantial portion of a footprint of the respective TEC element protruding in a direction perpendicular to the surface of the substrate to which the low and high power components are coupled overlaps at least one of the low power components and substantially no portion of the footprint of the TEC element protruding in the direction perpendicular to the surface of the substrate to which the low and high power components are coupled substantially overlaps the high power component.

2. The package of claim 1, wherein the TECs are integrated into the cold plate such that a first side of each TEC is embedded in the base surface of the cold plate and a second side of each TEC is physically thermally coupled to the package cover.

3. The package of claim 2, wherein the base surface of the cold plate comprises a plurality of insulating slots, each slot positioned adjacent to one of the plurality of TECs.

4. The package of claim 1, wherein the TECs are integrated into the package cover such that a first side of each TEC is embedded in the package cover and a second side of each TEC is physically thermally coupled to the base surface of the cold plate.

5. The package of claim 1, wherein the TECs are integrated into the package cover such that a first side of each TEC is embedded in the package cover and a second side of each TEC is physically thermally coupled to the low power component.

6. The package of claim 1, wherein the TECs are integrated into the package cover such that a first side of each TEC is coupled and thermally coupled to the base surface of the cold plate and a second side of each TEC is physically thermally coupled to the low power component.

7. The package of claim 1, wherein a first side of each TEC is embedded in the package substrate and a second side of each TEC is physically thermally coupled to the low power components.

8. The package of claim 1, wherein each TEC is independently powered.

9. A method of assembling an integrated component package, the method comprising:

coupling a plurality of low power components and high power components to a surface of a package substrate, wherein the low power components are located adjacent to the high power components, each of the plurality of low power components and the high power components generate heat during normal operation, and the high power components generate more heat during normal operation relative to each of the low power components;

coupling a package lid to the package substrate, wherein the package lid covers the plurality of low power components and the high power component;

physically thermally coupling a cold plate to the package lid, the cold plate comprising a base surface and a top surface, wherein the top surface is opposite the base surface relative to the package lid; and

sizing and positioning a plurality of thermoelectric cooling TEC elements within the integrated component package such that at least a substantial portion of a footprint of a respective TEC element protruding in a direction perpendicular to the surface of the substrate to which the low-power component and the high-power component are coupled overlaps at least one of the low-power components, and substantially no footprint of the TEC element protruding in the direction perpendicular to the surface of the substrate to which the low-power component and the high-power component are coupled substantially overlaps the high-power component.

10. The method of claim 10, further comprising: integrating the TECs into the cold plate such that a first side of each TEC is embedded in the base surface of the cold plate and a second side of each TEC is physically thermally coupled to the package cover.

11. The method of claim 11, further comprising: including a plurality of insulating slots in the base surface of the cold plate such that each slot is positioned adjacent to one of the plurality of TECs.

12. The method of claim 10, further comprising: integrating the TECs into the package cover such that a first side of each TEC is embedded in the package cover and a second side of each TEC is physically thermally coupled to the base surface of the cold plate.

13. The method of claim 10, further comprising: integrating the TECs into the package cover such that a first side of each TEC is embedded in the package cover and a second side of each TEC is physically thermally coupled to the low power components.

14. The method of claim 10, further comprising: integrating the TECs into the package cover such that a first side of each TEC is coupled and thermally coupled to the base surface of the cold plate and a second side of each TEC is physically thermally coupled to the low power component.

15. The method of claim 10, further comprising: integrating the TECs into the package cover such that a first side of each TEC is coupled and thermally coupled to the low power component and a second side of each TEC is physically thermally coupled to the low power component.

16. The method of claim 10, further comprising: integrating the TECs into the package cover such that a first side of each TEC is embedded in the package substrate and a second side of each TEC is physically thermally coupled to the low power component.

17. The method of claim 10, further comprising: each TEC is independently powered.

18. A method, comprising:

controlling temperature during normal operation in an integrated component package that includes a package lid that covers a plurality of low-power components located adjacent to high-power components and that generates higher heat during normal operation relative to each of the low-power components by:

providing specific location cooling of the package lid at a localized area of higher thermal sensitivity, wherein the localized area of higher thermal sensitivity is adjacent to the low power components and a localized area of lower thermal sensitivity is adjacent to the high temperature components; and is

Providing cold plate cooling of the encapsulation cover.

19. The method of claim 19, wherein the location-specific cooling of the encapsulation cover at the localized region of higher thermal sensitivity comprises active cooling and the cooling of the encapsulation cover at the localized region of lower thermal sensitivity comprises passive cooling.

20. The method of claim 20, wherein:

providing location-specific active cooling of the package lid by multiple TECs, an

Sizing and positioning the plurality of thermoelectric cooled TEC elements within the integrated component package such that at least a substantial portion of a footprint of a respective TEC element protruding in a direction perpendicular to a surface of a substrate to which the low power component and the high power component are coupled overlaps with at least one of the low power components, and substantially no footprint of the TEC element protruding in the direction perpendicular to the surface of the substrate to which the low power component and the high power component are coupled substantially overlaps with the high power component.

21. The method of claim 20, wherein the TECs are integrated into the cold plate such that a first side of each TEC is embedded in the base surface of the cold plate and a second side of each TEC is physically thermally coupled to the package cover.

22. The method of claim 21, wherein the base surface of the cold plate comprises a plurality of insulating slots, each slot positioned adjacent to one of the plurality of TECs.

23. The method of claim 21, wherein the TECs are integrated into the package cover such that a first side of each TEC is embedded in the package cover and a second side of each TEC is physically thermally coupled to the base surface of the cold plate.

24. The method of claim 21, wherein the TECs are integrated into the package cover such that a first side of each TEC is embedded in the package cover and a second side of each TEC is physically thermally coupled to the low power component.

25. The method of claim 21, wherein the TECs are integrated into the package cover such that a first side of each TEC is coupled and thermally coupled to the base surface of the cold plate and a second side of each TEC is physically thermally coupled to the low power component.

26. The method of claim 21, wherein the TECs are integrated into the package cover such that a first side of each TEC is coupled and thermally coupled to the package cover and a second side of each TEC is physically thermally coupled to the low power component.

27. The method of claim 21, wherein a first side of each TEC is embedded in the package substrate and a second side of each TEC is physically thermally coupled to the low power component.

28. The method of claim 21, wherein each TEC is independently powered.

Background

High Bandwidth Memory (HBM) provides memory bandwidth far beyond that provided by conventional memory devices, such as DDR4 and GDDR5, and saves cost and power. HBMs are designed as in-package memory and are typically located next to a processor or ASIC. Multiple HBM components may be integrated with a single ASIC using 2.5D/3D packaging techniques. Although the use of 2.5D/3D packaging technology creates a compact IC package, it also presents challenges for thermal management.

Disclosure of Invention

According to one aspect, the subject matter described in the present disclosure relates to an integrated component package comprising: a plurality of low power components and high power components coupled to a surface of the package substrate. The low power component is located adjacent to the high power component. Each of the plurality of low power components and the high power component generates heat during normal operation, and the high power component generates a higher amount of heat during normal operation relative to each of the low power components. The package includes: a package cover coupled to the package substrate and covering the plurality of low power components and the high power components. The package includes: a cold plate physically thermally coupled to the encapsulation cover, the cold plate comprising a base surface and a top surface. The top surface of the cold plate is opposite the base surface of the cold plate relative to the encapsulation cover. The integrated component package further comprises: a plurality of thermoelectric cooling (TEC) elements. The TEC elements are sized and positioned within the integrated component package such that at least a substantial portion of a footprint of the respective TEC elements, protruding in a direction perpendicular to a surface of a substrate to which the low and high power components are coupled, overlaps with at least one of the low power components. The TEC elements are also sized and positioned such that substantially no portion of the footprint of the TEC elements protruding in a direction perpendicular to the surface of the substrate to which the low and high power components are coupled substantially overlaps the high power component.

According to another aspect, the subject matter described in the present disclosure relates to a method of assembling an integrated component package, the method comprising: a plurality of low power components and high power components are coupled to a surface of a package substrate. The low power component is located adjacent to the high power component. Each of the plurality of low power components and the high power component generates heat during normal operation, and the high power component generates a higher amount of heat during normal operation relative to each of the low power components. The method comprises the following steps: the package lid is coupled to the package substrate. The encapsulation cover covers the plurality of low power components and the high power components. The method comprises the following steps: physically thermally coupling a cold plate to the encapsulation cover, the cold plate comprising a base surface and a top surface. The top surface is opposite the base surface relative to the package cover. The method comprises the following steps: sizing and positioning the plurality of thermoelectric cooling (TEC) elements within the integrated component package such that at least a substantial portion of a footprint of the respective TEC elements that protrude in a direction perpendicular to a surface of a substrate to which the low and high power components are coupled overlap at least one of the low power components and substantially no portion of the footprint of the TEC elements that protrude in a direction perpendicular to the surface of the substrate to which the low and high power components are coupled substantially overlap the high power component.

According to another aspect, the subject matter described in this disclosure relates to a method of controlling temperature during normal operation in an integrated component package comprising a package lid covering a plurality of low power components adjacent to high power components, wherein the high power components generate a higher amount of heat during normal operation relative to each of the low power components. The method comprises the following steps: providing site specific cooling of the encapsulation cover at localized areas of higher heat sensitivity. The localized areas of higher thermal sensitivity are associated with heat generated by the low power components. The method of controlling temperature during normal operation in an integrated component package further comprises: cooling of the encapsulation cover is provided at the local areas of lower heat sensitivity. Localized areas of lower heat sensitivity are associated with heat generated by high temperature components.

Drawings

The foregoing will be apparent from the following more particular description of example embodiments of the invention, as illustrated in the accompanying drawings. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating embodiments of the invention.

Fig. 1A is a schematic diagram of a side view of a first integrated component package according to an example embodiment.

Fig. 1B is a schematic diagram of a top view of the integrated component package shown in fig. 1A.

Fig. 2 is a schematic diagram of a side view of a second integrated component package according to an example embodiment.

Fig. 3 is a schematic diagram of a side view of a third integrated component package according to an example embodiment.

Fig. 4 is a schematic diagram of a side view of a fourth integrated component package according to an example embodiment.

Fig. 5 is a schematic diagram of a side view of a fifth integrated component package according to an example embodiment.

Fig. 6 is a flow chart of a method for assembling the integrated component package shown in fig. 1-5.

Fig. 7 is a flow chart of a method for controlling temperature during normal operation of the integrated component package shown in fig. 1-5.

For purposes of clarity, not every component may be labeled in every drawing. The drawings are not intended to be drawn to scale. Like reference numbers and designations in the various drawings indicate like elements.

Detailed Description

High Bandwidth Memory (HBM) provides memory bandwidth far beyond that provided by conventional memory devices, such as DDR4 and GDDR5, and saves cost and power. HBMs are designed as in-package memory and are typically located next to a processor or ASIC. Multiple HBM components may be integrated with a single by using 2.5D/3D packaging techniques. Although 2.5D/3D packaging technology produces compact IC packages, it also presents challenges for thermal management. Example 2.5D/3D packages may include an ASIC placed at the center of the package enclosed by a plurality of HBM components. In such a package configuration, the ASIC will typically dissipate approximately 90% of the overall package power during normal operation. Although HBM components only dissipate 10% of the overall package power, they drive the thermal design of the IC package for a variety of reasons. First, the internal thermal resistance (encrustation) of low power HBMs is typically higher than that of high power ASICs. Furthermore, the maximum junction temperature (Tj) requirement of the low power HBM is lower than the maximum junction temperature (Tj) requirement of the ASIC. That is, the low power HBM is more temperature sensitive than the high power ASIC. Thus, for low power HBM components, the package's case temperature or Tcase (defined as the temperature of the package lid or heat sink that contacts the base of the cold plate) requirement will be much lower than if the package did not include a low power HBM component at all or if the low power HBM component had a lower junction-to-case resistance than the high power ASIC. Therefore, heat sinks (or cold plates) used with such packages are typically required to have very low thermal resistance (less than 0.04C/W) to meet the target Tcase requirements of the package. However, achieving such a low thermal resistance for the heat sink (or cold plate) is complicated and expensive. Accordingly, it is desirable to have a thermal management solution for a 2.5D/3D IC package having a high power component integrated with a plurality of low power components that reduces the temperature of the low power components during normal operation with reduced impact on the thermal performance requirements of the heat sink (or cold plate) of the package.

An integrated component package according to the present disclosure provides a thermal management solution for a 2.5D/3D IC package that includes a high power component integrated with a plurality of low power components that reduces the temperature of the low power components during normal operation without unduly impacting the thermal performance requirements of the heat sink or cold plate of the package. The thermal solutions provided by the present disclosure include a mixture of passive cooling of a conventional heat sink or cold plate and active cooling of thermoelectric cooling (TEC) elements. Generally, heat sink or cold plate cooling is more economical than TEC cooling because for a given heat source, the coefficient of performance (COP) of a TEC element can decrease well below 1 as the temperature gradient between the hot and cold sides of the TEC element increases. Thus, embodiments according to the present disclosure utilize a heat spreader/cold plate to handle most of the heat dissipation of the package, while in localized areas of higher thermal sensitivity but lower power consumption (and therefore, lower thermal build-up), auxiliary heat dissipation is provided by the TEC elements. For example, in a package that includes a low power, more thermally sensitive HBM component and a high power, less thermally sensitive ASIC component, the TEC is located in the package such that the footprint of the TEC elements generally overlaps portions of the low power HBM component and substantially no portion of the footprint of the TEC elements overlaps the high power ASIC component. In some embodiments, the TEC footprint may completely cover the HBM component. In some embodiments, the TEC footprint may cover only a small portion of the surface area of the HBM component. The placement of the TEC elements relative to other package components helps to reduce the temperature at the localized area of the package cover covering the low power, more temperature sensitive HBM component. Further, placing the TEC elements in local areas where heat dissipation is low exposes the TEC elements to a smaller temperature gradient between the hot and cold sides of the TEC elements, thereby increasing the COP of the TEC elements relative to TECs that are close to the high power dissipating components. Furthermore, offloading the cooling portion of the low power HBM component to the TEC elements allows the use of simpler, less expensive heat sinks (or cold plates) with higher thermal resistance (and higher Tcase) while still keeping the low power HBM component within its more stringent thermal specifications.

Certain methods according to the present disclosure include: controlling temperature during normal operation in an IC package including a plurality of low power components adjacent to a high power component, wherein the high power component generates a higher amount of heat relative to each of the low power components during normal operation. The method for controlling temperature in an IC package further comprises: providing site specific cooling of the encapsulation cover at localized areas of higher heat sensitivity. The localized regions of higher thermal sensitivity are proximate to the low power components and the localized regions of lower thermal sensitivity are proximate to the high power components. The method for controlling temperature in an IC package further comprises: conventional passive cooling of the package cover is provided. In some embodiments, the entire package cover including the area cooled by the TEC elements may be cooled by conventional passive cooling.

Fig. 1A is a schematic diagram of a side view of a first integrated component package 100 according to an example embodiment. Fig. 1B is a schematic diagram of a top view of the first integrated component package 100 shown in fig. 1A. The first integrated component package 100 includes four low power components, such as the HBMs 110 a-110 d (collectively HBMs 110) shown in fig. 1B. Only the first HBM110 a and the second HBM110 b are shown in fig. 1A. The first integrated component package configuration also includes high power components, such as ASIC 105. The low power HBM110 is located adjacent to the high power ASIC 105. During normal operation, the low power HBM110 and the high power ASIC105 generate heat, wherein the high power ASIC105 generates more heat relative to each low power HBM 110.

The low power HBM110 and the high power ASIC105 are coupled to a surface of the package substrate 115 via an interposer 125. The low power HBM110 and the high power ASIC105 are electrically connected to the PCB120 via the interposer 125 and the package substrate 115. The first integrated component package arrangement further comprises a package lid 130 coupled to the package substrate 115. The package cover 130 covers the plurality of low power HBMs 110 and the high power ASIC 105. During normal operation, the first Thermal Interface Material (TIM)145a deposited between the package lid 130 and the low power HBM110 and the high power ASIC105 reduces contact resistance, but increases thermal coupling between the package lid 130 and the low power HBM110 and the high power ASIC 105.

The first integrated component package 100 also includes a cold plate 135 physically thermally coupled to the package lid 130. The cold plate 135 includes a base surface and a top surface opposite the base surface relative to the encapsulation cover 130. The cold plate 135 also includes a plurality of fins. During normal operation, the second Thermal Interface Material (TIM)145b deposited between the base surface of the cold plate 135 and the package lid 130 reduces the contact resistance, but increases the thermal coupling between the cold plate 135 and the package lid 130.

The first integrated component package 100 includes a plurality of thermoelectric cooling (TEC) elements, such as TECs 140a through 140j (collectively referred to as TECs 140) shown in the top view of fig. 1B. Only first TEC140 a and second TEC140 b are shown in the side view of fig. 1A. Referring to fig. 1B, the TECs 140 are sized and the TECs 140 are positioned such that at least a majority of the footprint of the respective TEC140 that protrudes in a direction perpendicular to the surface of the package substrate to which the low power HBM110 and the high power ASIC105 are coupled overlaps at least one low power HBM 110. Thus, as shown in fig. 1B, substantially no portion of the footprint of TEC140 protruding in a direction perpendicular to the surface of package substrate 115 to which low power HBM110 and high power ASIC105 are coupled substantially overlaps with high power ASIC 150. As shown in fig. 1B, none of the TEC elements have their footprints overlapping the high power ASIC 105.

In the first integrated component package 100, the TECs 140 are integrated into the cold plate 135 such that a first side of each TEC140 is embedded in a base surface of the cold plate 135 and a second side of each TEC140 is physically thermally coupled to the package cover 130. During normal operation, the second thermal interface material (such as TIM 145b located between the base surface of cold plate 135 and package lid 130) reduces contact resistance, but increases thermal coupling between TEC140, cold plate 135, and package lid 130. TEC140 is powered by routing one or more electrical connections 150 through the base surface of cold plate 135 to an external power source 155 on PCB 120. By using closed loop control, the voltage and current of the TEC are adjusted to maintain the maximum junction temperature (Tj) of the low power HBM110 at a target value.

As mentioned above, during normal operation, the low power HBM110 and the high power ASIC105 generate heat, wherein the high power ASIC105 generates more heat relative to each low power HBM 110. Since the low power HBM110 and the high power ASIC105 are thermally coupled to the package lid 130, the heat generated by the low power HBM110 creates local areas of lower temperature in the package lid 130, while the heat generated by the high power ASIC105 creates local areas of higher temperature in the package lid 130. Furthermore, the TEC140 is remote from the high power ASIC105, making the TEC140 more susceptible to heat dissipated by the low power HBM 140 than to heat generated by the high power ASIC 105. This placement of the TEC140 helps to reduce the temperature in the local area of the package cover 130 that covers the low power HBM 110. Further, the placement of the TEC140 in a localized region of lower temperature results in a smaller temperature gradient between the hot and cold sides of the TECs 140, and therefore, less impact on the COP of the TEC140 than if the TEC were closer to or adjacent to the high power ASIC 105. Furthermore, offloading the cooling portion of the low power HBM110 to the TEC140 allows the cold plate 135 to have a higher thermal resistance (and higher Tcase) while keeping the low power HBM110 within the thermal specification. Thus, using TEC140 reduces the temperature of low power HBM110 during normal operation with minimal impact on the thermal performance of cold plate 135.

In some embodiments, the cold plate may include a plurality of insulation slots or grooves. Fig. 2 is a schematic diagram of a side view of a second integrated component package 200 according to an example embodiment. The second integrated component package 200 is similar to the first integrated component package except for the cold plate 235. The base surface of the cold plate 235 includes a plurality of insulation slots 270. Each insulation slot 270 is positioned adjacent to one TEC140 of the plurality of TECs 140 integrated into the base surface of the cold plate 235. During normal operation, the insulation slots 270 minimize heat dissipation from the high power ASIC 105.

In some embodiments, the TEC elements may be integrated into the package cover instead of the cold plate. Fig. 3-5 illustrate packaging configurations in which the TEC elements are embedded within a package cover. Integrating the TEC elements into the package cover instead of the cold plate places the TEC elements closer to the low power HBM components, thereby increasing the site-specific cooling provided by the TEC at the localized area of the package cover covering the low power, more temperature sensitive HBM components. Placing the TEC elements closer to the HBM assembly reduces the heat generated by the high power ASIC absorbed by the TEC elements, but increases the heat generated by the HBM absorbed by the TEC elements. In some embodiments, such as the packaging configurations shown in fig. 3 and 4, ultra-thin TEC elements having a thickness of less than about 1mm may be embedded in a cavity within a package cover. In other embodiments, such as the package configuration shown in fig. 5, standard off-the-shelf TEC elements with a thickness of about 2mm to about 4mm may be integrated with the package cover.

Fig. 3 is a schematic diagram of a side view of a third integrated component package 300 according to an example embodiment. Third integrated component package 300 includes a plurality of TECs 340 and cold plate 335. The TECs 340 are integrated into the package cover 330 such that a first side of each TEC340 is embedded within the package cover 330a and a second side of each TEC340 is physically coupled to a base surface of the cold plate 335. TEC340 is powered by routing one or more electrical connections 150 through package cover 330a to an external power source 155 on PCB 120. By using closed loop control, the voltage and current of TEC340 are adjusted to maintain the maximum junction temperature (Tj) of low power HBM110 at a target value.

Fig. 4 is a schematic diagram of a side view of a fourth integrated component package 400 according to an example embodiment. The fourth integrated component package 400 is similar to the third integrated component package 300 except for the package cover 430. The fourth integrated component package 400 includes a plurality of TECs 440, the plurality of TECs 440 integrated into the package cover 430 such that a first side of each TEC440 is embedded within the package cover 430 and a second side of each TEC440 is physically thermally coupled to the low power HBM 110. The TEC440 is powered by routing one or more electrical connections 150 through the package cover 430 to an external power source 155 on the PCB 120. By using closed loop control, the voltage and current of the TEC440 are adjusted to maintain the maximum junction temperature (Tj) of the low power HBM110 at a target value.

Fig. 5 is a schematic diagram of a side view of a fifth integrated component package 500 according to an example embodiment. The fifth integrated component package 500 is similar to the fourth integrated component package 400 except for the package lid 530. The TECs 540 are integrated into the package cover 530 such that a first side of each TEC 540 is coupled to the base surface of the cold plate 135 and a second side of each TEC 540 is physically coupled to the low power HBM 110. TEC 540 is powered by routing one or more electrical connections 150 through package cover 530 to external power source 155 on PCB 120. By using closed loop control, the voltage and current of TEC 540 are adjusted to maintain the maximum junction temperature (Tj) of low power HBM110 at a target value.

In some embodiments, each of the TECs is independently powered. In some embodiments, the TEC may be sized and positioned to form an array. Redundancy of TECs in the array minimizes the negative effects of individual TEC failures during normal operation. In some embodiments, first and second TIMs 145a and 145b may comprise thermally conductive grease, thermally conductive glue, thermal gap fill, thermally conductive pads, or thermally conductive adhesive.

Fig. 6 is a flow diagram of a method 600, which method 600, when executed, may result in the package shown in fig. 1-5. The method 600 comprises: a plurality of low power components and high power components are coupled to a surface of a package substrate such that the low power components are located adjacent to the high power components (stage 605). Each of the plurality of low power components and the high power component generates heat during normal operation, and the high power component generates more heat during normal operation relative to each of the low power components. The method 600 further comprises: a package lid is coupled to the package substrate such that the package lid covers the plurality of low power components and the high power components (stage 610). The method 600 further comprises: a cold plate is physically and thermally coupled to the package cover, the cold plate comprising a base surface and a top surface, wherein the top surface is opposite the base surface relative to the package cover (stage 615). The method 600 further comprises: the plurality of thermoelectric cooling (TEC) elements are sized and positioned within the integrated component package such that at least a substantial portion of a footprint of the respective TEC elements protruding in a direction perpendicular to a surface of a substrate to which the low and high power components are coupled overlaps at least one of the low power components and substantially no portion of the footprint of the TEC elements protruding in a direction perpendicular to the surface of the substrate to which the low and high power components are coupled substantially overlaps the high power component (stage 620).

The example embodiment of the method 600, when executed, results in the integrated component package shown in fig. 1-5. As mentioned above, the method 600 includes: a plurality of low power components (e.g., HBMs 110) and high power components (e.g., ASICs 105) are coupled to a surface of the package substrate 115, wherein the low power HBM110 is located adjacent to the high power ASIC105 and each of the plurality of low power HBMs 110 and high power ASICs 105 generate heat during normal operation and the high power ASIC105 generates more heat relative to each of the low power HBMs 110 during normal operation (stage 605). The method 600 further comprises: the package lid 130 is coupled to the package substrate 115, wherein the package lid 130 covers the plurality of low power components HBM110 and the high power ASIC105 (stage 610). The method 600 further comprises: cold plate 135 is physically thermally coupled to encapsulation cover 130, cold plate 135 including a base surface and a top surface, wherein the top surface is opposite the base surface relative to encapsulation cover 130 (stage 615). The method 600 further comprises: the plurality of TECs 140 are sized and positioned within the integrated component package such that at least a majority of the footprint of the respective TEC140 protruding in a direction perpendicular to the surface of the substrate 115 to which the low power HBM110 and the high power ASIC105 are coupled overlaps at least one low power HBM110 and substantially no portion of the footprint of the TEC140 protruding in a direction perpendicular to the surface of the substrate 115 to which the low power HBM110 and the high power ASIC105 are coupled substantially overlaps the high power ASIC105 (stage 620). In some embodiments, stage 620 of method 600 may comprise: the TECs 140 are integrated into the cold plate 135 such that a first side of each TEC140 is embedded in a base surface of the cold plate 135 and a second side of each TEC140 is physically coupled to the package cover 130. As shown in the second integrated component package configuration 200 in fig. 2, in some embodiments, stage 620 of method 600 may comprise: the TEC140 is integrated into the base surface of the cold plate 235 that includes a plurality of insulation slots 270. Each insulation slot 270 is positioned adjacent to one TEC140 of the plurality of TECs 140 integrated into the base surface of the cold plate 235. As shown in the third integrated component package configuration 300 in fig. 3, in some embodiments, stage 620 of method 600 may comprise: the plurality of TECs 340 are integrated into the package cover 330 such that a first side of each TEC340 is embedded in the package cover 330 and a second side of each TEC340 is physically coupled to the base surface of the cold plate 335. In some embodiments, such as the fourth integrated component package configuration 400 shown in fig. 4, stage 620 of method 600 may comprise: the plurality of TECs 440 are integrated into the package cover 430 such that a first side of each TEC440 is embedded in the package cover 430 and a second side of each TEC440 is physically coupled to the low power HBM 110. In some implementations, such as the fifth integrated component package configuration 500 shown in fig. 5, stage 620 of method 600 may include: the plurality of TECs 540 are integrated into the package cover 530 such that a first side of each TEC 540 is physically coupled to the base surface of the cold plate 135 and a second side of each TEC 540 is physically coupled to the low power HBM 110.

Fig. 7 is a flow chart of a method 700 of controlling temperature in the integrated component package shown in fig. 1-5 during normal operation when executed. As mentioned above, the integrated component packages shown in fig. 1-5 include a package lid covering a plurality of low power components located adjacent to high power components, wherein the high power components generate higher heat relative to each of the low power components during normal operation. The method 700 comprises: specific location cooling of the package lid is provided at a localized area of higher thermal sensitivity, where the localized area of higher thermal sensitivity is adjacent to low power components and the localized area of lower thermal sensitivity is adjacent to high temperature components (stage 705). The method 700 further comprises: cold plate cooling of some or all of the package cover is provided (stage 710).

Although the primary example of a low power, more thermally sensitive package component discussed herein is an HBM component, other components having similar thermal properties and limitations (such as lower maximum junction and high internal thermal resistance) may be included within the integrated package configurations shown in fig. 1-5 (and discussed in fig. 6 and 7) for active cooling by TEC elements instead of or in addition to the HBM component.

While this specification contains many specifics, these should not be construed as limitations on the scope of any invention or of what may be claimed, but rather as descriptions of features specific to particular embodiments of particular inventions. Certain features that are described in this specification in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination. Furthermore, although features may be described above as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination, and the claimed combination may be directed to a subcombination or variation of a subcombination.

Also, while operations are shown in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order described or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In some cases, multitasking and parallel processing may be advantageous. Moreover, the separation of various system components in the implementations described above should not be understood as requiring such separation in all implementations, and it should be understood that the described program components and systems can generally be integrated together in a single software product or packaged into multiple software products.

References to "or" may be interpreted as being inclusive such that any term described by use of "or" may refer to any single described term, more than one described term, or all described terms. The labels "first", "second", "third", etc. are not necessarily intended to indicate a sequence, but are generally only used to distinguish the same or similar items or elements.

Various modifications to the embodiments described in this disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the claims are not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the present disclosure, the principles and novel features disclosed herein.