Thermal head for independent control of zones
Disclosed herein are thermal heads and corresponding test systems for independently controlling a one or more components while testing one or more devices under test. In some embodiments, a thermal head comprises a plurality of adapters, one or more heaters, and one or more thermal controllers for independently controlling temperatures of the components. The thermal controllers may control the temperatures of at least some of the components independently such that thermal control of one component does not affect the thermal control of the other component. In some embodiments, the thermal control is by way of one or more cold plates, and the thermal head comprises one or more cold plates. Embodiments of the disclosure further include independent control of one or more forces using one or more force mechanisms.
1. A thermal control system for thermally controlling one or more devices under test, comprising:
a thermal head for controlling one or more temperatures of the one or more devices under test, the thermal head comprising:
a plurality of adapters thermally coupled to one or more components of the one or more devices under test, wherein the plurality of adapters comprises a first adapter and a second adapter, and movement of the first adapter is independent from movement of the second adapter; and
a controller configured to independently control one or more properties of the plurality of adapters.
2. The thermal control system of claim 1 , wherein the one or more properties comprise temperature or force.
3. The thermal control system of claim 1 , wherein the plurality of adapters comprises a first adapter having a first height and a second adapter having a second height.
4. The thermal control system of claim 1 , wherein the plurality of adapters comprises a first adapter having a first thermal mass and a second adapter having a second thermal mass.
5. The thermal control system of claim 1 , wherein the plurality of adapters comprises a first adapter having a first surface area thermally coupled to corresponding one or more components and a second adapter having a second surface area thermally coupled to corresponding one or more components.
6. The thermal control system of claim 1 , wherein at least two of the plurality of adapters are configured to thermally couple to the one or more components on the same side of a substrate of the one or more devices under test.
7. The thermal control system of claim 1 , wherein at least two of the plurality of adapters are configured to thermally couple to the one or more components on different sides of a substrate of the one or more devices under test.
8. The thermal control system of claim 1 , wherein the plurality of adapters comprises a first adapter nested within a second adapter.
9. The thermal control system of claim 8 , wherein the plurality of adapters comprises a first adapter and a second adapter, wherein the thermal head further comprises:
a first heater thermally coupled to the first adapter and a second heater thermally coupled to the second adapter, wherein the first heater is nested within the second heater.
10. The thermal control system of claim 8 , wherein the plurality of adapters comprises a first adapter and a second adapter, wherein the thermal head further comprises:
a first thermal interface material layer thermally coupled to the first adapter and a second thermal interface material layer thermally coupled to the second adapter, wherein the first thermal interface material layer is nested within the second thermal interface material layer.
11. The thermal control system of claim 8 , wherein the first adapter is thermally coupled to a first component and the second adapter is thermally coupled to a second component, and wherein movement of the second component is not independent from movement of the first component.
12. The thermal control system of claim 1 , wherein the one or more components comprise stacked components.
13. The thermal control system of claim 12 , wherein the first adapter is thermally coupled to a first component of the stacked components and the second adapter is thermally coupled to a second component of the stacked components, wherein a height of the first adapter is less than a height of the second adapter.
14. The thermal control system of claim 12 , wherein the first adapter is thermally coupled to a first component of the stacked components and the second adapter is thermally coupled to a second component of the stacked components, wherein a force applied by the first adapter is less than a force applied by the second adapter.
15. The thermal control system of claim 1 , wherein the thermal head further comprises:
one or more heaters thermally coupled to at least one of the one or more components, wherein the one or more heaters are configured to heat the at least one component.
16. The thermal control system of claim 15 , wherein the one or more heaters comprise a first heater coupled to a first adapter and a second heater coupled to a second adapter, wherein movement of the first heater is independent from movement of the second heater.
17. The thermal control system of claim 15 , wherein at least one of the one or more heaters contacts at least one of the plurality of adapters.
18. The thermal control system of claim 15 , wherein the one or more heaters are independently controlled.
19. The thermal control system of claim 1 , wherein the thermal head further comprises:
one or more cold plates thermally coupled to at least one of the plurality of adapters, wherein the one or more cold plates are configured to cool the at least one adapter.
20. The thermal control system of claim 19 , wherein the one or more cold plates comprise a first cold plate coupled to a first adapter and a second cold plate coupled to a second adapter, wherein movement of the first cold plate is independent from movement of the second cold plate.
21. The thermal control system of claim 19 , wherein at least one of the one or more cold plates contacts at least one of the plurality of adapters.
22. The thermal control system of claim 21 , wherein the one or more cold plates are independently controlled.
23. The thermal control system of claim 1 , wherein the thermal head further comprises:
one or more force mechanisms configured to apply one or more forces to at least one of the one or more components.
24. The thermal control system of claim 23 , wherein the one or more force mechanisms are independently controlled.
25. The thermal control system of claim 1 , wherein at least two of the one or more components have different set point temperatures.
26. The thermal control system of claim 1 , wherein at least two of the one or more components have different amounts of power dissipation.
27. The thermal control system of claim 1 , wherein at least two of the one or more components are tested with different applied forces.
28. The thermal control system of claim 1 , wherein at least two of the one or more components have different heights.
29. The thermal control system of claim 1 , wherein at least one of the plurality of adapters is thermally coupled to at least two of the one or more components.
30. The thermal control system of claim 1 , wherein the one or more components are part of a single device under test.