Thermal clutch for thermal control unit and methods related thereto
View Patent ↗Featured are devices, systems and methods for testing an electronic device, such as an integrated chip. Such a testing method includes disposing a thermal clutch between a variable heat sink that absorbs heat energy and a heat source member that selectively delivers heat energy. When the thermal clutch is operated in a first manner the thermal clutch thermally couples the variable heat sink to the electronic device under test (DUT) and when operated in the second manner, the thermal clutch thermally de-couples the variable heat sink from the DUT. Also, when the thermal clutch is operated in the second manner, the heat source member is thermally coupled to the DUT and is operated so as to produce heat energy which is thus provided to the thermally coupled DUT.
1. A method for testing a device under test (DUT) comprising the steps of:
disposing a thermal clutch adjacent to a variable heat sink that absorbs heat energy and a heat source member that selectively delivers heat energy; and
selectively operating the thermal clutch in one of a first manner or a second manner, wherein: when operating the thermal clutch in the first manner the thermal clutch causes the variable heat sink to contact the heat source member; and when operating the thermal clutch in the second manner, the thermal clutch creates a separation between the variable heat sink and the heat source member,
wherein when the thermal clutch is being operated in the second manner, the heat source member is capable of being thermally coupled to the DUT for operation to produce heat energy which is provided to the DUT.
2. The testing method of claim 1 , further comprising operating the variable heat sink while the thermal clutch is being operated in the second manner.
3. The testing method of claim 1 , wherein when the variable heat sink is thermally coupled to the DUT, the thermal clutch thermally couples the variable heat sink to the heat source member and said method includes configuring the heat source member so it does not generate heat energy.
4. The testing method of claim 1 , wherein the variable heat sink comprises a coolant evaporator and said method further includes controlling the coolant evaporator so as to control a temperature of the DUT.
5. The testing method of claim 1 , wherein the thermal clutch comprises:
a first mechanism that is configured to move the variable heat sink in a first direction so as to thermally couple the variable heat sink and the DUT; and
a second mechanism arranged in between the variable heat sink and the thermal plate that is configured to move the variable heat sink in a second direction so as to thermally de-couple the variable heat sink from the DUT.
6. The testing method of claim 1 , wherein the thermal clutch comprises a first mechanism that is configured and arranged to move the variable heat sink in a first direction so as to thermally couple the variable heat sink and the heat source member; and
a second mechanism arranged in between the variable heat sink and the thermal plate that is configured and arranged to move the variable heat sink in a second direction so as to thermally de-couple the variable heat sink from the heat source member.
7. The testing method of claim 1 further comprising the step of applying a force, by a piston, to the heat source member so as to place the DUT into electrical contact with a device testing apparatus comprising: the heat source member; the variable heat sink; and the thermal clutch, wherein the force being applied is independent of operation of the thermal clutch.
8. The testing method of claim 1 , further comprising thermally coupling an adapter member between the heat source member and the DUT.
9. The testing method of claim 1 , wherein the DUT is an integrated chip.