Thermal characterization of a radial micro-channel cooling plate

Author

Bognár, Gy ; Horvoth, G. ; Kohari, Zs ; Pang, A.J. ; Desmulliez, M.P.Y. ; Poppe, A. ; Rencz, M. ; Szkely, V.

Author_Institution

Dept. of Electron Devices, Budapest Univ. of Technol. & Econ., Hungary

fYear

2005

fDate

15-17 March 2005

Firstpage

135

Lastpage

140

Abstract

The thermal behavior of a square nickel plate micro-cooler holding 128 micro-channels in radial arrangement has been investigated. The device is to be used in microelectronic packaging cooling applications. In our study it was attached to a power transistor which was used as a dissipator and a temperature sensor. The thermal transient response to a dissipation step of the transistor was recorded in the measurement. The measured transients (cooling curves) were transformed into structure functions from which the partial thermal resistance corresponding to the cooling assembly was identified. The measurement and the partial thermal resistance identification was carried out at different flow-rates of nitrogen gas forced through the micro-channels. This way thermal resistance versus flow-rate and heat-transfer coefficient versus flowrate characteristics of the investigated micro-channel cooler were derived.

Keywords

cooling; nickel; power transistors; thermal management (packaging); thermal resistance; cooling curves; dissipator; flowrate characteristics; heat-transfer coefficient; microelectronic packaging cooling; nitrogen gas; partial thermal resistance; power transistor; radial micro-channel cooling plate; square nickel plate micro-cooler; structure functions; temperature sensor; thermal characterization; thermal transient response; Assembly; Cooling; Electrical resistance measurement; Microelectronics; Nickel; Packaging; Power transistors; Temperature sensors; Thermal resistance; Transient response;

fLanguage

English

Publisher

ieee

Conference_Titel

Semiconductor Thermal Measurement and Management Symposium, 2005 IEEE Twenty First Annual IEEE

ISSN

1065-2221

Print_ISBN

0-7803-8985-9

Type

conf

DOI

10.1109/STHERM.2005.1412169

Filename

1412169