This paper introduces a new dc technique for the extraction of the thermal resistance of LDMOS transistors. The new extraction method has distinctive advantages over existing techniques: 1) it is based on dc measurements of the I–V output curves at different ambient temperatures, thus requiring only very standard and inexpensive equipment, with the exception of a stable and accurate temperature control; 2) it does not need any special layout or test structure, nor any knowledge of the physical structure of the device under test; and 3) it can be applied to both packaged and on-wafer FETs. We applied the new technique to LDMOS transistors with a wide range of gate widths, namely, 2.68–84.42 mm, obtaining well-behaved and consistent results. A comparison of the new method with a standard extraction technique based on short-pulsemeasurements at different ambient temperatures showed substantial agreement between the two.
A new technique to measure the thermal resistance of LDMOS transistors / Menozzi, Roberto; Kingswood, A. C.. - In: IEEE TRANSACTIONS ON DEVICE AND MATERIALS RELIABILITY. - ISSN 1530-4388. - 5:(2005), pp. 515-521.
A new technique to measure the thermal resistance of LDMOS transistors
MENOZZI, Roberto;
2005-01-01
Abstract
This paper introduces a new dc technique for the extraction of the thermal resistance of LDMOS transistors. The new extraction method has distinctive advantages over existing techniques: 1) it is based on dc measurements of the I–V output curves at different ambient temperatures, thus requiring only very standard and inexpensive equipment, with the exception of a stable and accurate temperature control; 2) it does not need any special layout or test structure, nor any knowledge of the physical structure of the device under test; and 3) it can be applied to both packaged and on-wafer FETs. We applied the new technique to LDMOS transistors with a wide range of gate widths, namely, 2.68–84.42 mm, obtaining well-behaved and consistent results. A comparison of the new method with a standard extraction technique based on short-pulsemeasurements at different ambient temperatures showed substantial agreement between the two.File | Dimensione | Formato | |
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