Technique for measuring temperature and current via a MOSFET...

Details Technique for measuring temperature and current via a MOSFET... Technique for measuring temperature and current via a MOSFET...

2005-09-20

2005-09-20

Berhane, Adolf (Department: 2838)

Miscellaneous active electrical nonlinear devices, circuits, and

External effect

Temperature

C327S538000

Reexamination Certificate

active

06946897

ABSTRACT:
In order to derive a precise measurement of temperature and current in a synchronous buck DC-DC converter a synchronous conduction cycle measurement of the value of reverse conduction voltage (VON), and an asynchronous conduction cycle measurement of the value of body diode conduction voltage (VDF) of the low side power MOSFET are performed. These two measured values are then used as dual inputs to a two-dimensional to two-dimensional transform function (e.g., look-up table) that is effective to map the measured voltage values into output values for current (I) and temperature (T).

REFERENCES:
patent: 3947706 (1976-03-01), Holmes
patent: 5764032 (1998-06-01), Moore
patent: 6445244 (2002-09-01), Stratakos et al.

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