Thermally compensated current sensing of intrinsic power...

Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...

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C323S275000

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RE042307

ABSTRACT:
A DC-to-DC converter includes one or more power switches, a pulse width modulation circuit for generating control pulses for the power switches, and an output inductor connected to the power switches. A thermally compensated current sensor is connected to an intrinsic current sensing element exhibiting a temperature-based parameter non-linearity. The thermally compensated current sensor has a temperature coefficient that substantially matches a temperature coefficient of an intrinsic power converter element used to measure current flow, thus linearizing the current measurement. Also, a current feedback loop circuit cooperates with the pulse width modulation circuit to control the power switches responsive to the thermally compensated current sensor.

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European Patent Office, “Office Action”, Mar. 26, 2009, Published in: EP.
Patent Abstracts of Japan, published on Nov. 4, 1994 under Publication No. 06309045 entitled “Direct-Current Stabilizing Power Source”, Applicant: Nec Tohoku Ltd.; Inventor: Matsuda Hideshi.

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