Current sense apparatus and method using a combination of a...

Details Current sense apparatus and method using a combination of a... Current sense apparatus and method using a combination of a...

2005-08-16

2005-08-16

Sterrett, Jeffrey (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

C323S224000, C323S271000

Reexamination Certificate

active

06930474

ABSTRACT:
In a switching mode DC-to-DC power converter including a high-side transistor connected between an input voltage and an output node, a low-side transistor connected between the output node and a reference potential, and an inductor connected to the output node to derive an output voltage and an output current, a current sense apparatus and method employs a ramp signal generator to generate a ramp signal with a slope proportional to the difference between the input and output voltages, a DC signal generator to generate a DC signal proportional to the DC component of the current through the low-side transistor, and a summing circuit for combining the ramp and DC signals.

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