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US 10,539,600 B2Granted
Semiconductor device and AC resistance measuring system including the same
AssigneeRenesas Electronics Corporation
InventorsMasato Hirai, Siewling Lim
Life of this patent
Estimating the term…
Abstract
Provided is a semiconductor device including: an AC voltage generation unit that generates an AC voltage having an amplitude according to a control signal; a resistance element provided in series with a measurement target, the AC voltage being applied to the resistance element; a voltage detecting unit that detects that a difference voltage between two ends of the resistance element has reached a specified voltage; and a control unit that outputs the control signal to the AC voltage generation unit to cause the AC voltage generation unit to generate the AC voltage so that the difference voltage reaches the specified voltage, based on a detection result of the voltage detecting unit.
Claims17
An AC resistance measuring system comprising:
- a semiconductor device comprising:
- an AC (Alternating Current) voltage generation unit that generates an AC voltage having an amplitude according to a control signal;
- a resistance element provided in series with a measurement target, the AC voltage being applied to the resistance element;
- a voltage detecting unit that detects that a difference voltage between two ends of the resistance element has reached a specified voltage;
- and
- a control unit that outputs the control signal to the AC voltage generation unit to cause the AC voltage generation unit to generate the AC voltage so that the difference voltage reaches the specified voltage, based on a detection result of the voltage detecting unit;
- and
- an arithmetic processing unit that calculates a resistance value of the measurement target,
- wherein the voltage detecting unit includes a comparator that compares the specified voltage with the difference voltage between the two ends of the resistance element, and
- wherein the resistance value of the measurement target is calculated by measuring the AC voltage obtained from information of a set value N of the AC voltage generation unit, where the set value N represents a magnitude of the amplitude of the AC voltage.
7 more elements
An AC resistance measuring system comprising:
- a semiconductor device comprising:
- an AC (Alternating Current) voltage generation unit that generates an AC voltage having an amplitude according to a control signal;
- a resistance element provided in series with a measurement target, the AC voltage being applied to the resistance element;
- a voltage detecting unit detects whether a difference voltage between two ends of the resistance element has reached a predetermined voltage by comparing the predetermined voltage with the difference voltage between the two ends of the resistance element to provide a detection result;
- and
- a control unit that outputs the control signal to the AC voltage generation unit to cause the AC voltage generation unit to generate the AC voltage so that the difference voltage reaches the predetermined voltage, based on the detection result of the voltage detecting unit;
- and
- an arithmetic processing unit that calculates a resistance value of the measurement target,
- wherein the resistance value of the measurement target is calculated by measuring the AC voltage obtained from information of a set value N of the AC voltage generation unit, where the set value N represents a magnitude of the amplitude of the AC voltage.
6 more elements
A semiconductor device comprising:
- an AC (Alternating Current) voltage generation unit that generates an AC voltage having an amplitude according to a control signal;
- a resistance element provided in series with a measurement target, the AC voltage being applied to the resistance element;
- a voltage detecting unit that detects that a difference voltage between two ends of the resistance element has reached a specified voltage;
- and
- a control unit that outputs the control signal to the AC voltage generation unit to cause the AC voltage generation unit to generate the AC voltage so that the difference voltage reaches the specified voltage, based on a detection result of the voltage detecting unit,
- wherein the voltage detecting unit includes a comparator that compares the specified voltage with the difference voltage between the two ends of the resistance element,
- wherein the AC voltage is applied to one end of a current path that passes through the resistance element and a measurement target, and a reference voltage is actively applied via a source to the other end of the current path, and
- wherein the voltage detecting unit further includes an amplifier circuit that amplifies the difference voltage between the two ends of the resistance element in an analog domain.
5 more elements
Dependencies are inferred from the claim text.