Semiconductor Components Industries, LLC

Infineon Technologies Ag

Infineon Technologies Austria Ag

Alexandra-Oana Petroianu

Radu H Iacob

Pavel Londak

Niranjan Reddy Suravarapu

Florin-Silviu Dumitru

Catalin Ionut Petroianu

Adrian Popa

Valentin Neagu

Gabriel Codrin Aungurencei

A protection device includes a first protection stage comprising a first p-type transistor comprising a first terminal, a second terminal, and a first gate terminal. A first voltage regulating device is connected between the first terminal and the second terminal. A second voltage regulating device is connected between the first terminal and the first gate terminal. A third voltage regulating device is connected to the first gate terminal. A first current source is connected to the first gate terminal.

Protection device

An internal power supply for an amplifier is disclosed. The internal power supply floats according to a common mode voltage at the input to the amplifier and according to an input voltage at an input stage of the amplifier. Powering the input stage of the amplifier using the floating supply allows for the use of low voltage devices even when the range of possible common mode voltages includes high voltages. The use of low voltage devices can correspond to performance improvement for the amplifier and can help reduce the size of the amplifier. The internal supply can accommodate both positive and negative common mode voltages and can be used for current sense amplifiers of any gain.

Internal power supply for amplifiers

Implementations of voltage sensing systems may include: a high side current mirror coupled to a reference current source coupled to at least one diode. The at least one diode may be coupled to a resistor and to a comparator. The resistor may be coupled to the ground. The comparator may be coupled with a reference voltage. The comparator may be configured to receive a comparison voltage from the diode and output whether the comparison voltage is higher or lower than the reference voltage.

Voltage threshold sensing systems and related methods

Some embodiments relate to an integrated circuit (IC). The IC determines a time-variant resistance of an sensing resistor, wherein a resistance of the sensing resistor reflects an ambient environmental condition. The IC includes first and second conditioning circuits, an analog to digital conversion (ADC) element, and a logic circuit. The first conditioning circuit provides a first voltage based on the resistance of the sensing resistor, while the second conditioning circuit provides a second voltage based on a resistance of an on-chip reference resistor. The ADC element provides a multi-bit digital value based on a ratio of the first and second voltages. The multi-bit digital value is indicative of the ambient environmental condition measured by the off-chip sensor. A logic circuit selectively adjusts the first and second voltages based on the multi-bit digital value to limit or avoid saturation of the ADC element. Other embodiments are also disclosed.

Techniques for determining a resistance value

A circuit includes a first current path comprising a first floating-gate transistor having a programmable threshold voltage, a second current path, and a differential amplifier. The second current path includes a second floating-gate transistor having a programmable threshold voltage and a resistor. The differential amplifier includes a first input coupled to the first current path, a second input coupled to the second current path, and an output configured to control a reference current path.

Current-mode programmable reference circuits and methods therefor

In one exemplary embodiment, a control circuit includes a comparator circuit that compares a solar cell voltage and a battery voltage and responsively activates a charging control signal if the solar cell voltage is greater than the battery voltage. If the solar cell voltage is not greater than the battery voltage, the comparator circuit deactivates the charging control signal.

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Bucharest, Romania

Alexandra-Oana Petroianu