18169568. SYSTEM AND METHOD FOR A LOW VOLTAGE SUPPLY BANDGAP simplified abstract (TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.)
Contents
SYSTEM AND METHOD FOR A LOW VOLTAGE SUPPLY BANDGAP
Organization Name
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
Inventor(s)
Shao-Yu Chou of Chu Pei City (TW)
SYSTEM AND METHOD FOR A LOW VOLTAGE SUPPLY BANDGAP - A simplified explanation of the abstract
This abstract first appeared for US patent application 18169568 titled 'SYSTEM AND METHOD FOR A LOW VOLTAGE SUPPLY BANDGAP
Simplified Explanation
The bandgap reference circuit described in the abstract is a circuit that generates a stable voltage reference regardless of temperature variations. Here are some key points to explain the patent/innovation:
- The circuit includes a first current mirror and a first resistor to generate a Proportional to Absolute Temperature (PTAT) voltage.
- It also includes a second current mirror and a Bipolar Junction Transistor (BJT) device to generate a Complementary to the Absolute Temperature (CTAT) voltage.
- The output node of the circuit provides a bandgap voltage that is a weighted sum of the PTAT and CTAT voltages.
- Two resistors are included in the circuit to help in generating the bandgap voltage.
Potential Applications: The bandgap reference circuit can be used in various electronic devices that require a stable voltage reference, such as sensors, data converters, and power management circuits.
Problems Solved: This technology solves the problem of voltage variations due to temperature changes, ensuring accurate and stable voltage references in electronic circuits.
Benefits: The bandgap reference circuit provides a reliable and stable voltage reference, improving the overall performance and accuracy of electronic devices.
Potential Commercial Applications of this Technology: This technology can be applied in industries such as automotive, telecommunications, and consumer electronics for improving the accuracy and reliability of electronic systems.
Possible Prior Art: Prior art in bandgap reference circuits includes various designs and implementations aimed at providing stable voltage references in electronic circuits. Some common techniques include using temperature-compensated components and feedback loops to minimize voltage variations.
Unanswered Questions: 1. How does the bandgap reference circuit handle variations in power supply voltage? 2. Are there any limitations to the temperature range within which the circuit can operate effectively?
Original Abstract Submitted
In some aspects of the present disclosure, a bandgap reference circuit includes a first current mirror and a first resistor coupled to the first current mirror to provide a proportional to absolute temperature (PTAT) voltage. The circuit includes a second current mirror and a bipolar junction transistor (BJT) device coupled to the second current mirror to provide a complementary to the absolute temperature (CTAT) voltage. The circuit includes an output node to provide a bandgap voltage that is a weighted sum of the PTAT voltage and the CTAT voltage. The circuit includes a second resistor coupled between the output node and a first node, wherein the first node is coupled between the first resistor and the first current mirror. The circuit includes a third resistor coupled between the output node and a second node, wherein the second node is coupled between the BJT device and the second current mirror.
