COMBINATION CURRENT GENERATOR CONFIGURED TO SELECTIVELY GENERATE ONE OF A PTAT AND A CTAT CURRENT

• Main Authors: SOENEN ERIC, ROTH ALAN, HSU YING CHIH
• Format: Patent
• Language: English; Korean
• Published: 21.09.2016
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONTROLLING; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; MEASURING; MEASURING QUANTITY OF HEAT; MEASURING TEMPERATURE; PHYSICS; REGULATING; SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES; TESTING; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR

One embodiment of the present disclosure provides a compact lower power thermal sensor comprising: a combination current generator configured to selectively generate a PTAT and a CTAT current; a convertor configured to generate digital output corresponding to a current mirrored by a current-reuse charge pump; and the current-reuse charge pump coupled between the combination current generator and the convertor, and configured to mirror the current generated by the combination current generator and selectively establish a charging/discharging path to/from the convertor. The combination current generator selectively generates the PTAT and the CTAT current in accordance with an output state of the convertor, and the current-reuse charge pump selectively charges and discharges a capacitor of the convertor with the PTAT and the CTAT current in accordance with the output state of the convertor. 본 개시 내용의 일 실시예는, PTAT 전류 및 CTAT 전류를 선택적으로 생성하도록 구성된 결합 전류 생성기; 전류 재사용 차지 펌프에 의해 미러링된 전류에 대응하는 디지털 출력을 생성하도록 구성된 컨버터; 및 결합 전류 생성기 및 컨버터 사이에 결합되고, 결합 전류 생성기에 의해 생성된 전류를 미러링하고 컨버터로/컨버터로부터 충전/방전 경로를 선택적으로 설정하도록 구성된 전류 재사용 차지 펌프를 포함하는 컴팩트한 저전력 열 센서를 제공한다. 결합 전류 생성기는 컨버터의 출력 상태에 따라 PTAT 전류 및 CTAT 전류를 선택적으로 생성하고, 전류 재사용 차지 펌프는 컨버터의 출력 상태에 따라 PTAT 전류 및 CTAT 전류로 컨버터의 커패시터를 선택적으로 충전 및 방전한다.