Invention Grant
- Patent Title: Low-temperature drift ultra-low-power linear regulator
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Application No.: US16966476Application Date: 2020-04-30
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Publication No.: US11175686B2Publication Date: 2021-11-16
- Inventor: Chao Chen , Jun Yang , Xinning Liu
- Applicant: SOUTHEAST UNIVERSITY
- Applicant Address: CN Nanjing
- Assignee: SOUTHEAST UNIVERSITY
- Current Assignee: SOUTHEAST UNIVERSITY
- Current Assignee Address: CN Nanjing
- Agency: Bayramoglu Law Offices LLC
- Priority: CN201910414672.X 20190517
- International Application: PCT/CN2020/087983 WO 20200430
- International Announcement: WO2020/233382 WO 20201126
- Main IPC: G05F1/567
- IPC: G05F1/567 ; G05F1/575 ; G05F1/59

Abstract:
A low-temperature drift ultra-low-power linear regulator includes eight PMOS transistors, two resistors, two capacitors and three NMOS transistors. The eight PMOS transistors include PMOS transistor PM1 to PMOS transistor PM8. The two resistors include resistor R1 and resistor R2. The two capacitors include capacitor C1 and capacitor C2. The three NMOS transistors include NMOS transistor NM1, NMOS transistor NM2 and NMOS transistor NM3. From right to left, the linear regulator includes a PTAT voltage core starting circuit, a PTAT voltage core circuit, a negative temperature characteristic generating circuit and a driver stage closed-loop control circuit. PM5-PM8 form a feedback circuit. The feedback circuit clamps the current flowing through PM6 to be proportional to PM2 to obtain a temperature-stable output voltage, and can dynamically adjust the gate voltage of PM5 according to the change of load current to output different currents according to the load demand.
Public/Granted literature
- US20210311514A1 LOW-TEMPERATURE DRIFT ULTRA-LOW-POWER LINEAR REGULATOR Public/Granted day:2021-10-07
Information query
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