A current sensing circuit using current-voltage conversion for PMOS-based LDO regulators
In this paper, a standalone output current sensing module for CMOS low dropout linear voltage (LDO) regulator with PMOS as pass device is proposed. The main purpose of current sensing is to create an over-current protection or to limit the output current value in certain applications. Based on I-V c...
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| Published in | 2012 IEEE Symposium on Computer Applications and Industrial Electronics pp. 1 - 4 |
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| Main Authors | , , , |
| Format | Conference Proceeding |
| Language | English |
| Published |
IEEE
01.12.2012
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| Subjects | |
| Online Access | Get full text |
| ISBN | 1467330329 9781467330329 |
| DOI | 10.1109/ISCAIE.2012.6482056 |
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| Abstract | In this paper, a standalone output current sensing module for CMOS low dropout linear voltage (LDO) regulator with PMOS as pass device is proposed. The main purpose of current sensing is to create an over-current protection or to limit the output current value in certain applications. Based on I-V conversion in which the supply voltage varies from 2.7 V-4.2 V, the current clamp value varies from 178 mA to 270 mA in the case of 200 mA load limiting. The proposal has been successfully fabricated using a CMOS technology, and verified through the correct operation of a power management prototype chip. |
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| AbstractList | In this paper, a standalone output current sensing module for CMOS low dropout linear voltage (LDO) regulator with PMOS as pass device is proposed. The main purpose of current sensing is to create an over-current protection or to limit the output current value in certain applications. Based on I-V conversion in which the supply voltage varies from 2.7 V-4.2 V, the current clamp value varies from 178 mA to 270 mA in the case of 200 mA load limiting. The proposal has been successfully fabricated using a CMOS technology, and verified through the correct operation of a power management prototype chip. |
| Author | Ho Quang Tay Vo Tuan Nam Nguyen Hoang Duc Bui Ngoc Chau |
| Author_xml | – sequence: 1 surname: Ho Quang Tay fullname: Ho Quang Tay email: tay.hoquang@icdrec.edu.vn organization: IC Design Res. & Educ. Center (ICDREC), Vietnam Nat. Univ.-Hochiminh City, Ho Chi Minh City, Vietnam – sequence: 2 surname: Vo Tuan Nam fullname: Vo Tuan Nam organization: IC Design Res. & Educ. Center (ICDREC), Vietnam Nat. Univ.-Hochiminh City, Ho Chi Minh City, Vietnam – sequence: 3 surname: Nguyen Hoang Duc fullname: Nguyen Hoang Duc organization: IC Design Res. & Educ. Center (ICDREC), Vietnam Nat. Univ.-Hochiminh City, Ho Chi Minh City, Vietnam – sequence: 4 surname: Bui Ngoc Chau fullname: Bui Ngoc Chau organization: IC Design Res. & Educ. Center (ICDREC), Vietnam Nat. Univ.-Hochiminh City, Ho Chi Minh City, Vietnam |
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| Snippet | In this paper, a standalone output current sensing module for CMOS low dropout linear voltage (LDO) regulator with PMOS as pass device is proposed. The main... |
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| SubjectTerms | Clamps current limiter current sensing current-voltage conversion LDO over-current protection Regulators Sensors Threshold current Threshold voltage Transistors Voltage control |
| Title | A current sensing circuit using current-voltage conversion for PMOS-based LDO regulators |
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