Smart controller with phantom inductor current sensing for switched mode power supplies
Abstract
Voltage on the output terminal of an inductor is obtained as a first input signal to a control block (CB); the inductor has an input terminal connected to a power switch and driver block at a switching node. A sense input voltage is obtained on an output terminal of a sensing circuit that is not directly connected to the switching node, as a second input signal to the CB. A voltage is generated on a first output terminal of the CB and is selected such that the CB can use its first and second input signals to infer the current through the inductor. A pulse width modulation (PWM) signal is generated on a second output terminal of the CB, based on the inferred current through the inductor; the second output signal from the CB is provided to a PWM input terminal of the power switch and driver block.
- Inventors:
- Issue Date:
- Research Org.:
- International Business Machines Corp., Armonk, NY (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1859975
- Patent Number(s):
- 11150712
- Application Number:
- 16/399,981
- Assignee:
- International Business Machines Corporation (Armonk, NY)
- Patent Classifications (CPCs):
-
G - PHYSICS G06 - COMPUTING G06F - ELECTRIC DIGITAL DATA PROCESSING
H - ELECTRICITY H02 - GENERATION H02M - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS
- DOE Contract Number:
- B621073
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 04/30/2019
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Zhang, Xin, Takken, Todd E., Ferencz, Andrew, Chang, Leland, and Coteus, Paul W. Smart controller with phantom inductor current sensing for switched mode power supplies. United States: N. p., 2021.
Web.
Zhang, Xin, Takken, Todd E., Ferencz, Andrew, Chang, Leland, & Coteus, Paul W. Smart controller with phantom inductor current sensing for switched mode power supplies. United States.
Zhang, Xin, Takken, Todd E., Ferencz, Andrew, Chang, Leland, and Coteus, Paul W. Tue .
"Smart controller with phantom inductor current sensing for switched mode power supplies". United States. https://www.osti.gov/servlets/purl/1859975.
@article{osti_1859975,
title = {Smart controller with phantom inductor current sensing for switched mode power supplies},
author = {Zhang, Xin and Takken, Todd E. and Ferencz, Andrew and Chang, Leland and Coteus, Paul W.},
abstractNote = {Voltage on the output terminal of an inductor is obtained as a first input signal to a control block (CB); the inductor has an input terminal connected to a power switch and driver block at a switching node. A sense input voltage is obtained on an output terminal of a sensing circuit that is not directly connected to the switching node, as a second input signal to the CB. A voltage is generated on a first output terminal of the CB and is selected such that the CB can use its first and second input signals to infer the current through the inductor. A pulse width modulation (PWM) signal is generated on a second output terminal of the CB, based on the inferred current through the inductor; the second output signal from the CB is provided to a PWM input terminal of the power switch and driver block.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2021},
month = {10}
}
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