| US 9,812,965 B2 | ||
| Low input voltage boost converter with peak inductor current control and offset compensated zero detection | ||
| Benton Calhoun, Charlottesville, VA (US); and Aatmesh Shrivastava, Charlottesville, VA (US) | ||
| Assigned to University of Virginia Patent Foundation, Charlottesville, VA (US) | ||
| Filed by University of Virginia Patent Foundation, Charlottesville, VA (US) | ||
| Filed on Dec. 17, 2016, as Appl. No. 15/382,639. | ||
| Application 15/382,639 is a division of application No. 15/268,783, filed on Sep. 19, 2016. | ||
| Application 15/268,783 is a division of application No. 15/085,428, filed on Mar. 30, 2016, granted, now 9,490,698. | ||
| Application 15/085,428 is a division of application No. 14/600,425, filed on Jan. 20, 2015, granted, now 9,325,240. | ||
| Claims priority of provisional application 61/928,621, filed on Jan. 17, 2014. | ||
| Prior Publication US 2017/0098999 A1, Apr. 6, 2017 | ||
| Int. Cl. H02M 3/156 (2006.01); H02M 3/158 (2006.01); H02M 1/088 (2006.01); H02M 1/00 (2006.01) | ||
| CPC H02M 3/158 (2013.01) [H02M 1/088 (2013.01); H02M 2001/0025 (2013.01)] | 20 Claims |
| 20. An apparatus, comprising:
an inductor configured to pass through an inductor current;
a boost converter switch operatively coupled to the inductor, configured to receive a control signal to activate a boost converter
to generate the inductor current; and
a switch control circuit operatively coupled to the boost converter switch, the switch control circuit configured to:
receive an input voltage and generate a control signal having an amplitude proportional to the square of a magnitude of the
input voltage and having a pulse duration proportional to an inverse of the magnitude of the input voltage, and
vary an activation time of the boost converter switch based on the input voltage to maintain a peak inductor current of the
inductor substantially constant.
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