| US 7,538,502 B2 | ||
| Motor driver circuit, control method thereof, and electronic apparatus | ||
| Masayuki Hongo, Yokohama (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Sep. 04, 2008, as Appl. No. 12/204,270. | ||
| Application 12/204270 is a continuation of application No. 11/141017, filed on Jun. 01, 2005, granted, now 7,429,836. | ||
| Claims priority of application No. 2004-166141 (JP), filed on Jun. 03, 2004. | ||
| Prior Publication US 2009/0009108 A1, Jan. 08, 2009 | ||
| Int. Cl. H02P 7/08 (2006.01) | ||
| U.S. Cl. 318—66 [318/800; 318/782; 318/400.21; 318/700] | 11 Claims |
| 1. A power supply circuit comprising:
a plurality of DC/DC converters for respectively generating different voltages;
a detection circuit for detecting an output failure in each of the plurality of DC/DC converters;
a stopping circuit for stopping a DC/DC converter in which the output failure was detected by the detection circuit;
a signal output circuit for outputting a first signal if a specific DC/DC converter of the plurality of DC/DC converters is
stopped by the stopping circuit;
recovery means for recovering the specific DC/DC converter when a second signal is inputted after outputting the first signal;
and
a reset circuit for, if the stopping circuit stops at least one of the plurality of DC/DC converters other than the specific
DC/DC converter, stopping the rest of the plurality of DC/DC converters.
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