| 发明名称 |
SWITCHING POWER SUPPLY DEVICE, SWITCHING POWER SUPPLY CONTROL METHOD, AND ELECTRONIC APPARATUS |
| 摘要 |
A switching power supply device includes a switching element to which a DC input is supplied, a frequency control circuit which controls a switching frequency of the switching element, a frequency detection circuit which detects the switching frequency of the switching element, and a duty ratio control circuit which controls a switching duty ratio based on the frequency detected by the frequency detection circuit. The duty ratio control circuit controls the switching duty ratio such that the switching frequency becomes an approximately maximum frequency. |
| 申请公布号 |
US2014355315(A1) |
申请公布日期 |
2014.12.04 |
| 申请号 |
US201414284843 |
申请日期 |
2014.05.22 |
| 申请人 |
Sony Corporation |
发明人 |
Watanabe Hiroyuki |
| 分类号 |
H02M3/335 |
主分类号 |
H02M3/335 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A switching power supply device comprising:
a switching element to which a DC input is supplied; a frequency control circuit which controls a switching frequency of the switching element; a frequency detection circuit which detects the switching frequency of the switching element; and a duty ratio control circuit which controls a switching duty ratio based on the frequency detected by the frequency detection circuit, wherein the duty ratio control circuit controls the switching duty ratio such that the switching frequency becomes an approximately maximum frequency. |
| 地址 |
Tokyo JP |
