| 发明名称 | Oscillator and power management apparatus | ||
| 摘要 | An oscillator includes a transformer, a first capacitor, a first transistor, a depletion or native second transistor, and a current control circuit. The transformer includes a primary winding configured to receive an input voltage and a secondary winding configured to boost the input voltage to generate an output voltage. The first capacitor is configured to form an LC resonant circuit together with the secondary winding to cause oscillation operation, the first transistor is connected in series with the primary winding, and the output voltage is applied to a control terminal of the first transistor. The depletion or native second transistor is connected in series with the primary winding and the first transistor, and the current control circuit is configured to adjust a control voltage applied to a control terminal of the second transistor to control a current flowing through the first winding. | ||
| 申请公布号 | US9240753(B2) | 申请公布日期 | 2016.01.19 |
| 申请号 | US201414572504 | 申请日期 | 2014.12.16 |
| 申请人 | FUJITSU LIMITED | 发明人 | Gao Hong;Kondou Masafumi;Nakamoto Hiroyuki |
| 分类号 | H03B5/12 | 主分类号 | H03B5/12 |
| 代理机构 | Arent Fox LLP | 代理人 | Arent Fox LLP |
| 主权项 | 1. An oscillator comprising: a transformer including a primary winding configured to receive an input voltage and a secondary winding configured to boost the input voltage to generate an output voltage; a first capacitor configured to form an LC resonant circuit together with the secondary winding to cause oscillation; a first transistor connected in series with the primary winding, the output voltage being applied to a control terminal of the first transistor; a depletion or native second transistor connected in series with the primary winding and the first transistor; and a current control circuit configured to adjust a control voltage applied to a control terminal of the second transistor to control a current flowing through the first winding. | ||
| 地址 | Kawasaki JP | ||