发明名称 |
POWER FACTOR CORRECTION DEVICE, AND CONTROLLER AND THD ATTENUATOR USED BY SAME |
摘要 |
A power factor correction device, and a controller and a total harmonic distortion (THD) attenuator used by same. The power factor correction device comprises a converter and a controller (320) connected to the converter to obtain an input voltage. The controller (320) comprises a THD attenuator (407) for automatic THD optimization. The converter comprises an input current detection resistor (3R8), a power switch tube (3NMOS) and an output circuit. The input current detection resistor (3R8), the power switch tube (3NMOS) and the output circuit form a feedback control loop to maintain a constant output voltage. A THD optimization function is built in the device so that the entire device is capable of being accurately offset to a designed voltage so as to be used for THD optimization, thereby dispensing with external manual adjustment and overcoming internal technical deviations while achieving high consistency. |
申请公布号 |
WO2012048630(A1) |
申请公布日期 |
2012.04.19 |
申请号 |
WO2011CN80630 |
申请日期 |
2011.10.11 |
申请人 |
FREMONT MICRO DEVICES (SHENZHEN) LIMITED;GU, WENHAO;TAN, RUNQIN;GUO, LIFANG |
发明人 |
GU, WENHAO;TAN, RUNQIN;GUO, LIFANG |
分类号 |
H02M1/42 |
主分类号 |
H02M1/42 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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