发明名称 |
Control circuit for a primary controlled switching power supply with increased accuracy of voltage regulation and primary controlled switched mode power supply |
摘要 |
The circuit has a control output (B) connected with a control input of a primary transistor of a primary controlled switching power supply. A pin (U) is connected with a primary auxiliary winding of a transformer for detecting an auxiliary voltage. The auxiliary voltage is induced depending on a secondary output voltage. An error amplifier (202) compares the detected auxiliary voltage with a reference voltage (Vref2), and amplifies a difference between the detected auxiliary voltage and reference voltage. A feedback branch feeds back output signals of the error amplifier to the pin. An independent claim is also included for a method for controlling a primary switch. |
申请公布号 |
EP2051360(B1) |
申请公布日期 |
2016.09.21 |
申请号 |
EP20070020316 |
申请日期 |
2007.10.17 |
申请人 |
POWER SYSTEMS TECHNOLOGIES GMBH |
发明人 |
SCHRÖDER, RALF;MALSCH, RÜDIGER |
分类号 |
H02M3/335 |
主分类号 |
H02M3/335 |
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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