发明名称 |
Current mode controlled switched mode power supply |
摘要 |
The invention concerns switched mode power supplies, and a current mode control circuit for such a power supply. In one of the described embodiments of the present invention, instead of employing a sense resistor directly in the primary circuit, line voltage and primary current are emulated by means of an auxiliary winding (130) on the primary side. Current flowing in a resistor (R1) is buffered by means of first and second current mirrors (312, 313) to provide a voltage varying over time at an input of a pulse width modulator (322). This voltage is utilized to provide current mode controlled operation of the switch mode power supply.
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申请公布号 |
US2004155639(A1) |
申请公布日期 |
2004.08.12 |
申请号 |
US20030481999 |
申请日期 |
2003.12.23 |
申请人 |
MOBERS ANTONIUS MARIA GERARDUS |
发明人 |
MOBERS ANTONIUS MARIA GERARDUS |
分类号 |
H02M3/28;H02M3/335;(IPC1-7):G05F1/40 |
主分类号 |
H02M3/28 |
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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