Temperature compensation in output feedback of a flyback power converter
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United States of America Patent
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Jan 8, 2013
Grant Date -
Jan 27, 2011
app pub date -
Jul 19, 2010
filing date -
Jul 22, 2009
priority date (Note) -
Expired
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Abstract
A secondary circuit of a flyback power converter has a resistor network to monitor the output current of the flyback power converter, so as to generate a voltage to apply to a base of a bipolar junction transistor to thereby provide a collector signal for output feedback. The resistor network has a temperature-dependent resistance to compensate the temperature dependence of the base-emitter voltage imparted to the output current and thereby stable the output current.
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