SIGNAL CONVERTER WITH OVERCURRENT PROTECTION MECHANISM
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United States of America Patent
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Issued Date -
Nov 29, 2012
app pub date -
May 23, 2011
filing date -
May 23, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A signal converter with an overcurrent protection mechanism comprises a pulse width modulation (PWM) unit, a timing processing and multi-level conversion unit, an overcurrent detection unit, and a pulse width control unit. The PWM unit converts an analog signal into a pulse signal. The timing processing and multi-level conversion unit receives the pulse signal and converts the pulse signal into a multi-level digital signal. The overcurrent detection unit has a reference voltage terminal outputting a reference voltage. The overcurrent detection unit receives the multi-level digital signal and converts the multi-level digital signal into a detection voltage. The pulse width control unit compares the detection voltage with the reference voltage and outputs a control signal to the PWM unit. Thereby is formed a feedback mechanism to adjust the output voltage and prevent the succeeding circuit from being damaged caused by overcurrent of the pulse signal.
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