Accurate non-isolated high voltage DC-DC feedback
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United States of America Patent
Stats
-
Jun 12, 2018
Issued Date -
Feb 1, 2018
app pub date -
Jul 10, 2017
filing date -
Jul 26, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method and apparatus for regulating a non-isolated high voltage converter applies a PWM signal to a power transistor that couples an input voltage to a floating ground node to charge an inductor and generate an output voltage which is measured with a first floating comparator to disable the PWM signal upon detecting a high threshold output voltage, the first floating comparator having inputs connected across first and second resistive elements to measure a voltage across a feedback resistor connected in series with a diode between the output voltage and a neutral ground reference. Subsequently, the output voltage is measured with a second floating comparator to enable the PWM signal upon detecting a low threshold output voltage, where the second floating comparator has inputs connected across the first and second resistive elements to measure the feedback voltage across the feedback resistor.
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Cited Art Landscape
Patent Citation Ranking
- 5 Citation Count
- H02M Class
- 19.31 % this patent is cited more than
- 7 Age
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