Windowless H-bridge buck-boost switching converter
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United States of America Patent
Stats
-
Feb 13, 2018
Issued Date -
N/A
app pub date -
May 22, 2015
filing date -
Sep 21, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A “windowless” H-bridge buck-boost switching converter includes a regulation circuit with an error amplifier which produces a ‘comp’ signal, a comparison circuit which compares ‘comp’ with a ‘ramp’ signal, and logic circuitry which receives the comparison circuit output and a mode control signal indicating whether the converter is to operate in buck mode or boost mode and operates the primary or secondary switching elements to produce the desired output voltage in buck or boost mode, respectively. A ‘ramp’ signal generation circuit operates to shift the ‘ramp’ signal up by a voltage Vslp(p−p)+Vhys when transitioning from buck to boost mode, and to shift ‘ramp’ back down by Vslp(p−p)+Vhys when transitioning from boost to buck mode, thereby enabling the converter to operate in buck mode or boost mode only, with no need for an intermediate buck-boost region.
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Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- H02M Class
- 19.31 % this patent is cited more than
- 7 Age
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