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Patent Searching and Data


Title:
MULTIFUNCTION THREE QUARTER BRIDGE
Document Type and Number:
Japanese Patent JP2019162025
Kind Code:
A
Abstract:
To provide a buck-derived switched mode power supply with a three-quarter bridge (TQB) formed with a bypass switch in parallel with an inductor capable of improving efficiency and load transient response performance.SOLUTION: Bypass switches Q3 and Q4, in response to decrease in average load demand, operate in a first mode to turn on the bypass switch to selectively circulate inductor current IL through the bypass switch while a high-side switch Q1 and a low-side switch Q2 are off. In a second mode, the bypass switch is turned off to circulate the inductor current through an output capacitor C1 and the low-side switch. The bypass switch selectively transfers a controlled amount of energy stored in an inductor L1 to the output capacitor in response to decrease in the average load demand.SELECTED DRAWING: Figure 3A

Inventors:
CHRIS M YOUNG
Application Number:
JP2019044550A
Publication Date:
September 19, 2019
Filing Date:
March 12, 2019
Export Citation:
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Assignee:
ALPHA & OMEGA SEMICONDUCTOR CAYMAN LTD
International Classes:
H02M3/155
Attorney, Agent or Firm:
Tomokazu Adachi
Naoto Wada