SCALE EXPANSION TYPE SCALABLE POWER SUPPLY SYSTEM

WIPO Patent Application WO/2023/182052

A1

A signal expansion circuit (31) is electrically connected between an MPU (20) and a drive circuit (120), and generates and outputs a second drive signal phase-adjusted with respect to a first drive signal. A low-voltage malfunction prevention circuit (41) is connected between the output ends of the MPU (20) and signal extension circuit (31) and the input end of the drive circuit (120). The first drive signal is a three-state signal having a first voltage, a second voltage, and a third voltage, from the lowest side. The low-voltage malfunction prevention circuit (41) includes a detection/comparison circuit (411) that detects an output voltage Vo and determines that it is equal to or lower than a threshold value Vth, which is a voltage value lower than a predetermined output voltage. When the output voltage Vo is lower than the threshold value Vth, the low voltage malfunction prevention circuit (41) outputs the first drive signal to the drive circuit (120) as the second drive signal. When the output voltage Vo is higher than the threshold value Vth, the low voltage malfunction prevention circuit (41) outputs to the drive circuit (120) the second drive signal that is phase-adjusted by the signal expansion circuit (31) with respect to the first drive signal.

FUJIWARA YOSHIHIRO (JP)
HOSOTANI TATSUYA (JP)

PCT/JP2023/009643

September 28, 2023

March 13, 2023

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MURATA MANUFACTURING CO (JP)

H02M3/155

WO2015037204A1

2015-03-19

JP2015146711A	2015-08-13
JP2013162586A	2013-08-19
JP2018182783A	2018-11-15
JP2015226340A	2015-12-14

KAEDE PATENT ATTORNEYS' OFFICE (JP)

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