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Title:
POWER SUPPLY MODULATOR, AND POWER SUPPLY MODULATION TYPE AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/2021/205614
Kind Code:
A1
Abstract:
A power supply modulator (1) is provided with: a first switching element (11) which has a first terminal and a second terminal, wherein a first voltage is applied to the first terminal, and the second terminal is connected to an output terminal; and a second switching element (13) which has a third terminal and a fourth terminal, wherein the third terminal is connected to both the output terminal and the second terminal, and a second voltage lower than the first voltage is applied to the fourth terminal. Further, the power supply modulator (1) is provided with a first driver circuit (15) which has a fifth terminal and a sixth terminal, wherein the first voltage is applied to the fifth terminal, the sixth terminal is grounded, and opening and closing of the first switching element (11) is controlled by changing the resistance value between the fifth terminal and the sixth terminal in accordance with the signal level of a pulse width modulation signal; and a second driver circuit (17) which has a seventh terminal and an eighth terminal, wherein the seventh terminal is grounded, the second voltage is applied to the eighth terminal, and opening and closing of the second switching element (13) is controlled by changing the resistance value between the seventh terminal and the eighth terminal in accordance with the signal level of the inverted signal of the pulse width modulation signal.

Inventors:
SAIKI KENTO (JP)
SAKATA SHUICHI (JP)
KOMATSUZAKI YUJI (JP)
SHINJO SHINTARO (JP)
Application Number:
PCT/JP2020/016017
Publication Date:
October 14, 2021
Filing Date:
April 09, 2020
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H03K17/687; H03F1/02; H03F3/20; H03F3/217
Attorney, Agent or Firm:
SANNO PATENT ATTORNEYS OFFICE (JP)
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