Title:
AMPLIFICATION CIRCUIT, SWITCHING POWER SUPPLY CIRCUIT, AND SWITCHING POWER SUPPLY DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/254995
Kind Code:
A1
Abstract:
An amplification circuit configured to generate an error voltage corresponding to a difference between a subject voltage and a reference voltage, the amplification circuit comprising: a first differential input pair including a first transistor configured to receive the subject voltage at a gate thereof and a second transistor configured to receive the reference voltage at a gate thereof; and a second differential input pair including a third transistor configured to receive the subject voltage at a gate thereof and a fourth transistor configured to receive the reference voltage at a gate thereof. The error voltage is generated using the first differential input pair or the second differential input pair depending on the reference voltage. The first transistor and the second transistor are formed of P-channel MOSFETs. The third transistor and the fourth transistor are formed of N-channel MOSFETs.
Inventors:
KUBOTA KANTO (JP)
MURAKAMI KAZUHIRO (JP)
TANAKA KUNIMASA (JP)
MURAKAMI KAZUHIRO (JP)
TANAKA KUNIMASA (JP)
Application Number:
PCT/JP2022/018522
Publication Date:
December 08, 2022
Filing Date:
April 22, 2022
Export Citation:
Assignee:
ROHM CO LTD (JP)
International Classes:
H03F1/26; H02M3/155; H03F3/45
Domestic Patent References:
| WO2012053133A1 | 2012-04-26 |
Foreign References:
| JP2019221099A | 2019-12-26 |
Attorney, Agent or Firm:
SANO PATENT OFFICE (JP)
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