Title:
ISOLATION TRANSFORMER
Document Type and Number:
WIPO Patent Application WO/2022/210541
Kind Code:
A1
Abstract:
An isolation transformer comprising an insulating layer, a transformer, and a capacitor having a first capacitor electrode and a second capacitor electrode. The transformer includes: a first coil having a first signal end and a first ground end and configured such that a low voltage can be applied to the first signal end; and a second coil which is spaced apart from the first coil in a thickness direction of the insulating layer, has a second signal end and a second ground end, and is configured such that a high voltage can be applied to the second signal end. The insulating layer includes a plurality of thin films and a plurality of inter-layer insulating films that are alternately stacked in the thickness direction. The plurality of thin films include a first thin film and a second thin film spaced apart from each other in the thickness direction. The plurality of inter-layer insulating films include a first inter-layer insulating film adjacent to the first thin film in the thickness direction, and a second inter-layer insulating film adjacent to the second thin film in the thickness direction. The first capacitor electrode is formed between the first thin film and the first inter-layer insulating film. The second capacitor electrode is formed between the second thin film and the second inter-layer insulating film.
Inventors:
TANAKA BUNGO (JP)
Application Number:
PCT/JP2022/015019
Publication Date:
October 06, 2022
Filing Date:
March 28, 2022
Export Citation:
Assignee:
ROHM CO LTD (JP)
International Classes:
H01L25/00; H01F19/04; H01F27/00; H01L21/822; H01L27/04; H02M1/08; H03K17/691
Domestic Patent References:
| WO2020183867A1 | 2020-09-17 | |||
| WO2013145019A1 | 2013-10-03 |
Foreign References:
| JP2016028407A | 2016-02-25 | |||
| JP2016006816A | 2016-01-14 |
Attorney, Agent or Firm:
ONDA Makoto et al. (JP)
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