Voltage detection circuit for voltage measurement apparatus for use in assembled battery system

    公开(公告)号:US11513163B2

    公开(公告)日:2022-11-29

    申请号:US16643452

    申请日:2018-08-28

    摘要: A voltage detection circuit is provided for measuring each cell voltage of an assembled battery configured by connecting a plurality of cells in series. The voltage detection circuit is defined as a first voltage detection circuit. The voltage detection circuit includes a downstream communication circuit that communicates with a host apparatus to communicate with a plurality of voltage detection circuits connected in series with each other; a reply signal generation circuit that generates a reply signal containing data detected by the first voltage detection circuit; an upstream transfer circuit that transfers a signal received by the upstream communication circuit to downstream; a dummy current consumption circuit that consumes a predetermined dummy current; and a control circuit that controls the reply signal generation circuit, the upstream transfer circuit, and the dummy current consumption circuit to selectively operate any one of them.

    High-frequency transistor
    4.
    发明授权

    公开(公告)号:US11195904B2

    公开(公告)日:2021-12-07

    申请号:US16933574

    申请日:2020-07-20

    摘要: A high-frequency transistor includes a source electrode, a drain electrode, a gate electrode, and a gate drive line that applies a voltage to the gate electrode. An impedance adjustment circuit is connected between the gate electrode and the gate drive line. A characteristic impedance of the gate electrode is Z1, when a connecting point between the impedance adjustment circuit and the gate electrode is viewed from the impedance adjustment circuit. A characteristic impedance of the gate drive line is Z2, when a connecting point between the impedance adjustment circuit and the gate drive line is viewed from the impedance adjustment circuit. X that denotes a characteristic impedance of the impedance adjustment circuit is a value between Z1 and Z2.

    Semiconductor device
    5.
    发明授权

    公开(公告)号:US11171234B2

    公开(公告)日:2021-11-09

    申请号:US16986810

    申请日:2020-08-06

    摘要: A semiconductor device includes a first transistor disposed in a first region of a semiconductor layer and a second transistor disposed in a second region of the semiconductor layer, and includes, on the surface of the semiconductor layer, first source pads, a first gate pad, second source pads, and a second gate pad. In the plan view of the semiconductor layer, the first and second transistors are aligned in a first direction; the first gate pad is disposed such that none of the first source pads is disposed between the first gate pad and a side parallel to the first direction and located closest to the first gate pad; and the second gate pad is disposed such that none of the second source pads is disposed between the second gate pad and a side parallel to the first direction and located closest to the second gate pad.

    Wavelength conversion element and light emitting device

    公开(公告)号:US10777711B2

    公开(公告)日:2020-09-15

    申请号:US15951897

    申请日:2018-04-12

    摘要: A light emitting device includes a wavelength conversion element, and an excitation light source which radiates excitation light to the wavelength conversion element. The wavelength conversion element includes a support member having a supporting surface, and a wavelength conversion member disposed on the supporting surface so as to be contained within the support member when the support member is viewed from the supporting surface side. An outer peripheral region on the support member, which is an outer peripheral portion of an arrangement region including the wavelength conversion member and is exposed from the wavelength conversion member, includes a light absorbing portion which can absorb first light having same wavelength as the excitation light or a light scattering portion which can scatter the first light. The arrangement region includes a reflective member which is disposed between the wavelength conversion member and the support member, and is different from the support member.