公开(公告)号：US09819173B2

公开(公告)日：2017-11-14

申请号：US14656196

申请日：2015-03-12

Applicant: Seiko Instruments Inc.

Inventor： Daiki Endo ,  Fumimasa Azuma

IPC: H02H5/04 ,  H02H7/12 ,  G05F1/567

CPC classification number: H02H5/044 ,  G05F1/567

Abstract: To provide an overheat protection circuit which is not affected by a leak current while being low in current consumption and good in detection accuracy, and a voltage regulator equipped with the overheat protection circuit. An overheat protection circuit is configured to include a leak current detection circuit which detects that a leak current has flowed at a high temperature, a bias circuit which allows a bias current to flow in response to an output signal of the leak current detection circuit, and a temperature detection circuit operated by the bias current.

公开(公告)号：US09098100B2

公开(公告)日：2015-08-04

申请号：US13772095

申请日：2013-02-20

Applicant: Seiko Instruments Inc.

Inventor： Daiki Endo ,  Yotaro Nihei

IPC: H02M3/156 ,  G05F1/10

CPC classification number: G05F1/10 ,  G05F1/575

Abstract: There is provided a voltage regulator equipped with a reverse-current prevention function capable of ensuring safe performance without causing a large overshoot at an output terminal against a sharp fluctuation in source voltage. The voltage regulator provides a source voltage fluctuation detecting circuit for detecting a fluctuation in source voltage in a comparison circuit for comparing the source voltage with output voltage so that when the source voltage rises sharply, the current through constant current circuits for limiting the consumption current of the comparison circuit will be increased to improve the response characteristics.

Abstract translation: 提供一种具有防逆转功能的电压调节器，能够确保安全性能，而不会在输出端子上产生大的过冲，从而防止电源电压的急剧波动。 电压调节器提供源电压波动检测电路，用于检测比较电路中的源极电压的波动，用于将源极电压与输出电压进行比较，使得当源极电压急剧上升时，通过恒定电流电路的电流限制消耗电流 将增加比较电路以提高响应特性。