Location History:
- Saitama, JP (2015 - 2016)
- Niiza, JP (2016)
Company Filing History:
Years Active: 2015-2016
Title: Chie Isshi: Innovator in Power Supply Technology
Introduction
Chie Isshi is a prominent inventor based in Saitama, Japan. She has made significant contributions to the field of power supply technology, holding a total of 3 patents. Her innovative work focuses on enhancing the efficiency and functionality of power supply devices.
Latest Patents
One of her latest patents is a DC/DC converter. This invention includes a zero crossing detection circuit that outputs a zero crossing signal when an inductor's regeneration period is completed. It also features a light load detection circuit that compares an amplified error signal from an error amplifier with a threshold, outputting a light load signal. Additionally, a timer circuit outputs an intermittent operation enabling signal after a predetermined period based on the light load signal and zero crossing signal. It also outputs an intermittent operation disabling signal when the zero crossing signal is not outputted for a predetermined period. Furthermore, an ON-OFF control controller turns off a switching element when the amplified error signal falls below the threshold while the timer circuit is outputting the intermittent operation enabling signal, and turns on the switching element when the amplified error signal at least reaches or exceeds the threshold while the timer circuit is outputting the intermittent operation enabling signal.
Another notable patent is for a switching power-supply device and method for manufacturing such a device. This invention includes a switching element, an output circuit, and a feedback signal generation circuit. The control circuit drives the switching element based on the feedback signal and controls the voltage of the power-supply output. A correction circuit corrects the signal level of the feedback signal. The control circuit comprises an oscillation circuit that generates an on-trigger signal, a current detection circuit that generates a current detection signal, a difference detection circuit that generates a difference detection signal, and a comparison circuit that generates an off-trigger signal based on the current detection signal and the difference detection signal. Additionally, a first load detection circuit controls the operation of the correction circuit based on the current detection signal, allowing the control circuit to change the setting voltage of the power-supply output according to the signal level of the feedback signal.
Career Highlights
Chie Isshi is currently employed at Sanken Electric Co., Ltd., where she continues to innovate in the field of power supply technology. Her work has been instrumental in advancing the efficiency and reliability of power supply systems.
Collaborations
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.