Kin W Lau

20120153960, Jun 21, 2012

Dec 9, 2011

13/316158

Jason Allen Wortham - Fremont CA, US
Joseph Brian Vanden Wymelenberg - Los Altos CA, US
Kin Keung Lau - Redwood City CA, US

MAXIM INTEGRATED PRODUCTS, INC. - Sunnyvale CA

G01R 31/36

324426

Negative peak voltage detection for battery end of life estimations in fuel gauging is disclosed. Battery powered devices such cell phones and laptop computers create some noise in the form of negative excursions from the average output voltage of the battery which can cause the battery powered device to stop functioning. By negative peak detection relative to the average battery voltage, the end of life or discharged voltage condition can be altered in response to the negative peaks to obtain the maximum battery life without risk of the device inadvertently shutting down. Average output voltage of the battery may be taken as an estimated open circuit voltage or some other battery voltage. Various embodiments are disclosed.

D4305884, Sep 5, 2000

Aug 4, 1999

D/108931

Neil J. Goldberg - San Francisco CA
Edward J. Cornelius - San Francisco CA
Kin Shan Lau - San Jose CA
T. Lee Dahlmann - Morgan Hill CA
Timothy S. Couture - Sunnyvale CA
W. Andrew Morrison - Ooltewah TN

Telesensory Corporation - CA

1602

D16225

20210099085, Apr 1, 2021

Aug 12, 2020

16/991742

- Seongnam-si, KR
Kin Keung LAU - Redwood City CA, US

SILICON MITUS, INC - Seongnam-si

H02M 3/158
H02M 3/07
H03H 19/00

The present disclosure relates to a switch capacitor converter with high efficiency and a small size. The converter according to one aspect of the present disclosure is provided for receiving an input voltage through an input terminal and supplying an output voltage through an output terminal, the converter comprising: a first capacitor; a second capacitor; a third capacitor; and a switch network for changing a connection relationship between the input terminal, the output terminal, the first capacitor, the second capacitor, and the third capacitor. A ratio of the input voltage to the output voltage implemented in the converter is selectable from 4:1, 3:1, or 2:1 depending on an operation of the switch network.

20180115245, Apr 26, 2018

Oct 20, 2016

15/298397

- Seongnam-si, KR
Kin Keung LAU - Redwood City CA, US

H02M 3/158

The present invention provides a buck-boost converter including a converter power stage, a first mode control unit, and a second mode control unit. In the buck-boost converter, the converter power stage may include at least one inductor and a plurality of switching devices. Further, the first mode control unit may operate the converter power stage in a buck mode and regulate an output voltage of the converter power stage as a first voltage. Further, the second mode control unit may operate the converter power stage in a boost mode or a buck-boost mode, and regulate an output voltage of the converter power stage as a second voltage higher than the first voltage.