Chun Lu Phones & Addresses
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Las Vegas, NV
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Diamond Bar, CA
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76 7Th St, San Jose, CA 95112
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760 7Th St, San Jose, CA 95112
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4146 Voltaire St, San Jose, CA 95148
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405 Los Robles Ave, Pasadena, CA 91101
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6310 Rancho Mission Rd, San Diego, CA 92108
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La Mesa, CA
Business Records
Name / Title
Company / Classification
Phones & Addresses
Principal
An Guo Cabinet LLC
Nonclassifiable Establishments
Nonclassifiable Establishments
14115 Dunia St, Duarte, CA 91706
Manager
Sweet Home Investment, LLC
701 N Grn Vly Pkwy, Henderson, NV 89074
Manager
Sweet Deal Homes, LLC
701 N Grn Vly Pkwy, Henderson, NV 89074
Ancer Holding LLC
Provide Real Estate Rental Service · Holding Company
Provide Real Estate Rental Service · Holding Company
1 League, Irvine, CA 92602
4081 Old Ml St, Irvine, CA 92604
4081 Old Ml St, Irvine, CA 92604
Guo An Cabinet, LLC
Home Remodeling
Home Remodeling
18822 Bch Blvd, Huntington Beach, CA 92648
14115 Dunia St, Duarte, CA 91706
14115 Dunia St, Duarte, CA 91706
HUI LIN INC
HUI YI LLC
President
REDMAN USA INC
Whol Furniture
Whol Furniture
15249 Don Julian Rd, Hacienda Heights, CA 91745
15249 Don Julian Rd, Whittier, CA 91745
15249 Don Julian Rd, Whittier, CA 91745
Publications
Us Patents
Power Management System With Multiple Power Sources
View pageUS Patent:
7498694, Mar 3, 2009
Filed:
Apr 12, 2006
Appl. No.:
11/402387
Inventors:
Luyang Luo - Sichuan, CN
Chun Lu - San Jose CA, US
Jianping Xu - Sichuan, CN
Lin Tang - Sichuan, CN
Chun Lu - San Jose CA, US
Jianping Xu - Sichuan, CN
Lin Tang - Sichuan, CN
Assignee:
02Micro International Ltd. - Georgetown
International Classification:
H02J 3/00
US Classification:
307 82, 307 43, 323282, 323205
Abstract:
A power management device for enabling multiply power sources to supply power to a load. The power management device includes a plurality of switches and a control logic. The plurality of switches are coupled to a plurality of power sources respectively and each switch coupled to each power source. The control logic is capable of selecting a set of switches among the plurality of switches to cooperate in a time-divided fashion to allow the power sources to provide power to the load. The set of switches is selected based on an electrical requirement of the load and an electrical condition of each switch.
Controller For A Dc To Dc Converter Having Linear Mode And Switch Mode Capabilities
View pageUS Patent:
7508176, Mar 24, 2009
Filed:
Oct 13, 2005
Appl. No.:
11/250048
Inventors:
Alexandru Hartular - San Jose CA, US
Chun Lu - San Jose CA, US
Constantin Bucur - Santa Clara CA, US
Vlad Mihail Popescu-Stanesti - San Jose CA, US
Jiwei Chen - Santa Clara CA, US
Oleg Kobildjanov - San Jose CA, US
Chun Lu - San Jose CA, US
Constantin Bucur - Santa Clara CA, US
Vlad Mihail Popescu-Stanesti - San Jose CA, US
Jiwei Chen - Santa Clara CA, US
Oleg Kobildjanov - San Jose CA, US
Assignee:
O2Micro International Limited - Georgetown, Grand Cayman
International Classification:
G05F 1/59
US Classification:
323268, 323273
Abstract:
A controller for a DC to DC converter. The controller may comprise linear mode circuitry and switch mode control circuitry. The linear mode control circuitry may be capable of providing a first control signal to a controlled device of the DC to DC converter. The controlled device may operate as a variable resistor in response to the first control signal to control an output voltage of the DC to DC converter. The switch mode control circuitry may be capable of providing a second control signal to the controlled device of the DC to DC converter. The controlled device may turn ON and OFF in response to the second control signal to control the output voltage of the DC to DC converter. One of the linear mode control circuitry and the switch mode control circuitry may be enabled. The controller may also include protection circuitry.
Current Mode Battery Charger Controller
View pageUS Patent:
7592777, Sep 22, 2009
Filed:
Nov 18, 2005
Appl. No.:
11/283087
Inventors:
Chun Lu - San Jose CA, US
Alexandru Hartular - San Jose CA, US
Constantin Bucur - Santa Clara CA, US
Alexandru Hartular - San Jose CA, US
Constantin Bucur - Santa Clara CA, US
Assignee:
O2Micro International Limited - Georgetown, Grand Cayman
International Classification:
H02J 7/16
US Classification:
320141, 320134, 320162
Abstract:
A current mode charger controller for controlling a DC to DC converter. The current mode charger may include a first error amplifier having an output coupled to a common node. The first error amplifier may be configured to compare a first signal representative of a charging current provided to a rechargeable battery with a maximum charging current and provide a current control signal in response to the comparison. The current mode charger controller may further include an internal compensation network coupled to the common node, and a comparator configured to compare an inductor current signal representative of an inductor current through an inductor of the DC to DC converter with a compensation signal. The need for any external compensation for the current mode charger controller may be eliminated.
Power Management Circuit For Battery Pack
View pageUS Patent:
7737662, Jun 15, 2010
Filed:
Dec 26, 2006
Appl. No.:
11/645491
Inventors:
Chun Lu - San Jose CA, US
Stefan Maireanu - Sunnyvale CA, US
Luyang Luo - Sichuan, CN
Lin Tang - Sichuan, CN
Mingzhi He - Sichuan, CN
Jianping Xu - Sichaun, CN
Stefan Maireanu - Sunnyvale CA, US
Luyang Luo - Sichuan, CN
Lin Tang - Sichuan, CN
Mingzhi He - Sichuan, CN
Jianping Xu - Sichaun, CN
Assignee:
O2Micro International Ltd. - Georgetown
International Classification:
H02J 7/00
US Classification:
320134, 320136, 320150
Abstract:
A power system for managing charging, discharging and protection of rechargeable batteries is disclosed. The power system mainly includes a power system. The power system includes a switching circuit coupled to the rechargeable batteries to charge and discharge the rechargeable batteries. The power system includes a power management unit to control the switching circuit. The power system includes a temperature sensing circuit to monitor a temperature of the batteries, voltage detectors to monitor voltages of the batteries, and current detectors to monitor a current of the batteries. If an abnormal condition is sensed by the power management unit when the power system is in an operating mode, the power management unit will terminate the operating mode by switching off the switching circuit to protect the batteries and the power system.
Topology And Method For Dynamic Charging Current Allocation
View pageUS Patent:
7804278, Sep 28, 2010
Filed:
Jul 25, 2007
Appl. No.:
11/880898
Inventors:
Stefan Maireanu - Sunnyvale CA, US
Chun Lu - San Jose CA, US
Jianping Xu - Chengdu, CN
Xiaohua Lei - Chengdu, CN
Zhitong Lei - Chengdu, CN
Yongqiang Yu - Chengdu, CN
Chun Lu - San Jose CA, US
Jianping Xu - Chengdu, CN
Xiaohua Lei - Chengdu, CN
Zhitong Lei - Chengdu, CN
Yongqiang Yu - Chengdu, CN
Assignee:
O2Micro International Ltd. - Georgetown, Grand Cayman
International Classification:
H02J 7/04
H02J 7/00
H02J 7/00
US Classification:
320145, 320133, 320140, 320141, 320151, 320160
Abstract:
In one embodiment, a battery management system includes a charger controller for controlling a charging current of a battery according to a status of a load which is powered by the battery, and a counter coupled to the charger controller for determining a charging time according to such status. Advantageously, a first charging current is selected when the load is off. A second charging current that is less than the first charging current is selected when the load is on. Furthermore, a frequency of the counter is set to a first frequency when the load is off. The frequency is set to a second frequency that is less than the first frequency when the load is on.
Power Management Systems With Current Sensors
View pageUS Patent:
7868483, Jan 11, 2011
Filed:
Jan 18, 2008
Appl. No.:
12/009466
Inventors:
Chun Lu - San Jose CA, US
Xinhe Su - Chengdu, CN
Xinhe Su - Chengdu, CN
Assignee:
O2Micro, Inc. - Santa Clara CA
International Classification:
H02J 1/00
US Classification:
307 85, 307 64, 307 70, 307 80, 307 86
Abstract:
A power management system includes a power management unit (PMU) and a current sensor. The PMU is operable for controlling a first power source and a second power source. The second power source is operable for being charged by the first power source via a charging path. The current sensor has a first terminal coupled to the first power source and the second power source and has a second terminal coupled to the second power source via the charging path. The current sensor is operable for sensing a first current flowing from the first power source through the current sensor and for sensing a second current flowing from the second power source through the current sensor.
Power Supply Topology
View pageUS Patent:
7977911, Jul 12, 2011
Filed:
Oct 1, 2007
Appl. No.:
11/906251
Inventors:
Stefan Maireanu - Sunnyvale CA, US
Alex Hartular - San Jose CA, US
Chun Lu - San Jose CA, US
Jianping Xu - Chengdu, CN
Xinhe Su - Chengdu, CN
Xiaodong Wang - Chengdu, CN
Alex Hartular - San Jose CA, US
Chun Lu - San Jose CA, US
Jianping Xu - Chengdu, CN
Xinhe Su - Chengdu, CN
Xiaodong Wang - Chengdu, CN
Assignee:
O2 Micro, Inc. - Santa Clara CA
International Classification:
H02J 7/00
US Classification:
320103, 320128, 307 66
Abstract:
A power supply system can include a primary power supply coupled to an output, and a secondary power supply coupled to the output. The primary power supply provides power to the output when a voltage level of the secondary power supply is less than a first predetermined level. The secondary power supply provides power to the output when the voltage level of the secondary power supply is greater than the first predetermined level. The secondary power supply not only provides power to the output, but also charges the primary power supply when the voltage level of the secondary power supply is greater than a second predetermined level that is greater than the first predetermined level.
System For Managing Power Based On Current Monitoring
View pageUS Patent:
8217530, Jul 10, 2012
Filed:
Jun 30, 2009
Appl. No.:
12/495758
Inventors:
Chun Lu - San Jose CA, US
Luyang Luo - Chengdu, CN
Luyang Luo - Chengdu, CN
Assignee:
O2Micro, Inc - Santa Clara CA
International Classification:
H02J 1/10
H02J 7/34
H02J 7/34
US Classification:
307 52, 307 44, 307 45
Abstract:
A system includes a power bus and a circuit. The power bus delivers power from a first power source to an output node. The circuit monitors a current flowing through the power bus and provides power from a second power source to the output node based on an amount of the current, and maintains a voltage level of the output node in a predetermined range.