Controllers for DC/DC converter
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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May 23, 2017
Grant Date -
May 19, 2016
app pub date -
Nov 17, 2014
filing date -
Nov 17, 2014
priority date (Note) -
In Force
status (Latency Note)
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Importance

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Abstract
A DC/DC converter converts an input DC voltage to an output DC voltage and charges a battery. The DC/DC converter includes: a DC/DC controller, operable for generating a driving signal according to a target value for the output voltage and a first detection signal indicative of the output voltage level to control switching circuitry and to adjust the output voltage level; and a battery charging controller, coupled to the DC/DC controller and the battery, that is operable for receiving the first detection signal indicative of the output voltage level and a second detection signal indicative of a battery voltage level, and for generating a loop control signal according to the first detection signal and the second detection signal to adjust the target value for the output voltage, wherein the difference between the first detection signal and the second detection signal indicates the amount of a battery charging current.
First Claim
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Family
- No Family data available.
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
UBS AG SINGAPORE BRANCH AS SECURITY AGENT | 9 PENANG ROAD SINGAPORE 238459 |
International Classification(s)

- 2014 Application Filing Year
- H02J Class
- 3785 Applications Filed
- 3269 Patents Issued To-Date
- 86.37 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Guo, Guoyong | San Jose, US | 23 | 85 |
# of filed Patents : 23 Total Citations : 85 | |||
Li, Gang | Shenzhen, CN | 629 | 4192 |
# of filed Patents : 629 Total Citations : 4192 | |||
Lipcsei, Laszlo | Campbell, US | 68 | 613 |
# of filed Patents : 68 Total Citations : 613 |
Cited Art Landscape
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Patent Citation Ranking
- 1 Citation Count
- H02J Class
- 20.50 % this patent is cited more than
- 8 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 23, 2028 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

Legal Events
Date | Code | Event | Description |
---|---|---|---|
Nov 25, 2024 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 8TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2552); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY year of fee payment: 8 |
Jul 05, 2023 | AS | ASSIGNMENT | free format text: CHANGE OF NAME;ASSIGNOR:CREDIT SUISSE AG, SINGAPORE BRANCH. AS SECURITY AGENT;REEL/FRAME:069242/0457 Owner name: UBS AG, SINGAPORE BRANCH, AS SECURITY AGENT, SINGAPORE Effective Date: Jul 05, 2023 |
Jul 05, 2023 | AS | ASSIGNMENT | free format text: IP SECURITY AGREEMENT SUPPLEMENT;ASSIGNOR:O2 MICRO, INC.;REEL/FRAME:064259/0696 Owner name: CREDIT SUISSE AG, SINGAPORE BRANCH, AS SECURITY AGENT, SINGAPORE Effective Date: Jul 05, 2023 |
Nov 23, 2020 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 4TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2551); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY year of fee payment: 4 |
May 23, 2017 | I | Issuance | |
May 03, 2017 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
May 19, 2016 | P | Published | |
Nov 17, 2014 | F | Filing | |
Nov 17, 2014 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LI, GANG;GUO, GUOYONG;LIPCSEI, LASZLO;SIGNING DATES FROM 20141028 TO 20141103;REEL/FRAME:034190/0057 Owner name: O2MICRO INC, CALIFORNIA |

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