Inventor
Junjie Zheng
Inventor
Santa Clara, CA, US
Overview
Patents· 37 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Mprimary
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems48%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications28%
H05BElectric heating12%
G05FSystems for regulating electric or magnetic variables6%
H03KPulse technique3%
Y02PClimate change mitigation technologies in the production or processing of goods3%
H02JElectric power networks1%
PatentTitleYear
10,187,950Adjusting color temperature in a dimmable LED lighting system201910,063,073USB power converter with bleeder circuit for fast correction of output voltage by discharging output capacitor20189,844,113'Adjusting color temperature in a dimmable LED lighting system'20179,525,352'Magnitude adjustment of the drive signal of a switching transistor of a switching power converter'20169,444,364'Adaptive peak power control'20169,420,645'Constant current control buck converter without current sense'20169,318,963'Switching power converter with secondary to primary messaging'20169,154,039'Switching power converter with secondary-side dynamic load detection and primary-side feedback and control'20159,084,325'Adaptive dimmer detection and control for LED lamp'20158,970,135'Adaptive dimmer detection and control for LED lamp'20158,964,422'EMI frequency spreading method for switching power converter'20158,933,582'Dual output power supply'20158,854,842'Digital communication link between secondary side and primary side of switching power converter'20148,755,203'Valley-mode switching schemes for switching power converters'20148,643,303'Adaptive dimmer detection and control for LED lamp'20148,576,586'Dynamic drive of switching transistor of switching power converter'20138,553,431'Switching power converter with load impedance detection'20138,289,732'Controller for switching power converter driving BJT based on primary side adaptive digital control'20128,222,832'Adaptive dimmer detection and control for LED lamp'20128,199,539'Adaptive control for transition between multiple modulation modes in a switching power converter'20128,199,537'Detecting light load conditions and improving light load efficiency in a switching power converter'20128,049,481'Adaptive multi-mode digital control improving light-load efficiency in switching power converters'20118,018,743'Adaptive control for transition between multiple modulation modes in a switching power converter'20117,974,107'System and method for controlling a current limit with primary side sensing using a hybrid PWM and PFM control'20117,928,670'LED driver with multiple feedback loops'20117,880,447'Power converter controller IC having input voltage pin with multiple functions'20117,876,582'Compensating on-time delay of switching transistor in switching power converters'20117,724,547'Compensating on-time delay of switching transistor in switching power converters'20107,558,093'Power converter with emulated peak current mode control'20097,554,821'System and method for input current shaping in a power converter'20097,548,438'System and method for input current shaping in a power converter'20097,511,973'Constant current mode ripple attenuation method in flyback power supply'20097,443,700'On-time control for constant current mode in a flyback power supply'20087,433,211'System and method for input current shaping in a power converter'20087,161,816'System and method for input current shaping in a power converter'20076,972,969'System and method for controlling current limit with primary side sensing'20056,944,034'System and method for input current shaping in a power converter'2005Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2005–2016Patents assigned to IWATT INC (28)· patent assignee history
2005–2009Based in Campbell, CA, US· patent location history
2008–2019Based in Santa Clara, CA, US· patent location history
2012–2015Patents assigned to ZHENG JUNJIE (9)· patent assignee history
2012–2014Patents assigned to KESTERSON JOHN WILLIAM (4)· patent assignee history
2012–2014Patents assigned to LI YONG (3)· patent assignee history
2014–2019Patents assigned to DIALOG SEMICONDUCTOR INC (14)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| IWATT INC | 28 | 2005–2016 |
| DIALOG SEMICONDUCTOR INC | 14 | 2014–2019 |
| ZHENG JUNJIEself | 9 | 2012–2015 |
| KESTERSON JOHN WILLIAM | 4 | 2012–2014 |
| LI YONG | 3 | 2012–2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Santa Clara, California, US | 31 | 2008–2019 |
| Campbell, California, US | 6 | 2005–2009 |