iWatt Inc.
🏢 View company profile →57Patents
35Active
57Granted
51Portfolio score
Filing activity: Nov 19, 1999 → Feb 5, 2013 · 29 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6894911B2 | Method of driving a power converter by using a power pulse and a sense pulse | Emerging Cross-Sectional Technologies | 222 | Expired |
| US6944034B1 | System and method for input current shaping in a power converter | Emerging Cross-Sectional Technologies | 184 | Expired |
| US6304473A | Operating a power converter at optimal efficiency | Emerging Cross-Sectional Technologies | 111 | Expired |
| US6385059B1 | Transformer-coupled switching power converter having primary feedback control | Electricity | 111 | Expired |
| US6275018A | Switching power converter with gated oscillator controller | Emerging Cross-Sectional Technologies | 107 | Expired |
| US7161816B2 | System and method for input current shaping in a power converter | Emerging Cross-Sectional Technologies | 105 | Expired |
| US6956750B1 | Power converter controller having event generator for detection of events and generation of digital error | Electricity | 102 | Expired |
| US6882552B2 | Power converter driven by power pulse and sense pulse | Emerging Cross-Sectional Technologies | 90 | Expired |
| US8222832B2 | Adaptive dimmer detection and control for LED lamp | Emerging Cross-Sectional Technologies | 83 | Active |
| US6972969B1 | System and method for controlling current limit with primary side sensing | Electricity | 78 | Expired |
| US6900995B2 | PWM power converter controlled by transistion detection of a comparator error signal | Electricity | 63 | Expired |
| US8018743B2 | Adaptive control for transition between multiple modulation modes in a switching power converter | Emerging Cross-Sectional Technologies | 58 | Active |
| US6370039B1 | Isolated power converter having primary feedback control | Electricity | 57 | Expired |
| US7505287B1 | On-time control for constant current mode in a flyback power supply | Electricity | 45 | Active |
| US8334662B2 | Adaptive switch mode LED driver | Emerging Cross-Sectional Technologies | 39 | Active |
| US6862198B2 | PWM power converter with digital sampling control circuitry | Electricity | 37 | Expired |
| US7928670B2 | LED driver with multiple feedback loops | Electricity | 36 | Active |
| US7024649B2 | Multi-output power supply design system | Physics | 32 | Expired |
| US6434021B1 | Switching power supply packages | Electricity | 31 | Expired |
| US7936132B2 | LED lamp | Emerging Cross-Sectional Technologies | 31 | Active |
| US6990000B1 | Reconstruction of the output voltage of an AC-DC power converter | Electricity | 27 | Expired |
| US6404173B1 | Linear AC to DC regulator with synchronous rectification | Physics | 25 | Expired |
| US7317625B2 | Parallel current mode control using a direct duty cycle algorithm with low computational requirements to perform power factor correction | Emerging Cross-Sectional Technologies | 25 | Expired |
| US6324079A | Four and five terminial PWM-controlled power supply packages | Electricity | 23 | Expired |
| US8049481B2 | Adaptive multi-mode digital control improving light-load efficiency in switching power converters | Emerging Cross-Sectional Technologies | 21 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.