Micrel, Inc.
🏢 View company profile →389Patents
179Active
389Granted
51Portfolio score
Filing activity: Aug 25, 1988 → Nov 16, 2016 · 113 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5568044A | Voltage regulator that operates in either PWM or PFM mode | Emerging Cross-Sectional Technologies | 218 | Expired |
| US7315052B2 | Power FET with embedded body pickup | Electricity | 162 | Expired |
| US7307614B2 | Light emitting diode driver circuit | Emerging Cross-Sectional Technologies | 114 | Expired |
| US5447876A | Method of making a diamond shaped gate mesh for cellular MOS transistor array | Electricity | 107 | Expired |
| US7064531B1 | PWM buck regulator with LDO standby mode | Emerging Cross-Sectional Technologies | 82 | Expired |
| US6825531B1 | Lateral DMOS transistor with a self-aligned drain region | Electricity | 79 | Expired |
| US5355008A | Diamond shaped gate mesh for cellular MOS transistor array | Electricity | 71 | Expired |
| US5517046A | High voltage lateral DMOS device with enhanced drift region | Electricity | 71 | Expired |
| US7148670B2 | Dual mode buck regulator with improved transition between LDO and PWM operation | Emerging Cross-Sectional Technologies | 67 | Expired |
| US7177325B2 | Operations, administration and maintenance (OAM) systems and methods for packet switched data networks | Electricity | 63 | Expired |
| US7482791B2 | Constant on-time regulator with internal ripple generation and improved output voltage accuracy | Electricity | 61 | Active |
| US7550934B1 | LED driver with fast open circuit protection, short circuit compensation, and rapid brightness control response | Emerging Cross-Sectional Technologies | 59 | Active |
| US4914546A | Stacked multi-polysilicon layer capacitor | Electricity | 58 | Expired |
| US8295336B2 | High bandwidth programmable transmission line pre-emphasis method and circuit | Electricity | 58 | Active |
| US6853174B1 | Selective high-side and low-side current sensing in switching power supplies | Emerging Cross-Sectional Technologies | 54 | Expired |
| US7064407B1 | JFET controlled schottky barrier diode | Electricity | 51 | Expired |
| USRE37609E1 | Voltage regulator that operates in either PWM or PFM mode | General | 51 | Expired |
| US7304464B2 | Switching voltage regulator with low current trickle mode | Emerging Cross-Sectional Technologies | 50 | Active |
| US6593621B2 | LDMOS field effect transistor with improved ruggedness in narrow curved areas | Electricity | 49 | Expired |
| US6307409A | Gate driver circuit for high and low side switches with primary and secondary shoot-through protection | Electricity | 46 | Expired |
| US7230408B1 | Pulse frequency modulated voltage regulator with linear regulator control | Electricity | 41 | Expired |
| US7015680B2 | Current-limiting circuitry | Emerging Cross-Sectional Technologies | 40 | Expired |
| US7659783B2 | System and method for phase-locked loop (PLL) for high-speed memory interface (HSMI) | Electricity | 37 | Active |
| US7145316B1 | Control circuit for monitoring and maintaining a bootstrap voltage in an N-channel buck regulator | Electricity | 37 | Expired |
| US7439945B1 | Light emitting diode driver circuit with high-speed pulse width modulated current control | Emerging Cross-Sectional Technologies | 37 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.