Robert H. Isham
68Patents
14h-index
28Co-inventors
84Inventor score
Filing activity: Aug 19, 1976 → Jun 4, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6246220A | Synchronous-rectified DC to DC converter with improved current sensing | Emerging Cross-Sectional Technologies | 91 | Expired |
| US6181120A | Current mode dc/dc converter with controlled output impedance | Electricity | 86 | Expired |
| US6278263A | Multi-phase converter with balanced currents | Electricity | 74 | Expired |
| US6249446A | Cascadable, high efficiency charge pump circuit and related methods | Electricity | 64 | Expired |
| US6700365B2 | Programmable current-sensing circuit providing discrete step temperature compensation for DC-DC converter | Electricity | 39 | Expired |
| USRE38940E1 | Synchronous-rectified DC to DC converter with improved current sensing | General | 37 | Expired |
| US6696825B2 | DC-to-DC converter with fast override feedback control and associated methods | Emerging Cross-Sectional Technologies | 33 | Expired |
| US6765372B2 | Programmable current-sensing circuit providing continuous temperature compensation for DC-DC Converter | Emerging Cross-Sectional Technologies | 27 | Expired |
| US7453250B2 | PWM controller with dual-edge modulation using dual ramps | Emerging Cross-Sectional Technologies | 20 | Active |
| USRE38487E1 | Synchronous-rectified DC to DC converter with improved current sensing | General | 20 | Expired |
| USRE38454E1 | Multi-phase converter with balanced currents | General | 17 | Expired |
| US7453246B2 | Adaptive PWM pulse positioning for fast transient response | Electricity | 16 | Active |
| US6977489B2 | Multiphase converter controller using single gain resistor | Electricity | 16 | Expired |
| US6975261B1 | High accuracy digital to analog converter using parallel P and N type resistor ladders | Electricity | 15 | Expired |
| US7868600B2 | Adaptive PWM pulse positioning for fast transient response | Electricity | 13 | Active |
| USRE38780E1 | Current mode DC/DC converter with controlled output impedance | General | 13 | Expired |
| US8188721B2 | Active pulse positioning modulator | Electricity | 11 | Active |
| US7679218B1 | Load compensated switching regulator | Electricity | 11 | Active |
| US7489121B2 | Compensation offset adjustment scheme for fast reference voltage transitioning | Electricity | 10 | Active |
| US6703893B1 | Method of setting bi-directional offset in a PWM controller using a single programming pin | Electricity | 10 | Expired |
| US7592787B2 | Adaptive firing order control for dynamic current balance of multiphase voltage regulators | Electricity | 10 | Active |
| USRE38846E1 | Multi-phase converter with balanced currents | General | 9 | Expired |
| US7088151B1 | High voltage gate driver using a low voltage multi-level current pulse translator | Electricity | 9 | Expired |
| US7812581B2 | Pulse adding scheme for smooth phase dropping at light load conditions for multiphase voltage regulators | Emerging Cross-Sectional Technologies | 9 | Active |
| US4471243A | Bidirectional interface | Electricity | 9 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.