System and method for providing communication of over-current protection and current mode control between multiple chips in an integrated circuit
US7642842B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2006 |
| Grant date | Jan 5, 2010 |
| Priority date | — |
| Expiry date | May 24, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/1305
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A system and method is disclosed for providing communication of an over-current protection signal and current mode control signals between a controller chip and a power chip in an integrated circuit device that comprises a plurality of integrated circuit chips. The controller chip sends pulse width modulation signals and a reference current signal to the power chip. Current flow status detection circuitry in the power chip detects a current flow status in the power chip and provides a current flow status signal to the controller chip. The current flow status signal may comprise an over-current protection signal or current mode control signals. One advantageous embodiment of the invention comprises a switch mode power supply integrated circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.