Integrated EMI filter circuit with ESD protection and incorporating capacitors
US8879223B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2013 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | Apr 6, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D84/204
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An integrated electromagnetic interference (EMI) filter circuit with electrostatic discharge (ESD) protection and incorporating capacitors is provided. At least one passive element, i.e. resistor or inductor is connected between an input terminal and an output terminal. A first capacitor is connected between ground and the input terminal, and a second capacitor is connected between ground and the output terminal. A first diode and a second diode are connected in parallel to the first capacitor and the second capacitor. One or multiple parallel capacitors are connected in parallel to the passive element and between the input terminal and the output terminal for frequency compensation by employing the novel EMI LPF circuit, it is extraordinarily advantageous of enhancing its rejection band attenuation and meanwhile maintaining high cut-off frequency while implementation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.