Amplifier
US7449948B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 2007 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | May 4, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/351
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
PWM signals having different polarities input from a +IN terminal and a −IN terminal are output to a pre-driver and a switching signal generation circuit. The pre-driver outputs to switches a gate signal for actuating a driver obtained from the input PWM signal. The switching signal generation circuit inputs a PWM signal and outputs switching signals. A switching circuit, on input of the switching signals, changes over switches so that the gate signal is output to a first P-channel MOS transistor and a first N-channel MOS transistor in case the PWM signal is input from the +IN side, and to a second P-channel MOS transistor and a second N-channel MOS transistor in case the PWM signal is input from the −IN side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.