发明名称 |
Power switching output stage with dead zone minimization and possibility of parallel synchronous connection |
摘要 |
A switching output power stage, including a power switching device for the supply line and a complementary power switching device for the ground rail driven in phase opposition by a pulse width modulated (PWM) drive signal, is provided with sensors detecting a substantial turn-off state of each of the two power switching devices and generating a pair of logic signals. A combinatory logic circuit combines the drive signal and the pair of logic signals and generates a pair of driving signals of opposite phase for the respective power switching devices. The switching to a turn-on state of any of the two power devices is enabled upon verifying a substantially attained turn-off state by the device complementary to the device commanded to turn-on, irrespective of the process spread and of changes of temperature load conditions and of configuration of a plurality of output stages of a multichannel amplifier.
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申请公布号 |
US6288605(B1) |
申请公布日期 |
2001.09.11 |
申请号 |
US20000484756 |
申请日期 |
2000.01.18 |
申请人 |
STMICROELECTRONICS S.R.L. |
发明人 |
BOTTI EDOARDO;RANIERI DANILO |
分类号 |
H03F3/21;H03F3/217;(IPC1-7):H03F3/38 |
主分类号 |
H03F3/21 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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