发明授权
US06175224B1 Regulator circuit having a bandgap generator coupled to a voltage sensor, and method
失效
具有耦合到电压传感器的带隙发生器的调节器电路及方法
- 专利标题： Regulator circuit having a bandgap generator coupled to a voltage sensor, and method
- 专利标题（中）： 具有耦合到电压传感器的带隙发生器的调节器电路及方法
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申请号： US09106934申请日： 1998-06-29
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公开(公告)号： US06175224B1公开(公告)日： 2001-01-16
- 发明人: Petr Kadanka
- 申请人： Petr Kadanka
- 主分类号： G05F140
- IPC分类号： G05F140
摘要：
A regulator (200) has a pass transistor (250) for transferring a voltage from an input (202) to an output (205). A voltage sensor (231) at the output (205) carries a PTAT current (IA) A generator with diode or transistor chains (271, 272) derives a voltage VRES from serially coupled base-emitter path of transistors (381-386) having different current densities. The generator (271, 272) and a transistor pair (273) form a bandgap reference circuit. Each chain (271, 272) has transistors alternatively of a first type (pnp) and second type (npn). The value ratio (R4/R3) of resistances (240, 230) in the voltage sensor (231) can be chosen such, that the noise components of the voltage VOUT at the output (205) is low.
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