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52. 发明授权

US5926384A DC-dC converter having dynamic regulator with current sourcing and sinking means 失效
标题翻译： DC-dC转换器具有动态调节器，具有电流源和吸收装置
公开(公告)号：US5926384A
公开(公告)日：1999-07-20
申请号：US883624
申请日：1997-06-26
申请人： Thomas Andrew Jochum , Michael Mark Walters , Charles Edward Hawkes , Matthew Harris
发明人： Thomas Andrew Jochum , Michael Mark Walters , Charles Edward Hawkes , Matthew Harris
IPC分类号： G05F1/56 , H02M3/00 , H02M3/158 , H02M3/315
CPC分类号： H02M3/1584 , H02M2001/0045
摘要： An electronic circuit includes a dynamic regulator connected to a load and a dc-to-dc converter to reduce a need for bulky and expensive capacitors which would otherwise be required to suppress transients. The dynamic regulator comprises one or both of a current source circuit for actively sourcing current to the load during load current demand transients, and a current sink circuit for actively sinking current from the load during load current excess transients. The dynamic regulator preferably senses the load voltage, and tracks the load voltage. The current source circuit preferably includes a current source switch, and a current source controller for operating the current source switch responsive to the load voltage falling rapidly with respect to the tracked load voltage. In a similar fashion, the current sinking circuit may include a current sink switch, and a current sink controller for operating the current source switch responsive to the load voltage rising quickly above the tracked load voltage. In one embodiment, the load voltage tracking may be provided by a resistor-capacitor (R/C) network connected across the load. The R/C network may operate at a fast time constant for following load ripple, but at a slower time constant when sourcing or sinking current. The dynamic regulator is preferably a monolithic integrated circuit and may be either separate from or incorporated into the dc-to-dc converter.
摘要翻译：电子电路包括连接到负载和DC-DC转换器的动态调节器，以减少对庞大且昂贵的电容器的需要，否则这将需要抑制瞬变。动态调节器包括电流源电路中的一个或两个，用于在负载电流需求瞬变期间主动地将电流馈送到负载，以及电流吸收电路，用于在负载电流过度瞬变期间主动地从负载中吸收电流。动态调节器优选地感测负载电压，并且跟踪负载电压。电流源电路优选地包括电流源开关和电流源控制器，用于响应于相对于所跟踪的负载电压迅速下降的负载电压来操作电流源开关。以类似的方式，电流吸收电路可以包括电流吸收开关，以及电流吸收控制器，用于响应于高于跟踪的负载电压上升的负载电压来操作电流源开关。在一个实施例中，负载电压跟踪可由跨负载连接的电阻 - 电容（R / C）网络提供。 R / C网络可以以快速时间常数运行，以实现负载波动，但是在采集或吸收电流时，R / C网络的时间常数较慢。动态调节器优选地是单片集成电路，并且可以与dc-dc转换器分离或并入其中。

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