发明授权
- 专利标题： Electronic system with regulator, and method
- 专利标题（中）： 带调节器的电子系统及方法
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申请号： US24434申请日： 1998-02-17
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公开(公告)号： US5966004A公开(公告)日： 1999-10-12
- 发明人: Petr Kadanka
- 申请人： Petr Kadanka
- 申请人地址： IL Schaumburg
- 专利权人： Motorola, Inc.
- 当前专利权人： Motorola, Inc.
- 当前专利权人地址： IL Schaumburg
- 主分类号： G05F1/563
- IPC分类号： G05F1/563 ; G05F1/618
摘要：
In an electronic system (100), a regulator (200) couples a supply device (110) to a consuming device (120) through a series switch (210) and provides output current I.sub.OUT. A shunt switch (220) is provided across the output. Fast changes of I.sub.OUT due to switching on and off the consuming device (120) are accommodated by the regulator (200). The regulator (200) has a voltage divider (250, 260) to measure V.sub.OUT. Operational amplifiers (230 and 240') control transistors (210, 220) with different switching thresholds, They compare a measurement voltage V.sub.M derived from V.sub.OUT to a reference voltage V.sub.REF. When the consuming device (120) is switched off, the first amplifier (230) makes the series transistor (210) non-conductive; and then the second amplifier (240') makes the shunt transistor (220) conductive for a short time. Capacitance at the output node (205) is substantially discharged. After overshooting, the voltage V.sub.OUT returns to its previous value. Unwanted undershooting of V.sub.OUT is substantially avoided.
公开/授权文献
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