| 摘要 |
A switching regulator has a number of switchable power circuits, a number of inductive elements each being in series with a respective power circuit, and a number of resistors each being in series between a respective inductive element and a common node. A hysteretic comparator circuit has a first input coupled to the common node, and an output coupled to control the switchable power circuits. A number of sampling circuits each being coupled to provide a resistor voltage of a respective resistor as an input to the hysteretic comparator circuit is also provided. The hysteretic comparator circuit responds to each pair of resistor and common node voltages using the same hysteresis thresholds.
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