Method of Automatic Mode Change in Switching Regulators

摘要

A switching regulator with an output high threshold voltage setting and an output low threshold voltage setting that permits a plurality of different operating modes to be established. Combined with these two threshold voltages is the ability to adjust both threshold voltages over the full range of the regulator output voltage, which yields switching regulator modes of forced normal operation, automatic where the operating mode is dependent upon output current and forced sleep mode.

主权项

1. A method for mode change, comprising:
a) creating two threshold voltages at an output of a switching regulator, comprising a high threshold voltage value (Vhigh) and a low threshold voltage value (Vlow) in an output voltage range of a minimum voltage (Vmin) to a maximum voltage (Vmax); b) adjusting the value of the two threshold voltages; and c) operating automatically said regulator in modes defined by said threshold voltage values.