Patent ID: 9703303
Date: 2017-07-11
CPC Classifications: G05F,H02M

Claim:
1. A voltage regulation system comprising: a voltage regulator comprising: a charge pump configured to output a voltage and a charging current, wherein the charging current is provided to a first electrode of the low voltage correction switch, and a second electrode of the low voltage correction switch is coupled to a control input of the regulator output switch; and a pump monitor coupled to the output of the enable circuit, the pump monitor is enabled in response to receipt of the activated enable signal and is disabled otherwise, the pump monitor is further coupled to an output voltage of the charge pump, and the pump monitor, when enabled, is configured to: wherein the enable circuit comprises a logic gate having a first input coupled to the output of the first comparator, a second input coupled to a refresh signal, and an output that provides the activated enable signal when either the activated control signal is output by the first comparator or the refresh signal is asserted, wherein the refresh signal is used to enable the pump monitor based on temperature or elapsed time.