CHARGE PUMP CIRCUIT WITH INTERNAL PRE-CHARGE CONFIGURATION

• Main Authors: HUNT-SCHROEDER, Eric D, Fifield, John A, Pontius, Dale E
• Format: Patent
• Language: English
• Published: 17.09.2020
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONTROLLING; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; PHYSICS; REGULATING; SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES

A charge pump circuit includes a charge pump configured to increase a voltage of an input signal to generate a voltage-boosted input signal, output the voltage-boosted input signal in response to a determination that the voltage-boosted input signal is greater than or equal to a threshold, and connect the charge pump to a supply voltage to pre-charge the charge pump in response to a determination that the voltage-boosted input signal is less than the threshold. The charge pump circuit includes bandgap reference generator configured to receive the voltage-boosted input signal and output, based on the voltage-boosted input signal, a voltage reference signal to a device that operates in accordance with the supply voltage.