Reducing kickback current to power supply during charge pump mode transitions

• Main Authors: NGUYEN THUAN L, SHEN DAN, SATOSKAR ANIRUDDHA, ALLEN DANIEL JOHN, BRENNAN AARON, ZHANG LINGLI, THANDRI BHARATH KUMAR
• Format: Patent
• Language: English
• Published: 24.02.2016
• Subjects: AMPLIFIERS; 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; BASIC ELECTRONIC CIRCUITRY; 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

Kickback current from a charge pump to a power management integrated circuit (PMIC) may be reduced by dissipating charge from fly and hold capacitors during mode transitions. A switch may be placed in series between the charge pump and the PMIC to disconnect the charge pump and prevent kickback curr...