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1. WO2018148344 - CHARGE PUMP WITH CURRENT MODE OUTPUT POWER THROTTLING

Publication Number WO/2018/148344
Publication Date 16.08.2018
International Application No. PCT/US2018/017317
International Filing Date 08.02.2018
IPC
H03F 1/02 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
1Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
02Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
H02M 3/07 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3Conversion of dc power input into dc power output
02without intermediate conversion into ac
04by static converters
06using resistors or capacitors, e.g. potential divider
07using capacitors charged and discharged alternately by semiconductor devices with control electrode
H03F 3/217 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
3Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
20Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
21with semiconductor devices only
217Class D power amplifiers; Switching amplifiers
CPC
H02M 3/07
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3Conversion of dc power input into dc power output
02without intermediate conversion into ac
04by static converters
06using resistors or capacitors, e.g. potential divider
07using capacitors charged and discharged alternately by semiconductor devices with control electrode ; , e.g. charge pumps
H03F 1/0211
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
1Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
02Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
0205in transistor amplifiers
0211with control of the supply voltage or current
H03F 1/0227
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
1Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
02Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
0205in transistor amplifiers
0211with control of the supply voltage or current
0216Continuous control
0222by using a signal derived from the input signal
0227using supply converters
H03F 1/025
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
1Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
02Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
0205in transistor amplifiers
0211with control of the supply voltage or current
0244Stepped control
025by using a signal derived from the input signal
H03F 2200/03
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
2200Indexing scheme relating to amplifiers
03the amplifier being designed for audio applications
H03F 2200/471
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
2200Indexing scheme relating to amplifiers
471the voltage being sensed
Applicants
  • CIRRUS LOGIC INTERNATIONAL SEMICONDUCTOR, LTD. [GB]/[GB]
  • KING, Eric J. [US]/[US] (US)
Inventors
  • KING, Eric J.
  • MARCHAIS, Emmanuel
Agents
  • PREWITT, Brian K.
  • DEWAN, Raman N.
  • LALLY, Joseph P.
Priority Data
15/887,65702.02.2018US
62/457,48010.02.2017US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CHARGE PUMP WITH CURRENT MODE OUTPUT POWER THROTTLING
(FR) POMPE DE CHARGE À ÉTRANGLEMENT DE PUISSANCE DE SORTIE EN MODE COURANT
Abstract
(EN)
A system may include a charge pump configured to boost an input voltage of the charge pump to an output voltage greater than the input voltage, a current mode control loop for current mode control of a power amplifier powered by the output voltage of the charge pump, and a controller configured to, in a current-limiting mode of the controller, control an output power of the charge pump to ensure that an input current of the charge pump is maintained below a current limit, control the power amplifier by placing the power amplifier into a high-impedance mode during the current-limiting mode, and control state variables of a loop filter of the current mode control loop during the current-limiting mode.
(FR)
La présente invention concerne un système pouvant comprendre : une pompe de charge configurée de façon à amplifier une tension d'entrée de la pompe de charge à une tension de sortie supérieure à la tension d'entrée; une boucle de commande en mode courant servant à la commande en mode courant d'un amplificateur de puissance alimenté par la tension de sortie de la pompe de charge; et un dispositif de commande configuré de façon à commander, dans un mode de limitation de courant du dispositif de commande, une puissance de sortie de la pompe de charge afin de garantir le maintien d'un courant d'entrée de la pompe de charge au-dessous d'une limite de courant, à commander l'amplificateur de puissance en plaçant l'amplificateur de puissance dans un mode d'impédance élevée pendant le mode de limitation de courant, et à commander des variables d'état d'un filtre à boucle de la boucle de commande en mode courant pendant le mode de limitation de courant.
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