[go: up one dir, main page]

Liu et al., 2012 - Google Patents

A 100 W 5.1-channel digital class-D audio amplifier with single-chip design

Liu et al., 2012

Document ID
4341665342628299335
Author
Liu J
Chien S
Kuo T
Publication year
Publication venue
IEEE journal of solid-state circuits

External Links

Snippet

A 100 W, 5.1-channel, single-chip, digital-input class-D audio amplifier with a low-voltage (LV) digital circuit and high-voltage (HV) switching power stage is designed for moderate- performance and cost-effective speaker systems. The LV portion, including multi-channel …
Continue reading at ieeexplore.ieee.org (other versions)

Classifications

    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217Class D power amplifiers; Switching amplifiers
    • H03F3/2173Class D power amplifiers; Switching amplifiers of the bridge type
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217Class D power amplifiers; Switching amplifiers
    • H03F3/2175Class D power amplifiers; Switching amplifiers using analogue-digital or digital-analogue conversion
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/211Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0211Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
    • H03F1/0216Continuous control
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F2200/00Indexing scheme relating to amplifiers
    • H03F2200/331Sigma delta modulation being used in an amplifying circuit
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F2200/00Indexing scheme relating to amplifiers
    • H03F2200/03Indexing scheme relating to amplifiers the amplifier being designed for audio applications
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/68Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00Conversion of analogue values to or from differential modulation
    • H03M3/30Delta-sigma modulation
    • H03M3/39Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66Digital/analogue converters
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M3/00Conversion of dc power input into dc power output
    • H02M3/02Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M1/00Details of apparatus for conversion

Similar Documents

Publication Publication Date Title
Liu et al. A 100 W 5.1-channel digital class-D audio amplifier with single-chip design
US10008994B2 (en) Audio amplifier system
US7301490B2 (en) Sigma-delta modulated power supply
US7262658B2 (en) Class-D amplifier system
US7750731B2 (en) PWM loop filter with minimum aliasing error
US8362832B2 (en) Half-bridge three-level PWM amplifier and audio processing apparatus including the same
EP1985013A2 (en) Systems and methods for improving performance in a digital amplifier by adding an ultrasonic signal to an input audio signal
US20060044057A1 (en) Class-D amplifier having high order loop filtering
US11296685B2 (en) PWM modulator having quantizer calibratable for multi-non-ideal gain-affecting characteristics
Pergushev et al. Signal distortion decreasing in envelope tracking power amplifiers
US20170250654A1 (en) Dynamic dead time management
WO2015053714A1 (en) A method of generating a pulse width modulation (pwm) signal for an analog amplifier, and a related pulse width modulator
CN101557202B (en) High power D-type power amplifier
US6734725B2 (en) Power amplifier
Kang et al. A review of audio class D amplifiers
Lokin et al. EMI reduction in class-D amplifiers by actively reducing PWM ripple
CN100424994C (en) Attenuation control system and method for digital power converter
Kuo et al. A 2.4 mA quiescent current, 1 W output power class-D audio amplifier with feed-forward PWM-intermodulated-distortion reduction
US7170340B1 (en) Apparatus and method for a class D audio power amplifier with a higher-order sigma-delta topology
Cyue et al. A Low-EMI, High-DR Class-D Audio Amplifier With Double-Sided Voltage-Boosting Modulation
Adrian et al. A Randomized Modulation scheme for filterless digital class D audio amplifiers
CN209881739U (en) PWM power amplifier capable of reducing phase distortion at modulation stage
Saponara et al. Switching-based topologies for high-efficiency audio amplifiers
Yu et al. An FPGA-based digital class-D amplifier with power supply error correction
US7161519B2 (en) PWM modulation circuit and class D amplifier using such PWM modulation circuit