Showing posts with label 2x100W. Show all posts
Showing posts with label 2x100W. Show all posts

9/30/2014

Controller class-D audio amplifier

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General Description:
The TDA8929T is the controller of a two-chip set for a high efficiency class-D audio power amplifier system. The system is divided into two chips:
• TDA8929T; the analog controller chip in a SO24 package
• TDA8926J/ST/TH or TDA8927J/ST/TH; a digital power stage in a DBS17P, RDBS17P or HSOP24 power package.
With this chip set a compact 2 × 50 W or 2 × 100 W audio amplifier system can be built, operating with high efficiency and very low dissipation. No heatsink is required, or depending on supply voltage and load, a very small one. The system operates over a wide supply voltage range from ±15 up to ±30 V and consumes a very low quiescent current.

Circuit Diagram:
Controller class-D audio amplifier

Datasheet for TDA8929T: Download
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8/15/2014

100+100W STEREO POWER AMPLIFIER

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Features


  • 80+80W OUTPUT POWER @ RL = 4/8 Ω,THD = 0.5%
  • 100+100W OUTPUT POWER @ RL = 4/8 Ω,THD = 10%
  • HIGH DYNAMIC PREAMPLIFIER INPUT STAGES 
  • EXTERNAL PROGRAMMABLE FEEDBACK TYPE COMPRESSORS 
  • AC COUPLED INPUT TO CLASS AB BRIDGE OUTPUT AMPLIFIER 
  • PRECISION RECTIFIERS TO DRIVE THE DIGITAL CONVERTER
  • ON-OFF SEQUENCE/ TIMER WITH MUTE AND STANDBY
  • PROPORTIONAL OVER POWER OUTPUT CURRENT TO LIMIT THE DIGITAL CONVERTER
  • ABSOLUTE POWER BRIDGE OUTPUT TRANSISTOR POWER PROTECTION 
  • ABSOLUTE OUTPUT CURRENT LIMIT
  • INTEGRATED THERMAL PROTECTION
  • POWER SUPPLY OVER VOLTAGE PROTECTION 
  • FLEXIWATT POWER PACKAGE WITH 27 PIN


Circuit Diagram:
100+100W STEREO POWER AMPLIFIER

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7/18/2014

2x100W stereo audio amplifier TA2022

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General Desciption:

The TA2022 is a 90W (4 Ω ) continuous average per channel Class-T Digital Audio  Power Amplifier IC using Tripath’s pr oprietary Digital Power Processing (DPPT M ) technology. Class-T amplifiers offer bot h the audio fidelity of Class-AB and the power efficiency of Class-D amplifiers.

FEATURES:
  • Class-T architecture 
  • High Power 
  • 100W @ 4Ω, 1.0% THD+N 
  • 90W @ 4Ω, 0.1% THD+N
  • 60W @ 8Ω, 0.1% THD+N 
  • “Audiophile” Sound Quality 
  • 0.015% THD+N @ 70W 4Ω
  • 0.015% THD+N @ 45W 8Ω
  • 0.10% IHF-IM @ 25W 4Ω
  • High Efficiency 
  • 92% @ 88W 8Ω
  • 87% @ 125W 4Ω
  • Dynamic Range = 102 dB 
  • Mute Input 
  • Integrated Gate Drive Supply 
  • Over-current protection 
  • Over and under-voltage protection 
  • Single ended outputs 
  • Outputs can be operated in bridged mode 
  • 32-pin SSIP package 
Circuit Diagram:
2 x 100W stereo audio amplifier TA2022

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5/11/2014

TDA8920 2x100W class-D power amplifier

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Description of TDA8920:

The TDA8920B is a high efficiency class-D audio power amplifier with very low dissipation. The typical output power is 2 × 100 W. The device is available in the HSOP24 power package and in the DBS23P through-hole power package. The amplifier operates over a wide supply voltage range from ±12.5 V to ±30 V (±32 V non operating) and consumes a very low quiescent current. The TDA8920B is a two channel audio power amplifier using class-D technology. The audio input signal is converted into a digital pulse width modulated signal via an analog input stage and Pulse Width Modulation (PWM) modulator. To enable the output power transistors to be driven, this digital PWM signal is applied to a control and handshake block and driver circuits for both the high side and low side. In this way a level shift is performed from the low power digital PWM signal (at logic levels) to a high power PWM signal which switches between the main supply lines. A 2nd-order low-pass filter converts the PWM signal to an analog audio signal across the loudspeakers. The TDA8920B one-chip class-D amplifier contains high power D-MOS switches, drivers, timing and handshaking between the power switches and some control logic. For protection a temperature sensor and a maximum current detector are built-in. The two audio channels of the TDA8920B contain two PWM modulators, two analog feedback loops and two differential input stages. It also contains circuits common to both channels such as the oscillator, all reference sources, the mode functionality and a digital timing manager.

Features TDA8920:
  • Zero dead time switching 
  • Advanced current protection: output current limiting 
  • Smooth start-up: no pop noise due to DC offset 
  • High efficiency 
  • Operating supply voltage from ±12.5 V to ±30 V 
  • Low quiescent current 
  • Usable as a stereo Single-Ended (SE) amplifier or as a mono amplifier in Bridge-Tied Load (BTL) 
  • Fixed gain of 30 dB in Single-Ended (SE) and 36 dB in Bridge-Tied Load (BTL) 
  • High output power 
  • High supply voltage ripple rejection 
  • Internal switching frequency can be overruled by an external clock 
  • Full short-circuit proof across load and to supply lines 
  • Thermally protected

Applications:
  • Television sets 
  • Home-sound sets 
  • Multimedia systems 
  • All mains fed audio systems 
  • Car audio (boosters)

Circuit diagram TDA8920:
TDA8920 2x100W class-D power amplifier
   

Datasheet for TDA8920Download
Where you can buy: Aliexpress
Where you can buy: DealExtreme
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