Audio Boom Box/Portable Speaker Reference Design with Efficient Boost Converter.

(ACTIVE) PMP9491

Description & Features

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Description

PMP9491 is a 30W highly efficient and compact Portable Speaker/Audio Boom Box reference Design which can be used in 15W +15W Stereo or 30W Woofer Applications. The Power Source for the Design is 1 or 2 Li ion in Series . The design is broadly divided into three main stages:

  1. Highly efficient Single-Phase Non Synchronous Boost Converter using the LM3481 controller IC.  The design accepts an input voltage of 3.3Vin to 9Vin and provides an output of 12 V capable of supplying 2.5A of continuous current to the load.  The peak efficency acheived is 95 percent .
  2. 15W+15W Stereo Audio Amplifier with TPA3118D2 Class D device.
  3. Very Low Cost Stereo Inputs to Woofer Bass Input Conversion.
  4. Battery Charger bq24133 , 2.5A Synchronous Switch-Mode Li-Ion/Li-Polymer Stand-Alone Battery Charger with Integrated MOSFETs and Power Path Selector.

Features
  • Low Cost Non Synchronous Boost for Audio Boom Box application.
  • Ultra Low Footprint Area for LM3481 Actual Power Stage
  • Single Speaker (Woofer), Dual Speaker(Stereo) Support in the design
  • Low Vin Support for Single as well as Dual Li ion Battery support
  • 100-kHz to 1-MHz Adjustable / Synchronizable Clock Frequency and limits the inrush current at start-up.
  • Battery Charger with Dynamic Power Path management


 


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TI Devices (10)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
BQ24133  Synchronous Switch-Mode Li-Ion and Li-Polymer Stand-Alone Battery Charger  Battery Management Products  Sample & Buy View Design Kits & Evaluation Modules
CSD16321Q5  N-Channel NexFET™ Power MOSFET  Power MOSFET  Sample & Buy View Design Kits & Evaluation Modules
CSD17313Q2  30V N Channel NexFET™ Power MOSFET  Power MOSFET  Sample & Buy View Design Kits & Evaluation Modules
CSD25310Q2  20-V P-Channel NexFET Power MOSFET, CSD25310Q2  Power MOSFET  Sample & Buy Not Available
LM324  Quadruple Operational Amplifier  Operational Amplifiers (Op Amps)  Sample & Buy View Design Kits & Evaluation Modules
LM324-MIL  Quadruple Operational Amplifier  Operational Amplifiers (Op Amps)  Sample & Buy View Design Kits & Evaluation Modules
LM3481  High-Efficiency Controller for Boost, SEPIC and Flyback DC-DC Converters  Step-Up (Boost)  Sample & Buy View Design Kits & Evaluation Modules
TPA3116D2  50-W Stereo (BTL) Class-D Audio Amp w/ SpeakerGuard™  Mid-Power Audio Amplifiers (10-50W)  Sample & Buy View Design Kits & Evaluation Modules
TPA3118D2  30W, 2 Ch, 4.5-26V supply, Stereo Class D amplifier with Multiple Switching Frequencies  Mid-Power Audio Amplifiers (10-50W)  Sample & Buy View Design Kits & Evaluation Modules
TPA3130D2  15W Filter-Free Class D Stereo Amplifier with AM Avoidance  Mid-Power Audio Amplifiers (10-50W)  Sample & Buy View Design Kits & Evaluation Modules

Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views
PDF 4694 26 Feb 2015 484
Design files (3)
Title Abstract Type Size (KB) Date Views
ZIP 322 26 Feb 2015 515
PDF 24 26 Feb 2015 168
PDF 148 26 Feb 2015 819


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