Highly Efficient and Compact 100W Automotive Amplifier Reference Design with Boost Converter

(ACTIVE) PMP9484

Description & Features

Technical Documents

Support & Training

Order Now


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


Description

PMP9484 is a 100W highly efficient and compact automotive amplifier reference design which can be used in 50W +50W stereo or 100W woofer applications.  The design is broadly divided into three main stages:
1.) Highly efficient single-phase synchronous boost converter using the LM5122 controller IC.  The design accepts an input voltage of 7.5Vin to 20Vin (12Vin nominal) and provides an output of 24V capable of supplying 5A of continuous current to the load.  The peak efficiency acheived is 98 percent.
2.) 50W+ 50W stereo audio amplifier with TPA3116D2 Class D device
3.) Very low cost stereo input to woofer bass input conversion

Features
  • Synchronous rectification in boost for very high efficiency
  • Ultra-low footprint area for LM5122
  • Actual power stage combo with highly efficient class D amplifier
  • Single speaker (woofer), dual speaker (stereo) support in the design
  • Low Vin support for automotive application

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


  




Parametrics
 PMP9484.1
(Output Voltage 1)
Vin (Min) (V)6.5
Vin (Max) (V)20
Vout (Nom) (V)24
Iout (Max) (A)5
Output Power (W)120
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologyBoost- Synchronous

TI Devices (8)

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
CSD18501Q5A  40V N-Channel NexFET Power MOSFETs, CSD18501Q5A  Power MOSFET  Sample & Buy View Design Kits & Evaluation Modules
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
LM5122  3-65V Wide Vin, Current Mode Synchronous Boost Controller with Multiphase Capability  Step-Up (Boost)  Sample & Buy View Design Kits & Evaluation Modules
TAS5404-Q1  26-W Analog Single-Ended Input 4-Ch Class-D Amp w/Load Dump Protection and I2C Diagnostics  Mid-Power Audio Amplifiers (10-50W)  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
TPA3116D2-Q1  2-Ch, 50-W Analog Input Class-D Audio Amplifier  Mid-Power Audio Amplifiers (10-50W)  Sample & Buy View Design Kits & Evaluation Modules
TPA3118D2-Q1  2-Ch, 30-W Analog Input Class-D Audio Amplifier  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 3804 29 Sep 2014 128
Design files (3)
Title Abstract Type Size (KB) Date Views
ZIP 375 29 Sep 2014 115
PDF 32 29 Sep 2014 49
PDF 698 29 Sep 2014 132


Support & Training

TI E2E Community

As a member of  myTI you can join the TI E2E™ Community  where you can ask questions, share ideas and collaborate with fellow engineers and TI experts

Content is provided "AS IS" by the respective TI and Community contributors and does not constitute TI specifications. See  Terms of use.

Engage in the Community

Blogs

Wikis

Visit the TI Wiki