Power Solution for Automotive Audio Amplifiers


Design files


This reference design supports the supply for an audio amplifier, such as the TAS5414C-Q1 using the various DC/DC power switchers, LDOs, logic, clocks, and op amps. This reference design is also applicable in start/stop systems.

Modifying this reference design can also create a power supply for a radio head unit.

  • Wide input operating voltage from 4.5V to 52V
  • Fixed frequency current mode control
  • Internal slope compensation and an integrated low-side driver
  • Programmable close-loop start stop
  • Capable of external synchronization
  • Low current disable function

Output voltage options PMP2688.1
Vin (Min) (V) 6.5
Vin (Max) (V) 12
Vout (Nom) (V) 12
Iout (Max) (A) 10
Output Power (W) 120
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Boost- Multiphase
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDU139.PDF (631 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

SLUU755.PDF (314 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDR131.PDF (93 K)

Detailed schematic diagram for design layout and components

TIDR132.PDF (24 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDC083.ZIP (141 K)

Design file that contains information on physical board layer of design PCB


Includes TI products in the design and potential alternatives.

Boost controllers (external switch)

TPS402104.5~52V Wide Input Range Boost/SEPIC/Flyback DC-DC Controller

Data sheet: PDF | HTML
Boost controllers (external switch)

TPS40210-Q14.5-V to 52-V wide input range current mode boost controller with 700-mV reference voltage

Data sheet: PDF | HTML
General-purpose op amps

LM2904-Q1Automotive-grade, dual, 26-V, 700-kHz operational amplifier

Data sheet: PDF | HTML
Inverting buffers & drivers

SN74AHC1G04-Q1Automotive single 2-V to 5.5-V inverter

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report PMP2688 Test Results Sep. 05, 2013
Test report PMP2688 Board Photo Nov. 11, 2011

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