PMP9637

Automotive Boost Power Supply for Audio Applications Reference Design

PMP9637

Design files

Overview

The PMP9637 4-phase boost power supply enables high-efficiency boost dc/dc conversion of an 8.5V to 18V input Automotive battery voltage to 44V output at 17 Amperes in a compact form factor for Audio applications. The TPS40090 4-phase PWM controller is used with two (2) UCC27324D 4A dual FET drivers and CSD18534Q5A 60V NexFETs to deliver  748W output power in only 120mm x 70mm.

Features

• >95% Efficiency at 14VIN, 44Vout/7A.
• 120mmx70mm total power supply area
• 200mV pk-to-pk output voltage load transient response
• 10mV pk-pk output voltage 
• Smooth monotonic start up
• 4-phase interleaving enables lower input and ouput ripple current, faster load transient response, improved power handling capability, improved thermal performance, and higher reliability

  • >95% Efficiency at 14VIN, 44Vout/7A.
  • 120mmx70mm total power supply area
  • 200mV pk-to-pk output voltage load transient response
  • 10mV pk-pk output voltage
  • Smooth monotonic start up
  • 4-phase interleaving enables lower input and ouput ripple current, faster load transient response, improved power handling capability, improved thermal performance, and higher reliability

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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.

SLUUB00.PDF (1120 K)

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

SLURAR2A.PDF (162 K)

Detailed schematic diagram for design layout and components

SLURAR3A.PDF (102 K)

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

TIDRBK4.ZIP (114 K)

Files used for 3D models or 2D drawings of IC components

SLUC536.ZIP (157 K)

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

TIDRBK3.ZIP (98 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

AC/DC & DC/DC controllers (external FET)

TPS400904 Channel Multiphase Buck DC/DC Controller

Data sheet: PDF
Low-side drivers

UCC27324Non-inverting 4-A/4-A dual-channel low side gate driver

Data sheet: PDF | HTML
MOSFETs

CSD18534Q5A60-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 9.8 mOhm

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report PMP9637 Test Results Oct. 27, 2014

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