Power Reference Design for 450W Automotive Audio Amplifier PMP7837 (ACTIVE)

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Key Document

Description

The PMP7837 is a 4-phase synchronous boost converter that can take a 6-17V input and put out 24V at 450W. It is used for powering up to eight 50W automotive trunk amplifiers. The 4-phase synchronous design with 450kHz switching frequency per phase results in a compact and efficient circuit well suited for such applications.

Features
  • Mininum 6V input voltage supports US automotive cold cranking requirement
  • 96% peak efficiency at 12V input
  • 1.8MHz effective switching frequency
  • Ripple cancellation as a result of 4-phase design
  • Synchronous operation saves power and eases thermal design.

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Design Files

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Parametrics
 PMP7837.1
(Output Voltage 1)
Vin (Min) (V)6
Vin (Max) (V)17
Vout (Nom) (V)24
Iout (Max) (A)15
Output Power (W)360
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologyBoost- Multiphase

TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD18501Q5A  40V, N ch NexFET MOSFET™, single SON5x6, 3.2mOhm  MOSFETs  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
LM5122-Q1  Automotive Grade, 3-65V Wide Vin, Current Mode Synchronous Boost Controller with Multiphase Capabili  Step-up (boost)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD18501Q5A VSONP (DQJ)| 8 Download Download
LM5122 Download Download
Download -
LM5122-Q1 Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 541 14 Apr 2013
Design files (3)
Title Type Size (KB) Date
PDF 392 24 Jan 2018
PDF 28 20 Feb 2014
ZIP 1087 18 Feb 2014

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