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PMP31210

700-W, four-phase buck converter reference design with extended input voltage range

Design files

PMP31210

Design files

Overview

This reference design is a 700-W buck converter using the LM5143A-Q1 device. Due to low dead times, strong drivers and the ability to adjust the rising and falling edges individually, the resulting efficiency is 98%. Board area is minimized because of reduced loss. It is 150 mm × 125 mm with a low profile of 12 mm or 15 mm, depending on the inductor selected. Ample headroom for increased output power is available by using forced cooling or a heat sink mounted to a chassis. Using additional cooling options, the output current can be increased to 60-A continuous and higher. The interleaved operation results in low root mean square (RMS) stress at the input capacitor and reduced ripple at the input and the output. A generic two stage EMI input filter is provided.

Features
  • Power supply delivers up to 700-W continuous and up to 1-kW peak output power.
  • The interleaved four-phase buck topology provides ripple rejection.
  • The extended input range (compared to PMP31202) makes the design an excellent choice for truck applications.
  • This reference design was built and tested in a lab.
Output voltage options PMP31210.1
Vin (Min) (V) 18
Vin (Max) (V) 58
Vout (Nom) (V) 13.8
Iout (Max) (A) 50
Output Power (W) 690
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck- Multiphase^Buck- Synchronous
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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.

download Test report — PMP31210
PDF | HTML
TIDT319.PDF (1659 K)

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

download Schematic — PMP31210
TIDMB83.PDF (383 K)

Detailed schematic diagram for design layout and components

download Bill of materials (BOM) — PMP31210
TIDMB84.PDF (240 K)

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

download Assembly drawing — PMP31210
TIDMB85.PDF (336 K)

Detailed overview of design layout for component placement

download CAD/CAE symbol — PMP31210
TIDMB86.ZIP (1391 K)

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

download Gerber file — PMP31210
TIDCGC4.ZIP (239 K)

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

download PCB layout — PMP31210
TIDMB71.PDF (1921 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)

LM5143 — 3.5-V to 65-V, dual-output, stackable, synchronous buck DC/DC controller with ultra-low IQ

Data sheet: PDF | HTML
AC/DC & DC/DC controllers (external FET)

LM5143-Q1 — 3.5-V to 65-V low Iq, dual, 2-phase synchronous buck DC-DC controller

Data sheet: PDF | HTML
AC/DC & DC/DC controllers (external FET)

LM5143A-Q1 — Automotive, 3.5-V to 65-V low-IQ, dual output, stackable synchronous buck DC-DC controller

Data sheet: PDF | HTML

Start development

Software

Calculation tool

LM5143DESIGN-CALC — LM5143-Q1 Controller Quickstart Design Tool

This stand-alone tool facilitates and assists with the design of a DC/DC buck regulator based on the LM5143-Q1 synchronous buck DC/DC controller with low IQ. The user can expeditiously arrive at an optimized design to meet the application requirements.

Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC controllers (external FET)
LM25143 — 3.5-V to 42-V, dual-output, stackable, synchronous buck DC/DC controller with ultra-low IQ LM25143-Q1 — Automotive, 3.5-V to 42-V low-Iq, dual output, stackable synchronous buck DC-DC controller LM5143 — 3.5-V to 65-V, dual-output, stackable, synchronous buck DC/DC controller with ultra-low IQ LM5143-Q1 — 3.5-V to 65-V low Iq, dual, 2-phase synchronous buck DC-DC controller LM5143A-Q1 — Automotive, 3.5-V to 65-V low-IQ, dual output, stackable synchronous buck DC-DC controller
Hardware development
Evaluation board
LM5143-Q1EVM-2100 — Dual-channel automotive synchronous buck controller evaluation module
Software
Calculation tool
LM5143DESIGN-CALC — LM5143-Q1, LM5143A-Q1, LM5143, LM25143-Q1 and LM25143 controller quick start design tool
Download

LM5143DESIGN-CALC — LM5143-Q1 Controller Quickstart Design Tool

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Version: 01.00.00.0F
Release date: 09 May 2022
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LM5143-Q1 Controller Quickstart Design Tool (zip)  — 2035 K

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Products
AC/DC & DC/DC controllers (external FET)
LM25143 — 3.5-V to 42-V, dual-output, stackable, synchronous buck DC/DC controller with ultra-low IQ LM25143-Q1 — Automotive, 3.5-V to 42-V low-Iq, dual output, stackable synchronous buck DC-DC controller LM5143 — 3.5-V to 65-V, dual-output, stackable, synchronous buck DC/DC controller with ultra-low IQ LM5143-Q1 — 3.5-V to 65-V low Iq, dual, 2-phase synchronous buck DC-DC controller LM5143A-Q1 — Automotive, 3.5-V to 65-V low-IQ, dual output, stackable synchronous buck DC-DC controller
Hardware development
Evaluation board
LM5143-Q1EVM-2100 — Dual-channel automotive synchronous buck controller evaluation module
Software
Calculation tool
LM5143DESIGN-CALC — LM5143-Q1, LM5143A-Q1, LM5143, LM25143-Q1 and LM25143 controller quick start design tool

Technical documentation

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Type Title Date
Test report 4-Phase Buck 700-W Reference Design (Extended Input Voltage Range) PDF | HTML Dec. 17, 2022

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