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TIDA-01553

Automotive Off-battery VCM Supporting 2.5-V Cold Crank Profile Reference Design

Design files

TIDA-01553

Design files

Overview

This reference design is a high-current, wide input voltage range circuit that can handle engine cold crank profile down to 2.5V. The dual-output voltages are 5V and 3.3V that support up to 10A for each output. The design is suitable for an automotive off-battery infotainment application that needs to support a very stringent starting profile down to 2.5V.

Features
  • Wide input voltage range of 2.5V to 40V
  • Dual high-current synchronous outputs: 5V, up to 10A; 3.3V, up to 10A
  • Continuous operation during engine crank transient down to 2.5V
  • Reverse battery protection with zero IQ smart diode controller
  • Minimized AM radio band interference
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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 Design guide — TIDA-01553
TIDUDR1.PDF (949 KB)

Reference design overview and verified performance test data

download Assembly drawing — TIDA-01553
TIDRVJ4.PDF (258 KB)

Detailed overview of design layout for component placement

download Bill of materials (BOM) — TIDA-01553
TIDRVJ3.PDF (63 KB)

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

download CAD/CAE symbol — TIDA-01553
TIDRVJ6.ZIP (1355 KB)

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

download Gerber file — TIDA-01553
TIDCEH4.ZIP (1631 KB)

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

download PCB layout — TIDA-01553
TIDRVJ5.PDF (1402 KB)

PCB layer plot file used for generating PCB design layout

download Schematic — TIDA-01553
TIDRVJ2.PDF (323 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

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

LM5140-Q1 — Wide Vin Dual 2.2MHz low Iq Synchronous Buck Controller

Data sheet: PDF | HTML
Ideal diode/ORing controllers

LM74700-Q1 — 3.2-V to 65-V, 80-uA IQ automotive ideal diode controller

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

LM25122-Q1 — 3-42-V wide VIN, synchronous boost controller with multiphase capability, AEC-Q100 qualified

Data sheet: PDF | HTML

Start development

Software

Calculation tool

LM5140ADESIGN-CALC — LM5140 Dual Synchronous Buck Controller Design Tool - Quick Start Calculator

Welcome to the LM5140-1 quickstart design tool. This standalone tool facilitates and assists the power supply engineer with the design of a DC/DC synchronous buck converter based on the LM5140-Q1 current-mode controller. As such, the user can expeditiously arrive at an optimized design to meet (...)

Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC controllers (external FET)
LM5140-Q1 — Wide Vin Dual 2.2MHz low Iq Synchronous Buck Controller
Hardware development
Reference design
PMP15032 — Automotive High Current, Wide VIN Synchronous Buck Controller Reference Design Featuring LM5140-Q1 TIDA-01534 — Automotive Off-battery Dual-phase Boost Converter Reference Design TIDA-01553 — Automotive Off-battery VCM Supporting 2.5-V Cold Crank Profile Reference Design
Evaluation board
LM5140RWGEVM — LM5140RWGEVM Dual Synchronous Buck Converter EVM LM5140RWGEVMHD — LM5140QRWGRQ1 Dual Synchronous Buck Converter High Density Evaluation Module (EVM)
Download options

LM5140ADESIGN-CALC — LM5140 Dual Synchronous Buck Controller Design Tool - Quick Start Calculator

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Version: 01.00.00.0D
Release date: Oct 31, 2019
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LM5140 Dual Synchronous Buck Controller Design Tool - Quick Start Calculator (zip)  — 2018 K

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Products
AC/DC & DC/DC controllers (external FET)
LM5140-Q1 — Wide Vin Dual 2.2MHz low Iq Synchronous Buck Controller
Hardware development
Reference design
PMP15032 — Automotive High Current, Wide VIN Synchronous Buck Controller Reference Design Featuring LM5140-Q1 TIDA-01534 — Automotive Off-battery Dual-phase Boost Converter Reference Design TIDA-01553 — Automotive Off-battery VCM Supporting 2.5-V Cold Crank Profile Reference Design
Evaluation board
LM5140RWGEVM — LM5140RWGEVM Dual Synchronous Buck Converter EVM LM5140RWGEVMHD — LM5140QRWGRQ1 Dual Synchronous Buck Converter High Density Evaluation Module (EVM)

Release Information

The design resource accessed as www.ti.com/lit/zip/snvc191 or www.ti.com/lit/xx/snvc191d/snvc191d.zip has been migrated to a new user experience at www.ti.com/tool/download/SNVC191. Please update any bookmarks accordingly.

Technical documentation

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Type Title Date
* Design guide Automotive Off-Battery VCM, Supporting 2.5-V Cold Crank Profile Reference Design Jan 30, 2018

Related design resources

Hardware development

EVALUATION BOARD
AUTOCRANKSIM-EVM — Simulator for automotive cranking pulses evaluation module

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