TIDA-00745

15-W System-Level Power Reference Design for Automotive Body Control Module

TIDA-00745

Design files

Overview

TIDA-00745 is a 14-W system-optimized (CISPR25 Class 4) SMPS design for an automotive body control module. All buck converters used in this design are switching at 2.1 MHz. 

The design is divided into four major blocks:

  1. EMI filter: Common mode and a differential filter for conducted EMI suppression
  2. Preboost (TPS40210-Q1): Efficient low-cost nonsynchronous preboost design for 15-W application. The output is maintained at 7.5 V and when Vin > Vout (programmed boost out), the output follows the input and bypass operation is achieved (through a conducting PFET when Vin > programmed 7.5-V boost output). 
  3. Buck converters (LM53603-Q1, LM53601-Q1, and LM26420-Q1): All converters switch at 2.1 MHz for AM band avoidance and having a small size solution. LM53603-Q1 and LM53601-Q1 are at the front end and both are synchronous wide Vin automotive buck converters with a high-level of integration. 
  4. Downstream LDOs with trackable output voltage

Features
  • Lossless bypass operation; avoid loss in boost diode
  • Wide Vin integrated front end DC/DC converters:  LM53603-Q1, LM53601-Q1
  • Pass CISPR 25 Class 3 FM radio band
  • ICs AEC-Q100 qualified
  • 3.5-V to 30-V (20-V OVP) wide Vin range; supports cold cranking conditions
Output voltage options TIDA-00745.1 TIDA-00745.2 TIDA-00745.3 TIDA-00745.4 TIDA-00745.5
Vin (Min) (V) 4 7.5 7.5 4.5 4.5
Vin (Max) (V) 32 32 32 5.5 5.5
Vout (Nom) (V) 7.5 5 6 3.3 1.32
Iout (Max) (A) 2 2 .65 1 1
Output Power (W) 15 10 3.9 3.3 1.32
Isolated/Non-Isolated Non-Isolated Non-Isolated Non-Isolated Non-Isolated Non-Isolated
Input Type DC DC DC DC DC
Topology Boost- Non Sync Buck- Synchronous Buck- Synchronous Buck- Synchronous Buck- Synchronous

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.

TIDUBN3.PDF (8368 K)

Reference design overview and verified performance test data

TIDRLC5.PDF (399 K)

Detailed schematic diagram for design layout and components

TIDRLC6.PDF (203 K)

Detailed schematic diagram for design layout and components

TIDRLC7.PDF (25 K)

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

TIDCC28.ZIP (495 K)

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

TIDRLC8.ZIP (1266 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Buck converters (integrated switch)

LM53601-Q1Automotive 3.5-V to 36-V, 1-A synchronous 2.1-MHz step-down converter

Data sheet document-pdfAcrobat PDF open-in-new HTML
Buck converters (integrated switch)

LM53603-Q13.5 to 36Vin, 3 Ampere Synchronous DC-DC Converter for Automotive Applications

Data sheet document-pdfAcrobat PDF open-in-new 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 document-pdfAcrobat PDF open-in-new HTML
Ideal diode/ORing controllers

LM74610-Q10.48-V to 42-V, zero IQ automotive ideal diode controller

Data sheet document-pdfAcrobat PDF open-in-new HTML
Linear & low-dropout (LDO) regulators

TPS7B4250-Q1Automotive 50-mA, off-battery (40-V), adjustable voltage-tracking low-dropout voltage regulator

Data sheet document-pdfAcrobat PDF open-in-new HTML
Linear & low-dropout (LDO) regulators

TPS7B4253-Q1Automotive 300-mA, off-battery (40-V), adjustable voltage-tracking low-dropout voltage regulator

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
* Design guide 15-W System-Level Power for Automotive Body Control Module Design Guide Mar. 23, 2016

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