PMP10749

100W System-Level Power Reference Design for Automotive Infotainment System

PMP10749

Design files

Overview

PMP10749 is a 100-W system-level SMPS design for a higher-power automotive infotainment system. The design has protections, such as load dump through TVS (ISO pulse testing), as well as reverse voltage (innovative smart diode with very low Iq) protection. Furthermore, all the controllers (boost and dual bucks) are in SYNC for EMI-optimized design.


The design is divided into four major blocks:

  1. Protection: Reverse battery protection through efficient smart diode and automotive transient protections through TVS.
  2. EMI filter: 14-A common modes choke at front end with a differential filter for conducted EMI suppression.
  3. Preboost: Highly efficient synchronous preboost design for 100-W application. The output is maintained at 10 V and when Vin > Vout , the output follows the input and true bypass operation is achieved.
  4. Dual buck controller: 2.2-MHz switching for AM band avoidance, as well as small size solution. Supports two outputs: 5 V at 10 A, as well as 3.3 V at 10 A. The syncout of controller is used to sync boost at F/10 frequency.

 

Features
  • 2.2-MHz switching for SYNC buck controller – avoid AM band + smaller size
  • Wide Vin support for automotive application
  • Cycle-by-cycle current limit and optional hiccup-mode overload protection
  • Low-cost and high-efficiency solution for 100-W application
  • Smart diode for highly efficient reverse battery protection
Output voltage options PMP10749.1 PMP10749.2 PMP10749.3
Vin (Min) (V) 4 10 10
Vin (Max) (V) 32 32 32
Vout (Nom) (V) 10 3.3 3.3
Iout (Max) (A) 10 10 10
Output Power (W) 100 33 33
Isolated/Non-Isolated Non-Isolated Non-Isolated Non-Isolated
Input Type DC DC DC
Topology Boost- Synchronous Buck- Synchronous 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.

TIDUBN1.PDF (6772 K)

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

TIDRKU4.PDF (495 K)

Detailed schematic diagram for design layout and components

TIDRKU5.PDF (611 K)

Detailed schematic diagram for design layout and components

TIDRKU6.PDF (25 K)

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

TIDRKU7.ZIP (1778 K)

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

TIDCBX9.ZIP (454 K)

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

Products

Includes TI products in the design and potential alternatives.

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

LM5122-Q1Automotive, 3-V to 65-V wide VIN, current mode synchronous boost controller with multiphase

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

LM5140-Q1Wide Vin Dual 2.2MHz low Iq Synchronous Buck Controller

Data sheet: PDF | HTML
Counters

CD74HC4017High Speed CMOS Logic Decade Counter/Divider with 10 Decoded Outputs

Data sheet: PDF
Ideal diode/ORing controllers

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

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP10749 Test Results Mar. 21, 2016

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