TIDA-00744 Reference Design

Texas Instruments

50W System-Level Power Reference Design for Automotive Infotainment Systems

Description

TIDA-00744 is a 50-W system-level SMPS design for mid-power automotive infotainment systems. 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: Protection: Reverse battery protection through efficient smart diode and automotive transient protections through TVSsEMI filter: A differential filter for conducted EMI suppressionPreboost: Efficient low-cost nonsynchronous preboost design for 50-W applications. The output is maintained at 10 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 10-V boost output).Dual buck controller: 2.2-MHz switching for AM band avoidance: as well as small-size solution. Supports two outputs; 5 V at 5 A and 3.3 V at 5 A. The syncout of controller is used to sync boost at F/9 frequency.

Features
  • Lossless bypass operation: avoids loss in boost diodeWide Vin support for automotive applicationCycle-by-cycle current limit and optional hiccup-mode overload protectionLow-cost solution and high-efficiency solution for 50-W applicationSmart diode for highly efficient reverse battery protection
Applications
  • Process analytics
Product Categories
  • Power management

End Equipment Reference Diagrams

Parts

Part Number Name Companion Part
CD74HC4017 CD74HC4017 Buy Datasheet
LM3481-Q1 LM3481-Q1 Buy Datasheet

Bill Of Materials

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Test Data

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Other Documents

Title Updated Type Size (KB)
TIDA-00744 Altium 21 Mar 2016 ZIP 1537
TIDA-00744 Gerber 21 Mar 2016 ZIP 640
TIDA-00744 BOM 21 Mar 2016 PDF 28
TIDA-00744 Block Diagram 21 Mar 2016 PDF 617
TIDA-00744 Schematic 21 Mar 2016 PDF 450