IC manufacturers Texas Instruments

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Texas Instruments LM63615-Q1 | Demoboard PMP22030

Efficient, low-heat, CISPR 25 class 5-compliant power reference design for infotainment display

Overview

TopologyBuck Converter
Input voltage8-18 V
Switching frequency250-2200 kHz
Output 15 V / 1.5 A
IC revisionE1

Description

This reference design is focused on the power tree for an automotive infotainment display unit covering various power supply rails including two off-battery converters providing 5.0-V and 3.3-V, and intermediary system rails of 1.8-V and 1.1-V. The test results demonstrate high efficiency, low heat dissipation and CISPR 25 class 5-conducted emissions compliance.

Features

  • Hardware tested automotive infotainment display unit power tree passing CISPR 25 class 5-conducted EMI limits
  • All switching converters operating above 2-MHz to avoid AM band
  • High light load efficiency to reduce standby current consumption
  • Less than 30oC temperature rise under full load current conditions for all switching converters
  • Stable converter operation with over 65o phase margin and over 20-dB gain margin

Typical applications

  • Automotive infotainment: telematics control unit / Automotive body: gateway / Automotive ADAS: mirror replacement/CMS

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