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


Design files


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. 

  • 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
Output voltage options PMP22030.1 PMP22030.2 PMP22030.3 PMP22030.4 PMP22030.5 PMP22030.6
Vin (Min) (V) 6 4.5 6 3 3 3
Vin (Max) (V) 36 5.5 36 3.5 3.5 3.5
Vout (Nom) (V) 5 3.3 3.3 1.1 3.3 1.8
Iout (Max) (A) 1.5 .3 2.5 2.5 .5 .3
Output Power (W) 7.5 .99 8.25 2.75 1.65 .54
Isolated/Non-Isolated Non-Isolated Non-Isolated Non-Isolated Non-Isolated Non-Isolated Non-Isolated
Input Type DC DC DC DC DC DC
Topology Buck- Synchronous Linear Regulator Buck- Synchronous Buck- Synchronous Other Linear Regulator
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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.

TIDT120.PDF (5384 K)

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

TIDM077.PDF (363 K)

Detailed schematic diagram for design layout and components

TIDM078.PDF (60 K)

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

TIDM079.PDF (192 K)

Detailed overview of design layout for component placement

TIDM081.ZIP (1134 K)

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


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

TIDM080.PDF (1005 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

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Linear & low-dropout (LDO) regulators

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Load switches

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Technical documentation

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Type Title Date
* Test report Efficient, Low-Heat, CISPR 25 Class 5-Compliant Power Reference Design Jul. 12, 2019

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