Automotive Pre-Boost Reference Design with 10.5V @ 3.0A


Design files


This automotive pre-boost reference design has a nominal input voltage range of 2.7V to 10.5V and provides 10.5V @ 3.0A during cranking. It can withstand peak voltages up to 32.0V. The boost controller operates at 400KHz and can achieve 93% peak efficiency.

  • Compact size
  • High efficiency
  • Automotive qualified controller LM5150-Q1
Output voltage options PMP30236.1
Vin (Min) (V) 2.7
Vin (Max) (V) 16
Vout (Nom) (V) 10.5
Iout (Max) (A) 3
Output Power (W) 31.5
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Boost- Non Sync
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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.


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

TIDRT55.PDF (147 K)

Detailed schematic diagram for design layout and components

TIDRT56.PDF (25 K)

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

TIDRT57.PDF (163 K)

Detailed overview of design layout for component placement

TIDRT59.ZIP (134 K)

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

TIDRT58.PDF (401 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Boost controllers (external switch)

LM5150-Q1Automotive 1.5-V to 42-V VIN, low IQ boost controller with 6.8V, 7.5V, 8.5V, 10.5V output options

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP30236 Test Results Oct. 10, 2017
Technical article How to minimize pre-boost converter undershoot when automotive battery voltage drops Nov. 14, 2017

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