High-Efficiency Low Vin 30W Boost Converter for Automotive Applications (E-Call) Reference Design


Design files


PMP9382 is a low Vin boost converter utilizing the automotive grade LM3478Q-Q1 controller. This design starts at a diode drop above the minimum input voltage of 2.97V (~3.4V) to a maximum of 6V in.  Once the power supply is enabled and output is present, this design will work down to 2V input minimum, supplying an output voltage of 10V at 3A. The Switching frequency is set to 400 kHz.

  • Low Vin operation at 2V minimum
  • 10V @ 3A, 30W output power
  • 2-layer cost effective solution with automotive grade LM3478Q-Q1 boost controller
  • High power efficiency with 94% peak
  • IC Powered from output once running eliminates the need to a boost bias supply
  • This circuit board is tested, and the design files and test report are included.
Output voltage options PMP9382.1
Vin (Min) (V) 2
Vin (Max) (V) 6
Vout (Nom) (V) 10
Iout (Max) (A) 3
Output Power (W) 30
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Boost- Non Sync
?? View video with transcript Video

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.

TIDU976.PDF (1428 K)

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


Detailed schematic diagram for design layout and components


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


Detailed overview of design layout for component placement


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


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


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

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

LM3478Q-Q140-V wide VIN low-side N-channel controller for switching regulators with 10-µA shutdown current

Data sheet: PDF | HTML

CSD16323Q325-V, N channel NexFET™ power MOSFET, single SON 3 mm x 3 mm, 5.5 mOhm

Data sheet: PDF | HTML

Technical documentation

= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Test report PMP9382 Test Results May 04, 2015

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​