Step-Down Converter with Input Overvoltage Protection Reference Design


Design files


This reference design details a power management circuit which is capable to be operated at a supply voltage which is temporarily exceeding the maximum recommended supply voltage of the DCDC converter used. The protection is achieved by disconnecting the supply voltage and disabling the converter during the overvoltage events. The implementation is based on a completely integrated step down converter circuit enabling a small total solution while still capable of handling up to 3 A at the output.


• reliable input overvoltage protection for temporary overvoltage events
• scaleable overvoltage protection voltage range
• small solution
• more than 10W output power possible
• simple design, small BOM
• automotive qualified components

?? 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.


Detailed schematic diagram for design layout and components


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

TIDC599.ZIP (68 K)

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.

Buck converters (integrated switch)

TPS62130A-Q1TPS62130A-Q1 3 to 17-V 3-A Automotive Step-Down Converter in 3 × 3 QFN Package

Data sheet: PDF
Buck converters (integrated switch)

TPS62150A-Q1TPS62150A-Q1 3 to 17-V 1-A AUTOMOTIVE Step-Down Converter in 3 × 3 QFN Package

Data sheet: PDF

Technical documentation

No results found. Please clear your search and try again.
View all 4
Type Title Date
Technical article Find your pot of gold—no luck required! Mar. 14, 2016
Technical article Input overvoltage protection enables higher efficiency and lower cost power supplies in automotive applications Oct. 27, 2014
Technical article Protect your circuit against the unknown! Oct. 16, 2014
More literature Step-Down Converter With Input Overvoltage Protection Sep. 04, 2014

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. ​​​​​​​​