1000-W, Bidirectional, 12-V to 12-V Converter Reference Design


Design files


This reference design is a dual-channel, bidirectional converter suitable for 12-V to 12-V, dual-battery system, automotive applications. This reference design has a wide input range (3 V to 40 V) and could give full load (1kW) in the input voltage from 9V to 18V by using two LM5170-Q1 controllers. The efficiency is up to 98% at Vin = 18V, Vout = 12V, Iout = 40A.

  • Full load is up to 1-kW
  • A dual-channel, bidirectional converter
  • The efficiency is up to 98%
Output voltage options PMP15035.1
Vin (Min) (V) 3
Vin (Max) (V) 40
Vout (Nom) (V) 12
Iout (Max) (A) 3
Output Power (W) 36
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Other
?? 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.

TIDT004.PDF (1244 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

TIDRWN3.ZIP (6127 K)

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

TIDCER8.ZIP (1836 K)

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

TIDRWN2.PDF (4190 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Buck-boost & inverting controllers (external switch)

LM51183-75V Wide Vin, Current Mode Non-Synchronous Buck-Boost Controller

Data sheet: PDF | HTML
Buck-boost & inverting controllers (external switch)

LM5170-Q1Multiphase bidirectional current controller, AEC-Q100 qualified

Data sheet: PDF | HTML
General-purpose op amps

LM6142Dual, 24-V, 17-MHz, low-power operational amplifier

Data sheet: PDF
Linear & low-dropout (LDO) regulators

TPS709150-mA, 30-V, ultra-low-IQ, low-dropout voltage regulator with reverse current protection and enable

Data sheet: PDF | HTML
NAND gates

SN74LV00A4-ch, 2-input, 2-V to 5.5-V NAND gates

Data sheet: PDF | HTML
Shunt voltage references

LM4040-N100-ppm/°C precision micropower shunt voltage reference

Data sheet: PDF
Shunt voltage references

LMV431B0.5%, low-voltage (1.24-V) adjustable precision shunt regulator

Data sheet: PDF
Temperature switches

LM26LV±3°C 1.6V-5.5V Capable, factory preset trip point temperature switch with analog outpu

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 1000-W, Bidirectional, 12-V to 12-V Converter Reference Design Jul. 02, 2018

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. ​​​​​​​​