Reference Design Of An Automotive 400-V to 12-V Unidirectional Converter

Reference design for an automotive 400-V battery to 12 V, 3.6-kW DC/DC converter.

Reference Design Of An Automotive 400-V to 12-V Unidirectional Converter
400V to 12V automotive converter on PCB (Supply: TI)

 Most new Electrical Automobiles (EVs) have high-voltage battery packs, however the auxiliary system corresponding to lightning system, infotainment system, security programs, and so forth. in vehicles and different autos nonetheless runs at 12V DC. Though the facility consumption of those particular person programs doesn’t appears excessive, the cumulative energy of all of the system when operating collectively can add to 1000s of watts. Due to this fact, it’s important to have a secure and dependable DC/DC converter that may work in harsh working circumstances and provide fixed 12V DC output.

To sort out this downside, Texas Devices have designed a 3.6 kW DC/DC converter that may work with broad enter from 200V to 470V and provides a 12 V output. The output is adjustable from 9V to 15V with a most present of 300Amps. The output is scalable to 800-V enter programs, with tight regulation of < ±1%. The converter additionally gives soft-switching utilizing a phase-shifted full bridge analog management loop. A circuit breaker is utilized for overcurrent and overvoltage safety. The reference design employs Sic MOSFETs on the high-voltage facet and is pushed by 5.7-kVRMS, bolstered remoted dual-channel gate drivers.

The reference design additionally options Zero Voltage Switching (ZVS) over a variety of working circumstances. It additionally options numerous mild load administration options corresponding to dynamic SR on and off management and burst modes, and so forth. The design additionally has a bunch MCU for supervision and present and voltage loop management. A quick circuit breaker is applied to adjust to security in automotive.

This reference design has been examined by Texas Devices. To simplify the design, TI has offered the firmware libraries, BOM, Gerber information, and so forth, which might be discovered on the Design information PDF of TIDA-020031. Yow will discover further information concerning the reference design on the corporate’s web site. To learn extra about this reference design click on right here.

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