TIDA-00653

Non-Isolated Bi-Directional Converter Reference Design for Battery Charging Applications

TIDA-00653

Design files

Overview

TIDA-00653 is a non-isolated 48 to 12-V bi-directional converter reference design for 48V battery applications enabled by the UCD3138 digital power controller. The design has the flexibility to work in either a ZVS transition-mode topology to optimize light-load efficiency, or a hard-switching topology for a simple system design. The bi-directional converter features auto-phase shedding, offset for light-load, and adaptive dead-time optimization for compounding efficiency gains greater than 96%. Due to the significant efficiency improvements, heat loss is reduced and no air or liquid cooling are needed automotive applications. Additionally, the use of the UCD3138 high-control frequency controller and hardware-based state machine enable a small form factor and frees the system CPU for other functions such as battery management.

Features
  • ZVS Transition Mode for light load efficiency
  • Near zero latency battery backup ( < 9 uS) to avoid power disturbances in your applications
  • 96% efficiency over wide operating conditions for industry leading battery up time
  • Reduced EMI filter volume for a compact design

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.

TIDUBM6.PDF (3694 K)

Reference design overview and verified performance test data

TIDRL78.PDF (888 K)

Detailed schematic diagram for design layout and components

TIDRL79.PDF (86 K)

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

TIDRVV8.ZIP (25007 K)

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

TIDCC18.ZIP (5339 K)

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

Products

Includes TI products in the design and potential alternatives.

Digital power isolated controllers

UCD3138Highly Integrated Digital Controller for Isolated Power with 3 Feedback Loops and 8 DPWM Outputs

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Digital power isolated controllers

UCD3138064Highly-Integrated Digital Controller for Isolated Power with 64kB Memory

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Digital power isolated controllers

UCD3138064AHighly Integrated Digital Controller for Isolated Power

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Digital power isolated controllers

UCD3138128Highly-Integrated Digital Controller for Isolated Power

Data sheet document-pdfAcrobat PDF open-in-new HTML
Digital power isolated controllers

UCD3138128AHighly-Integrated Digital Controller For Isolated Power

Data sheet document-pdfAcrobat PDF open-in-new HTML
Digital power isolated controllers

UCD3138AUCD3138A Highly Integrated Digital Controller for Isolated Power

Data sheet document-pdfAcrobat PDF open-in-new HTML
Digital power isolated controllers

UCD3138A64Highly-Integrated Digital Controller for Isolated Power

Data sheet document-pdfAcrobat PDF open-in-new HTML
AND gates

SN74AHC1G08Single 2-input, 2-V to 5.5-V AND gate

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CAN & LIN transceivers & SBCs

SN65HVD2333.3 V CAN Transceiver with Standby Mode, Loopback

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Comparators

TLV32025.5-V, high-speed, dual push-pull comparator

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Half-bridge drivers

UCC27201A3-A, 120-V half bridge gate driver with 8-V UVLO and negative voltage handling

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Linear & low-dropout (LDO) regulators

TLV1117800-mA, 15-V, linear voltage regulator

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N-channel MOSFETs

CSD17570Q5B30-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 0.92 mOhm

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Noninverting buffers & drivers

SN74LVC2G342-ch, 1.65-V to 5.5-V buffers

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Precision op amps (Vos<1mV)

OPA2211A1.1nV/rtHz Noise, Low Power, Precision Operational Amplifier

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Shunt voltage references

REF11121-µA, 3-pin SOT-23 10-ppm/°C shunt voltage reference

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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* Design guide Bidirection DC-DC Converter Design Guide Mar. 18, 2016

Related design resources

Software development

FIRMWARE
UCD3138FW-BIDI Non-isolated bi-directional converter with UCD3138 Integrated Digital Controllers

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