TIDA-010071

SAE J1772-compliant electric vehicle service equipment reference design for level 1 and 2 EV charger

TIDA-010071

Design files

Overview

This reference design highlights an ultra-low standby isolated AC/DC auxiliary power stage followed by converters and linear regulators, a comparator-based control pilot interface to meet the SAE J1772 standard, an  efficient relay and contactor drive and isolated line voltage sensing across the relay and contactor. Electric vehicle service equipment (EVSE) facilitates power delivery to electric vehicles safely from the grid. An EVSE control system consists of an auxiliary power stage, an off-board AC/DC high power stage (only in DC charging stations), energy metering unit, AC and DC residual current detector, an isolation monitor unit, relays and contactors with drive, two-way communication over single wire, service and user interfaces.

Features
  • Ultra-low standby UCC28740-based isolated AC/DC stage to achieve ENERGY STAR® certification for EV charging stations
  • Tight output voltage regulation (< ±2%) of LDOs and the high slew rate of the TLV1805 device ensures SAE J1772 certification for the control pilot interface
  • Ultra-low standby as well as cost-optimized converters and linear regulators to power up points-of-load
  • DRV110 current controller to drive high-current relays and contactors for thermal protection and reducing power dissipation
  • Isolated line voltage sensing using the ISO1212 digital-input receiver for welded relay and contactor detection

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.

TIDUER6.PDF (8183 K)

Reference design overview and verified performance test data

TIDM249.PDF (718 K)

Detailed schematic diagram for design layout and components

TIDM250.PDF (115 K)

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

TIDM251.PDF (370 K)

Detailed overview of design layout for component placement

TIDM253.ZIP (3242 K)

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

TIDCFN6.ZIP (401 K)

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

TIDM252.PDF (1548 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Flyback controllers

UCC28740Constant-Voltage, Constant-Current (CVCC) Flyback controller with Secondary Side Regulation (SSR)

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

UCC28740-Q1Automotive ultra low standby, flyback controller with integrated HV startup and optocoupler feedback

Data sheet document-pdfAcrobat PDF open-in-new HTML
Buck converters (integrated switch)

TPS5612014.5V to 17V Input, 1A Synchronous Step-Down Voltage Regulator in 6-pin SOT-23

Data sheet document-pdfAcrobat PDF open-in-new HTML
Buck converters (integrated switch)

TPS621723–17V 0.5A Step-Down Converter in 2x2 QFN package

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

TLV1805High voltage comparator with push-pull output and shutdown

Data sheet document-pdfAcrobat PDF open-in-new HTML
Isolated digital inputs

ISO1212Dual-channel Isolated 24-V to 60-V digital input receiver for digital input modules

Data sheet document-pdfAcrobat PDF open-in-new HTML
Linear & low-dropout (LDO) regulators

LM79L100-mA, negative linear voltage regulator

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

LP2951100-mA, 30-V, low-dropout voltage regulator with power good & enable

Data sheet document-pdfAcrobat PDF open-in-new HTML
Linear & low-dropout (LDO) regulators

TLV704150-mA, 24-V, ultra-low-IQ, low-dropout voltage regulator

Data sheet document-pdfAcrobat PDF open-in-new HTML
Linear & low-dropout (LDO) regulators

TLV760100-mA, 30-V, low-dropout voltage regulator

Data sheet document-pdfAcrobat PDF open-in-new HTML
Linear & low-dropout (LDO) regulators

TPS715A80-mA, 24-V, ultra-low-IQ, low-dropout voltage regulator

Data sheet document-pdfAcrobat PDF open-in-new HTML
Linear & low-dropout (LDO) regulators

TPS7A30200-mA, low-noise, high-PSRR, negative, adjustable low-dropout voltage regulator with enable

Data sheet document-pdfAcrobat PDF open-in-new HTML
N-channel MOSFETs

CSD19534Q5A100-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 15.1 mOhm

Data sheet document-pdfAcrobat PDF open-in-new HTML
Shunt voltage references

TL431LIAdjustable precision shunt regulator with optimized reference current (pin layout: KRA)

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

DRV110Single-Channel Relay, Solenoid, Valve Low-Side Controller With Current Regulation

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

Technical documentation

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Type Title Date
* Design guide SAE J1772-Compliant Electric Vehicle Service Equipment Ref Des for Level 1 and 2 Apr. 25, 2019

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