AC level 2 charger platform reference design


Design files


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, and service and user interfaces. 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 IEC61851 standard, an efficient relay and contactor drive, plug lock motor driver, flux gate circuit to detect AC and DC currents for RCD applications, and isolated line voltage sensing across the relay and contactor.

  • Ultra-low standby UCC28742-based isolated 29-W AC/DC stage to improve energy efficiency
  • Supercapacitor backup supplying up to 7.5 W for three seconds during energy storage release (AC mains failing)
  • DRV8220 current controller to drive high-current relays and contactors for thermal protection, RCD AC and DC detection, and plug lock control
  • Isolated line voltage sensing using the ISO1212 digital-input receiver for welded relay and contactor detection
  • Tight output voltage regulation (< ±5%) of LDOs and the high slew rate of the TLV1805 device for control pilot interface
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Important note
This reference design is a replacement for the now obsolete TIDA-00637 and TIDA-010071.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUF04.PDF (2974 K)

Reference design overview and verified performance test data

TIDMB97.PDF (1249 K)

Detailed schematic diagram for design layout and components

TIDMB98.PDF (231 K)

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

TIDMB99.PDF (846 K)

Detailed overview of design layout for component placement

TIDMBA1.ZIP (8020 K)

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

TIDCGC9.ZIP (4754 K)

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

TIDMBA0.PDF (4338 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

AC/DC & DC/DC controllers (external FET)

UCC28742High-Efficiency Flyback Controller with 1% Output regulation accuracy

Data sheet: PDF | HTML
AC/DC & DC/DC converters (integrated FET)

TPS55330Integrated 5-A 24-V Wide Input Range Boost/SEPIC/Flyback DC-DC Regulator

Data sheet: PDF | HTML
AC/DC & DC/DC converters (integrated FET)

TPS563210A17V Input, 3A Synchronous Step-Down Regulator in SOT-23 w/ Advanced Eco-mode™, PG, Soft Start

Data sheet: PDF | HTML
Arm-based processors

AM623Internet of Things (IoT) and gateway SoC with Arm® Cortex®-A53-based object and gesture recognition

Data sheet: PDF | HTML
Arm-based processors

AM625Human-machine-interaction SoC with Arm® Cortex®-A53-based edge AI and full-HD dual display

Data sheet: PDF | HTML
Brushed DC (BDC) motor drivers

DRV822020-V, 1.76-A H-bridge motor driver with auto sleep mode

Data sheet: PDF | HTML

TLV1805High voltage comparator with push-pull output and shutdown

Data sheet: PDF | HTML
Isolated digital inputs

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

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

TPS7A39150-mA, 33-V, low-noise, high-PSRR, dual-channel positive & negative low-dropout voltage regulator

Data sheet: PDF | HTML
Precision ADCs

ADC122S0512 Channel, 200 ksps to 500 ksps 12-Bit A/D Converter

Data sheet: PDF
Shunt voltage references

ATL4312.5-V low-IQ adjustable precision shunt regulator

Data sheet: PDF | HTML
Supervisor & reset ICs

TL7705A5-V single-supply voltage supervisor with programmable delay time

Data sheet: PDF | HTML
eFuses & hot swap controllers

TPS259472.7-V to 23-V, 28-mΩ, 5.5-A eFuse with integrated reverse polarity protection

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Design guide AC Level 2 Charger Platform Reference Design PDF | HTML Dec. 29, 2022
Technical article Top 3 design considerations for EV charging PDF | HTML Jun. 20, 2022

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