SAE J1772-compliant electric vehicle service equipment reference design for level 1 and 2 EV charger
TIDA-010071
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
See the Important Notice and Disclaimer covering reference designs and other TI resources.
Key Document
Description
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
See the Important Notice and Disclaimer covering reference designs and other TI resources.
Schematic/Block Diagram
Quickly understand overall system functionality.

Download Schematic
Design Guide
Get results faster with test and simulation data that's been verified.

Download Design Guide
TI Devices (15)
Order samples, get tools and find more information on the TI products in this reference design.
Sample & Buy |
Design Kits & Evaluation Modules |
CSD19534Q5A |
100V, N ch NexFET MOSFET™, single SON5x6, 15.1mOhm |
MOSFETs |
Sample & Buy |
Not Available |
DRV110 |
Single-Channel Relay, Solenoid, Valve Low-Side Controller With Current Regulation |
Motor drivers |
Sample & Buy |
View Design Kits & Evaluation Modules |
ISO1212 |
Dual-channel Isolated 24-V to 60-V digital input receiver for digital input modules |
Isolation |
Sample & Buy |
View Design Kits & Evaluation Modules |
LM79L |
Series 3-Terminal Negative Regulators |
Power management |
Sample & Buy |
Not Available |
LP2951 |
30V, 100mA Micropower Voltage Regulators with Shutdown |
Power management |
Sample & Buy |
View Design Kits & Evaluation Modules |
TL431LI |
Adjustable precision shunt regulator with optimized reference current (pin layout: KRA) |
Voltage references |
Sample & Buy |
Not Available |
TLV1805 |
High voltage comparator with push-pull output and shutdown |
Amplifiers |
Sample & Buy |
Not Available |
TLV704 |
24V Input Voltage, 150mA, Ultra-Low-Iq Low-Dropout (LDO) Regulators |
Power management |
Sample & Buy |
View Design Kits & Evaluation Modules |
TLV760 |
100-mA, 30-V wide-VIN, fixed-output linear voltage regulator |
Power management |
Sample & Buy |
Not Available |
TPS561201 |
4.5V to 17V Input, 1A Synchronous Step-Down Voltage Regulator in 6-pin SOT-23 |
Step-down (buck) |
Sample & Buy |
View Design Kits & Evaluation Modules |
TPS62172 |
3–17V 0.5A Step-Down Converter in 2x2 QFN package |
Step-down (buck) |
Sample & Buy |
View Design Kits & Evaluation Modules |
TPS715A |
24-V, 80-mA, Low Iq, Low-Dropout Linear Regulator |
Power management |
Sample & Buy |
View Design Kits & Evaluation Modules |
TPS7A30 |
Vin -3V to -36V, -200mA, Ultra-Low-Noise, High-PSRR, Low-Dropout (LDO) Linear Regulator |
Power management |
Sample & Buy |
View Design Kits & Evaluation Modules |
UCC28740 |
Constant-Voltage, Constant-Current Flyback Controller Using Opto-Coupler Feedback |
Offline & isolated DC/DC controllers & converters |
Sample & Buy |
View Design Kits & Evaluation Modules |
UCC28740-Q1 |
Automotive ultra low standby, flyback controller with integrated HV startup and optocoupler feedback |
Offline & isolated DC/DC controllers & converters |
Sample & Buy |
View Design Kits & Evaluation Modules |
CAD/CAE symbols
Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.
Step 1: Download and install the free download.
Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.
Step 1: Download and install the free download.
Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
Step 3: Open the .bxl file with the Ultra Librarian software.
You can always access the complete CAD/CAE Symbols database at http://webench.ti.com/cad/
Both PCB footprints and schematic symbols are available for download in a vendor neutral format, which can then be exported to the leading EDA CAD/CAE design tools using the Ultra Librarian Reader. The reader is available as a (free download.).
The UL Reader is a subset of the Ultra Librarian toolset that can generate, import, and export components and their attributes in virtually any EDA CAD/CAE format.
Technical Documents
See the Important Notice and Disclaimer covering reference designs and other TI resources.
User guides (1)
Title | Type | Size (KB) | Date |
| PDF | 8146 |
25 Apr 2019
|
Design files (6)
| ZIP | 401 |
11 Oct 2019
|
| ZIP | 3242 |
11 Oct 2019
|
| PDF | 1548 |
11 Oct 2019
|
| PDF | 370 |
11 Oct 2019
|
| PDF | 115 |
11 Oct 2019
|
| PDF | 718 |
11 Oct 2019
|
Support & training
Search our extensive online knowledge base where millions of technical questions and answers are available 24/7.
Search answers from TI experts
Content is provided 'AS IS' by the respective 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 visit our Support page.