SAE J1772-compliant electric vehicle service equipment reference design for level 1 and 2 EV charger
TIDA-010071
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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
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Schematic/Block Diagram
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Design Guide
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TI Devices (15)
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| Sample & Buy |
Design Kits & Evaluation Modules |
| CSD19534Q5A |
100V, N ch NexFET MOSFET™, single SON5x6, 15.1mOhm |
MOSFETs |
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Not Available |
| DRV110 |
Single-Channel Relay, Solenoid, Valve Low-Side Controller With Current Regulation |
Motor drivers |
Sample & Buy |
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| ISO1212 |
Dual-channel Isolated 24-V to 60-V digital input receiver for digital input modules |
Isolation |
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| LM79L |
Series 3-Terminal Negative Regulators |
Power management |
Sample & Buy |
Not Available |
| LP2951 |
30V, 100mA Micropower Voltage Regulators with Shutdown |
Power management |
Sample & Buy |
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| TL431LI |
Adjustable precision shunt regulator with optimized reference current (pin layout: KRA) |
Voltage references |
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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 |
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| TLV760 |
100-mA, 30-V wide-VIN, fixed-output linear voltage regulator |
Power management |
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Not Available |
| TPS561201 |
4.5V to 17V Input, 1A Synchronous Step-Down Voltage Regulator in 6-pin SOT-23 |
Step-down (buck) |
Sample & Buy |
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| TPS62172 |
3–17V 0.5A Step-Down Converter in 2x2 QFN package |
Step-down (buck) |
Sample & Buy |
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| TPS715A |
24-V, 80-mA, Low Iq, Low-Dropout Linear Regulator |
Power management |
Sample & Buy |
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| TPS7A30 |
Vin -3V to -36V, -200mA, Ultra-Low-Noise, High-PSRR, Low-Dropout (LDO) Linear Regulator |
Power management |
Sample & Buy |
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| 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 |
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CAD/CAE symbols
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Technical Documents
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User guides (1)
| Title | Type | Size (KB) | Date |
| | PDF | 8146 |
25 Apr 2019
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Design files (6)
| | ZIP | 401 |
11 Oct 2019
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| | ZIP | 3242 |
11 Oct 2019
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| | PDF | 1548 |
11 Oct 2019
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| | PDF | 370 |
11 Oct 2019
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| | PDF | 115 |
11 Oct 2019
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| | PDF | 718 |
11 Oct 2019
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