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Texas Instruments UCC28740 | Demoboard TIDA-010071
SAE J1772-compliant electric vehicle service equipment reference design for level 1 and 2 EV charger
Overview
| Topology | Flyback Converter |
| Input voltage | 85-265 V |
| Switching frequency | 1.2-80 kHz |
| Output 1 | 7 V / 0.3 A |
| Output 2 | 15 V / 0.2 A |
| Output 3 | 12 V / 0.5 A |
| IC revision | E2 |
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
Typical applications
- AC charging (pile) station
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | Pins | PCB/Cable/Panel | Modularity | Type | Wire Section | λDom typ.(nm) | Emitting Color | λPeak typ.(nm) | IV typ.(mcd) | VF typ.(V) | Chip Technology | 2θ50% typ.(°) | VIN | VOut1(V) | IOut1(A) | VOut2(V) | IOut2(A) | VOut3(V) | IOut3(A) | Vaux(V) | fswitch(kHz) | NPRI : NSEC : NAUX | ISAT(A) | Size | G(mm) | Working Voltage(V (AC)) | Operating Temperature | IR(A) | L(mH) | RDC max.(mΩ) | VR(V (AC)) | VT(V (AC)) | Material | L(mm) | W(mm) | H(mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WR-PHD Pin Header - Single, 2, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | Pins2 | – | – | TypeStraight | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | Rated Current3 A | – | – | – | – | – | Length5.08 mm | – | – | MountTHT | |||
 | WR-TBL Series 101 - 5.00 mm Horizontal Entry Modular, 2, Wire Protector | Simulation– | Downloads6 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-TBL Series 101 - 5.00 mm Horizontal Entry Modular | Pins2 | PCB/Cable/PanelPCB | ModularityYes | TypeHorizontal | Wire Section 26 to 14 (AWG) 0.5 to 2.5 (mm²) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | Rated Current16 A | – | – | – | – | – | Length10 mm | – | Height12.6 mm | MountTHT | ||
 | WR-TBL Series 101 - 5.00 mm Horizontal Entry Modular, 3, Wire Protector | Simulation– | Downloads6 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-TBL Series 101 - 5.00 mm Horizontal Entry Modular | Pins3 | PCB/Cable/PanelPCB | ModularityYes | TypeHorizontal | Wire Section 26 to 14 (AWG) 0.5 to 2.5 (mm²) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | Rated Current16 A | – | – | – | – | – | Length15 mm | – | Height12.6 mm | MountTHT | ||
 | WE-CMB Common Mode Power Line Choke, 4, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CMB Common Mode Power Line Choke | Pins4 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | SizeXS | Pin length2.5 mm | – | Operating Temperature -40 °C up to +125 °C | Rated Current0.7 A | Inductance10 mH | DC Resistance350 mΩ | Rated Voltage250 V (AC) | Insulation Test Voltage1500 V (AC) | MaterialMnZn | Length15 mm | Width7.5 mm | Height18 mm | MountTHT | ||||
 | WL-SMCW SMT Mono-color Chip LED Waterclear, –, – | Downloads27 files RAY files
| Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | – | – | – | – | – | Dominant Wavelength [typ.]525 nm | Emitting ColorGreen | Peak Wavelength [typ.]515 nm | Luminous Intensity [typ.]430 mcd | Forward Voltage [typ.]3.2 V | Chip TechnologyInGaN | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | – | – | – | – | – | – | – | – | Size0603 | – | – | Operating Temperature -40 °C up to +85 °C | – | – | – | – | – | – | Length1.6 mm | Width0.8 mm | Height0.7 mm | MountSMT | |||
 | WE-OLTI Offline Flyback Transformers, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-OLTI Offline Flyback Transformers | – | – | – | – | – | – | – | – | – | – | – | – | Input Voltage 85 - 265 V (AC) | Output Voltage 112 V | Output Current 10.3 A | Output Voltage 27 V | Output Current 22 A | Output Voltage 3-15 V | Output Current 30.3 A | Auxiliary Voltage15 V | Switching Frequency 66 | Turns Ratio29.33:1:1.67:3:3 | Saturation Current1.4 A | SizeEFD20 | – | – | Operating Temperature -40 °C up to +125 °C | – | Inductance0.68 mH | – | – | Insulation Test Voltage3750 V (AC) | – | Length21.5 mm | Width29 mm | Height12.45 mm | MountTHT |