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Texas Instruments UCC28711D | Demoboard TIDA-00173
400-V to 690-V AC Input, 50-W Flyback Isolated Power Supply Reference Design for Motor Drives
Overview
| Topology | Flyback Converter |
| Input voltage | 400-690 V |
| Output 1 | 24 V |
| Output 2 | 16 V |
| Output 3 | 6 V |
| IC revision | E2 |
Description
This reference design provides isolated +24V (45W), ±16 V (4.5W), and +6V (0.5W) outputs to power the control electronics in variable speed drives. The power supply can be either powered directly from 3-phase AC mains (380Vac to 690Vac) or can be powered from the DC-link voltage (400Vdc to 1200Vdc). This design uses a quasi-resonant flyback topology and is rated for 50-Watt total output power. The line and load regulation of the power supply is designed to be within 5% using primary-side regulation (eliminating costly feedback components). The power supply is designed to meet the clearance, creepage, and isolation test voltages as per IEC61800-5 requirements.
Features
- Versatile input: can be either 400V-1200V DC or 380V-690V AC
- <5% line and load regulation.
- Protection against input UV/OV, output overload, short-circuit and loss of feedback
- Low-cost solution by implementing primary-side regulation (eliminates feedback loop) and use of 1000V rated MOSFETSs
- Quasi-resonant mode controller improves EMI performance
- Designed to comply to IEC 61800-5
Typical applications
- Solar Inverters
- Servo Drives
- Variable Speed ac and dc Drives
- UPS Systems
- Industrial Inverters
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | VIN | VOut1 (V) | IOut1 (A) | VOut2 (V) | IOut2 (A) | VOut3 (V) | IOut3 (A) | VOut4 (V) | IOut4 (A) | Vaux (V) | fswitch (kHz) | L (mH) | NPRI : NSEC : NAUX | ISAT (A) | VT (V (AC)) | L (mm) | W (mm) | H (mm) | Mount | Size | IR (mA) | fres (MHz) | Version | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (mA) | RDC max. (Ω) | Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 750342585 | SPEC | 5 files | Active i| Production is active. Expected lifetime: >10 years. | MID-OLTI Offline Flyback Transformers for Texas Instruments | 400 - 690 V (AC) | 24 | 2 | 16 | 0.14 | 16 | 0.14 | 6 | 0.1 | 16 | 68 | 2.5 | 47.3:1:2.67:2.67:1.33:2.67 | – | 4500 | 35.56 | 24.38 | 44.2 | THT | ETD29 | – | – | – | – | – | – | – | – | – | ||
 | 74279244 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CBF SMT EMI Suppression Ferrite Bead | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 4.5 | 1.6 | 1.6 | SMT | 1806 | 1000 | – | SMT | 850 | 1250 | 50 MHz | 1500 | 0.1 | High Current | ||
 | 7447462022 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-TI Radial Leaded Wire Wound Inductor | – | – | – | – | – | – | – | – | – | – | – | 0.0022 | – | 4.3 | – | 6 | 6 | 8.5 | THT | 5075 | 6300 | 65 | Heat Shrinking Tube | – | – | – | – | 0.02 | – | ||
 | 768772102 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-TI HV Radial Leaded Wire Wound Inductor (High Voltage) | – | – | – | – | – | – | – | – | – | – | – | 1 | – | 0.55 | – | 7.8 | 7.8 | 9.5 | THT | 8095 | 500 | 1.8 | Standard | – | – | – | – | 2.08 | – |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Status | Product series | VIN | VOut1 (V) | IOut1 (A) | VOut2 (V) | IOut2 (A) | VOut3 (V) | IOut3 (A) | VOut4 (V) | IOut4 (A) | Vaux (V) | fswitch (kHz) | L (mH) | NPRI : NSEC : NAUX | ISAT (A) | VT (V (AC)) | L (mm) | W (mm) | H (mm) | Mount | Size | IR (mA) | fres (MHz) | Version | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (mA) | RDC max. (Ω) | Type | Samples |
|---|