Topology | Flyback Converter |
Input voltage | 400-690 V |
Output 1 | 24 V |
Output 2 | 16 V |
Output 3 | 6 V |
IC revision | E2 |
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.
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IR (A) | ISAT (A) | fres (MHz) | Version | Mount | VIN | VOut1 (V) | IOut1 (A) | VOut2 (V) | IOut2 (A) | VOut3 (V) | IOut3 (A) | Vaux (V) | fswitch (kHz) | NPRI : NSEC : NAUX | VT (V (AC)) | Size | L (mm) | W (mm) | H (mm) | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (mA) | RDC max. (Ω) | Type | Samples | |
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![]() | 7447462022 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-TI Radial Leaded Wire Wound Inductor | 2.2 | 6.3 | 4.3 | 65 | Heat Shrinking Tube | THT | – | – | – | – | – | – | – | – | – | – | – | 5075 | 6 | 6 | 8.5 | – | – | – | – | 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) | 1000 | 0.5 | 0.55 | 1.8 | Standard | THT | – | – | – | – | – | – | – | – | – | – | – | 8095 | 7.8 | 7.8 | 9.5 | – | – | – | – | 2.08 | – | ||
![]() | 750342585 | SPEC | 10 files | Active i| Production is active. Expected lifetime: >10 years. | WE-OLTI Offline Flyback Transformers | 2500 | – | 0.0062 | – | – | THT | 400 - 690 V (AC) | 24 | 2 | 16 | 0.14 | 16 | 0.14 | 16 | 68 | 35.5:1:2:2:0.75:2 | 3800 | ETD29 | 35.56 | 24.38 | 44.2 | – | – | – | – | – | – | ||
![]() | 74279244 | SPEC | 10 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CBF SMT EMI Suppression Ferrite Bead | – | 1 | – | – | SMT | SMT | – | – | – | – | – | – | – | – | – | – | – | 1806 | 4.5 | 1.6 | 1.6 | 850 | 1250 | 50 MHz | 1500 | 0.1 | High Current |
Samples |
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Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IR (A) | ISAT (A) | fres (MHz) | Version | Mount | VIN | VOut1 (V) | IOut1 (A) | VOut2 (V) | IOut2 (A) | VOut3 (V) | IOut3 (A) | Vaux (V) | fswitch (kHz) | NPRI : NSEC : NAUX | VT (V (AC)) | Size | L (mm) | W (mm) | H (mm) | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (mA) | RDC max. (Ω) | Type | Samples |
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