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Texas Instruments LM5021-2 | Demoboard PMP8586
Isolated Non-synchronous Flyback Converts Universal Vin to 18V@550mA Reference Design
Overview
| Topology | Flyback Converter |
| Input voltage | 90-275 V |
| Output 1 | 18 V / 0.55 A |
| IC revision | A |
Description
The LM5021-2 is an off-line controller that can work in CCM and DCM. A pulse skip mode improves the efficiency of this isolated flyback, and flattens the curve at most loads. It is also suitable for power line communication PSU.
Features
- Ability for the power supply to work in both CCM and DCM mode
- Wide Vin capability (90 to 275V AC)
- Duty cycle restriction to 80%
- 84% full load efficiency and over a wide range of load
- Gives the user the flexibility to do external slope compensation with LM5021-2
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IR(A) | ISAT,10%(A) | RDC max.(Ω) | fres(MHz) | Version | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 750811434 | Transformer, 770 µH, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product series Transformer | Inductance770 µH | – | – | – | – | – | |||
 | WE-TI Radial Leaded Wire Wound Inductor, 1000 µH, 0.42 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TI Radial Leaded Wire Wound Inductor | Inductance1000 µH | Rated Current0.42 A | Saturation Current @ 10%0.69 A | DC Resistance2.5 Ω | Self Resonant Frequency1.6 MHz | VersionStandard |