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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 | Product series | VIN | VOut1 (V) | IOut1 (mA) | VOut2 (V) | IOut2 (A) | Vaux (V) | fswitch (kHz) | L (µH) | NPRI : NSEC : NAUX | ISAT (mA) | VT (V (AC)) | L (mm) | W (mm) | H (mm) | Mount | Size | IR (A) | RDC max. (Ω) | fres (MHz) | Version | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 750811434 | SPEC | 4 files | MID-OLTI Offline Flyback Transformers for Texas Instruments | 85 - 265 V (AC) | 16.5 | 300 | 5 | 1 | 16.5 | 140 - 500 | 770 | 18:6:1:6 | 800 | 3000 | 20.32 | 24.38 | 16 | THT | EE16/8/5 | – | – | – | – | ||
 | 744743102 | SPEC | 8 files | WE-TI Radial Leaded Wire Wound Inductor | – | – | – | – | – | – | – | 1000 | – | 550 | – | 8 | 8 | 12.5 | THT | – | 0.42 | 2.5 | 1.6 | Standard |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Product series | VIN | VOut1 (V) | IOut1 (mA) | VOut2 (V) | IOut2 (A) | Vaux (V) | fswitch (kHz) | L (µH) | NPRI : NSEC : NAUX | ISAT (mA) | VT (V (AC)) | L (mm) | W (mm) | H (mm) | Mount | Size | IR (A) | RDC max. (Ω) | fres (MHz) | Version | Samples |
|---|