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reference designLM5021-2 | Demoboard PMP8586

Texas Instruments LM5021-2 | Demoboard PMP8586

Isolated Non-synchronous Flyback Converts Universal Vin to 18V@550mA Reference Design

Overview

TopologyFlyback Converter
Input voltage90-275 V
Output 118 V / 0.55 A
IC revisionA

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

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Order Code
Data­sheet
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Downloads
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Product series
L(µH)
IR(A)
ISAT,10%(A)
RDC max.(Ω)
fres(MHz)
Version
SamplesAvailability & Sample
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750811434
SPECTransformer, 770 µH, –
Simu­lation
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Downloads4 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product series Transformer
Inductance770 µH
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744743102
SPECWE-TI Radial Leaded Wire Wound Inductor, 1000 µH, 0.42 A
Simu­lation
Availability
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Downloads9 files

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 
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