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reference designLM5021 | Demoboard PMP30495

Texas Instruments LM5021 | Demoboard PMP30495

Overview

TopologyFlyback Converter
Input voltage100-623 V
Output 135 V / 0.03 A
Output 212 V / 0.7 A
Output 312 V / 0.73 A
IC revisionB

Description

This offline flyback reference design uses the LM5021 controller to generate 3 isolated outputs (12 V at 705 mA, 12 V at 733 mA, 35 V at 25 mA) from an 3 phase AC input (58 VAC - 255 VAC). The DC input voltage range is between 100 V and 623 V. The design can provide 18-W output power. The LM5021 uses an optical coupler to regulate the 12-V output and to improve transient response. The controller operates with a fixed frequency of 100kHz.

Features

3 phase input, which allows a very wide input voltage rangeAchieves over 85% efficiency at high lineOptocoupled feedback for constant voltage regulationOutput overvoltage protection with latch, in case of loop opto fail

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750317812
SPECOffline Transformer
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Status Activei| Production is active. Expected lifetime: >10 years.
Product series Offline Transformer
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