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LM5181 SNVSBM6A – APRIL 2020 – REVISED JANULAMRY52108211
SNVSBM6A – APRIL 2020 – REVISED JANUARY 2021
LM518...
www.ti.com
LM5181 SNVSBM6A – APRIL 2020 – REVISED JANULAMRY52108211
SNVSBM6A – APRIL 2020 – REVISED JANUARY 2021
LM5181 65-VIN PSR Flyback DC/DC Converter with 100-V, 0.75-A Integrated MOSFET
1 Features
2 Applications
Functional Safety-Capable – Documentation available to aid functional safety system design
Designed for reliable and rugged applications – Wide input voltage range of 4.5 V to 65 V with operation down to 3.5 V after start-up – Robust solution with only one component crossing the isolation barrier – ±1.5% total output regulation accuracy – Optional VOUT temperature compensation – 6-ms internal or programmable soft start – Input UVLO and thermal shutdown protection – Hiccup-mode overcurrent fault protection – –40°C to +150°C junction temperature range
Integration reduces solution size and cost – Integrated 100-V, 0.4-Ω power MOSFET – No opto-coupler or transformer auxiliary winding required for VOUT regulation – Internal loop compensation
High-efficiency PSR flyback operation – Quasi-resonant MOSFET turn-off in BCM – Low input quiescent current – External bias option for improved efficiency – Single- and multi-output implementations
Ultra-low conducted and radiated EMI signatures – Soft switching avoids diode reverse recovery – Optimized for CISPR 32 EMI requirements
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