LM5180 Datasheet | Texas Instruments

Features 2 Applications - 1 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 ponent crossing the isolation barrier - ±1.5% total output regulation accuracy - Optional VOUT temperature pensation - 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 pensation - 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 - Create a custom regulator design using WEBENCH® Power Designer - Isolated field transmitters and field actuators - Multi-output rails for analog input modules - Motor drives: IGBT and Si C gate drive supplies - Building automation HVAC systems - Isolated bias supplies 3 Description The LM5180 is a primary-side regulated (PSR) flyback converter with high efficiency over a wide input voltage range of 4.5 V to 65 V. The isolated output voltage is sampled from the primary-side flyback voltage, eliminating the need for an optocoupler, voltage reference, or third winding from the transformer for output voltage regulation. The high level of integration results in a simple, reliable and high-density design with only one ponent crossing the isolation barrier. Boundary conduction mode (BCM) switching enables a pact magnetic solution and better than ±1.5% load and line regulation performance. An integrated 100-V power MOSFET provides output power up to 7 W with enhanced...