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LM5180NGUR

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Texas Instruments

65-VIN NO-OPTO FLYBACK CONVERTER WITH 100-V, 1.5-A INTEGRATED MOSFET

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WSON (NGU)
Integrated Circuits (ICs)

LM5180NGUR

Active
Texas Instruments

65-VIN NO-OPTO FLYBACK CONVERTER WITH 100-V, 1.5-A INTEGRATED MOSFET

Technical Specifications

Parameters and characteristics for this part

SpecificationLM5180NGUR
Frequency - Switching [Max]350 kHz
Frequency - Switching [Min]10 kHz
FunctionStep-Up/Step-Down
Mounting TypeWettable Flank, Surface Mount
Number of Outputs1
Operating Temperature [Max]150 °C
Operating Temperature [Min]-40 °C
Output ConfigurationPositive and Negative
Output TypeAdjustable
Package / Case8-WDFN Exposed Pad
Supplier Device Package8-WSON (4x4)
Synchronous RectifierFalse
TopologyFlyback
Voltage - Input (Max) [Max]65 V
Voltage - Input (Min) [Min]4.5 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

DistributorPackageQuantity$
DigikeyCut Tape (CT) 1$ 4.27
10$ 3.83
25$ 3.62
100$ 3.14
250$ 2.98
500$ 2.67
1000$ 2.25
Digi-Reel® 1$ 4.27
10$ 3.83
25$ 3.62
100$ 3.14
250$ 2.98
500$ 2.67
1000$ 2.25
Tape & Reel (TR) 4500$ 2.14
Texas InstrumentsLARGE T&R 1$ 2.93
100$ 2.39
250$ 1.88
1000$ 1.59

Description

General part information

LM5180-Q1 Series

The LM5180-Q1 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 component crossing the isolation barrier. Boundary conduction mode (BCM) switching enables a compact 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 headroom for line transients.

The LM5180-Q1 converter simplifies implementation of isolated DC/DC supplies with optional features to optimize performance for the target end equipment. The output voltage is set by one resistor, while an optional resistor improves output voltage accuracy by negating the thermal coefficient of the flyback diode voltage drop. Additional features include an internally-fixed or externally-programmable soft start, optional bias supply connection for higher efficiency, precision enable input with hysteresis for adjustable line UVLO, hiccup-mode overload protection, and thermal shutdown protection with automatic recovery.

The LM5180-Q1 is qualified to automotive AEC-Q100 grade 1 and is available in 8-pin WSON package with 0.8-mm pin pitch and wettable flanks.

Documents

Technical documentation and resources

PSR Flyback DC/DC Converter Transformer Design for mHEV Applications

Application brief

An overview of radiated EMI specifications for power supplies

White paper

Selecting output caps to optimize ripple and stability in PSR flyback converters (Rev. B)

Analog Design Journal

How an auxless PSR-flyback converter can increase PLC reliability and density

Analog Design Journal

Designing High Voltage Power Supply for Ultrasound Smart Probes (Rev. A)

Application note

Why use PSR‐flyback isolated converters in dual‐battery mHEV systems (Rev. A)

Analog Design Journal

LMx518x-Q1 Functional Safety FIT Rate and Failure Mode Distribution (Rev. A)

Functional safety information

LM5180-Q1 Dual-Output EVM User's Guide (Rev. B)

EVM User's guide

How to raise regulation performance with a stacked-output PSR flyback DC/DC conver

Technical article

Mitigating CMTI on a PSR flyback for SiC-based traction inverter designs

Technical article

LM5180 65-VIN PSR Flyback DC/DC Converter with 100-V, 1.5-A Integrated Power MOSFET datasheet (Rev. D)

Data sheet

Static Magnet Power Supply Design for Magnetic Resonance Imaging Application

Application note

LM5180-Q1 Single-Output EVM User's Guide (Rev. D)

EVM User's guide

An overview of conducted EMI specifications for power supplies

White paper

Isolated Power Topologies for PLC I/O Modules and Other Low-Power Applications (Rev. A)

Product overview

Topology Selection for Isolated Power Supplies in Patient Monitor (Rev. A)

Application note

LM5181 Bipolar + and - 18 V Output Design for Signal Chains in PLC Applications

Application note

LM5180 EMI Performance

Application note

Powering Drones With a Wide VIN DC-DC Converter (Rev. A)

Application brief