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reference designLM5180

Texas Instruments LM5180

LM5180 65-VIN PSR Flyback DC/DC Converter with 100-V, 1.5-A Integrated Power MOSFET

Overview

TopologyFlyback Converter
Input voltage4.5-65 V
Switching frequency12-350 kHz
Output 15 V / 1.5 A

Description

The LM5180 is a primary-side regulated (PSR) fly back 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 fly back 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 andline regulation performance. An integrated 100-V power MOSFET provides output power up to 7 W with enhanced headroom for line transients.The LM5180 flyback converter is available in a 8-pin,4-mm × 4-mm, thermally enhanced WSON package with 0.8-mm pin pitch.

Features

  • Designed for reliable and rugged applications
  • Wide input voltage range of 4.5 V to 65 V withoperation down to 3.5 V after start-up
  • Robust solution with only one componentcrossing 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 auxiliarywinding 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
  • Create a custom regulator design usingWEBENCH® Power Designer

Typical applications

  • Motor drives: IGBT and SiC gate drive supplies, Isolated bias supplies
  • Isolated field transmitters and field actuators, Multi-output rails for analog input modules, Building automation HVAC systems

More information

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
C
Tol. C
VR(V (DC))
Size
Operating Temperature
DF(%)
RISO
Ceramic Type
L(mm)
W(mm)
H(mm)
Fl(mm)
Packaging
VIN
VOut1(V)
IOut1(mA)
VOut2(V)
IOut2(mA)
L(µH)
n
ISAT(A)
LS(µH)
VT(V (AC))
IC Reference
Samples
885012109004
WCAP-CSGP MLCCs 6.3 V(DC), 100 µF, ±20%
Simu­lation
Downloads9 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

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ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 6.3 V(DC)
Capacitance100 µF
Capacitance±20% 
Rated Voltage6.3 V (DC)
Size1210 
Operating Temperature -55 °C up to +85 °C
Dissipation Factor10 %
Insulation Resistance0.001 GΩ
Ceramic TypeX5R Class II 
Length3.2 mm
Width2.5 mm
Height2.5 mm
Pad Dimension0.6 mm
Packaging7" Tape & Reel 
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750313974
WE-FLYLT Flyback Transformers for Linear Technology, –, –
Simu­lation
Downloads8 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

Download all 8 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-FLYLT Flyback Transformers for Linear Technology
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SizeEP10 
Operating Temperature -40 °C up to +125 °C
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Length13.34 mm
Width15.24 mm
Height11.43 mm
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PackagingTape and Reel 
Input Voltage 8 - 32 V (DC)
Output Voltage 15 V
Output Current 1360 mA
Output Voltage 25 V
Output Current 2360 mA
Inductance40 µH
Turns Ratio3:1:1 
Saturation Current2 A
Leakage Inductance1 µH
Insulation Test Voltage1500 V (AC)
IC ReferenceLT8301 
750317605
WE-FLYTI Flyback Transformers, –, –
Simu­lation
Downloads10 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

Others ZIP

Download all 10 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-FLYTI Flyback Transformers
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SizeEP7 
Operating Temperature -40 °C up to +125 °C
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Length9.78 mm
Width9.5 mm
Height10.54 mm
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PackagingTape and Reel 
Input Voltage 12 - 70 V (DC)
Output Voltage 15 V
Output Current 11000 mA
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Inductance30 µH
Turns Ratio3:1 
Saturation Current2.6 A
Leakage Inductance0.9 µH
Insulation Test Voltage625 V (AC)
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750317595
WE-FLYTI Flyback Transformers, –, –
Simu­lation
Downloads9 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

Others ZIP

Download all 9 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-FLYTI Flyback Transformers
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SizeEP7 
Operating Temperature -40 °C up to +125 °C
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Length9.76 mm
Width9.5 mm
Height10.54 mm
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Input Voltage 8 - 65 V (DC)
Output Voltage 115 V
Output Current 1200 mA
Output Voltage 28 V
Output Current 2200 mA
Inductance30 µH
Turns Ratio1.82:1.82:1 
Saturation Current2.4 A
Leakage Inductance0.5 µH
Insulation Test Voltage1500 V (AC)
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