DC/DC Converter. LM5180 Datasheet

LM5180 Converter. Datasheet pdf. Equivalent

LM5180 Datasheet
Recommendation LM5180 Datasheet
Part LM5180
Description PSR Flyback DC/DC Converter
Feature LM5180; Product Folder Order Now Technical Documents Tools & Software Support & Community Reference Des.
Manufacture etcTI
Datasheet
Download LM5180 Datasheet




Texas Instruments LM5180
Product
Folder
Order
Now
Technical
Documents
Tools &
Software
Support &
Community
Reference
Design
LM5180
SNVSB06D – JULY 2018 – REVISED MAY 2020
LM5180 65-VIN PSR Flyback DC/DC Converter with 100-V, 1.5-A Integrated Power MOSFET
1 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 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
• 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 SiC 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
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 flyback converter is available in a 8-pin,
4-mm × 4-mm, thermally-enhanced WSON package
with 0.8-mm pin pitch.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM5180
WSON (8)
4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
VIN = 4.5 V...65 V
Typical Application
T1 DFLY VOUT = 5 V
CIN
2.2 F
DZ
VIN
EN/UVLO SW
LM5180
GND
FB
DF 3 : 1
RFB
158 k:
RSET
SS/BIAS
TC
RSET
12.1 k:
COUT
100 F
Typical Efficiency, VOUT = 5 V
90
85
80
75
70
VIN = 12V
VIN = 24V
65 VIN = 36V
VIN = 48V
VIN = 65V
60
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
Output Current (A)
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.



Texas Instruments LM5180
LM5180
SNVSB06D – JULY 2018 – REVISED MAY 2020
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Description (continued)......................................... 3
6 Pin Configuration and Functions ......................... 4
7 Specifications......................................................... 5
7.1 Absolute Maximum Ratings ...................................... 5
7.2 ESD Ratings.............................................................. 5
7.3 Recommended Operating Conditions....................... 5
7.4 Thermal Information .................................................. 5
7.5 Electrical Characteristics........................................... 6
7.6 Typical Characteristics .............................................. 7
8 Detailed Description ............................................ 10
8.1 Overview ................................................................. 10
8.2 Functional Block Diagram ....................................... 10
8.3 Feature Description................................................. 10
8.4 Device Functional Modes........................................ 16
9 Application and Implementation ........................ 17
9.1 Application Information............................................ 17
9.2 Typical Applications ................................................ 17
10 Power Supply Recommendations ..................... 35
11 Layout................................................................... 36
11.1 Layout Guidelines ................................................. 36
11.2 Layout Examples................................................... 37
12 Device and Documentation Support ................. 38
12.1 Device Support...................................................... 38
12.2 Documentation Support ........................................ 39
12.3 Receiving Notification of Documentation Updates 39
12.4 Support Resources ............................................... 39
12.5 Trademarks ........................................................... 39
12.6 Electrostatic Discharge Caution ............................ 40
12.7 Glossary ................................................................ 40
13 Mechanical, Packaging, and Orderable
Information ........................................................... 40
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision C (April 2019) to Revision D
Page
• Added EMI bullet in Features ................................................................................................................................................. 1
• Added magnetic components in Table 3 ............................................................................................................................. 18
• Added expressions for UVLO turn-on/off voltage thresholds in Typical Applications .......................................................... 21
• Updated Layout Examples .................................................................................................................................................. 37
• Added PSR flyback converter family in Device and Documentation Support ...................................................................... 38
• Updated Documentation Support ......................................................................................................................................... 39
Changes from Revision B (February 2019) to Revision C
Page
• Changed EC table specs for current limit............................................................................................................................... 5
• Added note about failsafe current limit ................................................................................................................................. 15
Changes from Revision A (August 2018) to Revision B
Page
• Changed Vin-max to 65 V ...................................................................................................................................................... 1
• Added CISPR 25 class 5 EMI plots...................................................................................................................................... 23
Changes from Original (July 2018) to Revision A
Page
• Updated Features list; added an Application ......................................................................................................................... 3
• Deleted soft-start capacitor in Figure 23, Figure 38, and Figure 51 .................................................................................... 17
• Updated transformer part number in Table 2 ...................................................................................................................... 18
2 Submit Documentation Feedback
Product Folder Links: LM5180
Copyright © 2018–2020, Texas Instruments Incorporated



Texas Instruments LM5180
www.ti.com
LM5180
SNVSB06D – JULY 2018 – REVISED MAY 2020
5 Description (continued)
The LM5180 flyback 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.
Copyright © 2018–2020, Texas Instruments Incorporated
Product Folder Links: LM5180
Submit Documentation Feedback
3







@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)