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LM5160A

AKTIV

LM5160A – synchroner Abwärts-/Fly-Buck™-Wandler, großer Eingangsbereich, 65 V, 2 A

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Selbe Funktionalität wie der verglichene Baustein bei abweichender Anschlussbelegung
LM5012 AKTIV Asynchroner DC/DC-Abwärtswandler mit extrem niedrigem IQ, 6 bis 100 V Eingang, 2,5 A Higher input voltage rating, easy to use SO-8 package and low IQ.

Produktdetails

Rating Catalog Topology Buck, Flybuck Iout (max) (A) 2 Vin (max) (V) 65 Vin (min) (V) 4.5 Vout (max) (V) 60 Vout (min) (V) 2 Switch current limit (typ) (A) 2.5 Features Enable, Light load efficiency, Pre-bias soft start, Synchronous rectification Control mode Constant on-time (COT) Operating temperature range (°C) -40 to 125 Duty cycle (max) (%) 92
Rating Catalog Topology Buck, Flybuck Iout (max) (A) 2 Vin (max) (V) 65 Vin (min) (V) 4.5 Vout (max) (V) 60 Vout (min) (V) 2 Switch current limit (typ) (A) 2.5 Features Enable, Light load efficiency, Pre-bias soft start, Synchronous rectification Control mode Constant on-time (COT) Operating temperature range (°C) -40 to 125 Duty cycle (max) (%) 92
WSON (DNT) 12 16 mm² 4 x 4
  • Wide 4.5-V to 65-V Input Voltage Range
  • Integrated High-Side and Low-Side Switches
    • No External Schottky Diode Required
  • 2-A Maximum Load Current
  • Adaptive Constant On-Time Control
    • No External Loop Compensation
    • Fast Transient Response
  • Selectable Forced PWM or DCM Operation
    • FPWM Supports Multi-Output Fly-Buck™
  • Nearly Constant Switching Frequency
    • Resistor Adjustable up to 1 MHz
  • Programmable Soft-Start Time
  • Prebiased Start-Up
  • ±1% Feedback Voltage Reference
  • LM5160A Allows External VCC Bias
  • Inherent Protection Features for Robust Design
    • Peak Current Limiting Protection
    • Adjustable Input UVLO and Hysteresis
    • VCC and Gate Drive UVLO Protection
    • Thermal Shutdown Protection With Hysteresis
  • Create a Custom Design Using the LM5160A With the WEBENCH® Power Designer
  • Wide 4.5-V to 65-V Input Voltage Range
  • Integrated High-Side and Low-Side Switches
    • No External Schottky Diode Required
  • 2-A Maximum Load Current
  • Adaptive Constant On-Time Control
    • No External Loop Compensation
    • Fast Transient Response
  • Selectable Forced PWM or DCM Operation
    • FPWM Supports Multi-Output Fly-Buck™
  • Nearly Constant Switching Frequency
    • Resistor Adjustable up to 1 MHz
  • Programmable Soft-Start Time
  • Prebiased Start-Up
  • ±1% Feedback Voltage Reference
  • LM5160A Allows External VCC Bias
  • Inherent Protection Features for Robust Design
    • Peak Current Limiting Protection
    • Adjustable Input UVLO and Hysteresis
    • VCC and Gate Drive UVLO Protection
    • Thermal Shutdown Protection With Hysteresis
  • Create a Custom Design Using the LM5160A With the WEBENCH® Power Designer

The LM5160/A is a 65-V, 2-A synchronous step-down converter with integrated high-side and low-side MOSFETs. The adaptive constant on-time control scheme requires no loop compensation and supports high step-down ratios with fast transient response. An internal feedback amplifier maintains ±1% output voltage regulation over the entire operating temperature range. The on-time varies inversely with input voltage resulting in nearly constant switching frequency.

Peak and valley current limit circuits protect against overload conditions. The undervoltage lockout (EN/UVLO) circuit provides independently adjustable input undervoltage threshold and hysteresis. The LM5160/A is programmed through the FPWM pin to operate in continuous conduction mode (CCM) from no load to full load or to automatically switch to discontinuous conduction mode (DCM) at light load for higher efficiency. Forced CCM operation supports multiple-output and isolated Fly-Buck applications using a coupled inductor.

The LM5160A shares the same features and pin configuration as the LM5160. An external bias supply can be connected to the VCC pin of the LM5160A in Buck and Fly-Buck applications. This additional capability lowers IC power dissipation and improves efficiency at high input voltages.

The LM5160/A is a 65-V, 2-A synchronous step-down converter with integrated high-side and low-side MOSFETs. The adaptive constant on-time control scheme requires no loop compensation and supports high step-down ratios with fast transient response. An internal feedback amplifier maintains ±1% output voltage regulation over the entire operating temperature range. The on-time varies inversely with input voltage resulting in nearly constant switching frequency.

Peak and valley current limit circuits protect against overload conditions. The undervoltage lockout (EN/UVLO) circuit provides independently adjustable input undervoltage threshold and hysteresis. The LM5160/A is programmed through the FPWM pin to operate in continuous conduction mode (CCM) from no load to full load or to automatically switch to discontinuous conduction mode (DCM) at light load for higher efficiency. Forced CCM operation supports multiple-output and isolated Fly-Buck applications using a coupled inductor.

The LM5160A shares the same features and pin configuration as the LM5160. An external bias supply can be connected to the VCC pin of the LM5160A in Buck and Fly-Buck applications. This additional capability lowers IC power dissipation and improves efficiency at high input voltages.

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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Datum
* Data sheet LM5160, LM5160A Wide Input 65-V, 2-A Synchronous Buck / Fly-Buck™ DC/DC Converter datasheet (Rev. E) PDF | HTML 12 Okt 2018
Product overview Isolated Power Topologies for PLC I/O Modules and Other Low-Power Applications (Rev. A) PDF | HTML 20 Aug 2024
Application note Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems (Rev. A) PDF | HTML 26 Jul 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
White paper Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A) 10 Apr 2019
Application brief Powering Drones With a Wide VIN DC-DC Converter (Rev. A) 05 Feb 2019
Technical article Why a wide VIN DC/DC converter is a good fit for high-cell-count battery-powered d PDF | HTML 21 Nov 2017
Technical article Create a Fly-Buck™ converter in WEBENCH® Power Designer PDF | HTML 09 Okt 2015
White paper Designing isolated rails on the fly with Fly-Buck™ converters 29 Sep 2015
Technical article How to design for EMC and isolation with Fly-Buck™ converters PDF | HTML 28 Jul 2015
EVM User's guide LM5160 FlyBuck (Isolated Buck) User’s Guide (Rev. A) 06 Feb 2015
Analog Design Journal Fly-Buck(TM) converter provides EMC and isolation in PLC applications 29 Jan 2015

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

LM5160DNTBKEVM — LM5160DNTBKEVM - synchroner 1,5-A-DC-/DC-Abwärtswandler mit großem 65-V-Eingangsspannungsbereich

 

The LM5160DNTBKEVM evaluation board provides a fully functional buck regulator, employing the constant on-time (COT) operating principle. This evaluation board provides a 5V output over an input range of 10V to 60V. The circuit delivers load currents to 1.5A. The application schematic is setup up (...)

Benutzerhandbuch: PDF
Evaluierungsplatine

LM5160DNTFBKEVM — LM5160DNTFBKEVM Fly-Buck-Evaluierungsplatine mit isolierter Vorspannungsversorgung

The LM5160DNTFBK evaluation module is designed to operate from a 24V nominal bus with an input voltage range of 18V to 32V.  It is capable of supplying 12V/400 mA to the load at the isolated output.  The nominal switching frequency is 300kHz.  The high side and low side MOSFETs are (...)

Benutzerhandbuch: PDF
Simulationsmodell

LM5160 PSpice Transient Model

SNVM692.ZIP (92 KB) - PSpice Model
Simulationsmodell

LM5160 Unencrypted PSpice Transient Model

SNVM965.ZIP (3 KB) - PSpice Model
Berechnungstool

FLYBUCK-FLYBACK-DESIGN-CALC Flybuck / Flyback Calculator

This tool helps a power supply engineer to select the right isolated DC-DC topology based on the specifications. Depending on the topology chosen, the calculator also recommends the right IC for the design.

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Unterstützte Produkte und Hardware

Berechnungstool

LM5160DNTBK-CALC LM5160 Buck Regulator Quick Start Calculator

Welcome to the LM5160 Buck Regulator Quick Start Design Tool. This stand-alone tool facilitates and assists the power supply engineer with design of a DC/DC buck regulator based on the LM5160 65V, 1.5A COT Buck Regulator. As such, the user can expeditiously arrive at an optimized design to meet the (...)

Unterstützte Produkte und Hardware

Unterstützte Produkte und Hardware

Berechnungstool

LM5160DNTFBK-CALC LM5160 Fly-Buck Regulator Quick Start Calculator

Welcome to the LM5160 Fly-Buck Regulator Quick Start Design Tool. This stand-alone tool facilitates and assists the power supply engineer with design of a DC/DC Fly-Buck regulator based on the LM5160 65V, 1.5A COT Fly-Buck Regulator. As such, the user can expeditiously arrive at an optimized design (...)

Unterstützte Produkte und Hardware

Unterstützte Produkte und Hardware

Gerberdatei

FLYBUCK FLYBACK Design Calculator

SNVC228.ZIP (1800 KB)
Referenzdesigns

PMP10532 — Isoliertes Fly-Buck-Netzteil mit Dreifach-Ausgang für industrielle SPS-Anwendungen – Referenzdesign

Das PMP10532-Referenzdesign ist eine isolierte Fly-Buck-Stromversorgung industrielle Anwendungen. Es nimmt 24 V Nenneingang auf und bietet drei isolierte Ausgänge: +5 V bei 1 A und +/–15 V bei 200 mA. Das Design eignet sich für die Bereitstellung einer isolierten Stromversorgung für MCU und (...)
Test report: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-00485 — Referenzdesign für nicht isolierte Bridge von RS-485 zu Wi-Fi mit 24-V-Wechselspannungsversorgung

TIDA-00485 uses our SimpleLink Wi-Fi CC3200 Internet-on-a-chip wireless MCU module to create a data bridge between an RS-485 network and a Wi-Fi® network. The SN65HVD72 transceiver provides the RS-485 interface with 12 kV of ESD protection and additional protection is provided on board. (...)
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-00486 — Referenzdesign für isolierte Bridge von RS-485 zu Wi-Fi mit 24-V-Wechselspannungsversorgung

TIDA-00486 uses our SimpleLink Wi-Fi® CC3200 Internet-on-a-chip wireless MCU module to create a data bridge between an RS-485 network and a Wi-Fi network. The ISO15 transceiver provides an isolated RS-485 interface with up to 2500 VRMS of isolation. The LM5160 Fly-Buck™ power supply (...)
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

PMP10572 — Isoliertes Fly-Abwärts-Leistungsmodul der Klasse 3 für PoE-Anwendungen – Referenzdesign

The PMP10572 reference design is an single output isolated Fly-Buck power supply for PoE application. It takes 48V nominal input and provides 12V 1A output. The board is designed with TPS2378(PD controller) to provide 40V-57V input votlage and 12V 1SA output power. The design features the LM5160A (...)
Test report: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-00440 — Referenzdesign zur Leckstrommessung für die Bestimmung des Isolationswiderstands

This reference design measures insulation resistance up to 100 MΩ. It has an on-board isolated 500-Vdc power supply and an isolated signal conditioning circuit to measure the leakage current. This design is useful to find leakage due to insulation breakdown in transformer and motor windings.
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-010055 — Nicht isolierte Stromversorgungsarchitektur mit Diagnose-Referenzdesign für Schutzrelaismodule

Dieses Referenzdesign beschreibt nicht isolierte Stromversorgungsarchitekturen für Schutzrelais mit analogen Ein-/Ausgangs- und Kommunikationsmodulen, die aus einem 5-, 12- oder 24-V-DC-Eingang erzeugt werden. Zur Erzeugung der Stromversorgungen verwendet das Design DC-DC-Wandler mit integriertem (...)
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

PMP15005 — Isoliertes Fly-Abwärts-Referenzdesign mit zwei Ausgängen und einer ultra-kleinen gekoppelten Indukti

PMP15005 verwendet LM5160 in einer Fly-Buck™-Topologie, wobei der primäre und der sekundäre Ausgang beide auf einen Nennwert von 5 V eingestellt sind. Die Schaltung unterstützt einen Spannungseingangsbereich von 14 V bis 36 V, ideal für die 24-V-Nenneingangsschiene. Während die Primärseite unter (...)
Test report: PDF
Schaltplan: PDF
Referenzdesigns

PMP10531 — Isolierte Fly-Buck-Bias mit Oktoausgang für IGBT-Treiber – Referenzdesign

The PMP10531 reference design is an 8-output isolated Fly-Buck power supply for IGBT gate driver in motor drive or high voltage inverter applications. It takes 24V nominal input and provides 4 isolated sets of (+15V, -8V) bias voltage. The board is designed to provide driver bias power for 6 IGBTs (...)
Test report: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-00199 — Isolierte Fly-Buck-Stromversorgung von IGBT-Gate-Treibern mit breitem Eingangsbereich für Dreiphasen

This reference design provides isolated positive and negative voltage rails required for Insulated Gate Bipolar Transistor (IGBT) gate drivers from a single 24-volt DC input supply. Utilizing a Fly-Buck™ control topology, this reference design uses a single transformer for generating power (...)
Benutzerhandbuch: PDF
Schaltplan: PDF
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
WSON (DNT) 12 Ultra Librarian

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