Startseite Energiemanagement AC/DC- und DC/DC-Controller (externer FET)

LM5175-Q1

AKTIV

42-V-Breitband-VIN-Synchron-Aufwärtsregler mit 4 Schaltern, AEC-Q100-qualifiziert

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Selbe Funktionalität wie der verglichene Baustein bei gleicher Anschlussbelegung
LM5176-Q1 AKTIV Synchroner Abwärts-Aufwärtsregler, großer VIN-Bereich bis 55 V, 4 Schalter, AEC-Q100-qualifiziert Improved version of LM5175-Q1

Produktdetails

Vin (min) (V) 3.5 Vin (max) (V) 42 Operating temperature range (°C) -40 to 125 Topology Buck-Boost Rating Automotive Vout (min) (V) 0.8 Vout (max) (V) 55 Features Adjustable current limit, Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, UVLO adjustable Iq (typ) (µA) 1650 Duty cycle (max) (%) 100
Vin (min) (V) 3.5 Vin (max) (V) 42 Operating temperature range (°C) -40 to 125 Topology Buck-Boost Rating Automotive Vout (min) (V) 0.8 Vout (max) (V) 55 Features Adjustable current limit, Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, UVLO adjustable Iq (typ) (µA) 1650 Duty cycle (max) (%) 100
HTSSOP (PWP) 28 62.08 mm² 9.7 x 6.4
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified with the following results:
    • Device Temperature Grade 1: –40°C to
      +125°C Ambient Operating Temperature
      Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Single Inductor Buck-Boost Controller for Step-
    Up/Step-Down DC/DC Conversion
  • Wide VIN Range: 3.5 V to 42 V, 60 V Maximum
  • Flexible VOUT Range: 0.8 V to 55 V
  • VOUT Short Protection
  • High Efficiency Buck-Boost Transition
  • Adjustable Switching Frequency
  • Optional Frequency Sync and Dithering
  • Integrated 2-A MOSFET Gate Drivers
  • Cycle-by-Cycle Current Limit and Optional Hiccup
  • Optional Input or Output Average Current Limiting
  • Programmable Input UVLO and Soft-Start
  • Power Good and Output Overvoltage Protection
  • Selectable CCM or DCM with Pulse Skipping
  • HTSSOP-28 Package
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified with the following results:
    • Device Temperature Grade 1: –40°C to
      +125°C Ambient Operating Temperature
      Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Single Inductor Buck-Boost Controller for Step-
    Up/Step-Down DC/DC Conversion
  • Wide VIN Range: 3.5 V to 42 V, 60 V Maximum
  • Flexible VOUT Range: 0.8 V to 55 V
  • VOUT Short Protection
  • High Efficiency Buck-Boost Transition
  • Adjustable Switching Frequency
  • Optional Frequency Sync and Dithering
  • Integrated 2-A MOSFET Gate Drivers
  • Cycle-by-Cycle Current Limit and Optional Hiccup
  • Optional Input or Output Average Current Limiting
  • Programmable Input UVLO and Soft-Start
  • Power Good and Output Overvoltage Protection
  • Selectable CCM or DCM with Pulse Skipping
  • HTSSOP-28 Package

The LM5175-Q1 is a synchronous four-switch buck-boost DC/DC controller capable of regulating the output voltage at, above, or below the input voltage. The LM5175-Q1 operates over a wide input voltage range of 3.5 V to 42 V (60 V maximum) to support a variety of applications.

The LM5175-Q1 employs current-mode control both in buck and boost modes of operation for superior load and line regulation. The switching frequency is programmed by an external resistor and can be synchronized to an external clock signal.

The device also features a programmable soft-start function and offers protection features including cycle-by-cycle current limiting, input undervoltage lockout (UVLO), output overvoltage protection (OVP), and thermal shutdown. In addition, the LM5175-Q1 features selectable Continuous Conduction Mode (CCM) or Discontinuous Conduction Mode (DCM) operation, optional average input or output current limiting, optional spread spectrum to reduce peak EMI, and optional hiccup mode protection in sustained overload conditions.

The LM5175-Q1 is a synchronous four-switch buck-boost DC/DC controller capable of regulating the output voltage at, above, or below the input voltage. The LM5175-Q1 operates over a wide input voltage range of 3.5 V to 42 V (60 V maximum) to support a variety of applications.

The LM5175-Q1 employs current-mode control both in buck and boost modes of operation for superior load and line regulation. The switching frequency is programmed by an external resistor and can be synchronized to an external clock signal.

The device also features a programmable soft-start function and offers protection features including cycle-by-cycle current limiting, input undervoltage lockout (UVLO), output overvoltage protection (OVP), and thermal shutdown. In addition, the LM5175-Q1 features selectable Continuous Conduction Mode (CCM) or Discontinuous Conduction Mode (DCM) operation, optional average input or output current limiting, optional spread spectrum to reduce peak EMI, and optional hiccup mode protection in sustained overload conditions.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet LM5175-Q1 42 V Wide VIN Synchronous 4-Switch Buck-Boost Controller datasheet PDF | HTML 11 Apr 2016
White paper An overview of radiated EMI specifications for power supplies 05 Jun 2018
EVM User's guide LM5175 4-Switch Buck-Boost EVM User Guide (Rev. A) 04 Jun 2018
White paper An overview of conducted EMI specifications for power supplies 01 Feb 2018
Technical article Buck-boost regulator benefits automotive conducted immunity PDF | HTML 02 Mai 2017
White paper Buck-boost converter enables USB Power Delivery on the road 03 Nov 2016
Analog Design Journal Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics 21 Jul 2016
Technical article High Density PCB Layout of DC/DC Converters, Part 2 PDF | HTML 16 Sep 2015
Technical article High Density PCB Layout of DC/DC Converters, Part 1 PDF | HTML 12 Sep 2015
EVM User's guide LM5175 4-Switch Buck-Boost Converter High Density EVM 03 Mär 2015
User guide LM5175 Wide VIN 4-Switch Buck-Boost Converter High Power Evaluation Module 27 Feb 2015
White paper Wide VIN power management ICs simplify white paper (Rev. A) 19 Sep 2013

Design und Entwicklung

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

Evaluierungsplatine

LM5175EVM — LM5175EVM-Evaluierungsmodul für Abwärts/Aufwärtsregler mit großem Eingangsspannungsbereich und Einze

The LM5175EVM is a four-switch non-inverting buck-boost converter based on the LM5175 controller.  This converter is designed to operate with input voltage from 6V to 42V and provide a regulated 12V output for  load current up to 6A.  The high efficiency transition region (...)

Benutzerhandbuch: PDF
Evaluierungsplatine

LM5175EVM-HD — LM5175EVM-Evaluierungsmodul für HD-Abwärts/Aufwärtswandler mit großem Eingangsspannungsbereich und 4

The LM5175EVM-HD high power density evaluation module (EVM) is a 4-switch synchronous buck-boost DC/DC regulator that employs synchronous rectification to achieve extremely high conversion efficiency in a small footprint at 72W output power.  Operating over a wide input voltage range of 5.5V (...)

Benutzerhandbuch: PDF
Evaluierungsplatine

LM5175EVM-HP — LM5175EVM-HP Hochleistungs-Abwärts-/Aufwärtswandler mit breitem VIN-Bereich und 4 Schaltern

The LM5175EVM-HP high power EVM is fully assembled and tested platform for evaluating the operation and performance of the LM5175 4-switch buck-boost controller. The LM5175EVM-HP has an input voltage range from 6V to 36V, the output voltage is set as 12V using an external feedback resistor divider. (...)

Benutzerhandbuch: PDF
Simulationsmodell

LM5175 PSpice Transient Model (Rev. D)

SNVM731D.ZIP (163 KB) - PSpice Model
Berechnungstool

LM5175QUICKSTART-CALC LM5175 Quick Start Calculator

Welcome to the LM5175 quick-start design tool. This standalone tool facilitates and assists the power supply engineer with design of a DC/DC buck regulator based on the LM5175 buck-boost PWM controller. As such, the user can expeditiously arrive at an optimized design to meet the application (...)

Unterstützte Produkte und Hardware

Unterstützte Produkte und Hardware

Produkte
AC/DC- und DC/DC-Controller (externer FET)
LM5175 Synchroner Abwärts/Aufwärts-Controller mit breitem Eingangsspannungsbereich bis 42 V, 4 Schalter LM5175-Q1 42-V-Breitband-VIN-Synchron-Aufwärtsregler mit 4 Schaltern, AEC-Q100-qualifiziert
Software
Berechnungstool
LM5175QUICKSTART-CALC LM5175 Schnellstart-Rechner
Referenzdesigns

PMP10708 — Referenzdesign für synchronen Abwärts-/Aufwärtswandler mit 3,5 bis 36 Vin, 6,5 Vout bei 1,2 A und

PMP10708 is a 7.8W 4-switch buck-boost converter using the LM5175 controller IC. The design accepts an input voltage of 3.5Vin to 36Vin and provides an output of 6.5Vout capable of supplying 1.2A of current to the load. The design can operate as low as 3V during start-stop or other line transient (...)
Test report: PDF
Schaltplan: PDF
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
HTSSOP (PWP) 28 Ultra Librarian

Bestellen & Qualität

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  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
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