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

LM51772

AKTIV

55 V-Abwärts-/Aufwärtsregler mit großem VIN-Bereich und I2C-Schnittstelle

Produktdetails

Vin (min) (V) 3.5 Vin (max) (V) 55 Operating temperature range (°C) -40 to 125 Topology Buck-Boost Rating Catalog Vout (min) (V) 3.3 Vout (max) (V) 55 Features Adjustable UVLO, Adjustable current limit, Dynamic Voltage Scaling, Enable, Extended power range, Frequency synchronization, I2C, Light Load Efficiency, Load Disconnect, Power good, Spread Spectrum, Synchronous Rectification, Tracking, USB C/PD compatible, UVLO adjustable Iq (typ) (µA) 60 Duty cycle (max) (%) 100
Vin (min) (V) 3.5 Vin (max) (V) 55 Operating temperature range (°C) -40 to 125 Topology Buck-Boost Rating Catalog Vout (min) (V) 3.3 Vout (max) (V) 55 Features Adjustable UVLO, Adjustable current limit, Dynamic Voltage Scaling, Enable, Extended power range, Frequency synchronization, I2C, Light Load Efficiency, Load Disconnect, Power good, Spread Spectrum, Synchronous Rectification, Tracking, USB C/PD compatible, UVLO adjustable Iq (typ) (µA) 60 Duty cycle (max) (%) 100
VQFN (RHA) 40 36 mm² 6 x 6
  • Input range from 0V (V(BIAS) ≥ 3.5V) to 55V
  • Output voltage 1V to 55V
  • Dynamical Vo programming via I2C from:
    • 3.3V up to 48V in 20mV monotonous steps
    • 1V up to 24V in 10mV monotonous steps
  • Peak current regulation control
  • Small voltage transition ripple over all operating modes
  • Dynamic output voltage tracking (digital PWM tracking input, analog tracking input)
    • Via I2C interface programming
  • Shut down quiescent current 3µA
  • Operating quiescent current 60µA
  • DRV pin for external FET control
  • Operation mode selection for high efficiency in light load and high load conditions:
    • Power save mode (burst/µSleep)
    • Automatic/programmable conduction mode
  • Integrated high voltage supply LDO
  • Auxiliary high voltage LDO/reference
  • Integrated full-bridge gate drive
    • 2A peak current capability
    • Bootstrap over and under-voltage protection
    • Integrated boot-strap diode
  • Fixed frequency independent from operating mode (boost, buck-boost, buck)
    • Forced PWM mode selectable
    • Switching frequency from 100kHz to 2.2MHz
    • External clock synchronization and clock output
  • Spread spectrum operation selectable
  • Average input or output current sensor
    • Programmable from 0.5A (5mV) to 7A (70mV) in 50mA (500µV) steps
    • ISET pin selectable
  • I2C Interface readout of monitoring features
  • Create a custom design using the LM51772 with the WEBENCH® Power Designer

  • Input range from 0V (V(BIAS) ≥ 3.5V) to 55V
  • Output voltage 1V to 55V
  • Dynamical Vo programming via I2C from:
    • 3.3V up to 48V in 20mV monotonous steps
    • 1V up to 24V in 10mV monotonous steps
  • Peak current regulation control
  • Small voltage transition ripple over all operating modes
  • Dynamic output voltage tracking (digital PWM tracking input, analog tracking input)
    • Via I2C interface programming
  • Shut down quiescent current 3µA
  • Operating quiescent current 60µA
  • DRV pin for external FET control
  • Operation mode selection for high efficiency in light load and high load conditions:
    • Power save mode (burst/µSleep)
    • Automatic/programmable conduction mode
  • Integrated high voltage supply LDO
  • Auxiliary high voltage LDO/reference
  • Integrated full-bridge gate drive
    • 2A peak current capability
    • Bootstrap over and under-voltage protection
    • Integrated boot-strap diode
  • Fixed frequency independent from operating mode (boost, buck-boost, buck)
    • Forced PWM mode selectable
    • Switching frequency from 100kHz to 2.2MHz
    • External clock synchronization and clock output
  • Spread spectrum operation selectable
  • Average input or output current sensor
    • Programmable from 0.5A (5mV) to 7A (70mV) in 50mA (500µV) steps
    • ISET pin selectable
  • I2C Interface readout of monitoring features
  • Create a custom design using the LM51772 with the WEBENCH® Power Designer

The LM51772 is a four switch Buck-Boost controller. It provides a regulated output voltage if the input voltage is higher, equal or lower than the adjusted output voltage. In power save mode the device supports very high efficiency over the complete operation range of the output. The LM51772 runs at a fixed switching frequency, which can be set via the RT/SYNC pin. The switching frequency remains constant during buck, boost and buck-boost operation in forced PWM. The external compensation pin allows very fast transient response for different applications. The device maintains small mode transition ripple over all operating modes. The output voltage and device configurations can be dynamically programmed via the integrated I2C interface. The integrated and optional high-side current sensor features an accurate output or input current limitation. The average current limit of the LM51772 is also configurable through the I2C interface.

The LM51772 is a four switch Buck-Boost controller. It provides a regulated output voltage if the input voltage is higher, equal or lower than the adjusted output voltage. In power save mode the device supports very high efficiency over the complete operation range of the output. The LM51772 runs at a fixed switching frequency, which can be set via the RT/SYNC pin. The switching frequency remains constant during buck, boost and buck-boost operation in forced PWM. The external compensation pin allows very fast transient response for different applications. The device maintains small mode transition ripple over all operating modes. The output voltage and device configurations can be dynamically programmed via the integrated I2C interface. The integrated and optional high-side current sensor features an accurate output or input current limitation. The average current limit of the LM51772 is also configurable through the I2C interface.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet LM51772 55V 4-Switch Buck-Boost Controller with I2 C interface datasheet (Rev. B) PDF | HTML 21 Jun 2024
Application brief Current Monitoring with Positive and Negative Currents on LM5177x Devices (Rev. A) PDF | HTML 25 Nov 2024
Application note Parallel Operation of the Buck-Boost Converters Using LM51772 Buck-Boost Controller PDF | HTML 27 Aug 2024
Application note Layout Optimization of 4-Switch Buck-Boost Converters PDF | HTML 05 Sep 2023

Design und Entwicklung

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

Evaluierungsplatine

LM51772EVM-HP — LM51772 Evaluierungsmodul

Das LM51772EVM-HP zeigt ein flexibles, leistungsstarkes Abwärts-/Aufwärts-Design unter Verwendung des Abwärts-/Aufwärts-Controllers LM51772 mit großem VIN-Eingangsspannungsbereich. Das Evaluierungsmodul ist für den Betrieb im Eingangsspannungsbereich von 9 V bis 48 V konfiguriert und bietet einen (...)

Benutzerhandbuch: PDF | HTML
Evaluierungsplatine

USB2ANY — USB2ANY-Schnittstellenadapter

The USB2ANY interface adapter is a tool intended to allow a computer to control an evaluation module (EVM) via a USB connection. USB2ANY supports multiple popular protocol interfaces and provides 3.3-V and 5-V power supplies.

Benutzerhandbuch: PDF
GUI für Evaluierungsmodul (EVM)

LM51772-CONFIGURATON-GUI LM51772 GUI for configuration via I2C

Graphical User Interface (GUI) to configure the LM51772 via I2C. You can use the Launch button for using the GUI online via a browser or one of the download files to operate the GUI offline
Unterstützte Produkte und Hardware

Unterstützte Produkte und Hardware

Produkte
AC/DC- und DC/DC-Controller (externer FET)
LM51772 55 V-Abwärts-/Aufwärtsregler mit großem VIN-Bereich und I2C-Schnittstelle
Hardware-Entwicklung
Evaluierungsplatine
LM51772EVM-HP LM51772 Evaluierungsmodul
Start Download-Optionen
Simulationsmodell

LM51772EVM-HP PCB Layout

SLVME54.ZIP (2229 KB) - TINA-TI Reference Design
Berechnungstool

LM51772-QUICKSTART-CALC LM51772 BuckBoost Quickstart Calculator Tool

LM51772 BuckBoost Quickstart Calculator Tool. This standalone tool facilitates and assists the power supply engineer with the design of a DC/DC buck-boost converter based on the LM51772.
Unterstützte Produkte und Hardware

Unterstützte Produkte und Hardware

Produkte
AC/DC- und DC/DC-Controller (externer FET)
LM51772 55 V-Abwärts-/Aufwärtsregler mit großem VIN-Bereich und I2C-Schnittstelle
Hardware-Entwicklung
Evaluierungsplatine
LM51772EVM-HP LM51772 Evaluierungsmodul
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
VQFN (RHA) 40 Ultra Librarian

Bestellen & Qualität

Beinhaltete Information:
  • RoHS
  • REACH
  • Bausteinkennzeichnung
  • Blei-Finish/Ball-Material
  • MSL-Rating / Spitzenrückfluss
  • MTBF-/FIT-Schätzungen
  • Materialinhalt
  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
Beinhaltete Information:
  • Werksstandort
  • Montagestandort

Support und Schulungen

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