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

LM5171-Q1

VORSCHAU

Bidirektionaler 80-V-Zwei-Kanal-Abwärts-/Aufwärtsregler für die Automobilindustrie

Produktdetails

Vin (min) (V) 1 Vin (max) (V) 75 Operating temperature range (°C) -40 to 150 Control mode current mode Topology Boost, Buck, Buck/Boost Rating Automotive Vout (min) (V) 3 Vout (max) (V) 80 Features Adjustable current limit, Bi-directional, Enable, Frequency synchronization, Multiple Outputs, Phase Interleaving, Synchronous Rectification, UVLO adjustable Iq (typ) (µA) 1000 TI functional safety category Functional Safety-Capable
Vin (min) (V) 1 Vin (max) (V) 75 Operating temperature range (°C) -40 to 150 Control mode current mode Topology Boost, Buck, Buck/Boost Rating Automotive Vout (min) (V) 3 Vout (max) (V) 80 Features Adjustable current limit, Bi-directional, Enable, Frequency synchronization, Multiple Outputs, Phase Interleaving, Synchronous Rectification, UVLO adjustable Iq (typ) (µA) 1000 TI functional safety category Functional Safety-Capable
HTQFP (PHP) 48 81 mm² 9 x 9
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C ambient operating range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Functional Safety-Capable
  • 85V HV-port and 80V LV-port max ratings
  • 1% Typical accuracy of bidirectional current regulation
  • 1% Typical accuracy of channel current monitoring
  • I2C interface for monitoring and diagnosis
  • Built-in 3.5V 1% reference voltage
  • Integrated 5V 10mA bias supply
  • 5A peak half-bridge gate drivers
  • Programmable or adaptive dead-time control
  • Programmable oscillator frequency up to 1MHz with optional synchronization to external clock
  • Independent channel enabling control inputs
  • Integrated both current and voltage loop control
  • Programmable cycle-by-cycle peak current limit
  • Over-temperature shutdown
  • HV and LV port overvoltage protection
  • Dynamically selectable diode emulation and forced PWM operation modes
  • Programmable soft-start timer
  • Support both multiphase and independent channel operations
  • Support urgent shutdown latch
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C ambient operating range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Functional Safety-Capable
  • 85V HV-port and 80V LV-port max ratings
  • 1% Typical accuracy of bidirectional current regulation
  • 1% Typical accuracy of channel current monitoring
  • I2C interface for monitoring and diagnosis
  • Built-in 3.5V 1% reference voltage
  • Integrated 5V 10mA bias supply
  • 5A peak half-bridge gate drivers
  • Programmable or adaptive dead-time control
  • Programmable oscillator frequency up to 1MHz with optional synchronization to external clock
  • Independent channel enabling control inputs
  • Integrated both current and voltage loop control
  • Programmable cycle-by-cycle peak current limit
  • Over-temperature shutdown
  • HV and LV port overvoltage protection
  • Dynamically selectable diode emulation and forced PWM operation modes
  • Programmable soft-start timer
  • Support both multiphase and independent channel operations
  • Support urgent shutdown latch

The LM5171-Q1 controller provides the high voltage and precision elements of a dual-channel bidirectional converter. Examples include dual battery systems. The LM5171-Q1 supports multiphase parallel operation with balanced current sharing in each phase. The LM5171-Q1 also supports independent channel bi-directional operations making it versatile as standalone controller operating as multiphase Buck/Boost or independent Buck or Boost.

The dual-channel differential current sense amplifiers and dedicated channel current monitors achieve typical accuracy of 1%. The robust 5A half-bridge gate drivers are capable of driving parallel MOSFETs for scaling more power per channel. The controller can be dynamically programmed to operate in either the diode emulation mode (DEM) or forced PWM (FPWM) mode. Versatile protection features include cycle-by-cycle current limiting, overvoltage protection at both HV and LV ports, and overtemperature protection and urgent shutdown latch.

The LM5171-Q1 controller provides the high voltage and precision elements of a dual-channel bidirectional converter. Examples include dual battery systems. The LM5171-Q1 supports multiphase parallel operation with balanced current sharing in each phase. The LM5171-Q1 also supports independent channel bi-directional operations making it versatile as standalone controller operating as multiphase Buck/Boost or independent Buck or Boost.

The dual-channel differential current sense amplifiers and dedicated channel current monitors achieve typical accuracy of 1%. The robust 5A half-bridge gate drivers are capable of driving parallel MOSFETs for scaling more power per channel. The controller can be dynamically programmed to operate in either the diode emulation mode (DEM) or forced PWM (FPWM) mode. Versatile protection features include cycle-by-cycle current limiting, overvoltage protection at both HV and LV ports, and overtemperature protection and urgent shutdown latch.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet LM5171-Q1 Dual Channel Bidirectional Controller datasheet (Rev. A) PDF | HTML 18 Jul 2023
Functional safety information LM5171-Q1 Functional Safety FIT, FMD, and Pin FMA (Rev. A) PDF | HTML 06 Okt 2023
Certificate LM5171EVM-BIDIR EU Declaration of Conformity (DoC) 05 Mai 2023
Application note U-140 Average Current Mode Control of Switching Power Supplies 05 Sep 1999

Design und Entwicklung

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

Evaluierungsplatine

LM5171EVM-BIDIR — LM5171 Evaluierungsmodul

Das Evaluierungsmodul (EVM) LM5171EVM-BIDIR ist ein zweiphasiger, verschachtelter bidirektionaler Wandler, der sich ideal für 48-V-zu-12-V-Doppelbatteriesystemanwendungen eignet. Es ist mehrphasig stapelbar mit einstellbarem Verschachtelungswinkel und ausgeglichener Stromaufteilung. Das EVM (...)
Benutzerhandbuch: PDF | HTML
Berechnungstool

LM5171-CALC LM5171-Q1 Quickstart Calculator

LM5171-Q1 Quickstart Calculator helps on design of the power stage, current loop and voltage loop. Component calculations for the controller are also included.
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Unterstützte Produkte und Hardware

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AC/DC- und DC/DC-Controller (externer FET)
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Hardware-Entwicklung
Evaluierungsplatine
LM5171EVM-BIDIR LM5171 Evaluierungsmodul
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Test report: PDF
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
HTQFP (PHP) 48 Ultra Librarian

Bestellen & Qualität

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

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