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AC/DC & DC/DC controllers (external FET)
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LM5171-Q1

VORSCHAU

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

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Datenblatt

LM5171-Q1

VORSCHAU
Datenblatt Jetzt bestellen

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 Iq (typ) (A) 0.001
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 Iq (typ) (A) 0.001
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
  • 85-V HV-port and 80-V LV-port max ratings
  • 1% Typical Accuracy of bidirectional current regulation
  • 1% Typical Accuracy of channel current monitoring
  • I 2C Interface for monitoring and diagnosis
  • Built-in 3.5V 1% reference voltage
  • Integrated 5V 10mA bias supply
  • 5-A 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
  • 85-V HV-port and 80-V LV-port max ratings
  • 1% Typical Accuracy of bidirectional current regulation
  • 1% Typical Accuracy of channel current monitoring
  • I 2C Interface for monitoring and diagnosis
  • Built-in 3.5V 1% reference voltage
  • Integrated 5V 10mA bias supply
  • 5-A 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 essential high voltage and precision elements of a dual-channel bidirectional converter for example is automotive 48-V and 12-V dual battery systems. It supports multiphase parallel operation with balanced current sharing in each phase, and it can also support 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 5-A 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 essential high voltage and precision elements of a dual-channel bidirectional converter for example is automotive 48-V and 12-V dual battery systems. It supports multiphase parallel operation with balanced current sharing in each phase, and it can also support 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 5-A 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 PDF | HTML 11 Apr 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

Design und Entwicklung

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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.
Unterstützte Produkte und Hardware

Unterstützte Produkte und Hardware

Produkte
AC/DC & DC/DC controllers (external FET)
LM5171-Q1 — Bidirektionaler 80-V-Zwei-Kanal-Abwärts-/Aufwärtsregler für die Automobilindustrie
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Dieses Referenzdesign demonstriert ein Referenzdesign für einen verschachtelten 450-W-Zweiphasen-Aufwärtswandler für eine Klasse-H-Audioverstärkeranwendung. Zur Versorgung des externen Audioverstärkers kann der Controller dem Klasse-H-Steuersignal des Verstärkers folgen und eine Ausgangsspannung (...)
Test report: PDF
Gehäuse Pins Herunterladen
HTQFP (PHP) 48 Optionen anzeigen
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