LM5127-Q1

AKTIV

42-V-Dreifach-Abwärts- und Aufwärtsregler mit großem Vin für Anwendungen in der Automobilindustrie

Produktdetails

Regulated outputs (#) 3 Configurability Hardware configurable, User programmable Vin (min) (V) 0.8 Vin (max) (V) 42 Vout (min) (V) 0.8 Vout (max) (V) 42 Iout (max) (A) 30 Features Enable, Overcurrent protection, Overvoltage protection, Power good, Thermal shutdown TI functional safety category Functional Safety-Capable Step-down DC/DC controller 2 Step-up DC/DC controller 1 Iq (typ) (mA) 3 Rating Automotive Switching frequency (max) (kHz) 2200 Operating temperature range (°C) -40 to 150 Shutdown current (ISD) (typ) (µA) 2.2
Regulated outputs (#) 3 Configurability Hardware configurable, User programmable Vin (min) (V) 0.8 Vin (max) (V) 42 Vout (min) (V) 0.8 Vout (max) (V) 42 Iout (max) (A) 30 Features Enable, Overcurrent protection, Overvoltage protection, Power good, Thermal shutdown TI functional safety category Functional Safety-Capable Step-down DC/DC controller 2 Step-up DC/DC controller 1 Iq (typ) (mA) 3 Rating Automotive Switching frequency (max) (kHz) 2200 Operating temperature range (°C) -40 to 150 Shutdown current (ISD) (typ) (µA) 2.2
VQFN (RGZ) 48 49 mm² 7 x 7
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Suited for various architectures and scalable
    • Triple-output synchronous controllers
    • Flexible topology
      • CH1: boost / buck topology
      • CH2, CH3: two single phase bucks / dual-phase interleaved buck topology
    • Enable pin and PGOOD indicator per channel
    • Optional low IQ battery monitor
  • Wide operating range for automotive applications
    • 3.8-V to 42-V input operating range
    • Minimum boost input 0.8 V when BIAS ≥ 3.8 V
    • Boost output: adjustable up to 42 V
    • Buck output: fixed 3.3 V, 5 V, or adj. 0.8 - 42 V
    • Bypass operation when VSUPPLY>VLOAD (boost)
    • LDO operation when VSUPPLY ≈ VLOAD (buck)
  • Minimized battery drain
    • Shutdown current ≤ 2.8 µA
    • Automatic transition to low-IQ sleep mode
    • Battery drain in sleep
      • IQ≤ 14 µA when 3.3-V buck on
      • IQ≤ 22 µA when 3.3-V and 5-V bucks on
      • IQ≤ 32 µA when 3.3-V, 5-V bucks on and boost in bypass
    • High efficiency using strong 5-V drivers
    • Dual input VCC and VDD regulators
  • Small and cost-effective solution
    • Maximum switching frequency 2.2 MHz
    • Internal boot diode (boost)
    • Constant peak current limit
    • Supports DCR inductor current sensing
    • QFN-48 with wettable flanks
  • Avoid AM band interference and crosstalk
    • Optional clock synchronization
    • Switching frequency from 100 kHz to 2.2 MHz
    • Selectable switching mode (FPWM, diode emulation, and skip mode)
  • EMI mitigation
    • Optional programmable spread spectrum
  • Programmability and flexibility
    • Programmable wake-up and sleep threshold
    • Dynamic switching frequency programming
    • Adjustable soft start time
    • Adjustable output using 0.8 V ±1% reference
    • Adaptive dead-time control
  • Integrated protection features
    • Overcurrent protection
      • Cycle-by-cycle peak current limit
      • Optional hiccup mode protection (buck)
      • Optional latch-off mode protection (buck)
    • Overvoltage protection
    • HB-SW short protection (boost)
    • Thermal shutdown
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Suited for various architectures and scalable
    • Triple-output synchronous controllers
    • Flexible topology
      • CH1: boost / buck topology
      • CH2, CH3: two single phase bucks / dual-phase interleaved buck topology
    • Enable pin and PGOOD indicator per channel
    • Optional low IQ battery monitor
  • Wide operating range for automotive applications
    • 3.8-V to 42-V input operating range
    • Minimum boost input 0.8 V when BIAS ≥ 3.8 V
    • Boost output: adjustable up to 42 V
    • Buck output: fixed 3.3 V, 5 V, or adj. 0.8 - 42 V
    • Bypass operation when VSUPPLY>VLOAD (boost)
    • LDO operation when VSUPPLY ≈ VLOAD (buck)
  • Minimized battery drain
    • Shutdown current ≤ 2.8 µA
    • Automatic transition to low-IQ sleep mode
    • Battery drain in sleep
      • IQ≤ 14 µA when 3.3-V buck on
      • IQ≤ 22 µA when 3.3-V and 5-V bucks on
      • IQ≤ 32 µA when 3.3-V, 5-V bucks on and boost in bypass
    • High efficiency using strong 5-V drivers
    • Dual input VCC and VDD regulators
  • Small and cost-effective solution
    • Maximum switching frequency 2.2 MHz
    • Internal boot diode (boost)
    • Constant peak current limit
    • Supports DCR inductor current sensing
    • QFN-48 with wettable flanks
  • Avoid AM band interference and crosstalk
    • Optional clock synchronization
    • Switching frequency from 100 kHz to 2.2 MHz
    • Selectable switching mode (FPWM, diode emulation, and skip mode)
  • EMI mitigation
    • Optional programmable spread spectrum
  • Programmability and flexibility
    • Programmable wake-up and sleep threshold
    • Dynamic switching frequency programming
    • Adjustable soft start time
    • Adjustable output using 0.8 V ±1% reference
    • Adaptive dead-time control
  • Integrated protection features
    • Overcurrent protection
      • Cycle-by-cycle peak current limit
      • Optional hiccup mode protection (buck)
      • Optional latch-off mode protection (buck)
    • Overvoltage protection
    • HB-SW short protection (boost)
    • Thermal shutdown

The LM5127-Q1 is a full featured, wide input range three channel DC/DC controller which supports flexible topology (Boost/Buck) with peak current mode control. The device is designed as an integrated one-chip solution for the front-stage power supply in automotive infotainment, cluster, body control as well as ADAS systems. (continue on next page)

The LM5127-Q1 is a full featured, wide input range three channel DC/DC controller which supports flexible topology (Boost/Buck) with peak current mode control. The device is designed as an integrated one-chip solution for the front-stage power supply in automotive infotainment, cluster, body control as well as ADAS systems. (continue on next page)

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Technische Dokumentation

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Typ Titel Datum
* Data sheet LM5127-Q1 2.2-MHz Wide VIN Automotive Front-stage Multi-rail DC/DC datasheet (Rev. A) PDF | HTML 17 Dez 2020
EVM User's guide LM5127EVM-FLEX Evaluation Module (Rev. A) PDF | HTML 16 Dez 2020
Functional safety information LM5127-Q1 Functional Safety, FIT Rate and Failure Mode Distribution PDF | HTML 11 Dez 2020
Certificate LM5127EVM-FLEX EU RoHS Declaration of Conformity (DoC) (Rev. A) 25 Nov 2020

Design und Entwicklung

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

Evaluierungsplatine

LM5127EVM-FLEX — Evaluierungsmodul für flexible Topologie LM5127

The LM5127EVM-FLEX showcases the features and performance of the LM5127-Q1 when configured with channel 1 as a pre-boost, and channel 2 and channel 3 configured as independent buck controllers. The input voltage range is 3V to 42V. The pre-boost can operate down to 3V during input transients, (...)
Benutzerhandbuch: PDF | HTML
Simulationsmodell

LM5127-Q1 Boost PSpice Average Model

SLVMD93.ZIP (65 KB) - PSpice Model
Simulationsmodell

LM5127-Q1 Boost PSpice Transient Model

SLVMD97.ZIP (132 KB) - PSpice Model
Simulationsmodell

LM5127-Q1 Buck PSpice Average Model

SLVMD95.ZIP (62 KB) - PSpice Model
Simulationsmodell

LM5127-Q1 Buck PSpice Transient Model

SLVMD96.ZIP (114 KB) - PSpice Model
Simulationsmodell

LM5127-Q1 Dual Buck PSpice Average Model

SLVMD94.ZIP (69 KB) - PSpice Model
Simulationsmodell

LM5127-Q1 Dual Buck PSpice Transient Model

SLVMD98.ZIP (156 KB) - PSpice Model
Berechnungstool

SLVRBH2 LM5127-Q1 Controller Quick Start Calculator

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Referenzdesigns

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Dieses Referenzdesign liefert Strom für fortschrittliche Fahrerassistenzsysteme (ADAS) im Automobilbereich zur Versorgung von Kameras (8 V), Controller Area Network (CAN)-Kommunikation (5 V) und Hauptprozessor (3,3 V). Der Betrieb erfolgt über den gesamten Fahrzeugbereich, einschließlich (...)
Test report: PDF
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
VQFN (RGZ) 48 Ultra Librarian

Bestellen & Qualität

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  • Blei-Finish/Ball-Material
  • MSL-Rating / Spitzenrückfluss
  • MTBF-/FIT-Schätzungen
  • Materialinhalt
  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
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