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LMR38020-Q1

AKTIV

SIMPLE SWITCHER® Leistungswandler 4,2-V bis 80-V, 2-A, synchroner Abwärtswandler für die Automobilin

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Datenblatt

LMR38020-Q1

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Iout (max) (A) 2 Vin (min) (V) 4.2 Vin (max) (V) 80 Type Converter Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO Fixed Control mode current mode Vout (min) (V) 1 Vout (max) (V) 75 Rating Automotive Operating temperature range (°C) -40 to 150
Iout (max) (A) 2 Vin (min) (V) 4.2 Vin (max) (V) 80 Type Converter Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO Fixed Control mode current mode Vout (min) (V) 1 Vout (max) (V) 75 Rating Automotive Operating temperature range (°C) -40 to 150
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Configured for rugged automotive applications
    • 4.2V to 80V input voltage range
    • 2A continuous output current
    • Ultra-low 40µA operating quiescent current
    • > 1.5mm distance between VIN and GND pin
    • 200kHz to 2.2MHz adjustable switching frequency
    • Frequency synchronization to external clock
    • Spread spectrum for reduced EMI
    • 97% maximum duty cycle
    • Support start-up with prebiased output
    • ±1.0% tolerance voltage reference at room temperature
    • Precision enable
    • Easy to use device with integrated compensation network enabling low BOM count
    • Integrated synchronous rectification
    • 8-pin HSOIC with PowerPAD™ integrated circuit package
    • PFM and forced PWM (FPWM) options
    • Available in 1A, LMR38010-Q1
  • Create a custom design using the LMR38020-Q1 with the WEBENCH Power Designer
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Configured for rugged automotive applications
    • 4.2V to 80V input voltage range
    • 2A continuous output current
    • Ultra-low 40µA operating quiescent current
    • > 1.5mm distance between VIN and GND pin
    • 200kHz to 2.2MHz adjustable switching frequency
    • Frequency synchronization to external clock
    • Spread spectrum for reduced EMI
    • 97% maximum duty cycle
    • Support start-up with prebiased output
    • ±1.0% tolerance voltage reference at room temperature
    • Precision enable
    • Easy to use device with integrated compensation network enabling low BOM count
    • Integrated synchronous rectification
    • 8-pin HSOIC with PowerPAD™ integrated circuit package
    • PFM and forced PWM (FPWM) options
    • Available in 1A, LMR38010-Q1
  • Create a custom design using the LMR38020-Q1 with the WEBENCH Power Designer

The LMR38020-Q1 synchronous buck converter is designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. The LMR38020-Q1 operates during input voltage dips as low as 4.2V, at nearly 100% duty cycle if needed, making the device an excellent choice for 48-V battery automotive applications and MHEV/EV systems.

The LMR38020-Q1 uses precision enable to provide flexibility by enabling a direct connection to the wide input voltage or precise control over device start-up and shutdown. The power-good flag, with built-in filtering and delay, offers a true indication of system status, eliminating the need for an external supervisor. The device incorporates pseudorandom spread spectrum for minimal EMI and switching frequency can be configured between 200kHz and 2.2MHz to avoid noise sensitive frequency bands. In addition, the frequency can be selected for improved efficiency at low operating frequency or smaller design size at high operating frequency.

The device has built-in protection features such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The LMR38020-Q1 is qualified to automotive AEC-Q100 grade 1 and is available in an 8-pin HSOIC PowerPAD integrated circuit package.

The LMR38020-Q1 synchronous buck converter is designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. The LMR38020-Q1 operates during input voltage dips as low as 4.2V, at nearly 100% duty cycle if needed, making the device an excellent choice for 48-V battery automotive applications and MHEV/EV systems.

The LMR38020-Q1 uses precision enable to provide flexibility by enabling a direct connection to the wide input voltage or precise control over device start-up and shutdown. The power-good flag, with built-in filtering and delay, offers a true indication of system status, eliminating the need for an external supervisor. The device incorporates pseudorandom spread spectrum for minimal EMI and switching frequency can be configured between 200kHz and 2.2MHz to avoid noise sensitive frequency bands. In addition, the frequency can be selected for improved efficiency at low operating frequency or smaller design size at high operating frequency.

The device has built-in protection features such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The LMR38020-Q1 is qualified to automotive AEC-Q100 grade 1 and is available in an 8-pin HSOIC PowerPAD integrated circuit package.
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Technische Dokumentation

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Typ Titel Datum
* Data sheet LMR38020-Q1 4.2V to 80V, 2A , Automotive, Synchronous SIMPLE SWITCHER Power Converter With 40µA IQ datasheet (Rev. B) PDF | HTML 23 Jan 2024
Application note Reducing Conducted EMI in a Buck Converter for 48 V Automotive Applications PDF | HTML 13 Dez 2023
Certificate LMR38025QEVM EU Declaration of Conformity (DoC) 08 Nov 2023
User guide LMR38020QEVM User's Guide PDF | HTML 05 Nov 2021
Functional safety information LMR380x0-Q1 Functional Safety, FIT Rate, Failure Mode Distribution, and Pin FMA PDF | HTML 05 Nov 2021
Certificate LMR38020QEVM EU RoHS Declaration of Conformity (DoC) 26 Okt 2021

Design und Entwicklung

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Evaluierungsplatine

LMR38020QEVM — LMR38020-Q1 SIMPLE SWITCHER®-Leistungswandler, 80 V, 2 A, synchroner Abwärtswandler, 40 µA Ruhestrom

Das Evaluierungsmodul LM38020QEVM (EVM) verwendet den LMR38020S-Q1, einen 80-V-DC-DC-Abwärtsregler, welcher mit synchroner Gleichrichtung eine hohe Wandlungseffizienz bei geringem Platzbedarf erreicht. Das EVM arbeitet über einen großen Eingangsspannungsbereich von 6 V bis 80 V und bietet einen (...)
Benutzerhandbuch: PDF | HTML
Nicht verfügbar auf TI.com
Simulationsmodell

LMR38020S-Q1 PSpice Transient Model

SNVMC93.ZIP (261 KB) - PSpice Model
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Referenzdesigns

TIDA-020061 — PD-Referenzdesign für Stromversorgung über Datenleitungen in der Automobilindustrie für Ethernet-

Dieses Referenzdesign implementiert ein Gerät mit eigener Stromversorgung (Powered Device, PD) zur Demonstration von Power over Data Lines (PoDL) in Automobilanwendungen. Das Design verwendet einen DP83TG720S-Q1 1000MBit/s Single-Pair-Ethernet (SPE)-PHY mit der Option, auf den DP83TC812S-Q1 SPE-PHY (...)
Design guide: PDF
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HSOIC (DDA) 8 Optionen anzeigen
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Bestellen & Qualität

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