Inicio Administración de potencia Reguladores de conmutación CA/CC Convertidores de CA/CC

LM25180-Q1

ACTIVO

Convertidor de retorno automotriz PSR con Vin de 42 V y MOSFET de potencia integrado de 65 V/1.5 

Detalles del producto

Rating Automotive Topology Flyback Switch current limit (typ) (A) 1.5 Iout (max) (A) 1.5 Vin (max) (V) 42 Vin (min) (V) 4.5 Features Enable, Integrated Switch, Light load efficiency, Pre-bias soft start, UVLO adjustable Control mode Peak current mode Switching frequency (min) (kHz) 12 Switching frequency (max) (kHz) 350 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 150 Duty cycle (max) (%) 82 Type Converter (Integrated Switch)
Rating Automotive Topology Flyback Switch current limit (typ) (A) 1.5 Iout (max) (A) 1.5 Vin (max) (V) 42 Vin (min) (V) 4.5 Features Enable, Integrated Switch, Light load efficiency, Pre-bias soft start, UVLO adjustable Control mode Peak current mode Switching frequency (min) (kHz) 12 Switching frequency (max) (kHz) 350 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 150 Duty cycle (max) (%) 82 Type Converter (Integrated Switch)
WSON (NGU) 8 16 mm² (4 mm × 4 mm)
  • AEC-Q100-qualified for automotive applications
    • Device temperature grade 1: –40°C to 125°C ambient temperature range
  • Designed for reliable and rugged applications
    • Wide input voltage range of 4.5 V to 42 V
    • Robust solution with only one component crossing the isolation barrier
    • ±1.5% total output regulation accuracy
    • Optional VOUT temperature compensation
    • 6-ms internal or programmable soft start
    • Input UVLO and thermal shutdown protection
    • Hiccup-mode overcurrent fault protection
    • –40°C to +150°C junction temperature range
  • Integration reduces solution size and cost
    • Integrated 65-V, 0.4-Ω power MOSFET
    • No opto-coupler or transformer auxiliary winding required for VOUT regulation
    • Low EMI operation to meet CISPR 25
  • High efficiency PSR flyback operation
    • Quasi-resonant switching in boundary conduction mode (BCM) at heavy load
    • External bias option for improved efficiency
    • Single- and multi-output implementations
  • Create a custom regulator design using WEBENCH® Power Designer
  • AEC-Q100-qualified for automotive applications
    • Device temperature grade 1: –40°C to 125°C ambient temperature range
  • Designed for reliable and rugged applications
    • Wide input voltage range of 4.5 V to 42 V
    • Robust solution with only one component crossing the isolation barrier
    • ±1.5% total output regulation accuracy
    • Optional VOUT temperature compensation
    • 6-ms internal or programmable soft start
    • Input UVLO and thermal shutdown protection
    • Hiccup-mode overcurrent fault protection
    • –40°C to +150°C junction temperature range
  • Integration reduces solution size and cost
    • Integrated 65-V, 0.4-Ω power MOSFET
    • No opto-coupler or transformer auxiliary winding required for VOUT regulation
    • Low EMI operation to meet CISPR 25
  • High efficiency PSR flyback operation
    • Quasi-resonant switching in boundary conduction mode (BCM) at heavy load
    • External bias option for improved efficiency
    • Single- and multi-output implementations
  • Create a custom regulator design using WEBENCH® Power Designer

The LM25180-Q1 is a primary-side regulated (PSR) flyback converter with high efficiency over a wide input voltage range of 4.5 V to 42 V. The isolated output voltage is sampled from the primary-side flyback voltage, eliminating the need for an optocoupler, voltage reference, or third winding from the transformer for output voltage regulation. The high level of integration results in a simple, reliable and high-density design with only one component crossing the isolation barrier. Boundary conduction mode (BCM) switching enables a compact magnetic solution and better than ±1.5% load and line regulation performance. An integrated 65-V power MOSFET provides output power up to 7 W with enhanced headroom for line transients.

The LM25180-Q1 converter simplifies implementation of isolated DC/DC supplies with optional features to optimize performance for the target end equipment. The output voltage is set by one resistor, while an optional resistor improves output voltage accuracy by negating the thermal coefficient of the flyback diode voltage drop. Additional features include an internally-fixed or externally-programmable soft start, optional bias supply connection for higher efficiency, precision enable input with hysteresis for adjustable line UVLO, hiccup-mode overload protection, and thermal shutdown protection with automatic recovery.

The LM25180-Q1 is qualified to automotive AEC-Q100 grade 1 and is available in 8-pin WSON package with 0.8-mm pin pitch and wettable flanks.

The LM25180-Q1 is a primary-side regulated (PSR) flyback converter with high efficiency over a wide input voltage range of 4.5 V to 42 V. The isolated output voltage is sampled from the primary-side flyback voltage, eliminating the need for an optocoupler, voltage reference, or third winding from the transformer for output voltage regulation. The high level of integration results in a simple, reliable and high-density design with only one component crossing the isolation barrier. Boundary conduction mode (BCM) switching enables a compact magnetic solution and better than ±1.5% load and line regulation performance. An integrated 65-V power MOSFET provides output power up to 7 W with enhanced headroom for line transients.

The LM25180-Q1 converter simplifies implementation of isolated DC/DC supplies with optional features to optimize performance for the target end equipment. The output voltage is set by one resistor, while an optional resistor improves output voltage accuracy by negating the thermal coefficient of the flyback diode voltage drop. Additional features include an internally-fixed or externally-programmable soft start, optional bias supply connection for higher efficiency, precision enable input with hysteresis for adjustable line UVLO, hiccup-mode overload protection, and thermal shutdown protection with automatic recovery.

The LM25180-Q1 is qualified to automotive AEC-Q100 grade 1 and is available in 8-pin WSON package with 0.8-mm pin pitch and wettable flanks.

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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos LM25180-Q1 42-VIN PSR Flyback DC/DC Converter with 65-V, 1.5-A Integrated MOSFET datasheet (Rev. A) PDF | HTML 3/07/2019
Application brief Optimized Excitation Power Stage for Electrically Excited Synchronous Machines (Rev. A) PDF | HTML 5/05/2026
Informe Isolated Bias Power Supply Architecture for HEV/EV Single Stage Onboard Chargers PDF | HTML 7/01/2026
Informe Isolated Bias Power Supply Architecture for HEV/EV HVLV DCDC Converters PDF | HTML 16/01/2025
Informe Isolated Bias Power Supply Architecture for HEV and EV Onboard Chargers PDF | HTML 27/11/2024
Analog Design Journal Why use PSR‐flyback isolated converters in dual‐battery mHEV systems (Rev. A) PDF | HTML 25/05/2023
Artículo técnico MHEVs: Optimizing the automotive powertrain for efficiency and cost PDF | HTML 24/05/2021
Nota sobre la aplicación LM5180 EMI Performance PDF | HTML 4/04/2021
Información sobre seguridad funcional LMx518x-Q1 Functional Safety FIT Rate and Failure Mode Distribution (Rev. A) PDF | HTML 26/06/2020
Artículo técnico How to raise regulation performance with a stacked-output PSR flyback DC/DC conver PDF | HTML 2/06/2020
Analog Design Journal How an auxless PSR-flyback converter can increase PLC reliability and density 30/09/2019
Nota sobre la aplicación DC/DC Buck Converters With Ultra-Low IQ for Industrial Battery-Pack Applications 20/02/2019
Informe An overview of radiated EMI specifications for power supplies 5/06/2018
Informe An overview of conducted EMI specifications for power supplies 1/02/2018
Application brief PSR Flyback DC/DC Converter Transformer Design for mHEV Applications 13/11/2017

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

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