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LM25122-Q1

ACTIVO

Controlador elevador síncrono con entrada de tensión amplia de 3-42 V con capacidad multifásica, cer

Se encuentra disponible una versión más nueva de este producto

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Misma funcionalidad con diferente configuración de pines que el dispositivo comparado
LM51231-Q1 ACTIVO Controlador elevador síncrono con VIN amplia de 2.2 MHz y seguimiento de tensión de salida Updated, better specs

Detalles del producto

Vin (min) (V) 3 Vin (max) (V) 42 Operating temperature range (°C) -40 to 125 Control mode current mode Topology Boost, Flyback, Forward, SEPIC Rating Automotive Vout (min) (V) 3 Vout (max) (V) 50 Features Enable, Frequency synchronization, Phase Interleaving, Synchronous Rectification Iq (typ) (µA) 4000 Duty cycle (max) (%) 100
Vin (min) (V) 3 Vin (max) (V) 42 Operating temperature range (°C) -40 to 125 Control mode current mode Topology Boost, Flyback, Forward, SEPIC Rating Automotive Vout (min) (V) 3 Vout (max) (V) 50 Features Enable, Frequency synchronization, Phase Interleaving, Synchronous Rectification Iq (typ) (µA) 4000 Duty cycle (max) (%) 100
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4
  • AEC-Q100 Qualified with the following results:
    • Device Temperature Grade 1: -40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C6
  • Maximum Input Voltage : 42 V
  • Min Input Voltage : 3 V (4.5 V for startup)
  • Output Voltage up to 50 V
  • Bypass (VOUT = VIN) Operation
  • 1.2 V Reference with ±1.0% Accuracy
  • Free-Run and Synchronizable Switching to 600 kHz
  • Peak Current Mode Control
  • Robust 3 A Integrated Gate Drivers
  • Adaptive Dead-Time Control
  • Optional Diode Emulation Mode
  • Programmable Cycle-by-Cycle Current Limit
  • Hiccup Mode Overload Protection
  • Programmable Line UVLO
  • Programmable Soft-Start
  • Thermal Shutdown Protection
  • Low Shutdown Quiescent Current: 9 µA
  • Programmable Slope Compensation
  • Programmable Skip Cycle Mode Reduces Standby Power
  • Allows External VCC Supply
  • Inductor DCR Current Sensing Capability
  • Multiphase Capability
  • Thermally Enhanced 20-Pin HTSSOP
  • AEC-Q100 Qualified with the following results:
    • Device Temperature Grade 1: -40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C6
  • Maximum Input Voltage : 42 V
  • Min Input Voltage : 3 V (4.5 V for startup)
  • Output Voltage up to 50 V
  • Bypass (VOUT = VIN) Operation
  • 1.2 V Reference with ±1.0% Accuracy
  • Free-Run and Synchronizable Switching to 600 kHz
  • Peak Current Mode Control
  • Robust 3 A Integrated Gate Drivers
  • Adaptive Dead-Time Control
  • Optional Diode Emulation Mode
  • Programmable Cycle-by-Cycle Current Limit
  • Hiccup Mode Overload Protection
  • Programmable Line UVLO
  • Programmable Soft-Start
  • Thermal Shutdown Protection
  • Low Shutdown Quiescent Current: 9 µA
  • Programmable Slope Compensation
  • Programmable Skip Cycle Mode Reduces Standby Power
  • Allows External VCC Supply
  • Inductor DCR Current Sensing Capability
  • Multiphase Capability
  • Thermally Enhanced 20-Pin HTSSOP

The LM25122 is a multiphase capable synchronous boost controller intended for high-efficiency synchronous boost regulator applications. The control method is based upon peak current mode control. Current mode control provides inherent line feed-forward, cycle-by-cycle current limiting and ease of loop compensation.

The switching frequency is programmable up to 600 kHz. Higher efficiency is achieved by two robust N-channel MOSFET gate drivers with adaptive dead-time control. A user-selectable diode emulation mode also enables discontinuous mode operation for improved efficiency at light load conditions.

An internal charge pump allows 100% duty cycle for high-side synchronous switch (Bypass operation). A 180º phase shifted clock output enables easy multi-phase interleaved configuration. Additional features include thermal shutdown, frequency synchronization, hiccup mode current limit and adjustable line undervoltage lockout.

The LM25122 is a multiphase capable synchronous boost controller intended for high-efficiency synchronous boost regulator applications. The control method is based upon peak current mode control. Current mode control provides inherent line feed-forward, cycle-by-cycle current limiting and ease of loop compensation.

The switching frequency is programmable up to 600 kHz. Higher efficiency is achieved by two robust N-channel MOSFET gate drivers with adaptive dead-time control. A user-selectable diode emulation mode also enables discontinuous mode operation for improved efficiency at light load conditions.

An internal charge pump allows 100% duty cycle for high-side synchronous switch (Bypass operation). A 180º phase shifted clock output enables easy multi-phase interleaved configuration. Additional features include thermal shutdown, frequency synchronization, hiccup mode current limit and adjustable line undervoltage lockout.

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Documentación técnica

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Tipo Título Fecha
* Data sheet LM25122-Q1 Wide-Input Synchronous Boost Controller With Multiple Phase Capability datasheet (Rev. B) PDF | HTML 27 may 2016
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 abr 2024
White paper An overview of radiated EMI specifications for power supplies 05 jun 2018
White paper An overview of conducted EMI specifications for power supplies 01 feb 2018
Application brief Improve DC/DC Regulator EMI for Free with Optimized Power Stage Layout 13 nov 2017
Technical article Get loud with a 700W automotive audio amplifier for infotainment systems PDF | HTML 15 jun 2017
More literature TI Automotive External Amplifiers (Rev. A) 03 feb 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.

Herramienta de cálculo

SNVC196 LM25122-Q1 Design Calculator

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Controladores CA/CC y CC/CC (FET externo)
LM25122-Q1 Controlador elevador síncrono con entrada de tensión amplia de 3-42 V con capacidad multifásica, cer LM5122ZA Controlador elevador síncrono con modo de corriente de VIN amplia de 3 V-65 V y capacidad multifásic
Diseños de referencia

PMP11769 — Diseño de referencia de amplificador de audio externo de 700 W para sector automotriz

This reference design contains a boost converter that provides 36.0-V @ 10.0-A continuous / 20.0-A peak from an input voltage of 9 to 16 V. It contains two premium Class-D audio amplifiers which provide 2x 175-W @ 4-Ω load (left and right channel) and 1x 350-W @ 2-Ω (subwoofer). (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP31114 — Diseño de referencia SEPIC síncrono adecuado para arranque en frío de 3 V

Este diseño de referencia utiliza el LM25122 con una tensión de salida de 5 V y una corriente de salida máxima de 5 A. El rango típico de tensión de entrada es de 6 V a 18 V. El diseño admite tensiones de entrada tan bajas como 3 V y descargas de carga de hasta 36 V. La frecuencia de conmutación F (...)
Test report: PDF
Diseños de referencia

TIDA-01610 — Diseño de referencia de fuente de alimentación de seguimiento automotriz para amplificadores de audi

This reference design implements a 10 amp, two-phase boost converter with an adjustable output voltage that can be dynamically set for voltages from 16V to 40V DC. The output voltage range allows tracking an audio signal when provided by either a PWM signal from a processor or a voltage.
Design guide: PDF
Esquema: PDF
Diseños de referencia

TIDA-01534 — Diseño de referencia de convertidor elevador bifásico sin batería para automoción

This reference design is a high power, wide input voltage range circuit that uses synchronous boost controllers in a dual-phase configuration outputting four (4) switchable 12-V rails that each can supply up to 2.5 A with diagnostic features; plus a dual synchronous buck that generates two high (...)
Design guide: PDF
Esquema: PDF
Diseños de referencia

TIDA-01553 — Diseño de referencia de VCM sin batería para automoción compatible con perfil de cigüeñal frío de 2.

This reference design is a high-current, wide input voltage range circuit that can handle engine cold crank profile down to 2.5V. The dual-output voltages are 5V and 3.3V that support up to 10A for each output. The design is suitable for an automotive off-battery infotainment application that (...)
Design guide: PDF
Esquema: PDF
Diseños de referencia

PMP21112 — Diseño de referencia de convertidor boost de doble fase con salida ajustable del 98 % de eficiencia

PMP21112 is a dual-phase boost reference design utilizing the LM25112-Q1 controller for automotive applications. This design can operate from 9V to 16V. The design has an adjustable output of 16V to 40V and capable of sourcing 10A continuous current. LM25112-Q1 has a bypass function where Vin is (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP30331 — Diseño de referencia de prerregulador de sector automotriz (SEPIC 5 Vout a 3 A)

The PMP30331 reference design is for an input voltage from 5V to 16V.  Cranking is possible for voltages as low as 4V and load dump for voltages to 36V.  This reference design uses the SEPIC topology as a cost effective alternative for 4 switch buck-boost (for low power).
Test report: PDF
Esquema: PDF
Diseños de referencia

TIDA-00699 — Diseño de referencia de suministro de potencia del extremo frontal con funcionamiento de arranque en

This solution was designed to be a broadly applicable automotive off-battery front end power supply for 10-15W systems. There is a focus on EMI/EMC testing and compliance as well to help designers satisfy the regulatory requirements associated with producing an automotive electronic subsystem.
Design guide: PDF
Esquema: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
HTSSOP (PWP) 20 Ultra Librarian

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

Soporte y capacitación

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