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Convertidores de CA/CC y CC/CC (FET integrado)
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TPS546C25

PRESENTACIÓN PRELIMINAR

Convertidor reductor síncrono PMBus apilable con entrada de 4 V a 18 V y 35 A

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TPS546C25

PRESENTACIÓN PRELIMINAR
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Detalles del producto

Rating Catalog Operating temperature range (°C) -40 to 125 Type Converter Iout (max) (A) 35 Vin (min) (V) 2.7 Vin (max) (V) 18 Switching frequency (min) (kHz) 400 Switching frequency (max) (kHz) 400, 1500, 2000 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Differential Remote Sense, Enable, Extended security, Forced PWM, Frequency synchronization, Over Current Protection, PMBus, Phase Interleaving, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Telemetry, UVLO adjustable, Voltage Margining Control mode D-CAP4 Vout (min) (V) 0.4 Vout (max) (V) 5.5 Iq (typ) (µA) 7500 Duty cycle (max) (%) 85
Rating Catalog Operating temperature range (°C) -40 to 125 Type Converter Iout (max) (A) 35 Vin (min) (V) 2.7 Vin (max) (V) 18 Switching frequency (min) (kHz) 400 Switching frequency (max) (kHz) 400, 1500, 2000 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Differential Remote Sense, Enable, Extended security, Forced PWM, Frequency synchronization, Over Current Protection, PMBus, Phase Interleaving, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Telemetry, UVLO adjustable, Voltage Margining Control mode D-CAP4 Vout (min) (V) 0.4 Vout (max) (V) 5.5 Iq (typ) (µA) 7500 Duty cycle (max) (%) 85
WQFN-FCRLF (VBD) 33 20 mm² 5 x 4
  • 4V to 18V input voltage without external bias
  • 2.7V to 18V input voltage with external bias
  • 0.4V to 5.5V output voltage
  • Supports 35A single-phase or 2 ×, 3 ×, or 4 × stacked configurations
  • Rdson_HS = 3.3mΩ, Rdson_LS = 1mΩ
  • 400kHz to 2MHz operating frequency (four discrete settings through pinstrap, additional settings through PMBus)
  • PMBus programmability
    • Revision 1.5 Compliant with PASSKEY security feature
    • Input voltage, output voltage, output current, temperature telemetry
    • Programmable overcurrent, overvoltage, undervoltage, overtemperature protections
    • Includes single command write function in stacked configuration
    • Extended write protection feature
    • Non-volatile memory to store configuration settings

  • Two methods for programming the output voltage

    • Internal resistor divider (discrete settings), with boot-up voltage selected by pin strapping
    • External resistor divider (continuous settings), with boot-up voltage selected by VBOOT field
  • Precision voltage reference and differential remote sense for high output accuracy
    • +/– 0.5% DAC accuracy from 0°C to 85°C junction
    • +/– 1% VOUT tolerance from –40°C to 125°C junction
  • Selectable FCCM/DCM in single phase only
  • Start-up without PMBus communication through pin strapping
  • Safe start-up into prebiased output
  • Programmable soft-start time from 0.5ms to 16ms
  • Programmable soft-stop time from 0.5ms to 4ms
  • D-CAP4 control topology with fast transient response, supporting all ceramic output capacitors
  • Programmable internal loop compensation
  • Selectable cycle-by-cycle valley current limit
  • Open-drain power-good output
  • 4V to 18V input voltage without external bias
  • 2.7V to 18V input voltage with external bias
  • 0.4V to 5.5V output voltage
  • Supports 35A single-phase or 2 ×, 3 ×, or 4 × stacked configurations
  • Rdson_HS = 3.3mΩ, Rdson_LS = 1mΩ
  • 400kHz to 2MHz operating frequency (four discrete settings through pinstrap, additional settings through PMBus)
  • PMBus programmability
    • Revision 1.5 Compliant with PASSKEY security feature
    • Input voltage, output voltage, output current, temperature telemetry
    • Programmable overcurrent, overvoltage, undervoltage, overtemperature protections
    • Includes single command write function in stacked configuration
    • Extended write protection feature
    • Non-volatile memory to store configuration settings

  • Two methods for programming the output voltage

    • Internal resistor divider (discrete settings), with boot-up voltage selected by pin strapping
    • External resistor divider (continuous settings), with boot-up voltage selected by VBOOT field
  • Precision voltage reference and differential remote sense for high output accuracy
    • +/– 0.5% DAC accuracy from 0°C to 85°C junction
    • +/– 1% VOUT tolerance from –40°C to 125°C junction
  • Selectable FCCM/DCM in single phase only
  • Start-up without PMBus communication through pin strapping
  • Safe start-up into prebiased output
  • Programmable soft-start time from 0.5ms to 16ms
  • Programmable soft-stop time from 0.5ms to 4ms
  • D-CAP4 control topology with fast transient response, supporting all ceramic output capacitors
  • Programmable internal loop compensation
  • Selectable cycle-by-cycle valley current limit
  • Open-drain power-good output

The TPS546C25 device is a highly integrated, buck converter with D-CAP4 control topology for fast transient response. All programmable parameters can be configured by the PMBus interface and stored in NVM as the new default values to minimize the external component count. Pinstrap options allow for configuration as primary or secondary, stack position and stack number, DCM (single phase only) or FCCM, overcurrent limit, fault response, internal or external feedback resistor, output voltage selection or range, switching frequency, and compensation.

The PMBus interface with 1MHz clock support gives a convenient, standardized digital interface for configuration as well as telemetry of key parameters including output voltage, output current, and internal die temperature. Response to fault conditions can be set to restart, latch off, or ignore, depending on system requirements. Two, three, and four TPS546C25 devices can be interconnected to provide up to 140A on a single output.

The device has an option to overdrive the internal 5V LDO with an external 5V supply through the VDRV and VCC pins to improve efficiency, reduce power dissipation, and enable start-up with a lower input voltage.

The TPS546C25 is a lead-free device and is RoHS compliant without exemption.

The TPS546C25 device is a highly integrated, buck converter with D-CAP4 control topology for fast transient response. All programmable parameters can be configured by the PMBus interface and stored in NVM as the new default values to minimize the external component count. Pinstrap options allow for configuration as primary or secondary, stack position and stack number, DCM (single phase only) or FCCM, overcurrent limit, fault response, internal or external feedback resistor, output voltage selection or range, switching frequency, and compensation.

The PMBus interface with 1MHz clock support gives a convenient, standardized digital interface for configuration as well as telemetry of key parameters including output voltage, output current, and internal die temperature. Response to fault conditions can be set to restart, latch off, or ignore, depending on system requirements. Two, three, and four TPS546C25 devices can be interconnected to provide up to 140A on a single output.

The device has an option to overdrive the internal 5V LDO with an external 5V supply through the VDRV and VCC pins to improve efficiency, reduce power dissipation, and enable start-up with a lower input voltage.

The TPS546C25 is a lead-free device and is RoHS compliant without exemption.
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Documentación técnica

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* Data sheet TPS546C25 4V to 18V Input, 35A , 4 × Stackable, Synchronous Buck Converter With PMBus and Telemetry datasheet PDF | HTML 12 jul 2024
EVM User's guide TPS546C25EVM-1PH 4V to 18V, 35A, Buck Converter with PMBus and Telemetry Evaluation Module User's Guide PDF | HTML 03 jul 2024

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.

Placa de evaluación

TPS546C25EVM-1PH — Módulo de evaluación TPS546C25 para convertidor buck monofásico

El TPS546C25EVM-1PH es un diseño de buck monofásico que utiliza el dispositivo TPS546C25. El TPS546C25EVM-1PH está diseñado para un bus nominal de 12 V y produce una salida regulada de 1.2 V a una corriente de carga de hasta 35 A. El TPS546C25EVM-1PH está diseñado para demostrar el funcionamiento (...)
Guía del usuario: PDF | HTML
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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
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Soporte y capacitación

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