Inicio Gestión de la energía Controladores CA/CC y CC/CC (FET externo)
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Gestión de la energía
Controladores CA/CC y CC/CC (FET externo)

TPS40428

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Controlador sin accionamiento reductor síncrono PMBus de salida doble, bifásico, apilable

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TPS40428

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Detalles del producto

Vin (min) (V) 4.5 Vin (max) (V) 20 Iout (max) (A) 40 Operating temperature range (°C) -40 to 125 Control mode Voltage mode Topology Multiphase Rating Catalog Vout (min) (V) 0.6 Vout (max) (V) 5 Features Adjustable current limit, Dynamic Voltage Scaling, Enable, Frequency synchronization, PMBus, Phase Interleaving, Power good, Pre-Bias Start-Up, Remote Sense, Synchronous Rectification, UVLO adjustable, Voltage Margining Iq (typ) (µA) 18000 Duty cycle (max) (%) 46 Number of phases 2
Vin (min) (V) 4.5 Vin (max) (V) 20 Iout (max) (A) 40 Operating temperature range (°C) -40 to 125 Control mode Voltage mode Topology Multiphase Rating Catalog Vout (min) (V) 0.6 Vout (max) (V) 5 Features Adjustable current limit, Dynamic Voltage Scaling, Enable, Frequency synchronization, PMBus, Phase Interleaving, Power good, Pre-Bias Start-Up, Remote Sense, Synchronous Rectification, UVLO adjustable, Voltage Margining Iq (typ) (µA) 18000 Duty cycle (max) (%) 46 Number of phases 2
VQFN (RHA) 40 36 mm² 6 x 6
  • Smart Power Mode in Factory Default (Compatible with TI Smart Power Stage CSD95378B and Pin-for-Pin Equivalent to TPS40425 – Non-Smart Power Mode in Factory Default)
  • Single Supply Operation: 4.5 V to 20 V
  • VOUT from 0.6 V
  • Dual or Multi-Phase Synchronous Buck Controller
  • Individual High-Speed AVS Interface
  • Fast Transient Response
  • Stackable up to Four Phases
    • 2-, 3-, or 4-Phase Interleaved Phase Shifts
    • Accurate Current Sharing
  • PMBus Interface Capability
    • Margining Up/Down with 2-mV Step
    • Programmable Fault Limit and Response
    • ±0.8% VOUT
    • Accuracy Current Monitoring
    • ±3°C External Temperature Monitoring In Smart Power Mode
    • Programmable UVLO ON/OFF Thresholds
    • Programmable Soft-Start Time, Turn-On Delay, and Turn-Off Delay
  • On-Chip Non-Volatile Memory (NVM) to Store Custom Configurations
  • 0.6-V Reference Voltage with 0.5% Accuracy from –40°C to 125°C
  • Programmable ƒSW from 200 kHz to 1.5 MHz
  • Supports Pre-biased Output
  • Differential Remote Sensing
  • Synchronization to an Extermal Clock
  • OC/OV/UV/OT Fault Protection
  • 40-Pin, 6 mm × 6 mm, QFN Package
  • Smart Power Mode in Factory Default (Compatible with TI Smart Power Stage CSD95378B and Pin-for-Pin Equivalent to TPS40425 – Non-Smart Power Mode in Factory Default)
  • Single Supply Operation: 4.5 V to 20 V
  • VOUT from 0.6 V
  • Dual or Multi-Phase Synchronous Buck Controller
  • Individual High-Speed AVS Interface
  • Fast Transient Response
  • Stackable up to Four Phases
    • 2-, 3-, or 4-Phase Interleaved Phase Shifts
    • Accurate Current Sharing
  • PMBus Interface Capability
    • Margining Up/Down with 2-mV Step
    • Programmable Fault Limit and Response
    • ±0.8% VOUT
    • Accuracy Current Monitoring
    • ±3°C External Temperature Monitoring In Smart Power Mode
    • Programmable UVLO ON/OFF Thresholds
    • Programmable Soft-Start Time, Turn-On Delay, and Turn-Off Delay
  • On-Chip Non-Volatile Memory (NVM) to Store Custom Configurations
  • 0.6-V Reference Voltage with 0.5% Accuracy from –40°C to 125°C
  • Programmable ƒSW from 200 kHz to 1.5 MHz
  • Supports Pre-biased Output
  • Differential Remote Sensing
  • Synchronization to an Extermal Clock
  • OC/OV/UV/OT Fault Protection
  • 40-Pin, 6 mm × 6 mm, QFN Package

The TPS40428 device is a PMBus, synchronous buck, driverless controller. It operates in smart power mode with factory default settings, and it can operate in non-smart power mode after PMBus programing and power reboot. It can be configured for dual-output or 2-phase operation. It is also stackable up to 4 phases to support load current as high as 120 A. Interleaved phase shift for 2-. 3-, or 4-phases reduce the input and output ripples therefore reducing input and output capacitance.

The wide input voltage range can support 5-V and 12-V intermediate supply buses. The 0.5% reference voltage satisfies the need of precision voltage to the modern ASICs.

Using the PMBus standard, the TPS40428 device can program reference voltage, fault limit, UVLO threshold, soft-start time and turn-on and turn-off delay.

In addition, the device implements an accurate measurement system to monitor the output voltages, currents and temperatures for individual channels.

For all available packages, see the orderable addendum at the end of the data sheet.

The TPS40428 device is a PMBus, synchronous buck, driverless controller. It operates in smart power mode with factory default settings, and it can operate in non-smart power mode after PMBus programing and power reboot. It can be configured for dual-output or 2-phase operation. It is also stackable up to 4 phases to support load current as high as 120 A. Interleaved phase shift for 2-. 3-, or 4-phases reduce the input and output ripples therefore reducing input and output capacitance.

The wide input voltage range can support 5-V and 12-V intermediate supply buses. The 0.5% reference voltage satisfies the need of precision voltage to the modern ASICs.

Using the PMBus standard, the TPS40428 device can program reference voltage, fault limit, UVLO threshold, soft-start time and turn-on and turn-off delay.

In addition, the device implements an accurate measurement system to monitor the output voltages, currents and temperatures for individual channels.

For all available packages, see the orderable addendum at the end of the data sheet.
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Documentación técnica

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Tipo Título Fecha
* Data sheet TPS40428 Dual Output, 2-Phase, Stackable PMBus Synchronous Buck Driverless Controller with Adaptive Voltage Scaling (AVS) Bus datasheet (Rev. A) PDF | HTML 22 jul 2014
Application note Multiphase Buck Design from Start to Finish, Part 1 (Rev. B) 07 abr 2021
Application note SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC 22 feb 2016
Analog Design Journal MOSFET power losses and how they affect power-supply efficiency 26 ene 2016
Technical article Select the correct PMBus POL solution for your application PDF | HTML 03 ago 2015
EVM User's guide Using the PWR594 EVM Dual Output DC/DC Analog with PMBus Interface 30 jul 2014

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

TPS40428EVM-594 — Salida doble de EVM TPS40428 con interfaz PMBus

The TPS40428EVM evaluation module (EVM) allows users to evaluate the TPS40428. The TPS40428 is a PMBus, synchronous buck, driverless controller. It can be configured for dual-output or 2-phase operation.  The TPS40428EVM is designed to demonstrate the TPS40428 in a typical, dual-output (...)

Guía del usuario: PDF
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Software de aplicación y estructura

FUSION_DIGITAL_POWER_DESIGNER — Software de potencia digital

Fusion Digital Power™ graphical user interface (GUI) software is used to configure and monitor select Texas Instruments digital power controllers and sequencer/health monitors. The application uses the PMBus protocol to communicate with the device over serial bus by way of a TI USB adapter.
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Modelo de simulación

TPS40428 PSpice Transient Model

SLUM434.ZIP (247 KB) - PSpice Model
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Diseños de referencia

PMP11184 — Diseño de referencia de alta eficiencia y densidad de potencia de 1 V/120 A/30 A/30 A (4+1+1) con PM

PMP11184 is a chipset solution for high current ASIC core rail regulation. It utilizes TPS53647 4-phase controller for 120A high current rail, which employs  DCAP+ control for fast transient response and TI's proprietary AutoBalance for tight steady and dynamic phase-to-phase current balance. (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP10896 — Diseño de referencia de sistema de alimentación PMBus completo para interruptores Ethernet empresari

Complete PMBus power system for 3 ASIC/FPGA cores, DDR3 core memory, and auxiliary voltages found on high-performance Ethernet Switches.
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP9131 — Diseño de referencia de convertidor reductor CC-CC de 4 fases, 160 A (pico de 210 A) y alta densidad

Fixed frequency voltage mode control is used for CPU, Memory and ASIC applications where a predictable frequency and/or synchrnization to an external clock is needed.  Four high-current synchronous power stages provide the high currents and low losses needed for these applications. Multi-phase (...)
Test report: PDF
Esquema: PDF
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VQFN (RHA) 40 Ultra Librarian
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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
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

Soporte y capacitación

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