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Texas Instruments Unità di risparmio energetico integrata (PMU) TPS65400

L'unità di gestione dell'alimentazione integrata (PMU) TPS65400Texas Instruments è una PMU integrata, ottimizzata per applicazioni che richiedono un fattore di forma ridotto ed elevata efficienza di conversione della potenza, che consente di realizzare piccole apparecchiature per spazi limitati con elevata temperatura ambiente di funzionamento senza raffreddamento. Offre alta efficienza di potenza a un livello di sistema consentendo la conversione a stadio singolo da un bus di distribuzione intermedia con una combinazione ottimizzata di regolatori. Il modello TPS65400 implementa un'interfaccia digitale compatibile PMBus-I2C. Aiuta il chip primario a ottimizzare la prestazione del sistema per runtime, modificando la tensione regolata, sequenza di alimentazione, interlacciamento di fase, frequenza di funzionamento, rilettura di stato operativo e così via.

Caratteristiche

  • Efficiency up to 95% for Each Switching Regulator
  • Switching Regulator Specifications
    • Input Voltage Range: 4.5 to 18V
    • Vout Range: 0.6V 90%Vin
    • SW1, SW2 Iout: 4A Max
    • SW3, SW4 Iout: 2A Max
  • Pre-Bias Startup Algorithm Minimizes Voltage Dip During Startup
  • Internal Undervoltage Lockout (UVLO), Overcurrent Protection (OCP), Overvoltage Protection (OVP), and Overtemperature Protection (OTP)
  • AECQ-100 Grade 1 Option
  • Thermally-Enhanced 7mm × 7mm 48-Pin, 0.5mm Pitch VQFN Package
  • Pin Accessible Features
    • Adjustable VOUT With External Feedback Resistors
    • Sequencing Control Through Precision Enable Pins for Each Switcher
    • Resistor Adjustable PWM Switching Frequency from 275kHz to 2.2MHz
    • Clock Sync Input and Clock Output
    • Soft-Start Delay Through External Capacitor
    • Current Sharing Between SW1 and SW2 and Between SW3 and SW4 Allows Support of Higher Current Needs if Required
  • PMBus Runtime Control and Status
    • Runtime Voltage Positioning Through Adjustment of VREF
    • Enable and Disable of Each Switcher
    • Fault and Status Monitoring
  • User-Configurable PMBus / I2C Options, Saved in EEPROM
    • Power Supply Turn-On and Turn-Off Sequencing
    • Sequencing can be Based on Fixed Time Delays or PGOOD Dependence
    • Initial Voltage Positioning Through VREF Configuration
    • PWM Frequency Adjustment for Each Switcher
    • Individual PWM Phase Alignment for Each Switcher to Minimize Ripple and Capacitor Size
    • Adjustable Current Limit on Each Regulator Enables Size and Cost Optimization of Inductors
    • Soft-Start Time

Applicazioni

  • Small Cellular Base Stations (BTS) (for example, Picocells and Microcells); Macro BTS (Using Multiple PMUs)
  • Power over Ethernet (PoE) Powered Communications Infrastructure Equipment
  • Automotive Infotainment and Telematics
  • Powering DSP and MCUs
  • Industrial and Factory Automation
  • Systems Requiring Small Form Factor, High-Efficiency, High-Ambient Operating Temperature, and Flexible Power Management

Datasheets

Related Development Tool

Texas Instruments TPS65400EVM-678 Evaluation Module (EVM) is a fully assembled and tested circuit for evaluating the TPS65400. SW1 and SW2 on the evaluation board support a maximum DC output current of 4A each, and SW3 and SW4 support 2A each. The EVM contains input and output connectors as well as control jumpers to ease evaluation of device features. It also has EN1, EN2 and EN_SW jumps to enable and disable buck and power switch.

Pubblicato: 2014-12-08 | Aggiornato: 2022-03-11