Texas Instruments Unidad de gestión de energía (PMU) integrada TPS65400
La unidad de gestión de energía (PMU) integrada TPS65400 deTexas Instruments es una PMU integrada y optimizada para aplicaciones que necesitan un factor de forma pequeño y gran eficacia de conversión de potencia, lo que permite equipos pequeños con limitación de espacio y con alta temperatura ambiente de funcionamiento sin enfriamiento. Aporta eficacia de potencia alta en un sistema permitiendo la conversión de una sola etapa a partir de un bus de distribución intermedia con una combinación optimizada de reguladores. El TPS65400 implementa una interfaz digital compatible con PMBus-I2C. Ayuda al chip del núcleo a optimizar el rendimiento del sistema en cuanto al tiempo de ejecución mediante el cambio de la tensión regulada, la secuencia de potencia, el intercalado de fases, la frecuencia de funcionamiento, el estado de funcionamiento de repetición, etc.
Características
- 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
Aplicaciones
- 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.
Publicado: 2014-12-08
| Actualizado: 2022-03-11