Texas Instruments TPS65400 統合パワー管理ユニット (PMU)
Texas Instruments TPS65400 統合型電源管理ユニット（PMU）は、小型フォームファクタと高い電力変換効率を必要とするアプリケーション向けに最適化された統合PMUで、スペース制約のある小型機器を冷却のない高い周囲動作温度下で使用できるようにします。これにより、最適化されたレギュレータの組み合わせによる中間分配バスからの単一ステージ変換が可能になり、システムレベルでの高いパワー効率を提供します。TPS65400には、PMBus-I2C互換デジタルインターフェイスが実装されています。これは、調整電圧変更ランタイム、電源シーケンス、位相インターリーブ、動作周波数、リードバック動作状態などにより、コアチップがシステム性能を最適化する際に有用です。
特徴
- 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
アプリケーション
- 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.
公開: 2014-12-08
| 更新済み: 2022-03-11