NCP81243: Multi-Phase Buck Controller for IMVP8

具体说明: The NCP81243 is a Multi-Phase buck solution is opt...
  • The NCP81243 is a Multi-Phase buck solution is optimized for Intel IMVP8 compatible CPUs with user configurations of 3/2/1+ 2/1 phases, including an option to do 4+1. The controller combines true differential voltage sensing, differential inductor DCR current sensing, input voltage feed-forward, and adaptive voltage positioning to provide accurate regulated power for Desktop applications. The control system is based on Dual-Edge pulse-width modulation (PWM) combined with DCR current sensing providing the fastest initial response to dynamic load events at reduced system cost.
  • 特性
  • Meets Intel's IMVP8 Specification
  • Current Mode Dual Edge Modulation for Fast Initial Response to Transient Loading
  • Dual High Performance Operational Error Amplifier
  • One Digital Soft Start Ramp for Both Rails
  • Dynamic Reference Injection® (Patent #US07057381)
  • Accurate Total Summing Current Amplifier(Patent #US006683441)
  • DAC with Droop Feed-forward Injection(Patent Pending)
  • Dual High Impedance Differential Voltage and Total Current Sense Amplifiers
  • Phase-to-Phase Dynamic Current Balancing
  • “Lossless” DCR Current Sensing for Current Balancing
  • Summed Compensated Inductor Current Sensing for Droop
  • True Differential Current Balancing Sense Amplifiers for Each Phase
  • Adaptive Voltage Positioning (AVP)
  • Switching Frequency Range of 200KHz – 1.5MHz
  • Startup into Pre-Charged Loads while avoiding False OVP
  • Vin Feed Forward Ramp Slope
  • Over Voltage Protection (OVP) & Under Voltage Protection (UVP)
  • Over Current Protection (OCP)
  • Dual Power Good Output with Internal Delays
  • 应用
  • Industrial Servers
  • Embedded Systems Power Management
  • 技术文档及设计资源
    供货情况和样品
    NCP81243MNTXG
  • 状况: Active
  • Compliance: Pb-free Halide free 
  • 具体说明: Multi-Phase Buck Controller for IMVP8, Industrial Temp Range IMVP8 3+2, Notebook & Desktop 2 Rail Controller
  • 封装 类型: QFN-52
  • 封装 外形: 485BE
  • MSL: 1
  • 容器 类型: REEL
  • 容器 数量: 2500
  • 库存

  • Market Leadtime (weeks):Contact Factory
  • Arrow:0
  • Digikey:>1K
  • Specifications
  • Topology: Step-Down 
  • Phases: 1/2/3 
  • Control Mode: Voltage Mode 
  • VCC Min (V): 4.75 
  • VCC Max (V): 5.25 
  • fSW Typ (kHz): 300 - 1200 
  • Package Type: QFN-52 
  • ON Semiconductor 完整版網站