16V, 25A Synchronous Step-down Converter with Phase Interleaving and External Soft Start

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Product Description

The MP8620 is a fully integrated step-down converter with internal power MOSFETs. It achieves 25A continuous output current over a wide input supply range with excellent load and line regulation. The MP8620 can be configured and optimized as a single phase or a multi-phase solution to support high current (50A-100A) applications. This provides the flexibility and at the same time meets the efficiency requirement with less components. Average current mode control scheme is employed in the MP8620.  The device operates reliably even with low duty cycle and noisy environment. Fault condition protection include cycle¬-by¬-cycle current limit, thermal shutdown, output short-circuit, output under voltage and output over voltage protection. The MP8620 requires a minimum number of readily available standard external components and is available in a 6mm x 6mm flip-chip QFN package. The MP8620 is suitable for a wide range of space-constraint applications, including point of load regulation for FPGAs, ASICs, DDR memory power, and power systems for networking and data centers.


Product Features

  • Supports Multi-Phase Configuration up to 100A
  • Wide 6V to 16V Operating Input Range 25A Output Current
  • 3mΩ/12mΩ Internal Power MOSFET Switches Deliver up to 95% Efficiency
  • Synch Output to Drive Another Regulator in 90o, 120o, 180o Phase-Shift Operation
  • Synch from 300kHz to 900kHz External Clock
  • Default 600kHz Frequency, Programmable from 300kHz to 1.5MHz
  • Feedback Voltage Accuracy: 1.0%
  • Programmable Soft-Start
  • Startup Tracking
  • EN and Power Good for Power Sequencing
  • Cycle-by-Cycle Over Current Protection, SCP, OCP, OVP, UVP and Thermal Shutdown
  • Output Adjustable from 0.8V
  • Stable with Low ESR Output Ceramic Capacitors
  • Available in a 6x6mm QFN Package


  • fsw (max) (kHz)600
  • Vin (min) (V)6
  • Vin (max) (V)16
  • Iout (max) (A)25
  • Max Duty Cycle (%)0.9
  • Vfb (typ) (V)0.8
  • Iq (typ) (mA)2
  • Regulated Outputs1
  • Vout (min) (V)0.8
  • GradeCatalog
  • PackageQFN-36 (6x6)
  • Control ModeCurrent Mode
  • Common FeaturesExternal Soft Start
  • Special FeaturesExternal Frequency Sync, Phase Interleaving, Soft Stop

Reference Materials