MP8620

NOT RECOMMENDED FOR NEW DESIGNS

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

NRFND Datasheet

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.

Features & Benefits

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