MP5920 Hot-Swap Controller and Energy Monitor QFN-32

MP5920 Hot-Swap Controller and Energy Monitor QFN-32

The MP5920 is a hot-swap protection controller designed to protect circuitry on its output from transients on its input.

Key Specifications

Features

• Easily Configure to a Single Output with Intelli-Fuses in Parallel
• Controllable Intelli-Fuse On or Off through ON
• Programmable Parameters through PMBus
• Programmable Current Limit Reference Voltage for Intelli-Fuse Current Limit Set
• Precision Current Sensing and Temperature Sensing from Intelli-Fuse
• PMBus Fast Mode Compliant
• Built-In 12-Bit ADC for Current, VIN, VOUT, or Temperature Reading
• Programmable Average Time
• Reports Power and Energy Consumption
• Available in a TQFN-32 (4mmx4mm) Package

Typical Application Circuit

Applications

• Hot Swap
• PC Cards
• Disk Drives
• Networking

Design Notes

• The current-limit threshold must stay inside the SOA of the pass device at the applied voltage, including startup inrush.
• Hot-swap inrush control is set by the slew rate on the gate or the dV/dt capacitor — too fast trips the upstream supply.
• Reverse-current blocking behaviour differs between ideal-diode and load-switch topologies; pick the one that matches the fault you are protecting against.
• Route the fault flag to a pin the firmware actually polls; a latch-off protection with no report looks like a dead board in the field.

Common Questions