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Dual, 7.5V to 76V, Hot-Swap and Diode ORing Controller

Industry's First 7.5V to 76V, Hot-Swap and Diode ORing Controller

Product Details

Key Features

Simplified Block Diagram

Technical Docs

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Sampling:
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Key Features

  • Hot Swaps Two 7.5V to 76V Supplies
  • Integrates Low-Voltage-Drop ORing Controller
  • ±5% Accuracy Bilevel Active Current Limit/Circuit Breaker
  • Programmable Current-Limit/Circuit-Breaker Timeout
  • 10µA Power-Off Mode Current
  • Protects Up to Two FireWire Ports
  • System Power-On/Off ORing
  • Latchoff or Autoretry Power Management
  • Independent ON/OFF Control Allows Undervoltage Lockout Programming
  • Fast Load Disconnect through FOSO Input (FireWire Port)

Applications/Uses

  • Base-Station Line Cards
  • Blade Servers
  • FireWire Desktops/Notebook Ports
  • FireWire Hubs
  • Network Switches/Routers

Description

The MAX5963 dual hot-swap and diode ORing controller provides complete protection for dual-supply high availability systems. The device operates from 7.5V to 76V and provides hot-swap and low voltage-drop diode ORing functionality for two 7.5V to 76V outputs.

The MAX5963 allows for the safe insertion and removal of system line cards and FireWire® peripherals into a live backplane by providing inrush current control and active current limiting. The device controls external n-channel power MOSFETs to perform low-voltage-drop ORing, inrush current control, and current limiting functions. The current-limit function actively limits the current drawn by the load, protecting the load from a short-circuit condition. The MAX5963 also features a circuit-breaker function that disconnects the power to the load if the load current exceeds the circuit-breaker limit for a programmable circuit-breaker timeout.

The MAX5963 features an autoretry/latchoff input. In autoretry mode, the MAX5963 automatically restarts the turned-off channel after a programmable delay. In latchoff mode, the MAX5963 latches the channel off.

The MAX5963 consumes less than 10µA from the PWR supply in system power-off mode.

The MAX5963 is available in a 40-pin TQFN package (6mm x 6mm) and operates over the 0°C to +85°C upper commercial temperature range.

Simplified Block Diagram

MAX5963: Typical Operating Circuit MAX5963: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.