MAX5961
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MAX5961

0 to 16V, Quad, Hot-Swap Controller with 10-Bit Current and Voltage Monitor

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Industry's First Quad, Hot-Swap Controller Operates Down to 0V and Integrates a Voltage and Current Monitor

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 1
1ku List Price
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Features
  • Four Independent Hot-Swap Controllers Protect from 0 to 16V (Provided IN ≥ 2.7V)
  • 10-Bit ADC Monitors Voltage and Current of Each Channel
  • Circular Buffer Stores 5ms of Current and Voltage Measurements
  • Four Independent Internal Charge Pumps Generate n-Channel MOSFET Gate Drives
  • Internal 500mA Gate Pulldown Current for Fast Shutdown
  • VariableSpeed/BiLevel™ Circuit-Breaker Protection
  • Alert Output Indicates Undervoltage Warning, Undervoltage Critical, Overvoltage Warning, Overvoltage Critical, and Overcurrent Warning for Each Channel
  • Independent Power-Good Outputs
  • Autoretry or Latched Fault Management
  • 400kHz I²C Interface
  • 7mm x 7mm 48-Pin TQFN Package
Additional Details
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The MAX5961 0 to 16V, quad, hot-swap controller provides complete protection for systems with up to four distinct supply voltages. The device allows the safe insertion and removal of circuit cards into live backplanes. The MAX5961 is an advanced hot-swap controller that monitors voltage and current with an internal 10-bit ADC. The device provides two levels of overcurrent circuit-breaker protection; a fast-trip threshold for a fast turn-off, and a lower slow-trip threshold for a delayed turn-off. The maximum overcurrent circuit-breaker threshold range is set independently for each channel with a trilevel input (ILIM_) or by programming though an I²C interface.

The internal 10-bit ADC is multiplexed to monitor the output voltage and current of each hot-swap channel. The total time to cycle through all the eight measurements is 100µs (typ). Each 10-bit value is stored in an internal circular buffer so that 50 past samples of each signal can be read back through the I²C interface at any time or after a fault condition.

The MAX5961 can be configured as four independent hot-swap controllers, hot-swap controllers operating in pairs, or as a group of four hot-swap controllers.

The device also includes five digital comparators per hot-swap channel to implement overcurrent warning, two levels of overvoltage detection, and two levels of undervoltage detection. The limits for overcurrent, overvoltage, and undervoltage are user-programmable. When any of the measured values violates the programmable limits, an external active-low ALERT signal is asserted. In addition to the active-low ALERT signal, depending on the selected operating mode, the MAX5961 can deassert a power-good signal and/or turn-off the external MOSFET.

The MAX5961 is available in a 48-pin thin QFN package and operates over the -40°C to +85°C extended temperature range.

Applications

  • ASICs
  • Disk Drives
  • PCI Express® Hot Plug
  • Servers
  • Storage Systems
Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA). To request an NDA, click here.
Part Models 1
1ku List Price
price unavailable

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX5961ETM+T
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAX5961EVKIT

Evaluation Kit for the MAX5961

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MAX5961EVKIT

Evaluation Kit for the MAX5961

Evaluation Kit for the MAX5961

Features and Benefits

  • Safely Hot Swaps Four Independent 0V to 16V Power Supplies After Power-Up
  • 4-Layer, 2oz Copper PCB Designed for 20A Loads
  • Multiple Output Signals with LEDs for Visual Monitoring
  • Configurable Hot-Swap Channel Undervoltage Lockout Thresholds
  • On-Board I²C Communication Interface Circuitry and USB Interface
  • Windows 2000/XP/Vista (32-Bit)-Compatible Evaluation Software
  • Fully Assembled and Tested

Product Detail

The MAX5961 evaluation kit (EV kit) circuit demonstrates the MAX5961 quad-channel hot-swap controller that provides voltage and current monitoring. The EV kit circuitry features several jumpers to configure the MAX5961 initial settings. The input voltage range, output voltage limit(s), output current limit(s), and fault-management features are all software programmable. Each channel's undervoltage lockout threshold is also configurable by installing external components. Active-low FAULT_, PG_, and active-low ALERT output signals are provided for circuit monitoring during evaluation.

The EV kit includes Windows® 2000/XP/Vista® (32-bit)-compatible software that provides a simple graphical user interface (GUI) for exercising the MAX5961 features.

Applications

  • ASICs
  • Disk Drives
  • PCI Express® Hot Plug
  • Servers
  • Storage Systems

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