Top

Low-Voltage, Triple, Hot-Swap Controllers/Power Sequencers/Voltage Trackers

Product Details

Key Features

Parametric specs for Hot Swap Controllers
VIN (V) (min) 1
VIN (V) (max) 13.2
# Channels 3
Circuit Breaker/ Current Limit Current Limit
Circuit Breaker/Current Limit Threshold (mV) 25
Fault Condition Control Programmable
Positive/Negative Rail Positive
Package/Pins QSOP/24
Budgetary
Price (See Notes)
0
View Less

Simplified Block Diagram

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 .

Parameters

Parametric specs for Hot Swap Controllers
VIN (V) (min) 1
VIN (V) (max) 13.2
# Channels 3
Circuit Breaker/ Current Limit Current Limit
Circuit Breaker/Current Limit Threshold (mV) 25
Fault Condition Control Programmable
Positive/Negative Rail Positive
Package/Pins QSOP/24
Budgetary
Price (See Notes)
0

Key Features

  • Safe Hot Swap for +1V to +13.2V Power Supplies with Any Input Voltage (VIN_) > 2.7V and Only One VIN_ > 11.0V
  • Adjustable Circuit Breaker/Current-Limit Threshold from 25mV to 100mV
  • Configurable Tracking, Sequencing, or Independent Operation Modes
  • VariableSpeed/BiLevel Circuit-Breaker Response
  • Internal Charge Pumps Generate N-Channel MOSFET Gate Drives
  • Inrush Current Regulated at Startup
  • Autoretry or Latched Fault Management
  • Programmable Undervoltage Lockout
  • Status Outputs Indicate Fault/Safe Condition

Applications/Uses

  • Base-Station Line Cards
  • Bays (Docking Stations)
  • Hot Plug-In Daughter Cards
  • Hubs
  • Network Routers and Switches
  • Portable Computer Device
  • Power-Supply
  • RAID
  • Sequencing/Tracking
  • Solid-State Circuit Breakers

Description

The MAX5930/MAX5931 +1V to +13.2V triple hot-swap controllers provide complete protection for multisupply systems. They allow the safe insertion and removal of circuit cards into live backplanes. These devices hot swap multiple supplies ranging from +1V to +13.2V, provided one supply is at or above +2.7V and only one supply is above 11V. The input voltage rails (channels) can be configured to sequentially turn-on/off, track each other, or have completely independent operation.

The discharged filter capacitors of the circuit card provide low impedance to the live backplane. High inrush currents from the backplane to the circuit card can burn up connectors and components, or momentarily collapse the backplane power supply leading to a system reset. The MAX5930/MAX5931 hot-swap controllers prevent such problems by gradually ramping up the output voltage and regulating the current to a preset limit when the board is plugged in, allowing the system to stabilize safely. After the startup cycle is complete, on-chip comparators provide VariableSpeed/BiLevel™ protection against short-circuit and overcurrent faults, and provide immunity against system noise and load transients.

The load is disconnected in the event of a fault condition. The MAX5930/MAX5931 fault-management mode is selectable, allowing latched fault or autoretry after a fault condition.

The MAX5930/MAX5931 offer a variety of options to reduce external component count and design time. All devices integrate an on-board charge pump to drive the gates of low-cost, external N-channel MOSFETs, an adjustable startup timer, and an adjustable current limit. The devices offer integrated features like startup current regulation and current glitch protection to eliminate external timing resistors and capacitors. The MAX5931L provides an open-drain, active-low status output for each channel, the MAX5931H provides an open-drain, active-high status output for each channel, and the MAX5930 status output polarity is selectable.

The MAX5930 is available in a 24-pin QSOP package, and the MAX5931 is available in a 20-pin QSOP package. All devices are specified over the extended -40°C to +85°C temperature range.

Simplified Block Diagram

MAX5930, MAX5931: Typical Operating Circuit MAX5930, MAX5931: 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 .