Analog Devices LTC4282 | Demoboard DC2442A

Description

Demonstration circuit 2442A features the LTC®4282 highcurrent Hot Swap controller. The LTC4282 is well suitedto high power applications because the precise monitoringcapability and accurate current limiting reduces theextremes in which both loads and power supplies mustsafely operate. Nonvolatile configuration allows for flexibilityin the autonomous generation of alerts and responseto faults. The LTC4282 provides a rich set of features tosupport Hot Swap applications including:n 12- to 16-Bit ADC Monitors Current, Voltage, Powerand Energyn Controls Two Sets of Parallel MOSFETs for HighCurrent ApplicationsL, LT, LTC, LTM, Linear Technology, the Linear logo and LTpowerPlay are registeredtrademarks of Linear Technology Corporation. All other trademarks are the property of theirrespective owners.n I2C/SMBus Interfacen Nonvolatile Configuration and Logging Functionsn Generates Alerts on ADC Measurements OutsideLimitsn Software Adjustable Current Limit with Foldbackn Three General Purpose Input/OutputsAvailable in a 32-pin 5mm × 5mm QFN package, theLTC4282 is showcased on DC2442A configured in a“Low Stress Staged Start” configuration for a 12V/200Aapplication.Design files for this circuit board are available at

Features

• Allows Safe Board Insertion Into Live Backplane
• 12-/16-Bit ADC with ±0.7% Total Unadjusted Error
• Monitors Current, Voltage, Power and Energy
• Controls Two Parallel N-Channel MOSFETs for HighCurrent Applications
• Internal EEPROM for Nonvolatile Configuration
• Wide Operating Voltage Range: 2.9V to 33V
• I2C/SMBus Digital Interface (Coexists with PMBusDevices)
• 12V Gate Drive for Lower MOSFET RDS(ON)
• Programmable Current Limit with 2% Accuracy
• MOSFET Power Limiting with Current Foldback
• Continuously Monitors MOSFET Health
• Stores Minimum and Maximum Measurements
• Alerts When Alarm Thresholds Exceeded
• Input Overvoltage/Undervoltage Protection
• Three General Purpose Input/Outputs
• Internal ±5% or External Timebases
• 32-Pin 5mm × 5mm QFN Package

Typical applications

• Enterprise Servers and Data Storage Systems / Network Routers and Switches / Base Stations / Platform Management

More information

• IC product information