Analog Devices Inc. ADM1278 Hot Swap Controller with PMBus™ Interface

Analog Devices Inc. ADM1278 Hot Swap Controller with PMBus™ Interface allows a circuit board to be removed from or inserted into a live backplane. ADM1278 also features current, voltage, and power readback via an integrated 12-bit analog-to-digital converter (ADC), accessed using a PMBus interface. The load current is measured using an internal current sense amplifier that measures the voltage across a sense resistor in the power path via the HS+ and HS− pins. A default current limit of 20mV is set, but this limit can be adjusted, if required, using a resistor divider network from the internal reference voltage to the ISET pin. The ADM1278 Hot Swap Controller is ideal for servers, power monitoring and control/power budgeting, central office equipment, and telecommunication and data communication equipment.

Features

  • ±0.3% accurate, 12-bit ADC for IOUT, VIN, VOUT, and temperature
  • 320ns response time to short circuit
  • Shutdown on detection of FET health fault
  • Split hot swap and power monitor inputs to allow additional external ADC filtering
  • Constant power foldback for tighter FET SOA protection
  • Remote temperature sensing with programmable warning and shutdown thresholds
  • Resistor-programmable 5mV to 25mV VSENSE current limit
  • Programmable start-up current limit
  • 1% accurate UV and OV thresholds
  • Reports power and energy consumption over time
  • Peak detect registers for current, voltage, and power
  • PROCHOT power throttling capability
  • PMBus fast mode compliant interface
  • 5mm × 5mm, 32-lead LFCSP

Applications

  • Servers
  • Power monitoring and control / power budgeting
  • Central office equipment
  • Telecommunication and data communication equipment

Typical Application Circuit

Application Circuit Diagram - Analog Devices Inc. ADM1278 Hot Swap Controller with PMBus™ Interface
Publicado: 2014-10-16 | Actualizado: 2022-03-11