技术特性

• Constant power foldback for FET SOA protection
• Precision (<1.0%) current and voltage measurement
• Controls inrush and faults for negative supply voltages
• Suitable for wide input range due to internal shunt regulator
• 25 mV/50 mV full-scale sense voltage
• Fine tune current limit to allow use of standard sense resistor
• Soft start inrush current limit profiling
• 1% accurate UVH and OV pins, 1.5% accurate UVL pin
• PMBus interface for control, telemetry, and fault recording
• 28-lead TSSOP
• -40°C to 105°C junction temperature (TJ) operating range

应用领域

• Telecommunication and data communication equipment
• Central office switching
• -48 V distributed power systems
• Negative power supply control
• High availability servers

产品亮点

• Constant Power Foldback.
  Maximum FET power set by a PLIM resistor divider. This eases complexity when designing to maintain FET SOA.
• Adjustable Current Limit.
  The current limit is adjustable via the ISET pin allowing for the use of a standard value sense resistor.
• 12-Bit ADC.
  Accurate voltage, current, and power measurements. Also enables calculation of energy consumption over time.
• PMBus Interface.
  PMBus fast mode compliant interface used to read back status and data registers and set warning and fault limits.
• Fault Recording.
  Latched status registers provide useful debugging information to help trace faults in high reliability systems.
• Built-In Soft Start.
  Soft start capacitor controls inrush current profile with di/dt control.