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Analog Devices Inc. LTP8803-1A 160A DC/DC Power µModule Regulator

Analog Devices Inc. LTP8803-1A 160A DC/DC Power µModule Regulator provides microprocessor core voltage from a 54V power distribution architecture. The regulator features remote configurability and telemetry monitoring of power management parameters over PMBus, an open standard I2C-based digital interface protocol. The Analog Devices LTP8803-1A comprises a programmable digital control system with precision mixed-signal circuitry, EEPROM, power MOSFETs, planar transformer, inductors, and supporting components. The high level of integration minimizes component count/design time and maximizes flexibility/power density. The LTP8803-1A preserves high efficiency at high conversion ratios by utilizing a resonant switching architecture that eliminates high voltage switching losses. The device is available in a 22mm × 24mm × 22mm surface-mounted open frame package.

Features

  • High efficiency at high frequency, up to 91.8% efficiency at 600kHz, 54VIN to 1.2VOUT
  • PMBus-compliant I2C serial interface
    • Monitor voltage, current, temperature, and faults
    • Internal EEPROM fault log record
    • Digitally programmable control loop
    • Program voltage, current limits, soft-start/-stop, frequency, synchronization and phasing, power-good, warnings and faults
  • Wide 45V to 65V input voltage range
  • 0.5V to 1.5V output voltage range
  • Optimized for 45V to 65VIN to 1.2VOUT
  • ±0.5% maximum DC output error with differential remote voltage sense
  • ±3% current readback accuracy
  • Parallel and current share multiple μModule ICs
  • Pin compatible with LTP8800-1A and LTP8800-4A (optimized for 0.8VOUT)
  • 22mm × 24mm × 22mm surface-mount package
  • Moisture Sensitivity Level (MSL) 3
  • RoHS compliant

Applications

  • High-current distributed power systems
  • Servers, network, and storage equipment
  • Intelligent energy efficient power regulation

Specifications

  • Input undervoltage range
    • 38V to 42V rising
    • 36V to 40V falling
  • Input overvoltage range
    • 67V to 73V rising
    • 65V to 71V falling
  • 0.1mA typical input standby current
  • 65mA to 3.87A typical input supply current range
  • 0A to 160A output current range
  • 200A typical output current limit
  • 1.182V to 1.218V regulated output voltage range
  • 1.188V to 1.212V line/load regulation range
  • 3ms typical start time
  • 10µs typical stop time
  • 30mV (typical) maximum output voltage excursion for dynamic load step
  • 50µs typical VOUT settling time to 1%
  • 88.3% to 91.7 typical efficiency range
  • Oscillator
    • 582kHz to 618kHz switching frequency range
    • 556kHz to 640kHz SYNC range
  • PMBus monitoring
    • ±3% typical output current monitor
    • ±5% typical input current monitor
    • ±1.5% typical output voltage monitor
    • ±2% typical input voltage monitor
    • ±10°C typical temperature monitor
  • 10µA maximum input leakage current
  • Control section
    • ±100mV VS common mode range
    • 0.5V to 1.5V output voltage mode range
    • 1.60V typical output overvoltage protection
  • 0.8V to 2.1V digital input threshold range
  • 10kHz to 400kHz PMBus timing serial bus frequency range
  • 0°C to +125°C operating junction temperature range
  • +245°C peak solder reflow body temperature

Typical Application

Application Circuit Diagram - Analog Devices Inc. LTP8803-1A 160A DC/DC Power µModule Regulator

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Published: 2024-11-12 | Updated: 2024-11-28