LTM4664A Datasheet

• Complete 48V Input to Low Voltage Dual 30A Supply that Can Scale to 300A, Nonisolated
• Dual Analog Loops with Digital Interface for Compensation, Control and Monitoring
• Input Voltage Range: 30V to 58V
• Output Voltage Range: 0.5V to 1.2V at 30A/Channel
• ±3% Output Current Readback Accuracy (–20° to 125°C)
• 87% Efficiency for 48V to 1V at 60A, 90% at 40A
• ±0.5% Output Voltage Accuracy Over Temperature
• 400kHz PMBus-Compliant I²C Serial Interface
• 16mm × 16mm × 7.72mm BGA Package

• 48V Systems
• Computer and Networking Equipment
• Electronic Test Equipment
• Storage Systems

The LTM4664A is a complete nonisolated 48V input high efficiency step-down μModule^® regulator with dual 30A outputs. The switching controllers, power MOSFETs, inductors and supporting components are included. Only external capacitors are needed to complete the design. Operating over a 30V to 58V input voltage range, the LTM4664A supports an output voltage of 0.5V to 1.5V at up to 75W. An intermediate output at 25% • V_IN is also available. The LTM4664A product video is available on the website.

The LTM4664A dual 30A regulators utilize digitally programmable analog control loops, precision data acquisition circuitry and EEPROM with ECC. The LTM4664A’s 2-wire serial interface allows the 30A outputs to be margined, tuned and ramped up and down at programmable slew rates and sequencing delay times. True input current sense, output currents and voltages, input and output power, temperatures, uptime and peak values are all readable for Dual 30A Power System Management (PSM) channels.