Introduction to the LTM4628 Dual 8A or Single 16A DC/DC μModule Regulator-EEWORLD

Collect

describe

The LTM ^® 4628 is a complete dual channel 8A output switch mode DC/DC power supply and can be easily configured to provide a single two-phase 16A output. The switch controller, power FETs, inductor and all supporting components are built into the package. The LTM4628 operates over an input voltage range of 4.5V to 26.5V and supports two output voltages ranging from 0.6V to 5.5V (set by a single external resistor). The device's high efficiency design can provide 8A of continuous current to each output. Only a small number of input and output capacitors are required.

The device supports frequency synchronization, multiphase operation, burst mode operation, and output voltage tracking for power rail sequencing. It has an on-board temperature diode that monitors the device temperature. The use of high switching frequency and a current mode architecture enables fast transient response to line and load changes without sacrificing stability.

Fault protection features include overvoltage and overcurrent protection. The power module is available in a space-saving and thermally enhanced 15mm x 15mm x 4.32mm LGA package. The LTM4628 is lead-free and RoHS compliant.

Features

Complete independent dual-channel power supply

Single channel 16A or dual channel 8A output

Wide input voltage range: 4.5V to 26.5V

Output range: 0.6V to 5.5V

± 1.5% Total DC Output Error

Differential Remote Sense Amplifier

Current mode control / fast transient response

Adjustable switching frequency

Overcurrent foldback protection

Use multiple LTM4628s to achieve multi-phase parallel current sharing

Frequency synchronization

Internal temperature detection diode output

Optional Burst Mode (BurST Mode?) operation

Soft start/voltage tracking

Output overvoltage protection

Low profile (15mm x 15mm x 4.32mm) LGA package

Encapsulation

Typical Applications

application

Telecommunications and network equipment

Storage and ATCA cards

Industrial equipment

Reference address：Introduction to the LTM4628 Dual 8A or Single 16A DC/DC μModule Regulator

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