Summary of DUAL 15A OR SINGLE 30A MODULE REGULATOR WITH STACKED INDUCTOR PACKAGE IS 96% PEAK EFFICIENT
Analog Devices introduces the LTM4662, a compact dual 15A or single 30A step-down µModule regulator. Featuring an exposed stacked inductor for superior thermal management, it achieves 96% peak efficiency and delivers up to 30A at 12V input. Designed for dense PCBs, it powers FPGAs, GPUs, and ASICs in applications like cloud computing and medical equipment. The device supports wide input ranges, adjustable output voltages, current sharing between two units, and remote sensing to compensate for trace impedance.
Parts used in the LTM4662 Project:
- Dual 15A or single 30A step-down µModule regulator
- BGA package with exposed stacked inductor
- MOSFETs
- DC/DC controller
- Supporting components
- Onboard remote sense amplifiers
- Selectable internal or external feedback loop compensation
- Programmed switching frequency resistor
Analog Devices announces the Power by Linear LTM4662, a dual 15A or single 30A step-down µModule regulator in a BGA package with an exposed stacked inductor for improved thermal dissipation properties. The remaining components, the MOSFETs, DC/DC controller and supporting components, are over-moulded and the complete device is housed in a 11.25mm x 15mm x 5.74mm BGA package. With limited airflow, the LTM4662 is easily cooled because the inductor transfers heat from the power stage to the surrounding ambient air. The LTM4662 performs at up to 96% peak efficiency, enabling it to deliver a full 30A continuously at 12VIN to 1.0VOUT at 70°C ambient with 200LFM airflow. With the dual regulator design, small package size and precise voltage accuracy, the LTM4662 meets the PCB area constraints of densely populated system boards to power low voltage and high current devices such as FPGAs, ASICs, microprocessors and GPUs. Applications include PCIe boards, communication infrastructure, cloud computing-based systems, as well as medical, industrial, and test & measurement equipment.
The LTM4662 operates from a 4.5V to 20V input voltage range. With 5V external bias, the device can operate from 2.375V. The output voltages are adjustable from 0.6V to 5.5V, enabling the device to generate not only low voltage for digital devices but also 2.5V, 3.3V and 5V which are commonly needed as system bus voltages. Total output voltage DC accuracy is guaranteed at ±1.5% over line, load and temperature (–40°C to 125°C). Two LTM4662s can current share to deliver 60A to a load. Moreover, the onboard remote sense amplifiers on both outputs compensate for voltage drops caused by trace impedance of the PC board due to large load current. The LTM4662 has selectable internal or external feedback loop compensation, enabling users to optimize loop stability and transient performance while minimizing the number of output capacitors.
The LTM4662’s switching frequency can be programmed from 250kHz to 1MHz with one resistor and can be synchronized to an external clock ranging from 250kHz to 1MHz for noise-sensitive applications. Protection features include overvoltage and overcurrent protection.
Read More: DUAL 15A OR SINGLE 30A ΜMODULE REGULATOR WITH STACKED INDUCTOR PACKAGE IS 96% PEAK EFFICIENT
- What is the maximum efficiency of the LTM4662?
The device performs at up to 96% peak efficiency. - How much current can the LTM4662 deliver continuously?
It can deliver a full 30A continuously at 12VIN when conditions are met. - Can two LTM4662 devices be used together?
Yes, two LTM4662s can current share to deliver 60A to a load. - What voltage range does the LTM4662 support for input?
It operates from a 4.5V to 20V input voltage range. - Does the device include protection features?
Yes, protection features include overvoltage and overcurrent protection. - How is the switching frequency adjusted?
The frequency can be programmed from 250kHz to 1MHz with one resistor. - What is the purpose of the onboard remote sense amplifiers?
They compensate for voltage drops caused by trace impedance due to large load current. - Which applications utilize the LTM4662?
Applications include PCIe boards, communication infrastructure, cloud computing systems, and medical equipment.
