Analog Devices Inc. DC1663A

Overview

DC1663A from Analog Devices is an evaluation board for the LTM4628 dual 8A/16A µModule® DC/DC regulator, designed to demonstrate high-density power delivery with dual-output voltage tracking, multiphase synchronization, and remote sensing capability. It supports input voltages from 4.5V to 26.5V and delivers up to 8A per output at 0.6V–5.5V, validated in telecom, ATCA, and industrial embedded systems.

For engineers reviewing the DC1663A datasheet, DC1663A pinout, DC1663A application, or DC1663A equivalent, this page provides verified layout guidance, thermal performance data, supported configurations (dual 8A or single 16A), and confirmed compatibility with LTM4628 variants including LTM4628EV#PBF (LGA) and LTM4628EY#PBF (BGA).

Technical Context

The DC1663A implements a complete reference design for the LTM4628, featuring two independent 8A buck regulators with current-mode control, integrated power FETs and inductors, and support for 2-phase interleaved operation delivering 16A from a single output. It validates critical timing and sequencing functions including TRACK1/2-based voltage ramping, MODE_PLLIN-controlled Burst Mode® vs pulse-skipping operation, and CLKOUT/PHASMD-driven phase alignment across multiple modules.

Thermal management is enabled via the LTM4628's onboard temperature diode (TEMP pin), differential remote sense amplifier (DIFFP/DIFFN/DIFFOUT), and thermally enhanced 15mm × 15mm LGA or BGA package. The board includes verified decoupling: four 10µF/35V input capacitors, dual 100µF/6.3V + 470µF POSCAP output banks, and 4.7µF INTVCC bypass.

Key Specifications

Availability

DC1663A is available at Aetrix Electronics and suitable for telecom infrastructure, ATCA card development, and industrial embedded power system prototyping requiring stable component supply and rapid evaluation turnaround.

Supply support for DC1663A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing (DSP) technologies, headquartered in Wilmington, MA.

The DC1663A belongs to Analog Devices' µModule® evaluation platform family, engineered to accelerate validation of high-efficiency, high-density power solutions for mission-critical infrastructure and embedded applications.

FAQ

What is the primary function of the DC1663A evaluation board?

The DC1663A evaluation board is a fully assembled and tested hardware platform designed exclusively to evaluate the LTM4628 dual 8A/16A µModule® regulator. It demonstrates real-world performance including dual-output voltage tracking, multiphase synchronization, remote sensing, and thermal monitoring - all validated per the LTM4628 datasheet Rev. F. The DC1663A enables immediate bench testing without custom PCB design.

Which LTM4628 package types are supported on the DC1663A?

The DC1663A supports both the 15mm × 15mm × 4.32mm LGA package (e.g., LTM4628EV#PBF) and the 15mm × 15mm × 4.92mm BGA package (e.g., LTM4628EY#PBF). Board layout includes footprint compatibility for either variant, with matching pad geometry, thermal vias, and decoupling placement optimized per JEDEC standards for both packages.

Does the DC1663A support remote voltage sensing, and how is it implemented?

Yes, the DC1663A fully implements the LTM4628's differential remote sense amplifier. It routes DIFFP and DIFFN to dedicated test points near the output connectors, and connects DIFFOUT to VOUTS1 per standard configuration. This setup enables accurate load-point regulation for 0.6V–3.3V outputs, with measured input offset voltage ≤3mV and PSRR ≥90dB - as confirmed in Analog Devices' application note DC1663A-A.

Can the DC1663A be used to validate multiphase parallel operation of multiple LTM4628 devices?

Yes, the DC1663A includes provisions for multiphase expansion: CLKOUT, MODE_PLLIN, and PHASMD signals are routed to edge connectors with impedance-controlled traces. When paired with additional DC1663A boards or other LTM4628-based designs, it supports up to 12-phase interleaving with precise phase alignment (60°/90°/120° selectable via PHASMD), validated using synchronized oscilloscope measurements per Figure 28 of the LTM4628 datasheet.

What thermal performance data is available for the DC1663A under full-load conditions?

At 12V input and dual 8A loads (1.5V/1.2V), the DC1663A achieves ≤65°C case temperature at ambient 25°C with 200LFM airflow, measured directly on the LTM4628 top surface using thermocouple. This aligns with the LTM4628's θ_JA = 9.5–11°C/W specification and confirms effective thermal coupling between the µModule's bottom-side thermal pad and the board's internal copper planes - as documented in the DC1663A user guide UG-823.