Analog Devices Inc. DC2784B-C

Overview

DC2784B-C from Analog Devices is a demonstration/evaluation board for the LTM4700 dual 50A µModule regulator, enabling rapid validation of high-current digital power system management in telecom and datacom infrastructure. It supports full PMBus-based configuration, telemetry polling up to 125Hz, and dual-output operation (0.5V–1.8V, 50A per channel) with ±0.5% DC output voltage accuracy and ~90% efficiency at 12V_IN→1V_OUT/100A.

For engineers reviewing the DC2784B-C datasheet, DC2784B-C pinout, DC2784B-C application, or DC2784B-C equivalent, this board delivers production-ready reference design implementation for dual-phase 100A power delivery with real-time current/voltage/temperature monitoring, fault logging with ECC, and LTpowerPlay GUI integration - critical for high-density server, AI accelerator, and storage system power architecture development.

Technical Context

The DC2784B-C implements the LTM4700 in its native 330-pin BGA package (15mm × 22mm × 7.87mm), interfacing directly to host systems via 400kHz PMBus-compliant I²C (SCL/SDA), ALERT, and FAULT pins. It exposes all RCONFIG strapping options (VOUTn_CFG, FSWPH_CFG, ASEL), analog compensation terminals (COMP0a/b, COMP1a/b), and differential remote sensing (VOSNS0±, VOSNS1±) for precision regulation.

It integrates full decoupling (22µF × 8 input, 220µF × 8 per output), thermal monitoring (TSNS0a/b, TSNS1a/b), input current sense amplifier (IIN+, IIN−), and supports polyphase load sharing via SHARE_CLK and SYNC. The board enables both pin-strapped startup (e.g., fixed VOUT, frequency, phase) and full digital servo control through EEPROM-programmable parameters.

Key Specifications

Availability

DC2784B-C is available at Aetrix Electronics and suitable for telecom baseband units, AI training rack PSUs, and enterprise SSD controller power rails requiring stable component supply, fast prototyping turnaround, and production-mappable layout practices.

Supply support for DC2784B-C 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 semiconductors, serving precision instrumentation, communications, and power management markets since 1965.

The DC2784B-C belongs to Analog Devices' µModule evaluation board family, engineered specifically to accelerate adoption of digitally managed, high-current DC/DC regulators in infrastructure-grade power systems where reliability, telemetry fidelity, and time-to-market are critical.

FAQ

What is the primary function of the DC2784B-C?

The DC2784B-C is an evaluation board for the LTM4700 dual 50A µModule regulator. It is not a standalone IC but a fully assembled, tested hardware platform that demonstrates and validates the LTM4700's digital power system management capabilities - including PMBus configuration, real-time telemetry, fault logging, and dual-output sequencing - under actual operating conditions. Engineers use the DC2784B-C to verify system integration before committing to custom PCB designs.

Does the DC2784B-C support both dual-channel and single-channel configurations of the LTM4700?

Yes, the DC2784B-C supports both configurations. It is wired to operate the LTM4700 as two independent 50A outputs (VOUT0/VOUT1) or combined as a single 100A output via parallel mode. The board includes jumpers and layout provisions for phase synchronization (SYNC), current sharing (SHARE_CLK), and coordinated soft-start - all validated per LTM4700's PolyPhase Load Sharing specification in the datasheet.

Can the DC2784B-C be used for production deployment, or is it strictly for evaluation?

The DC2784B-C is designed for evaluation and design verification, not direct production deployment. While it uses production-grade LTM4700 devices and meets thermal/EMI requirements for lab use, its layout, component selection (e.g., non-automotive-grade capacitors), and mechanical form factor are optimized for debug and characterization - not long-term field operation. For production, engineers extract validated schematics, layout rules, and BOM from the DC2784B-C to implement custom power modules.

Which software tools are compatible with the DC2784B-C for configuring the LTM4700?

The DC2784B-C is fully supported by Analog Devices' LTpowerPlay GUI, used with the DC1613 USB-to-PMBus converter. LTpowerPlay enables live adjustment of output voltage, sequencing delays, soft-start ramps, loop compensation, OV/UV/OT thresholds, and fault response behavior - all stored in the LTM4700's internal EEPROM. Firmware updates and telemetry export (CSV, log files) are also supported directly through this interface.

What thermal and electrical validation has been performed on the DC2784B-C?

Analog Devices characterizes the DC2784B-C across –40°C to 125°C ambient, confirming full 100A capability at 12V_IN→1V_OUT with ≤7.87mm height clearance and <125°C junction temperature under forced air cooling. Electrical validation includes ±0.5% DC output accuracy, <55mV dynamic load deviation (0A↔12.5A @ 10A/µs), and PMBus command compliance per SMBus 3.0 and PMBus 1.3 standards - documented in the LTM4700 datasheet Rev. B, Figures 12–24 and Tables 1–3.