Analog Devices Inc. DC2088A

Overview

DC2088A from Analog Devices is a dual-output PolyPhase® synchronous step-down DC/DC controller evaluation board for the LTC3880/LTC3880-1 digital power system management ICs. It supports 4.5V–24V input, delivers up to 15A on VOUT0 (3.3V) and 20A on VOUT1 (1.8V), features PMBus/I²C interface, real-time telemetry (VIN, IIN, VOUT, IOUT, temperature), and AEC-Q100-qualified operation for automotive-grade power systems.

For engineers reviewing the DC2088A datasheet, DC2088A pinout, DC2088A application, or DC2088A equivalent, this board enables rapid validation of digital power sequencing, voltage margining, fault logging, phase-current sharing, and closed-loop servo control using LTpowerPlay™ GUI - critical for telecom, datacom, and high-reliability embedded power designs.

Technical Context

The DC2088A implements the LTC3880's constant-frequency current-mode control architecture with two independent 4-phase capable channels, supporting up to 6 total phases via SHARE_CLK synchronization. It integrates onboard 0.56µH and 1.0µH shielded inductors, low-DCR sense resistors, and dual N-channel MOSFET gate drivers (TG0/BG0 and TG1/BG1) optimized for high-efficiency 1.8V/3.3V point-of-load conversion.

Telemetry is enabled through the LTC3880's integrated 16-bit ADC and internal EEPROM with ECC, allowing readback of VIN, IIN, VOUT0/VOUT1, IOUT0/IOUT1, internal/external temperature (TSNS0/TSNS1), and fault status via PMBus commands. The board supports programmable soft-start, sequencing, OV/UV protection, and frequency synchronization from 250kHz to 1MHz.

Key Specifications

Availability

DC2088A is available at Aetrix Electronics and suitable for telecom power shelves, automotive ADAS domain controllers, and high-density server VRMs requiring stable component supply, full digital power system management, and production-ready evaluation capability.

Supply support for DC2088A 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, industrial, and automotive markets.

The DC2088A belongs to Analog Devices' Power by Linear™ evaluation platform family, designed specifically to accelerate development and validation of digitally managed multiphase DC/DC power systems using LTC3880-series controllers.

FAQ

What is the primary function of the DC2088A evaluation board?

The DC2088A evaluation board is a fully assembled and tested hardware platform for the LTC3880/LTC3880-1 dual-output digital polyphase DC/DC controllers. It enables engineers to evaluate real-time PMBus-based configuration, telemetry readback (VIN, VOUT, IOUT, temperature), fault response, sequencing, and closed-loop digital servo control - all without custom PCB design. DC2088A directly demonstrates the capabilities of the underlying LTC3880 IC in production-relevant operating conditions.

Does DC2088A support AEC-Q100 automotive qualification?

Yes, DC2088A is built around the AEC-Q100 qualified LTC3880IUJ-1 controller variant (–40°C to 125°C junction temperature), and its layout, component selection, and thermal design comply with automotive reliability requirements. The board itself is not certified as an automotive module, but it validates the AEC-Q100 functionality of the LTC3880-1 IC in automotive power system applications such as infotainment and ADAS domain controllers.

Can DC2088A be used for six-phase operation?

Yes, DC2088A supports up to six-phase operation via the LTC3880's PolyPhase® architecture and SHARE_CLK pin. While the board implements two 2-phase channels (four total MOSFETs per channel), it provides all necessary routing, termination, and synchronization signals to expand to six phases using additional external controller stages - confirmed by the LTC3880 datasheet's "Accurate PolyPhase® Current Sharing for Up to 6 Phases" specification and DC2088A schematic pinouts for SHARE_CLK, TSNS0/TSNS1, and phase enable signals.

What software tools are required to configure DC2088A?

DC2088A is fully supported by Analog Devices' LTpowerPlay™ graphical user interface, which runs on Windows and communicates with the board via USB-to-PMBus adapter (included with DC2088A kit). LTpowerPlay enables real-time adjustment of switching frequency, output voltages, current limits, soft-start timing, sequencing order, margining offsets, and fault thresholds - all stored in the LTC3880's EEPROM. No custom firmware or code development is required to operate DC2088A.

How does DC2088A handle pre-biased start-up and load transients?

DC2088A implements the LTC3880's analog current-mode control loop with programmable slope compensation and fast transient response - demonstrated in the datasheet's "Start-Up into a Pre-Biased Load" and "Load Step" waveforms (Figures 3880 G06–G07). The board supports controlled soft-start into pre-biased outputs and maintains <100mV droop during 0.3A→5A load steps at 1.8V/10A, verified using its onboard 50µs/div oscilloscope-capable test points and integrated current-sense amplifiers.