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Analog Devices Inc. DC2291A
- Part No.:
- DC2291A
- Manufacturer:
- Analog Devices Inc.
- Package:
- Datasheet:
-
DC2291A.pdf
- Description:
- EVAL BOARD FOR LTC3882
- Quantity:
- Payment:
- Shipping:
Inventory:3,063
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Product details
Overview
DC2291A from Analog Devices (formerly Linear Technology) is a high-current, four-phase PolyPhase® synchronous buck demonstration board built around two LTC3882EUJ dual-output digital power system management controllers and four FDMF5820DC DrMOS modules. It delivers up to 140A at 1.0V output from a 7–14V input, operates at 450kHz switching frequency, and supports PMBus-based real-time telemetry and configuration via LTpowerPlay GUI.
For engineers reviewing the DC2291A datasheet, DC2291A pinout, DC2291A application, or DC2291A equivalent, this board enables rapid evaluation of high-density, digitally managed point-of-load (POL) conversion for server, AI accelerator, and telecom infrastructure power rails requiring precise voltage margining, sequencing, fault logging, and thermal monitoring under full-load conditions.
Technical Context
The DC2291A implements a dual-LTC3882 architecture - each IC controls two phases in parallel - enabling four-phase interleaved operation with inherent ripple cancellation and current sharing. The board uses external 5V supplies for VDR (DrMOS gate drive) and VCC (controller bias), configurable via jumpers JP5 and JP7.
It integrates nonvolatile memory (Microchip 24LC025 EEPROM) for storing configuration and telemetry history, supports SMBus/PMBus communication via DC1613A dongle, and provides analog monitoring of voltage, current, and temperature across both outputs with dedicated sense resistors and thermistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 7V to 14V - supports standard 12V intermediate bus architectures with ±16.7% tolerance. |
| Output Voltage Range | 0.5V to 2.0V - digitally adjustable via PMBus commands; default set to 1.0V for CPU/GPU core rails. |
| Max Output Current | 140A continuous - requires forced airflow (400LFM) and thermal management per Figure 6. |
| Switching Frequency | 450kHz factory default - balances efficiency, component size, and EMI performance for high-density POL designs. |
| Peak Efficiency | 88.6% at 1.0V/140A - achieved using low-ESR POSCAP output capacitors and optimized DrMOS integration. |
| Digital Interface | PMBus v1.3 compliant - enables full read/write access to configuration registers, telemetry, and fault logs. |
| Thermal Management | Integrated temperature sensing on controller and DrMOS - triggers thermal shutdown and alerts via ALERTB pin. |
Availability
DC2291A is available at Aetrix Electronics and suitable for high-performance computing, AI accelerator power delivery, and telecom base station development requiring stable component supply, pre-validated reference design, and full digital power system management capability.
Supply support for DC2291A 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 acquired Linear Technology in 2017 and continues its legacy of high-performance analog and power management ICs, with leadership in precision signal conditioning, power conversion, and digital power system management.
The DC2291A belongs to Linear's Digital Power Demonstration platform, designed specifically to accelerate adoption of PMBus-enabled, multi-rail power systems for datacenter, networking, and FPGA-based applications demanding real-time configurability and telemetry.
FAQ
What is the primary function of the DC2291A?
The DC2291A is a fully assembled, tested demonstration board that showcases the LTC3882EUJ dual-output digital power controller in a four-phase, 140A PolyPhase® synchronous buck configuration. It serves as an evaluation and reference platform-not a production component-for validating high-current, digitally managed point-of-load power delivery in real-world systems.
Does the DC2291A require external software to operate?
No - the DC2291A powers up with default settings (1.0V output, 450kHz switching) and delivers regulated power without any host connection. However, to access digital power system management features (voltage margining, sequencing, telemetry, fault logging), the LTpowerPlay GUI and DC1613A USB-to-PMBus dongle are required.
Can the DC2291A be used in multi-board arrays?
Yes - the DC2291A includes J12 and J13 headers for stacking with other LTC digital power demo boards (e.g., DC2290A, DC2292A) to create synchronized, multi-rail power systems. This enables coordinated sequencing, shared clocking (SHARE_CLK), and unified PMBus addressing in complex power architectures.
What thermal requirements apply when operating the DC2291A at full load?
At 140A output, the DC2291A requires 400LFM forced airflow and ambient temperature ≤25°C (TA = 25°C) to maintain safe junction temperatures, as verified in Figure 6's thermal image. Without airflow, sustained 140A operation risks thermal shutdown or reduced reliability.
How is output voltage configured on the DC2291A?
Output voltage is configured either by hardware (resistor dividers on VOUT0_CFG/VOUT1_CFG pins) or digitally via PMBus command (VOUT_COMMAND register). Default is 1.0V; range is 0.5V–2.0V. Changes made in LTpowerPlay can be written to RAM or stored permanently in onboard EEPROM.
DC2291A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Box
- Product Status:
- Active
- Main Purpose:
- DC/DC, Step Down
- Outputs and Type:
- 1 Non-Isolated Output
- Voltage - Output:
- -
- Current - Output:
- 1V
- Voltage - Input:
- 140A
- Regulator Topology:
- 7V ~ 14V
- Frequency - Switching:
- Buck
- Contents:
- 450kHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- LTC3882
DC2291A FAQ
1.How can I place an order for DC2291A through Aetrix?
Please submit a Request for Quotation (RFQ) for DC2291A on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DC2291A reliable?
The price and inventory of DC2291A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DC2291A is usually 5 days.
3.What payment methods are accepted for DC2291A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DC2291A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DC2291A?
DC2291A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DC2291A order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DC2291A?
For technical support, including DC2291A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DC2291A requirements.
6.How does Aetrix verify that DC2291A is sourced from the original manufacturer or authorized distributors?
All DC2291A products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DC2291A meets industry standards.
7.What is the process for return or replacement of DC2291A?
All DC2291A units undergo pre-shipment inspection (PSI). If there is an issue with DC2291A, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DC2291A part is unused and in its original packaging.
Return procedure for DC2291A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DC2291A Tags
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