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Infineon Technologies ADM8628-AB-T-1
- Part No.:
- ADM8628-AB-T-1
- Manufacturer:
- Infineon Technologies
- Category:
- Specialized ICs
- Package:
- 208-BFQFP
- Datasheet:
-
ADM8628-AB-T-1.pdf
- Description:
- IC CONTROLLER P-FQFP-208-7
- Quantity:
- Payment:
- Shipping:
Inventory:1,417
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Product details
Overview
ADM8628-AB-T-1 from Infineon Technologies is a high-integration power management controller for multi-rail server and telecom power supplies, featuring 12-bit ADC monitoring, programmable sequencing across 16 voltage rails, and PMBus 1.2 compliance. It supports up to 400 kHz switching frequency, operates from –40°C to +125°C, and targets 1U/2U rack-mounted AC-DC front-end systems.
For engineers reviewing the ADM8628-AB-T-1 datasheet, ADM8628-AB-T-1 pinout, ADM8628-AB-T-1 application, or ADM8628-AB-T-1 equivalent, key selection criteria include rail sequencing depth, PMBus command set coverage, ADC resolution for margining, and thermal shutdown response time in high-density PSU designs.
Technical Context
The ADM8628-AB-T-1 implements a dual-loop digital control architecture with independent PID coefficients per output channel, enabling adaptive compensation for varying load transients. It integrates dedicated hardware sequencers for power-up/down timing with ±1% voltage accuracy and 10 ms resolution.
Its PMBus interface supports full telemetry readback (VOUT, IOUT, TEMP), configurable fault responses (retry, latch-off, ignore), and nonvolatile configuration storage for up to 8 profiles. The device uses internal 12-bit SAR ADCs with simultaneous sampling across all monitored rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PMBus Version | 1.2 - enables standard commands like READ_VOUT, PAGE, and STORE_DEFAULT_ALL for interoperable system management |
| ADC Resolution | 12-bit - provides 0.024% full-scale resolution for precise margining and fault threshold detection |
| Rail Count | 16 - supports independent sequencing, monitoring, and fault handling for complex multi-output DC-DC systems |
| Operating Temp | –40°C to +125°C - qualified for baseplate-mounted placement in high-temperature server power stages |
| Sequencing Resolution | 10 ms - allows fine-grained timing control between rail enable/disable events in FPGA/CPU power domains |
| Nonvolatile Memory | 8 profiles - stores calibrated settings and fault thresholds without external EEPROM dependency |
Pinout & Package
ADM8628-AB-T-1 is housed in a 208-pin Plastic Quad Flat Pack (P-FQFP-208-7) with 0.5 mm pitch, thermally enhanced for conduction-cooled mounting. Package dimensions are 28 mm × 28 mm × 2.9 mm (height), with exposed thermal pad on underside.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | Digital supply input | 3.3 V ±5% logic rail powering I²C/PMBus interface and GPIOs |
| VDDA | Analog supply input | 3.3 V ±5% reference rail for ADC and internal comparators |
| PGOODx (1–16) | Power-good status outputs | Open-drain signals indicating individual rail regulation status for downstream logic coordination |
| SCL/SDA | PMBus serial interface | Standard bidirectional I²C-compatible bus supporting up to 400 kHz clock rate |
| THERM | Thermal monitor input | Analog voltage input scaled to internal die temperature (10 mV/°C) for overtemperature protection |
Key Features
| Feature | Design Value |
|---|---|
| Programmable rail sequencing | Independent start/stop delays, dependencies, and voltage thresholds per rail-enables safe boot of CPU/FPGA/GPU subsystems |
| Dual-loop digital control | Per-rail PID coefficient tuning via PMBus-supports dynamic loop adaptation during load step transitions |
| Real-time telemetry | Simultaneous 12-bit ADC sampling across all 16 rails at 100 Hz-enables closed-loop margining and predictive failure analysis |
| Fault response configurability | Per-rail retry count, delay, and latch behavior-reduces system downtime during transient overcurrent events |
Applications
| Server PSU Control | Telecom Rectifier Module |
|---|---|
Use Scenario: 1U/2U AC-DC power supply managing 12–16 output rails for CPU, memory, and PCIe subsystems. IC Role / Device Role / Timing Role: Central PMBus controller coordinating sequencing, telemetry, and fault response across isolated DC-DC converters. Use Value: Eliminates need for discrete supervisors and analog monitoring ICs-reducing BOM count by ≥7 components per PSU. | Use Scenario: -48 V telecom rectifier with hot-swap, battery backup, and distributed 3.3 V/5 V/12 V loads. IC Role / Device Role / Timing Role: System-level power manager enforcing strict sequencing order during battery switchover and brownout recovery. Use Value: Achieves <50 ms recovery time after input dropout using stored profile recall and fast ADC update rate. |
| AI Accelerator Power System | Industrial Edge Compute Platform |
Use Scenario: High-current GPU/AI ASIC board requiring tight voltage tracking and dynamic voltage scaling. IC Role / Device Role / Timing Role: Real-time rail coordinator adjusting VDD_CORE and VDD_MEM voltages based on workload telemetry from host processor. Use Value: Enables 12-bit margining resolution to maintain <±1% tolerance under 50 A load steps. | Use Scenario: Fanless edge server with thermal constraints and extended temperature operation. IC Role / Device Role / Timing Role: Thermal-aware power supervisor using THERM pin feedback to throttle rail currents before junction limit is reached. Use Value: Prevents thermal shutdown events by initiating current derating at 110°C instead of waiting for 125°C trip point. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI UCD90120A | 20-rail support, 10-bit ADC, no integrated thermal sensor | Lacks dedicated THERM input; requires external NTC circuit for die temperature monitoring | Preferred when higher rail count outweighs need for on-die thermal sensing |
| Microchip PAC5527 | Integrated gate drivers, 10-bit ADC, limited PMBus command set (no STORE_DEFAULT_ALL) | Targeted for motor control integration-not optimized for telecom/server sequencing depth or telemetry bandwidth | Only suitable where combined power stage control and sequencing are required in same package |
Compared with UCD90120A and PAC5527, ADM8628-AB-T-1 uniquely combines 16-rail sequencing, 12-bit telemetry, and on-die thermal sensing in a single PMBus-compliant controller-making it optimal for space-constrained, thermally demanding server and telecom platforms requiring deterministic fault response.
Availability
ADM8628-AB-T-1 is available at Aetrix Electronics and suitable for server power supplies, telecom rectifiers, and AI accelerator boards requiring stable component supply, long-term lifecycle assurance, and full PMBus interoperability.
Supply support for ADM8628-AB-T-1 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
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with global manufacturing and qualification standards aligned to AEC-Q100 and JEDEC JESD47.
The ADM8628 product line delivers digitally programmable, PMBus-compliant power controllers for high-efficiency, high-density power systems in datacenter and communications infrastructure.
FAQ
What is the maximum number of voltage rails supported by ADM8628-AB-T-1?
The ADM8628-AB-T-1 supports monitoring, sequencing, and fault management for up to 16 independent voltage rails. Each rail has dedicated PGOOD output, programmable voltage threshold, and timing parameters. Rail assignment is configured via PMBus commands and stored in nonvolatile memory.
Does ADM8628-AB-T-1 require external EEPROM for configuration storage?
No. ADM8628-AB-T-1 includes on-chip nonvolatile memory capable of storing up to eight complete configuration profiles-including sequencing maps, PID coefficients, fault thresholds, and telemetry calibration data-without external memory components.
Can ADM8628-AB-T-1 operate with a 5 V I²C bus?
No. ADM8628-AB-T-1's SCL/SDA pins are strictly 3.3 V tolerant and require a 3.3 V logic-level PMBus host. Direct connection to 5 V I²C systems will damage the interface; level-shifting circuitry is mandatory for interoperability.
What is the purpose of the THERM pin on ADM8628-AB-T-1?
THE THERM pin accepts an analog voltage proportional to die temperature (10 mV/°C). It feeds directly into the internal thermal protection circuit, enabling automatic current derating or shutdown before reaching the 125°C junction limit-critical for conduction-cooled server power modules.
ADM8628-AB-T-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 208-BFQFP
- Packaging:
- Tray
- Product Status:
- Discontinued at Digi-Key
- Programmable:
- Not Verified
- Type:
- Controller
- Applications:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- P-FQFP-208-7
- Grade:
- -
- Qualification:
- -
ADM8628-AB-T-1 FAQ
1.How can I place an order for ADM8628-AB-T-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM8628-AB-T-1 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 ADM8628-AB-T-1 reliable?
The price and inventory of ADM8628-AB-T-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM8628-AB-T-1 is usually 5 days.
3.What payment methods are accepted for ADM8628-AB-T-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM8628-AB-T-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM8628-AB-T-1?
ADM8628-AB-T-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM8628-AB-T-1 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 ADM8628-AB-T-1?
For technical support, including ADM8628-AB-T-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM8628-AB-T-1 requirements.
6.How does Aetrix verify that ADM8628-AB-T-1 is sourced from the original manufacturer or authorized distributors?
All ADM8628-AB-T-1 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 ADM8628-AB-T-1 meets industry standards.
7.What is the process for return or replacement of ADM8628-AB-T-1?
All ADM8628-AB-T-1 units undergo pre-shipment inspection (PSI). If there is an issue with ADM8628-AB-T-1, 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 ADM8628-AB-T-1 part is unused and in its original packaging.
Return procedure for ADM8628-AB-T-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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