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Analog Devices Inc./Maxim Integrated MAX20830TAFE+
- Part No.:
- MAX20830TAFE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-PowerWFQFN
- Datasheet:
-
MAX20830TAFE+.pdf
- Description:
- IC REG BUCK ADJ 30A 16FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,672
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Product details
Overview
MAX20830TAFE+ from Analog Devices is a fully integrated 30A, 2MHz synchronous step-down DC-DC regulator with PMBus interface, fixed-frequency current-mode control, and internal compensation. It operates from 2.7V–16V input, delivers 0.4V–5.8V output, and features differential remote sensing, AMS for fast load transients, and integrated 1.8V LDO for gate drive (VCC) and analog circuitry (AVDD). It targets high-density point-of-load power in data center and networking equipment.
For engineers reviewing the MAX20830TAFE+ datasheet, MAX20830TAFE+ pinout, MAX20830TAFE+ application, or MAX20830TAFE+ equivalent, key selection considerations include its 30A thermal rating at +55°C/200LFM, programmable POCP thresholds (23A–38A), 500kHz–2MHz switching frequency configuration via PGM1, PMBus telemetry of IOUT/VOUT/VIN/temperature, and FC2QFN-16 package with exposed PGND pad for thermal performance.
Technical Context
The MAX20830TAFE+ implements fixed-frequency peak current-mode control with internal voltage-loop compensation and selectable Advanced Modulation Scheme (AMS) to extend closed-loop bandwidth during large load transients without phase-margin penalty. Its control architecture includes cycle-by-cycle peak current limiting, valley-current-based DCM detection, and dual overcurrent protection (POCP and FPOCP) with hiccup and latch modes.
It integrates a 1.8V LDO powered from VDDH (or optionally from 2.5V–5.5V LDOIN), supplies VCC for MOSFET drivers and AVDD for analog circuitry via an external resistor divider, and supports hardware EN control or PMBus OPERATION command override. Fault handling includes VDDH UVLO/OVLO, output OVP, BST UVLO, NOCP, and OTP with 20ms hiccup restart or latched shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 30A continuous at TA = +55°C, 200LFM airflow; derates to 28A at TA = +85°C, no airflow |
| Input Voltage Range | 2.7V to 16V - supports wide-range industrial and server rails including 3.3V, 5V, 12V, and 15V inputs |
| Output Voltage Range | 0.4V to 5.8V - adjustable via external feedback divider; reference voltage programmable from 0.4V to 0.8V via PMBus |
| Switching Frequency | 500kHz to 2MHz - configured by PGM1 pin-strap resistor; higher frequencies enable smaller magnetics and faster transient response |
| Efficiency | 94.5% peak at VDDH = 12V, VOUT = 1.8V - achieved with integrated high- and low-side MOSFETs and optimized gate drive |
| Thermal Resistance | θJA = 44.3°C/W (closed-top FC2QFN) - enables high-power operation with minimal heatsinking in compact layouts |
| PMBus Telemetry | Real-time READ_IOUT (0–38A), READ_VOUT (±200mV range), READ_VIN (2.3–16V), READ_TEMPERATURE (−40°C to +150°C) - enables system-level power monitoring and fault logging |
Pinout & Package
MAX20830TAFE+ uses a 4.3mm × 6.55mm, 16-pin FC2QFN package with exposed PGND thermal pad, rated for −40°C to +125°C junction temperature. The closed-top variant (T suffix) provides enhanced mechanical robustness and improved θJC vs. open-top MAX20830.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LX | Switching node | Direct connection to output inductor; carries high di/dt; requires low-inductance layout to minimize ringing and EMI |
| BST | Bootstrap supply | Connects via 0.47μF ceramic capacitor to LX; powers high-side MOSFET gate driver; monitored for UVLO (1.48–1.64V) |
| VCC | Internal 1.8V LDO output | Supplies gate drivers; requires ≥4.7μF ceramic decoupling to PGND; sourced from VDDH or optional LDOIN |
| LDOIN | Optional bias input | Accepts 2.5V–5.5V external supply to improve efficiency; floating if unused; enables VCC generation from lower-loss path |
| AVDD | Analog core supply | 1.8V analog rail derived from VCC via 2.2Ω–4.7Ω resistor; requires ≥1μF decoupling to AGND for stable sensing and control |
| SNSP/SNSN | Differential remote sense | Measures output voltage at load; rejects PCB IR drop; SNSP connects to load VOUT, SNSN to load GND; enables <±1% regulation accuracy |
| PGM0/PGM1 | Configuration strapping | Set POCP level (23A/28A/33A/38A), PMBus address, switching frequency (500kHz–2MHz), and predefined scenario (A–F) at startup |
| CLK/DATA | PMBus interface | SMBus-compatible 1000kHz serial bus; supports full telemetry, configuration, and fault reporting; open-drain with 0.4V logic low |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30A power stage | Eliminates external MOSFETs and drivers; reduces BOM count and layout area while ensuring matched timing and thermal coupling |
| Advanced Modulation Scheme (AMS) | Enables leading- and trailing-edge modulation during transients; reduces output capacitance requirement by up to 40% vs. fixed-frequency PWM |
| Programmable POCP thresholds | Four selectable peak current limits (23A–38A) via PGM0 resistor; allows precise matching to inductor saturation and system fault margins |
| Differential remote sensing | Compensates for PCB trace resistance up to ±100mV; maintains tight output regulation (<±0.6% typical) at the load point under dynamic load |
| PMBus telemetry and control | Real-time readback of output current, voltage, input voltage, and die temperature; supports adaptive voltage scaling and system-level power management |
| Robust fault protection suite | Includes hiccup-mode POCP/NOCP/OTP/VDDH UVLO, latch-off FPOCP, OVP, and BST UVLO - ensures safe operation across line, load, and thermal faults |
Applications
| Server VR13/VR14 Core Power | Data Center ASIC Supply |
|---|---|
Use Scenario: Delivering tightly regulated 0.8V/30A core voltage to high-performance CPUs/GPUs in 1U/2U rack servers with strict ripple and transient requirements. IC Role / Device Role / Timing Role: Primary point-of-load regulator implementing VR13/VR14 compliance; performs adaptive voltage scaling (AVS) via PMBus VOUT_COMMAND and monitors load current for dynamic power capping. Use Value: Achieves <1% output voltage deviation under 20A/μs load steps using AMS and differential sensing; eliminates need for external current-sense amplifiers or discrete PMBus ADCs. |
Use Scenario: Powering AI accelerators and network processors in disaggregated data center racks where thermal density and telemetry are critical. IC Role / Device Role / Timing Role: High-current POL converter with real-time telemetry; reports die temperature and output current to BMC for predictive thermal throttling and power budgeting. Use Value: Enables per-rail power analytics via READ_TEMPERATURE (±4°C accuracy) and READ_IOUT (±3A accuracy), supporting firmware-defined power management policies. |
| 5G Baseband Unit (BBU) Power | Enterprise Switch ASIC Supply |
Use Scenario: Providing 1.2V/25A supply to FPGA-based baseband processing units operating in thermally constrained outdoor enclosures. IC Role / Device Role / Timing Role: Compact, thermally efficient buck regulator with extended temperature support (−40°C to +125°C TJ); uses LDOIN bias to maximize efficiency at partial load. Use Value: Delivers >92% efficiency at 12V input/1.2V output/10A load with optional LDOIN; θJA = 44.3°C/W allows conduction-cooled design without forced airflow. |
Use Scenario: Generating 0.95V/30A for multi-core switch ASICs in 1RU enterprise switches with dense PCB layouts and limited board space. IC Role / Device Role / Timing Role: High-density POL regulator with FC2QFN-16 footprint compatible with MAX20840T/MAX20815; supports pin-strapped frequency selection to avoid noise coupling with SerDes lanes. Use Value: 4.3mm × 6.55mm footprint saves >35% board area vs. discrete solutions; pin-compatible upgrade path simplifies design reuse across product generations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current PMBus-enabled buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20840T | Same 4.3mm × 6.55mm FC2QFN package and pinout; supports 40A output (vs. 30A); higher RDS(on) FETs yield ~1% lower peak efficiency at 12V→1.8V | Targeted at next-generation ASICs requiring >30A; requires larger input/output capacitors and thermal margin due to higher power dissipation | Select MAX20840T when system load exceeds 30A continuous or when future-proofing for higher current headroom is required. |
| TPS546D24A | 40-pin QFN, 35A rating, 400kHz–2MHz frequency, TI's proprietary PMBus subset; lacks AMS and differential remote sense; uses external compensation | Designed for TI ecosystem integration; requires external loop compensation components and separate current-sense solution for telemetry | Choose TPS546D24A when leveraging TI's Fusion Digital Power Designer toolchain or when needing higher current with simpler thermal management than FC2QFN demands. |
Compared with MAX20840T and TPS546D24A, the MAX20830TAFE+ offers superior power density and integrated telemetry in a smaller 16-pin package, but trades off maximum current capability and ecosystem tooling support for streamlined design-in and robust transient performance via AMS.
Availability
MAX20830TAFE+ is available at Aetrix Electronics and suitable for data center power, communications equipment, networking infrastructure, and high-performance computing applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX20830TAFE+ 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 industrial, automotive, communications, and data center markets with precision power, signal chain, and RF solutions.
The MAX20830TAFE+ belongs to Analog Devices' Power by Linear™ family of highly integrated PMBus-enabled DC-DC regulators, designed specifically for high-efficiency, high-density point-of-load power delivery in thermally and space-constrained infrastructure equipment.
FAQ
What is the maximum continuous output current rating for the MAX20830TAFE+ under standard conditions?
The MAX20830TAFE+ delivers 30A continuous output current at TA = +55°C with 200LFM airflow. At TA = +85°C with no airflow, the rating derates to 28A. These values assume proper PCB layout with thermal vias to internal ground planes and use of recommended input/output capacitors and inductor per the MAX20830EVKIT# design. Junction temperature must remain ≤+125°C for reliable operation.
How does the Advanced Modulation Scheme (AMS) in the MAX20830TAFE+ improve transient response compared to standard PWM?
The MAX20830TAFE+ AMS enables both leading- and trailing-edge modulation during large load steps, temporarily increasing or decreasing switching frequency to accelerate inductor current slew rate. This reduces reliance on output capacitance for transient energy, cuts peak voltage deviation by up to 50%, and extends closed-loop bandwidth without sacrificing phase margin-enabling smaller, lower-ESR ceramic capacitors in space-constrained designs.
Can the MAX20830TAFE+ operate without an external LDOIN supply, and what impact does LDOIN have on efficiency?
Yes, the MAX20830TAFE+ operates fully with LDOIN floating - its internal 1.8V LDO for VCC and AVDD is then powered from VDDH. When a 2.5V–5.5V external bias is applied to LDOIN, efficiency improves by 0.5–1.2% across light-to-moderate loads because the LDO conversion loss shifts from the higher-input VDDH rail to a lower-voltage, lower-loss path. No sequencing or supervision is required for LDOIN application or removal.
What are the supported PMBus commands for reading real-time telemetry from the MAX20830TAFE+?
The MAX20830TAFE+ supports READ_IOUT (output current, 0–38A range), READ_VOUT (output voltage, ±200mV around VREF), READ_VIN (input voltage, 2.3–16V), and READ_TEMPERATURE (junction temperature, −40°C to +150°C) via standard PMBus commands. All readings update every 1.64ms (voltage/current) or 3.13ms (temperature), with specified accuracies of ±3A, ±1.55%, ±350mV, and ±4°C respectively.
How is the overcurrent protection threshold configured on the MAX20830TAFE+, and what are the available options?
The MAX20830TAFE+ POCP threshold is set by a resistor on the PGM0 pin, selecting one of four factory-trimmed levels: 23A, 28A, 33A, or 38A. Each level corresponds to a specific resistor value (e.g., 42.2kΩ = 23A, 3.74kΩ = 28A) per Table 1 in the datasheet. The selected threshold applies to cycle-by-cycle peak current limiting and determines the NOCP threshold (−83% of POCP). FPOCP is fixed at 52A and non-configurable.
MAX20830TAFE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-PowerWFQFN
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 0.4V
- Voltage - Output (Max):
- 5.8V
- Current - Output:
- 30A
- Frequency - Switching:
- 500kHz ~ 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-FC2QFN (4.3x6.55)
MAX20830TAFE+ FAQ
1.How can I place an order for MAX20830TAFE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20830TAFE+ 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 MAX20830TAFE+ reliable?
The price and inventory of MAX20830TAFE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20830TAFE+ is usually 5 days.
3.What payment methods are accepted for MAX20830TAFE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20830TAFE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20830TAFE+?
MAX20830TAFE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20830TAFE+ 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 MAX20830TAFE+?
For technical support, including MAX20830TAFE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20830TAFE+ requirements.
6.How does Aetrix verify that MAX20830TAFE+ is sourced from the original manufacturer or authorized distributors?
All MAX20830TAFE+ 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 MAX20830TAFE+ meets industry standards.
7.What is the process for return or replacement of MAX20830TAFE+?
All MAX20830TAFE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20830TAFE+, 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 MAX20830TAFE+ part is unused and in its original packaging.
Return procedure for MAX20830TAFE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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