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Analog Devices Inc./Maxim Integrated MAX20830AFE+
- Part No.:
- MAX20830AFE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-PowerVFQFN
- Datasheet:
-
MAX20830AFE+.pdf
- Description:
- IC REG BUCK ADJ 30A 16FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,828
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Product details
Overview
MAX20830AFE+ from Analog Devices is a fully integrated, PMBus-enabled 30A step-down DC-DC switching regulator with fixed-frequency current-mode control. It operates from 2.7V to 16V input, delivers 0.4V–5.8V output, supports 500kHz–2MHz configurable switching frequency, and features internal 1.8V LDOs (VCC/AVDD), differential remote sensing, and advanced modulation scheme (AMS) for fast load transients - deployed in high-density data center point-of-load power rails.
For engineers reviewing the MAX20830AFE+ datasheet, MAX20830AFE+ pinout, MAX20830AFE+ application, or MAX20830AFE+ equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative parts with functional differences, and supply-ready availability details - all grounded in Analog Devices' official documentation and EVKIT validation.
Technical Context
The MAX20830AFE+ implements fixed-frequency peak current-mode control with internal compensation and selectable AMS to extend closed-loop bandwidth without phase-margin penalty during large load steps. Its dual LDO architecture supplies VCC (1.8V, ≥175mA) from VDDH or optional LDOIN (2.5V–5.5V), and AVDD (1.8V) via resistor-coupled VCC, enabling bias optimization.
Protection includes hiccup-mode positive/negative overcurrent (POCP/NOCP), output overvoltage (OVP), BST UVLO, and overtemperature (OTP at +155°C), all with 20ms auto-restart except latched FPOCP (52A). Pin-strapped PGM0/PGM1 configure POCP level (23A–38A), switching frequency (500kHz–2MHz), PMBus address, and predefined voltage-loop gain scenarios (A–F).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 30A continuous at TA = +55°C, 200LFM airflow; derates to 28A at +85°C no airflow - defines max sustained PoL load without thermal throttling. |
| Input Voltage Range | 2.7V to 16V - supports wide-input industrial/comms rails including 3.3V, 5V, 12V, and 15V intermediate bus systems. |
| Output Voltage Range | 0.4V to 5.8V, adjustable via external resistor divider or PMBus VOUT_COMMAND (0.4V–0.8V reference range) - enables precise core voltage scaling for CPUs/FPGAs. |
| Switching Frequency | Configurable 500kHz to 2MHz via PGM1 strap or PMBus - higher frequencies reduce inductor size; lower frequencies improve light-load efficiency. |
| Peak Efficiency | 94.5% at VDDH = 12V, VOUT = 1.8V - confirms high conversion efficiency under typical server SoC rail conditions. |
| Junction Temp Range | −40°C to +125°C - validated operation across extended industrial and data center ambient environments. |
| PMBus Interface | Full SMBus v3.0 compliance with telemetry (READ_IOUT, READ_VOUT, READ_TEMPERATURE), fault logging, and adaptive voltage scaling - enables real-time system power management. |
Pinout & Package
MAX20830AFE+ uses a 4.3mm × 6.55mm, 16-pin FC2QFN package with exposed thermal pad (pin 16 = PGND), rated for −40°C to +125°C junction temperature. The package footprint is compatible with MAX20840T, MAX20815, and MAX20810.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 LX | Switching node | Direct connection to power inductor; carries high di/dt ripple current - requires low-inductance layout to minimize voltage spikes. |
| 2 BST | Bootstrap supply | Connects 0.47μF ceramic capacitor to LX; powers high-side gate driver - critical for MOSFET turn-on reliability. |
| 3 VCC | Internal 1.8V LDO output | Supplies gate drivers and digital core; requires ≥4.7μF decoupling to PGND - failure causes immediate shutdown. |
| 4 LDOIN | Optional bias input | Accepts 2.5V–5.5V external supply to boost VCC efficiency - bypasses VDDH LDO path, reducing heat at high input voltages. |
| 5 AVDD | Analog circuit supply | 1.8V analog rail derived via 2.2Ω–4.7Ω resistor from VCC; powers error amplifier and ADC - sensitive to noise coupling. |
| 6 AGND | Analog ground | Separate ground return for AVDD/SNSP/SNSN - must be star-connected to PGND at single point to avoid sensing errors. |
| 7 PGM0 | Configuration strap | Sets POCP threshold (23A–38A) and PMBus address (0x30h–0x37h) via resistor to AGND - determines current-limit safety margin. |
| 8 PGM1 | Configuration strap | Sets switching frequency (500kHz–2MHz) and predefined scenario (A–F) - selects voltage-loop zero and AMS enable state. |
| 9 DATA | PMBus data line | Open-drain SMBus interface; supports telemetry reads and configuration writes - requires 1.45V min high-level for reliable comms. |
| 10 CLK | PMBus clock line | Input clock up to 1MHz; timing parameters (tSU_DAT = 50ns, tHD_DAT = 0ns) define minimum host controller speed. |
| 11 SNSN | Remote sense negative | Low-impedance return for feedback loop - connects directly to load ground to cancel IR drop in PCB traces. |
| 12 SNSP | Remote sense positive | High-impedance input monitoring output voltage at load - enables <±0.6% feedback accuracy despite board losses. |
| 13 PGOOD | Power-good indicator | Open-drain output pulled low on OVP, POCP, OTP, or UVLO faults - used for system sequencing and fault isolation. |
| 14 EN | Enable input | Active-high logic (0.9V threshold); supports hardware sequencing and prebiased startup - falling edge stops switching within 2μs. |
| 15 VDDH | Main input supply | Primary power input (2.7V–16V); requires HF ceramic capacitors ≤40 mils away to meet ±19V absolute max rating. |
| 16 PGND | Power ground | High-current return for LX, VDDH, and VCC - must be solid copper plane tied to thermal pad for thermal and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated power stage | Monolithic 30A buck converter with internal high/low-side MOSFETs - eliminates external power devices and reduces BOM count by ≥8 components. |
| Differential remote sensing | Independent SNSP/SNSN inputs with ±0.6% feedback accuracy - compensates for up to 100mV IR drop between regulator and load, ensuring tight voltage regulation. |
| Advanced Modulation Scheme (AMS) | Enables leading/trailing-edge modulation during transients - reduces output voltage deviation by >40% vs. fixed-frequency PWM under 10A/μs load steps. |
| Configurable protection thresholds | Four selectable POCP levels (23A–38A) and programmable OVP/UVLO - allows tuning fault response to specific inductor and capacitor ratings. |
| Thermal-aware packaging | FC2QFN with 0.33°C/W θJC - enables direct heatsink attachment to exposed pad, supporting 30A operation at +85°C ambient with minimal airflow. |
Applications
| Data Center Point-of-Load | AI Accelerator Power Rails |
|---|---|
|
Use Scenario: Delivering 0.8V/25A to GPU memory subsystems in liquid-cooled AI servers with strict transient response requirements. IC Role / Device Role / Timing Role: Primary voltage regulator with AMS-enabled fast load-step response and PMBus telemetry for dynamic voltage/frequency scaling. Use Value: Achieves <50mV undershoot on 15A/μs load step while reporting real-time IOUT/VOUT to BMC for thermal-aware power capping. |
Use Scenario: Supplying 1.2V/30A to FPGA fabric in high-throughput network accelerators with multi-rail sequencing demands. IC Role / Device Role / Timing Role: High-current PoL regulator with differential remote sense and programmable soft-start slew rate (0.167–0.5V/ms) for controlled power-up. Use Value: Maintains ±0.5% output accuracy across 10cm PCB trace length and enables synchronized startup with other rails via PMBus OPERATION command. |
| 5G Baseband Unit Power | Enterprise Storage Controller |
|
Use Scenario: Generating 3.3V/20A for RF front-end ICs in outdoor macro base stations operating at −40°C to +85°C ambient. IC Role / Device Role / Timing Role: Wide-input buck regulator with −40°C to +125°C junction rating and robust OVP/OVLO protection against battery backup surges. Use Value: Survives 18.3V input overvoltage events and reports junction temperature to prevent thermal runaway in sealed enclosures. |
Use Scenario: Providing 1.8V/28A to NVMe SSD controllers in rack-scale storage systems requiring high reliability and telemetry. IC Role / Device Role / Timing Role: Fault-tolerant PoL regulator with hiccup-mode POCP/NOCP and latched FPOCP for short-circuit protection. Use Value: Detects inductor saturation (via 52A FPOCP) before catastrophic failure and logs fault history via PMBus for predictive maintenance. |
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 |
|---|---|---|---|
| MAX20840TTE+T | Same 4.3mm × 6.55mm FC2QFN package and pinout; supports 40A output (vs. 30A), higher 2.5MHz max fSW, and enhanced thermal resistance (θJC = 0.25°C/W). | Targeted at next-gen AI chips requiring >30A with tighter thermal constraints; lacks MAX20830AFE+'s LDOIN bias option. | Select MAX20840TTE+T when >30A output or sub-100ns minimum on-time is required; verify PCB layout compatibility with identical footprint. |
| TPS546D24RQFT | 40A, 2.2MHz, 3V–16V input; uses different pinout (17-pin QFN), no LDOIN pin, and TI-specific PMBus extensions (not full SMBus v3.0 compliant). | Designed for TI ecosystem integration (e.g., Fusion Digital Power GUI); offers higher current but requires new layout and firmware adaptation. | Choose TPS546D24RQFT only if leveraging TI's design tools and accepting non-drop-in replacement - no shared pinout or register map with MAX20830AFE+. |
Compared with MAX20840TTE+T and TPS546D24RQFT, the MAX20830AFE+ uniquely balances 30A capability, LDOIN bias flexibility, and full SMBus v3.0 compliance in a thermally optimized FC2QFN - making it optimal for space-constrained, multi-rail data center PoL designs requiring field-upgradable telemetry.
Availability
MAX20830AFE+ is available at Aetrix Electronics and suitable for data center power, AI accelerator rails, 5G baseband units, and enterprise storage controllers requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX20830AFE+ 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 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 MAX20830AFE+ belongs to Analog Devices' Power by Linear™ family of high-density, digitally enhanced DC-DC regulators - engineered specifically for demanding point-of-load applications in cloud infrastructure and AI hardware where efficiency, telemetry, and thermal resilience are critical.
FAQ
What is the maximum continuous output current of the MAX20830AFE+ under standard cooling conditions?
The MAX20830AFE+ delivers 30A continuously at TA = +55°C with 200LFM airflow, as validated in the datasheet's thermal rating table. At +85°C with no airflow, output current derates to 28A. These values assume proper PCB layout with thermal vias to the ground plane and use of recommended input/output capacitors per the MAX20830EVKIT# reference design. Exceeding these limits risks triggering overtemperature protection at TJ = +155°C.
Does the MAX20830AFE+ support remote voltage sensing, and how is it implemented?
Yes, the MAX20830AFE+ supports true differential remote sensing via dedicated SNSP and SNSN pins. SNSP connects to the load's positive output node, and SNSN connects to the load's ground reference - enabling cancellation of IR drop across PCB traces. This configuration achieves ±0.6% feedback accuracy at VREF = 0.5V, as specified in the Electrical Characteristics table, and is essential for maintaining tight regulation in high-current, long-trace applications like server motherboards.
How does the Advanced Modulation Scheme (AMS) improve transient response in the MAX20830AFE+?
The AMS in the MAX20830AFE+ dynamically modulates both leading and trailing edges of the switching waveform during fast load transients - unlike conventional fixed-frequency PWM. This increases effective switching frequency temporarily, accelerating inductor current slew rate and reducing reliance on output capacitance. As confirmed in the Detailed Description section, AMS extends closed-loop bandwidth without phase-margin penalty, cutting output voltage deviation by >40% under 10A/μs steps compared to standard operation.
Can the MAX20830AFE+ operate without an external bias supply on the LDOIN pin?
Yes, the MAX20830AFE+ operates fully functional with LDOIN left floating - in this mode, its internal 1.8V LDO (VCC) is powered from VDDH. However, connecting a 2.5V–5.5V external supply to LDOIN improves efficiency by bypassing the VDDH-to-VCC LDO path, especially at high input voltages (e.g., 12V). The datasheet confirms this bias option is "optional" and can be applied or removed anytime during regulation without affecting operation.
What protection features are built into the MAX20830AFE+, and how do they behave on fault detection?
The MAX20830AFE+ integrates six protections: VDDH UVLO/OVLO, OVP, POCP/NOCP, BST UVLO, and OTP. Most trigger hiccup-mode shutdown with 20ms auto-restart (e.g., POCP, OTP), while Fast POCP (52A) latches permanently until power cycle. All faults drive PGOOD low, enabling system-level fault isolation. For example, NOCP activates at −83% of the selected POCP threshold to prevent reverse inductor current, and its counter-based hiccup behavior ensures graceful recovery from brief negative current events.
MAX20830AFE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-PowerVFQFN
- Packaging:
- Tray
- 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)
MAX20830AFE+ FAQ
1.How can I place an order for MAX20830AFE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20830AFE+ 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 MAX20830AFE+ reliable?
The price and inventory of MAX20830AFE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20830AFE+ is usually 5 days.
3.What payment methods are accepted for MAX20830AFE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20830AFE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20830AFE+?
MAX20830AFE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20830AFE+ 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 MAX20830AFE+?
For technical support, including MAX20830AFE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20830AFE+ requirements.
6.How does Aetrix verify that MAX20830AFE+ is sourced from the original manufacturer or authorized distributors?
All MAX20830AFE+ 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 MAX20830AFE+ meets industry standards.
7.What is the process for return or replacement of MAX20830AFE+?
All MAX20830AFE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20830AFE+, 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 MAX20830AFE+ part is unused and in its original packaging.
Return procedure for MAX20830AFE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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