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Analog Devices Inc./Maxim Integrated MAX20754ETMA2+T
- Part No.:
- MAX20754ETMA2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Power Supply Controllers, Monitors
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
MAX20754ETMA2+T.pdf
- Description:
- 6CH CONFIGURABLE MASTER W/ PMBUS
- Quantity:
- Payment:
- Shipping:
Inventory:4,129
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Product details
Overview
The MAX20754ETMA2+T from Maxim Integrated is a PMBus-compatible, dual-output, configurable multiphase power-supply controller optimized for communication, networking, and server applications. It generates up to six PWM phases, supports 0.25V–2.0V output voltage per rail, operates from 4.5V–16V input, and integrates a 700mA buck regulator for self- and power-stage biasing.
For engineers reviewing the MAX20754ETMA2+T datasheet, MAX20754ETMA2+T pinout, MAX20754ETMA2+T application, or MAX20754ETMA2+T equivalent, this controller delivers precise load-current reporting, thermal monitoring of external power stages, programmable switching frequency (300–800kHz), AMS-enabled transient response enhancement, and nonvolatile PMBus parameter storage - all in a 48-pin 7mm × 7mm TQFN package.
Technical Context
The MAX20754ETMA2+T implements a hybrid peak/average current-mode control architecture with discontinuous conduction mode (DCM) during startup. Its dual independent voltage loops (A1/A2/A2B/A3 per rail) support flexible phase assignment across two outputs, with orthogonal current rebalancing ensuring thermal uniformity across up to six phases.
It features an integrated 1.875V buck converter (LX/PGND/VDD3P3) delivering 700mA, enabling single-rail 3.3V system supply operation. The advanced modulation scheme (AMS) dynamically adjusts PWM timing post-transient, reducing output capacitance requirements by improving transient response beyond conventional fixed-frequency PWM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Range | 0.25V to 2.0V per rail - enables direct regulation of low-voltage ASIC/FPGA cores and DDR memory rails. |
| Input Voltage Range | 4.5V to 16V - compatible with standard 5V, 12V, and intermediate bus architectures. |
| Switching Frequency | 300kHz to 800kHz - programmable in discrete steps; higher frequencies reduce passive size, lower frequencies improve efficiency at light load. |
| PWM Outputs | Six independent PWM signals (PWM0–PWM5) - supports scalable 1–6 phase per rail configurations for current demands up to 189A. |
| Integrated Buck Regulator | 1.875V output, 700mA capability - powers controller core and external power stages from VDD3P3, eliminating need for auxiliary bias supplies. |
| PMBus Compliance | Revision 1.3, 10kHz–1MHz bus speed - enables full telemetry (voltage, current, temperature), configuration, and fault logging via industry-standard interface. |
| Remote Sensing | Differential SNSP/SNSN inputs per rail - provides accurate load-point regulation despite PCB IR drop, critical for sub-1V high-current rails. |
Pinout & Package
Package: 48-pin TQFN (7mm × 7mm), exposed pad (EP) as sole analog ground reference. Thermal resistance θJA = 25°C/W (4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS0–CS5 | Current-sense inputs | Accept lossless current feedback from up to six Maxim power stages; enable per-phase current monitoring and OCR balancing. |
| SNSP1/SNSN1, SNSP2/SNSN2 | Differential remote sense inputs | Measure true load voltage at point-of-load; reject PCB noise and IR drop for ±1.1% regulation accuracy down to 0.25V. |
| PWM0–PWM5 | PWM phase outputs | Drive external power-stage gate inputs; timing controlled by AMS or fixed-frequency mode per configuration. |
| EN1/EN2 | Enable inputs | Active-high logic enables each output rail independently; supports sequencing and fault isolation. |
| PGOOD1/PGOOD2 | Power-good status outputs | Open-drain indicators confirm regulated output voltage within ±102mV of target; configurable hysteresis. |
| TS1/TS2 | Power-stage thermal/fault inputs | Monitor combined temperature and fault status from dual power-train devices; trigger shutdown on overtemperature. |
| VDD3P3, LX, PGND | Integrated buck regulator terminals | VDD3P3 supplies 3.3V logic; LX connects to 1µH inductor; PGND is dedicated regulator ground - decouples analog/digital noise paths. |
| SDA/SCL/ALERT | PMBus interface | Standard SMBus 2.0 open-drain interface; ALERT asserts on fault events for system-level interrupt handling. |
Key Features
| Feature | Design Value |
|---|---|
| Advanced Modulation Scheme (AMS) | Dynamic PWM edge adjustment improves load-step response by >50% vs. fixed-frequency PWM, reducing required output capacitance by up to 30%. |
| Orthogonal Current Rebalancing (OCR) | Actively equalizes per-phase current across all assigned phases, minimizing thermal hotspots and extending power-stage lifetime. |
| Integrated 700mA Buck Regulator | Eliminates external bias supply; powers controller core and up to six power stages from single 3.3V input, simplifying BOM and layout. |
| Lossless Current Sensing Interface | Accepts current-mode feedback (not voltage) from Maxim power stages, providing ±1.5% current measurement accuracy independent of temperature or component tolerance. |
| Resistor-Strapped Initial Configuration | Five external resistors set default VOUT, switching frequency, PMBus address, and current limit - enables bring-up without firmware or PMBus host. |
Applications
| ASIC/FPGA Core Supply | DDR Memory Rail |
|---|---|
Use Scenario: Powering high-performance FPGA or ASIC cores requiring tightly regulated 0.8V–1.2V at up to 150A with fast load transients. IC Role / Device Role / Timing Role: Dual-output multiphase controller managing six PWM phases across two rails; AMS reduces voltage droop during 10A/µs transients. Use Value: Achieves <±6mV regulation error at 1V/150A with coupled inductors, enabling reliable operation at maximum silicon performance. | Use Scenario: Delivering stable 1.2V or 1.35V to DDR4/DDR5 memory subsystems with strict ripple (<30mV) and sequencing requirements. IC Role / Device Role / Timing Role: Configurable dual-rail controller assigning 2–4 phases to DDR VDDQ and 2–4 phases to VDD/VDD2; PGOOD sequencing ensures safe initialization. Use Value: Differential remote sensing maintains ±0.5% voltage accuracy at memory connector, preventing data corruption under dynamic access patterns. |
| Server CPU VR13-Compatible Supply | Networking ASIC Bias Rail |
Use Scenario: Implementing VR13-compliant voltage regulator for dual-socket server CPUs with adaptive voltage positioning (AVP) and telemetry. IC Role / Device Role / Timing Role: PMBus-controlled controller executing AVP via real-time IOUT-based VOUT_COMMAND adjustment; reads current, temperature, and voltage for platform management. Use Value: Nonvolatile storage of PMBus parameters enables consistent boot behavior across reboots; AMS + OCR ensures AVP compliance under rapid load changes. | Use Scenario: Generating isolated 0.95V and 1.8V bias rails for multi-core networking ASICs in 1RU switches with strict thermal constraints. IC Role / Device Role / Timing Role: Dual-output controller driving separate power trains; TS1/TS2 inputs monitor thermal headroom of adjacent ASIC die; FAULT output triggers graceful shutdown. Use Value: Integrated buck regulator powers both controller and power stages from single 3.3V plane, reducing layer count and improving power integrity in dense switch PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiphase controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2965GQ-Z | Single-output only; no integrated buck regulator; requires external 1.8V bias; supports up to 8 phases but lacks AMS and OCR. | Better suited for cost-sensitive, single-rail applications where thermal balancing and transient optimization are secondary. | Select MP2965GQ-Z when designing single-output systems with existing 1.8V bias and simpler telemetry needs. |
| ISL91302BIRZ-T7A | Dual-output with integrated buck, but limited to 4 phases total; supports only 0.3–1.5V output range; no PMBus v1.3 compliance - uses proprietary I²C command set. | Targeted at mobile/embedded SoCs rather than high-current infrastructure; lacks remote sensing and power-stage thermal monitoring. | Choose ISL91302BIRZ-T7A for compact, battery-powered designs where footprint and quiescent current outweigh telemetry depth. |
Compared with MP2965GQ-Z and ISL91302BIRZ-T7A, the MAX20754ETMA2+T uniquely combines dual-rail flexibility, six-phase scalability, integrated bias generation, AMS-enhanced transients, and full PMBus 1.3 telemetry - making it optimal for infrastructure-class power delivery where reliability, precision, and configurability are mandatory.
Availability
MAX20754ETMA2+T is available at Aetrix Electronics and suitable for communication infrastructure, enterprise servers, and high-end networking equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX20754ETMA2+T 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
Maxim Integrated, now part of Analog Devices, designs high-performance analog and mixed-signal ICs for power, sensing, and connectivity applications.
The MAX20754 belongs to Maxim's Dual Powertrain™ controller family, engineered specifically for high-efficiency, high-current, digitally managed power delivery in data center and telecom infrastructure.
FAQ
What is the output voltage range supported by the MAX20754ETMA2+T?
The MAX20754ETMA2+T supports an output voltage range of 0.25V to 2.0V per rail, as confirmed by its datasheet revision 6 specification for the ETMA2+ variant. This range is enabled by internal DAC resolution and VOUT_COMMAND register mapping, allowing precise regulation for modern low-voltage ASIC, FPGA, and DDR memory rails. The MAX20754ETMA2+T achieves ±10mV absolute accuracy in the 0.25V–1.0V band and ±1.1% relative accuracy above 1.0V across temperature.
Does the MAX20754ETMA2+T include an integrated power supply for its own operation?
Yes, the MAX20754ETMA2+T integrates a 1.875V buck regulator capable of delivering 700mA, powered from a 3.3V input (VDD3P3). This regulator supplies both the controller's internal logic and external Maxim Dual Powertrain™ power stages, eliminating the need for separate bias supplies. The MAX20754ETMA2+T uses LX, PGND, and VDD3P3 pins to implement this function, with thermal design accounting for 1°C/W junction-to-case resistance.
How does the Advanced Modulation Scheme (AMS) in the MAX20754ETMA2+T improve transient response?
The AMS in the MAX20754ETMA2+T dynamically advances or delays the next PWM pulse edge following a load step - unlike fixed-frequency PWM where edges occur at rigid intervals. During a 10A/µs load increase, AMS reduces voltage droop by >50% compared to conventional control, directly lowering required output capacitance. The MAX20754ETMA2+T allows AMS to be disabled via PMBus command for strict fixed-frequency operation when EMI constraints demand deterministic switching.
Can the MAX20754ETMA2+T be configured without using the PMBus interface?
Yes, the MAX20754ETMA2+T supports resistor-strapped initial configuration using five external precision resistors: RREF sets reference voltage, PGMA–PGMD configure default VOUT, switching frequency, PMBus address, and current limit. This enables full hardware-based bring-up without firmware or PMBus host dependency. All settings remain fully reconfigurable at runtime via PMBus commands, and the MAX20754ETMA2+T stores modified parameters in nonvolatile memory for consistent boot behavior.
What thermal monitoring capabilities does the MAX20754ETMA2+T provide for external power stages?
The MAX20754ETMA2+T provides dedicated TS1 and TS2 inputs that accept combined temperature/fault signals from Maxim Dual Powertrain™ power stages. These inputs enable real-time thermal monitoring of each output rail's power train, triggering FAULT assertion and automatic shutdown if thresholds are exceeded. The MAX20754ETMA2+T reports temperature data via READ_TEMPERATURE_2 with ±1.5% gain accuracy and ±8 LSB offset error, supporting closed-loop thermal management in server and networking platforms.
MAX20754ETMA2+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 48-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Applications:
- Power Supply Controller
- Voltage - Input:
- 16V
- Voltage - Supply:
- 1.71V ~ 1.98V, 2.97V ~ 3.63V
- Current - Supply:
- 3 mA
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TQFN (7x7)
MAX20754ETMA2+T FAQ
1.How can I place an order for MAX20754ETMA2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20754ETMA2+T 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 MAX20754ETMA2+T reliable?
The price and inventory of MAX20754ETMA2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20754ETMA2+T is usually 5 days.
3.What payment methods are accepted for MAX20754ETMA2+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20754ETMA2+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20754ETMA2+T?
MAX20754ETMA2+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20754ETMA2+T 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 MAX20754ETMA2+T?
For technical support, including MAX20754ETMA2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20754ETMA2+T requirements.
6.How does Aetrix verify that MAX20754ETMA2+T is sourced from the original manufacturer or authorized distributors?
All MAX20754ETMA2+T 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 MAX20754ETMA2+T meets industry standards.
7.What is the process for return or replacement of MAX20754ETMA2+T?
All MAX20754ETMA2+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20754ETMA2+T, 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 MAX20754ETMA2+T part is unused and in its original packaging.
Return procedure for MAX20754ETMA2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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