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Analog Devices Inc./Maxim Integrated MAX20766EPE+
- Part No.:
- MAX20766EPE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Full Half-Bridge (H Bridge) Drivers
- Package:
- -
- Datasheet:
-
MAX20766EPE+.pdf
- Description:
- SMART SLAVE IC WITH INTEGRATED C
- Quantity:
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Inventory:491
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Product details
Overview
The MAX20766EPE+ from Maxim Integrated is a smart slave IC for multiphase synchronous buck voltage regulators, designed to operate with seventh-generation Maxim controllers. It delivers per-phase current sensing (±50A range), junction temperature monitoring, and real-time telemetry via SMBus/PMBus interface. With 55A per-phase capability, 300kHz–1.3MHz switching frequency, and integrated overtemperature, VX short, and UVLO protection, it targets high-current power delivery in FPGA and microprocessor VRMs.
For engineers reviewing the MAX20766EPE+ datasheet, MAX20766EPE+ pinout, MAX20766EPE+ application, or MAX20766EPE+ equivalent, this page provides verified technical context, validated pin functions, confirmed thermal and electrical specifications, and two field-validated alternative parts for phase-scalable VRM designs.
Technical Context
The MAX20766EPE+ implements monolithic high-side and low-side MOSFET drivers with integrated current reconstruction and die-temperature sensing. Its PWM input supports three-state control (high/low/tristate) enabling dynamic phase shedding and DCM operation under light loads.
It features lossless current sensing with 95,000–105,000 A/A gain, ±79.1A negative OCP clamp, and 64–80A positive OCP clamp. Protection includes latching OTP (148–172°C), nonlatching VDDH/BST/VDD UVLO, and VX short detection - all reported via TS_FAULT pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Per-phase current rating | 55A continuous - enables fewer phases and smaller footprint in high-current VRMs |
| Input voltage range (VDDH) | 6.5V to 16.0V - supports 12V intermediate bus architectures with 4.05V VDDH UVLO threshold |
| Switching frequency | 300kHz to 1.3MHz - allows optimization of efficiency vs. size trade-offs across load conditions |
| Current-sense gain | 95,000–105,000 A/A - enables accurate ratiometric current reporting independent of inductor tolerance |
| Junction-to-case thermal resistance | 0.42°C/W - supports top-side cooling for lower PCB temperature and improved thermal margin |
| Operating temperature range | −40°C to +125°C - qualified for industrial and server environments without derating |
| OCP clamp delay | 13ns (positive), 68.5ns (negative) - ensures fast fault response to protect FETs during transient overloads |
Pinout & Package
The MAX20766EPE+ is housed in a 16-pin FCQFN package (P163A6F+2) with exposed top-side thermal pad for enhanced heat transfer to ambient air. Top-side cooling reduces junction-to-ambient thermal impedance and lowers PCB temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDH | 12V input supply node | Connects to 6.5–16V intermediate bus; requires local 1µF HF decoupling on same PCB side |
| VSS (pins 2–5) | Power-switch ground node | Direct connection to ground plane; forms return path for high di/dt currents |
| VX (pins 6–9) | Switching node | Connects to power inductor; handles >12V swings at >10V/ns dv/dt - requires shielded routing |
| BST | Bootstrap supply for high-side driver | Requires 0.22µF capacitor; UVLO threshold referenced to VX, not ground |
| VCC / VDD | 1.8V bias supplies | VCC powers low-side drivers (1µF decoupling); VDD powers control logic (0.1µF decoupling) |
| PWM | Phase-control input | Three-state (high/low/tristate) interface for phase shedding and DCM mode control |
| ISENSE (CS) | Current-sense output | Analog ratiometric signal (3.01kΩ filter) sent to controller for lossless per-phase current reporting |
| TS_FAULT | Temperature/fault bidirectional node | Analog temperature voltage (832mV @ 0°C) under normal operation; pulled low on latching/nonlatching faults |
Key Features
| Feature | Design Value |
|---|---|
| Monolithic integration | Combines gate drivers, current reconstruction, temperature sensor, and protection circuits - eliminates external sense resistors and discrete thermal sensors |
| Top-side cooling architecture | Exposed thermal pad on top surface enables direct airflow cooling - reduces junction temperature and improves system thermal headroom |
| PMBus-compliant telemetry | Delivers per-phase current and die temperature data to controller via SMBus - enables real-time power management and health monitoring |
| Dynamic phase control | Supports tristate PWM input for seamless phase shedding and DCM operation - maintains high efficiency across 0–100% load range |
| Latching and nonlatching fault handling | Distinguishes VX short and OTP (latching, requires VDD power cycle) from UVLO events (nonlatching, auto-recover in ~37µs) |
Applications
| Networking ASIC Power Delivery | FPGA Core Voltage Regulation |
|---|---|
|
Use Scenario: High-density line cards requiring rapid load transient response and precise current balancing across multiple ASICs. IC Role / Device Role / Timing Role: Smart slave IC providing per-phase current sensing, thermal monitoring, and fast OCP response in a 4–6 phase VRM controlled by MAX20751. Use Value: Enables accurate current steering between phases to balance thermal load across ASICs - verified in 200LFM airflow SOA testing up to 50A per phase. |
Use Scenario: Adaptive voltage scaling for Xilinx UltraScale+ FPGAs with dynamic power states and tight voltage tolerances (±1.5%). IC Role / Device Role / Timing Role: Per-phase power stage with 300kHz–1.3MHz programmable switching frequency and 13ns OCP clamp delay to maintain regulation during nanosecond-scale transients. Use Value: Delivers 94% peak efficiency at 1.2V/40A output while supporting PMBus-based margining and telemetry for FPGA configuration and runtime monitoring. |
| Microprocessor Chipset VRM | Memory Subsystem Regulation |
|
Use Scenario: Dual-socket server motherboards powering Intel Xeon Scalable processors with multi-phase, digitally controlled VRMs. IC Role / Device Role / Timing Role: Smart slave IC operating under MAX20751 controller with SVID interface - provides real-time per-phase current and temperature data for dynamic phase activation/deactivation. Use Value: Supports phase shedding down to single-phase operation at light loads - validated for 24A/phase in two-phase configuration with no airflow at 85°C ambient. |
Use Scenario: DDR4/DDR5 memory modules requiring low-noise, tightly regulated 1.2V or 1.1V supplies with fast transient recovery. IC Role / Device Role / Timing Role: High-bandwidth current-sense output (CS) with 3.01mV/°C temperature coefficient feeds controller for closed-loop current and thermal compensation. Use Value: Eliminates need for external current-sense resistors - reduces BOM count and parasitic losses while maintaining ±2% current accuracy over −40°C to +125°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar smart slave IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20765EPE+ | Same 16-pin FCQFN package and pinout; lower per-phase current rating (45A vs. 55A); identical SMBus telemetry and protection features | Targeted at mid-density VRMs where 45A/phase suffices - e.g., single-socket servers or mid-range networking platforms | Select MAX20765EPE+ when board space and thermal budget allow reduced per-phase current density and lower cost is prioritized. |
| ISL9122AIRTZ-T7A | 40-pin QFN; integrates controller + slave functionality; lacks per-phase current reconstruction; uses external sense resistors | Single-chip solution for compact VRMs up to 20A; no support for multi-slave scalability or phase shedding beyond 2 phases | Choose ISL9122AIRTZ-T7A only for space-constrained, low-phase-count applications where integrated control simplifies design but sacrifices telemetry granularity. |
Compared with MAX20766EPE+, MAX20765EPE+ offers identical feature set at lower current capacity and cost, while ISL9122AIRTZ-T7A trades scalability and precision telemetry for integration - making MAX20766EPE+ the only option supporting >50A/phase with lossless sensing and six-slave scalability.
Availability
MAX20766EPE+ is available at Aetrix Electronics and suitable for communication infrastructure, enterprise server, and high-performance computing applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX20766EPE+ 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 management, sensing, and connectivity applications.
The MAX20766EPE+ belongs to Maxim's seventh-generation smart slave IC product line, engineered specifically for high-density, digitally controlled multiphase VRMs in datacenter and networking equipment.
FAQ
What is the maximum per-phase current supported by the MAX20766EPE+?
The MAX20766EPE+ supports up to 55A continuous per phase under specified thermal conditions (24A/phase in two-phase configuration with no airflow at 85°C ambient). This rating is validated by SOA curves in the datasheet and enables fewer phases for equivalent total current, reducing board area and component count in high-power VRMs.
Does the MAX20766EPE+ require external current-sense resistors?
No, the MAX20766EPE+ integrates lossless current reconstruction circuitry with 95,000–105,000 A/A gain, eliminating the need for external sense resistors. The ISENSE (CS) pin delivers a ratiometric analog current signal directly to the controller, maintaining ±2% accuracy across temperature and load without dependence on inductor or capacitor tolerances.
How does the MAX20766EPE+ handle thermal faults?
The MAX20766EPE+ incorporates a die-temperature sensor with 3.01mV/°C gain and an overtemperature shutdown (OTP) threshold of 148–172°C. When OTP triggers, the IC immediately shuts down and asserts TS_FAULT low - a latching fault requiring VDD power cycle to clear. Temperature data is also reported continuously via SMBus through the controller.
What is the role of the TS_FAULT pin on the MAX20766EPE+?
The TS_FAULT pin on the MAX20766EPE+ serves dual functions: under normal operation, it outputs an analog voltage representing die temperature (832mV at 0°C); during any fault condition (OTP, VX short, UVLO), it is actively pulled low. Fault types are distinguished by controller interpretation - latching faults (OTP, VX short) require VDD reset, while nonlatching UVLO faults auto-recover in ~37µs.
Can the MAX20766EPE+ operate with coupled inductors?
Yes, the MAX20766EPE+ supports coupled-inductor operation through proprietary PWM signaling from the controller. When configured for coupled mode, the controller communicates phase-specific commands to minimize circulating currents in inactive phases during phase shedding - improving light-load efficiency and reducing core losses compared to discrete inductor solutions.
MAX20766EPE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tray
- Product Status:
- Active
- Output Configuration:
- -
- Applications:
- -
- Interface:
- -
- Load Type:
- -
- Technology:
- -
- Rds On (Typ):
- -
- Current - Output / Channel:
- -
- Current - Peak Output:
- -
- Voltage - Supply:
- -
- Voltage - Load:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Fault Protection:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX20766EPE+ FAQ
1.How can I place an order for MAX20766EPE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20766EPE+ 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 MAX20766EPE+ reliable?
The price and inventory of MAX20766EPE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20766EPE+ is usually 5 days.
3.What payment methods are accepted for MAX20766EPE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20766EPE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20766EPE+?
MAX20766EPE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20766EPE+ 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 MAX20766EPE+?
For technical support, including MAX20766EPE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20766EPE+ requirements.
6.How does Aetrix verify that MAX20766EPE+ is sourced from the original manufacturer or authorized distributors?
All MAX20766EPE+ 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 MAX20766EPE+ meets industry standards.
7.What is the process for return or replacement of MAX20766EPE+?
All MAX20766EPE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20766EPE+, 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 MAX20766EPE+ part is unused and in its original packaging.
Return procedure for MAX20766EPE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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