Monolithic Power Systems Inc. MP2926GUT-0000-P

Overview

MP2926GUT-0000-P from Monolithic Power Systems is a triple-loop, digital, multi-phase VR controller for SoC and DDR memory power delivery. It supports up to 2-phase operation per rail (6 total PWM outputs), integrates PMBus/I²C interface (1MHz), on-chip NVM for configuration storage, and nonlinear digital control enabling fast transient response with minimal output capacitance. Used with MPS Intelli-Phase™ DrMOS in telecom base stations and high-performance computing.

For engineers reviewing the MP2926GUT-0000-P datasheet, MP2926GUT-0000-P pinout, MP2926GUT-0000-P application, or MP2926GUT-0000-P equivalent, key selection criteria include triple-rail digital loop architecture, PVID mode support, automatic phase-shedding, remote differential voltage sensing (VOSEN/VORTN), and real-time current monitoring via IMON outputs.

Technical Context

The MP2926 implements a unified digital power loop-applying identical nonlinear control logic for both steady-state regulation and load transients-eliminating separate compensation networks. Its quantum-state detection engine dynamically adjusts PWM on-time using real-time VIN, VOUT, and configured fSW (200kHz–3MHz) per Equation (1).

It embeds three independent ADC channels (10-bit, 780kHz sample rate), dedicated DACs for VID, OCP_SPIKE (8-bit), OCP_PHASE (8-bit), OVP_ABS (8-bit), and VOUT calibration (0.9375mV/LSB), all accessible via PMBus commands including STORE_USER_ALL (15h) and RESTORE_USER_ALL (16h).

Key Specifications

Pinout & Package

MP2926GUT-0000-P is housed in a thermally enhanced QFN-40 (5mm × 5mm) package with exposed thermal pad (AGND). Pin assignment follows TQFN-40 top-view layout per MPS Rev. 1.0 datasheet, with 40 I/O and power terminals.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-phase digital controller applications.

Compared with ISL68224IRAZ-T7A and TPS53689RTAT, MP2926GUT-0000-P uniquely delivers triple-rail autonomy with on-die NVM, PVID mode, and per-rail differential sensing-enabling compact, self-contained VR solutions for heterogeneous SoC platforms without external memory or sensor ICs.

Availability

MP2926GUT-0000-P is available at Aetrix Electronics and suitable for SoC power delivery, DDR memory regulation, telecom base station power, and network switch ASIC supply requiring stable component supply, long-term lifecycle support, and validated PMBus interoperability.

Supply support for MP2926GUT-0000-P 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

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MP2926 belongs to MPS's digital multi-phase controller product line, engineered specifically for high-efficiency, high-density VR solutions in AI accelerators, 5G infrastructure, and advanced computing platforms demanding precise multi-rail coordination and telemetry.

FAQ

What is the function of the STB pin on MP2926GUT-0000-P?

The STB (Standby) pin is an open-drain output that forces connected Intelli-Phase™ DrMOS devices into standby mode when pulled high. It synchronizes with the DrMOS SYNC pin to coordinate power-down sequencing across multiple phases, reducing leakage current during idle states without disabling the controller itself.

How does the MP2926 handle input voltage undershoot during cold-start conditions?

The MP2926 incorporates a programmable VIN UVLO threshold (2.6–2.99V) with 130mV hysteresis. During cold-start, it holds PWM outputs in Hi-Z until VDD33 stabilizes above 2.99V and VINSEN confirms valid input voltage, preventing premature switching and ensuring robust turn-on sequencing before engaging the power stage.

Can the MP2926GUT-0000-P operate without an external NVM or EEPROM?

Yes. The MP2926GUT-0000-P contains on-chip NVM storing factory-default configurations and user-programmed settings. No external memory is required for basic operation, configuration retention, or fault logging-even after power cycling. External EEPROM is unnecessary unless custom firmware extensions are implemented.

What is the maximum supported PMBus clock frequency, and how is timing verified?

The MP2926GUT-0000-P supports PMBus up to 1MHz, with guaranteed timing parameters (e.g., 50ns data setup, 120ns rise/fall) measured per JESD88 and SMBus 3.0 specifications. Timing compliance is confirmed through characterization-not production test-and applies only when using 10pF bus capacitance and proper pull-up resistor values (typically 1.5kΩ for 1MHz).

How does the MP2926 achieve "best transient performance" without analog compensation components?

It uses a unified digital control algorithm that applies identical nonlinear response logic for both steady-state and transient conditions-eliminating separate AC/DC compensation networks. The algorithm calculates real-time PWM on-time using Equation (1) (t_ON = V_OUT / (V_IN × f_SW)), enabling sub-microsecond adaptation to load steps without external RC networks.

Is the PVID mode compatible with standard AMD or Intel processor voltage ID protocols?

Yes. PVID0–PVID2 support 3-bit binary encoding (000–111) mapping to discrete output voltages (e.g., 0.6V–0.8V), aligning with legacy AMD SVI1 and Intel VRD12 PVID signaling conventions. The controller interprets these pins asynchronously and updates VOUT within 1ms-enabling direct integration with processor GPIO-based voltage scaling.