Mingjiada Electronics Supplies and Purchases the MP2888—an MPS Digital Multi-Phase PWM Controller (PMBus + PWM-VID Dual Interface, Up to 10 Phases, Server/GPU Power Supply)
The MP2888 is a digital multi-phase PWM controller from MPS (Monolithic Power Systems) designed for server CPUs, GPUs, and AI computing boards. It does not perform power conversion itself but acts as the “control hub” for multi-phase voltage regulators (VRs), coordinating the collaborative operation of multiple Intelli-Phase™ power stages to enable dynamic regulation, telemetry, and protection of processor core voltages. Its key differentiator lies in the parallel integration of two interface sets: PMBus/I²C and PWM-VID. PWM-VID handles high-speed voltage regulation handshaking with the processor, while PMBus provides system-level observability and configurability, enabling the MP2888 to possess both “real-time control” and “digital management” capabilities. Mingjiada Electronics provides both supply and acquisition services for the MP2888 (including the MP2888AGU series), covering the entire supply chain from purchasing original equipment manufacturer (OEM) spot goods to managing factory inventory and liquidating project surplus.
I. MP2888 Specifications
Product Category: Digital Multi-Phase PWM Controller
Maximum Number of Phases: 10 phases (configurable)
PWM-VID Interface: Compatible with the OpenVReg specification; supports protocols such as VR13 (5 mV/10 mV DAC) and IMVP9 (5 mV DAC)
System Management Interface: PMBus / I²C, bus rate 1 MHz; compatible with PMBus rev 1.3
PMBus Address: Pin-configurable
Switching Frequency (f_SW): 200 kHz ~ 5 MHz
Vcc Operating Range: 3 V to 3.6 V
Typical Quiescent Current: 30 mA
Shutdown Current: 0.15 mA
Control Architecture: Digital multiphase nonlinear control; single power loop for both steady-state and transient conditions
Loop Compensation: Automatic loop compensation
On-chip Memory: EEPROM for storing and restoring configuration and fault parameters; supports register-mapped password lock
Efficiency Optimization: Automatic Phase Shifting (APS)
Current Balancing: Active current balancing between phases; supports programmable offset for thermal balancing
Telemetry: Output voltage/current, input voltage/power, regulator temperature
Protection Features: VIN UVLO, output OVP/UVP, OCP, OTP; selectable response modes: no action/lockout/retry/hiccup
Fault Logging: Detects Intelli-Phase™ MOSFET fault types and automatically writes them to EEPROM
Operating Temperature: −40°C to +125°C
Package: QFN-40 (5 mm × 5 mm), RoHS compliant
Compatible Power Stage: MPS Intelli-Phase™ Series
II. MP2888 Core Features
1. Dual-Interface Synergy: PWM-VID for “Voltage Regulation,” PMBus for “Management”
The MP2888’s interface design is what sets it apart from generic multi-phase controllers. The PWM-VID interface is compatible with the OpenVReg specification and can directly interface with the VID protocol of NVIDIA GPUs and server CPUs, adjusting the output voltage in real time based on voltage codes issued by the processor. It supports generational specifications such as VR13 and IMVP9. The PMBus/I²C interface serves a “transparency” function: the system can read output voltage, output current, input power, and regulator temperature in real time, and can program fault thresholds and protection modes online. Combined, these features enable the MP2888 to not only meet the processor’s timing and resolution requirements for dynamic voltage regulation but also bring the entire VR under the monitoring scope of the server BMC or system management bus, simplifying the debugging and troubleshooting processes.
2. Digital Nonlinear Control + Single Power Loop: Fast Transients, Reduced Capacitance, Easy Compensation
The MP2888 employs a digital multiphase nonlinear control architecture, with steady-state and load transients sharing the same power loop. Traditional analog controllers often require separate optimization of compensation networks for steady-state accuracy and transient response, whereas the MP2888’s single-loop design, combined with automatic loop compensation, significantly reduces the effort required for compensation configuration. The direct benefit of nonlinear control is evident in the speed of load transient response: when the processor’s load current changes abruptly, the controller can maintain voltage stability with less output capacitance, which is particularly significant for nanosecond-level di/dt scenarios commonly encountered in GPU and CPU power supplies.
3. 10-Phase Scalability + Automatic Phase Shutdown (APS): Efficiency Optimization Across the Full Load Range
The MP2888 can be configured for up to 10 phases in parallel and, when combined with the Intelli-Phase™ power stage, enables the construction of a multi-phase VR with minimal external components. A high number of phases not only distributes per-phase current stress and reduces conduction losses but also improves the uniformity of thermal distribution. The Automatic Phase Shutdown (APS) feature automatically reduces the number of active phases during light loads, lowering switching losses and enabling the VR to maintain efficiency across a wide load range from full load to standby. Active current balancing between phases supports programmable offsets, allowing designers to intentionally allocate current across phases based on the actual thermal layout to achieve controlled thermal balance.
4. On-Chip EEPROM + Comprehensive Protection and Fault Traceback: System-Level Integration for High-Reliability Applications
The MP2888 integrates configuration and fault management within the chip. The EEPROM is used to store custom configurations and fault parameters, and supports register-mapped password protection to prevent accidental overwriting on the production line or in the field. The protection system covers VIN UVLO, output OVP/UVP, OCP, and OTP; the response mode for each protection type can be selected from no action, lockout, retry, and hiccup modes, allowing system designers to make flexible trade-offs based on their fault tolerance strategies. The device can also detect the failure type of Intelli-Phase™ MOSFETs and automatically log it to the EEPROM, providing a data foundation for repair analysis and field failure traceback, thereby reducing reliance on external fault logging circuits.
III. MP2888 Typical Applications
Server CPU Power Supply (VRM/VRD)
In server motherboards, the MP2888 serves as a multiphase controller for CPU core voltages, reporting VR telemetry—including voltage, current, power, and temperature—to the BMC via PMBus, thereby supporting predictive maintenance and power management in data centers. The PWM-VID interface complies with server CPU VID specifications, and its 10-phase expansion capability covers the power supply requirements for everything from mainstream to high-power SKUs.
GPUs and AI Computing Boards
This is one of the MP2888’s most representative application scenarios. The NVIDIA GeForce RTX 3080 Founders Edition, for example, uses a single MP2888A to drive a 9-phase power supply. In gaming and computing scenarios with highly fluctuating GPU loads, the rapid transient response of nonlinear control and the full-load efficiency optimization provided by APS directly impact the graphics card’s stability and energy efficiency. The multi-phase power supply architecture of AI accelerator cards also benefits from 10-phase scalability and PMBus telemetry capabilities.
Communications Infrastructure and High-Power-Density POL
In board-level power supplies for communications equipment such as base stations and switches, the MP2888 can be combined with Intelli-Phase™ power stages to form a compact multi-phase buck solution. A wide switching frequency range from 200 kHz to 5 MHz allows designers to balance efficiency (at lower frequencies) and power density (at higher frequencies) as needed, while the QFN-40 (5 mm × 5 mm) package accommodates space-constrained board layouts.
Mingjiada Electronics Supply and Purchase Information: Mingjiada Electronics (Shenzhen Mingjiada Electronics Co., Ltd.) provides both supply and purchase services for the MPS MP2888 series (including the MP2888AGU). On the supply side, we provide genuine, in-stock products to server, graphics card, and communications equipment manufacturers as well as solution providers, supporting both selection-based procurement and bulk orders; on the procurement side, we consistently source factory inventory, project surplus, and clearance stock—including brand-new, genuine products, full-reel loose components, and hard-to-find models—offering cash settlement and inventory liquidation channels. This model features a QFN-40 (5 mm × 5 mm) package, operates within a temperature range of −40°C to +125°C, and is RoHS compliant. Both supply and buyback inventories are subject to dynamic changes; for final confirmation of actual available quantities, batch status, buyback quotes, and lead times, please contact Mingjiada Electronics’ sales team directly.
Contact Information
Mobile: +86 13410018555
Email: sales@hkmjd.com
Website: www.integrated-ic.com
Tags: MP2888AGU, MP2888AG, MP2888A, MP2888
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