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Monolithic Power Systems Inc. MP2932GQK-LF-Z
- Part No.:
- MP2932GQK-LF-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Special Purpose Regulators
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
MP2932GQK-LF-Z.pdf
- Description:
- IC REG CTRLR INTEL 1OUT 48QFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MP2932GQK-LF-Z from Monolithic Power Systems is a 6-phase synchronous buck PWM controller for microprocessor core voltage regulation, supporting VR10/VR11 protocols with 8-bit DAC-based dynamic VID programming, ±0.5% system voltage accuracy (ID = 1V–1.6V), dual-edge PWM architecture, and precision DCR/resistor current sensing. It delivers fast load transient response in server/desktop CPU power delivery applications.
For engineers reviewing the MP2932GQK-LF-Z datasheet, MP2932GQK-LF-Z pinout, MP2932GQK-LF-Z application, or MP2932GQK-LF-Z equivalent, key selection criteria include phase configurability (2–6 phases), channel-current balancing tolerance (±3 μA per channel), voltage droop implementation via IDROOP/IOUT, thermal monitoring (VR_HOT/VR_FAN), and compatibility with MPS Intelli-phase drivers.
Technical Context
The MP2932 implements dual-edge PWM modulation to minimize output capacitor count during load transients, with interleaved phase timing controlled by internal logic that monitors PWM3–PWM6 states to configure 2–6 active phases. Its remote-sense amplifier provides 20 MHz bandwidth and supports differential VSEN/RGND inputs for accurate core voltage regulation.
Voltage droop is implemented via analog current summation: IOUT pin outputs a voltage proportional to total load current, while IDROOP sinks current proportional to per-channel sensed current (47–53 μA typical at 50 μA input), enabling programmable load-line slope through external RFB. Thermal monitoring uses TM pin with NTC thermistor to generate VR_HOT and VR_FAN open-drain alerts at defined voltage thresholds (e.g., VR_HOT trip at 1.4 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Phases | Configurable 2-, 3-, 4-, 5-, or 6-phase operation via PWM pin strapping; enables ripple reduction and scalable current handling. |
| Switching Frequency | Adjustable 80 kHz–1 MHz via FS pin resistor; typical 600 kHz at RT = 100 kΩ for optimal efficiency in high-current CPU rails. |
| Voltage Accuracy | ±0.5% system accuracy over ID = 1V–1.6V range; ensures tight core voltage compliance for Intel VR11/VR10 specifications. |
| Current Sensing | Supports precision DCR or resistive sensing; channel current balance tolerance ±3 μA ensures <±1% inter-phase current mismatch. |
| Soft-Start Ramp Rate | Adjustable 0.625–6.25 mV/μs via SS pin resistor; enables controlled voltage ramp to prevent inrush and ensure stable VID acquisition. |
| Thermal Trip Thresholds | VR_HOT trips at 1.4 V (±0.1 V), VR_FAN at 1.65 V (±0.1 V); allows discrete NTC-based thermal protection without external ADC. |
| OCP Thresholds | Average-current OCP at 85 μA (72–98 μA range); per-channel peak OCP at 120 μA - enables hiccup-mode fault recovery and cycle-by-cycle limiting. |
Pinout & Package
MP2932GQK-LF-Z is housed in a 48-pin QFN package (6 mm × 6 mm, 0.4 mm pitch) with exposed thermal pad. Pin numbering follows standard top-down, counter-clockwise layout starting from top-left corner (Pin 1 = ID7).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ID0–ID7 | VID code inputs | 8-bit parallel interface for dynamic output voltage selection per VR11/VR10 spec; determines DAC reference voltage. |
| VRSEL | VR protocol selector | Grounded → extended VR10 mode; floating/high → VR11 mode; sets internal DAC decoding logic. |
| IOUT / IDROOP | Load-current sensing outputs | IOUT voltage ∝ total load current; IDROOP current ∝ per-channel current - enables precise droop slope implementation. |
| PWM1–PWM6 | Phase gate-drive outputs | Push-pull PWM signals synchronized to interleaved phases; drive MPS Intelli-phase drivers (e.g., MP8688) in Hi-Z shutdown state. |
| ISEN1+/- to ISEN6+/- | Differential current sense inputs | Accept DCR or resistor-based current sense signals; enable cycle-by-cycle current limiting and channel balancing. |
| VR_RDY / VR_HOT / VR_FAN | Open-drain status outputs | VR_RDY asserts after soft-start and valid VID lock; VR_HOT/VR_FAN signal thermal faults - require external pull-up resistors. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-edge PWM control | Enables simultaneous multi-phase turn-on during load steps - reduces required bulk capacitance by >40% vs. single-edge controllers. |
| Programmable voltage droop | Implemented via IDROOP/IOUT pins and external RFB; achieves Intel-compliant load-line slope without digital compensation. |
| Channel-current balancing | Active analog averaging of all active phase currents - maintains ≤±1% inter-phase current deviation under 100 A total load. |
| Integrated thermal monitoring | TM pin interfaces directly with NTC thermistor; generates VR_HOT/VR_FAN alerts at factory-trimmed thresholds - eliminates need for external thermal IC. |
| Multi-rail sequencing support | EN_PWR and EN_VTT enable pins with independent 0.88 V thresholds - coordinate startup with VCC, VTT, and driver ICs per Intel VR power tree requirements. |
Applications
| Desktop CPU Core Power | Server Processor VR |
|---|---|
Use Scenario: Regulating core voltage for Intel LGA1700/AM5 desktop CPUs with dynamic VID scaling across P-states. IC Role / Device Role / Timing Role: Primary multiphase VR controller managing up to 6 interleaved buck stages; executes VR11 protocol handshake and droop compensation. Use Value: Dual-edge PWM and 6-phase capability reduce output ripple to <5 mVpp, enabling smaller ceramic capacitor arrays and lower ESR requirements. | Use Scenario: High-current core rail (up to 300 A) for dual-socket Xeon Scalable platforms with strict transient response specs. IC Role / Device Role / Timing Role: Master controller coordinating phase shedding, current balancing, and thermal derating via VR_HOT/VR_FAN signals. Use Value: Channel-current balancing tolerance of ±3 μA ensures uniform MOSFET stress across all 6 phases - extends power stage lifetime under sustained 200 A loads. |
| Memory Subsystem POL | AI Accelerator Core Rail |
Use Scenario: Point-of-load regulation for DDR5 memory subsystems requiring tight voltage tracking and fast transient recovery. IC Role / Device Role / Timing Role: Secondary VR controller implementing VR10-compatible VID interface; uses ISEN inputs for DCR-based current sensing on low-inductance chokes. Use Value: Adjustable soft-start ramp rate (0.625–6.25 mV/μs) prevents overshoot during memory initialization sequences - avoids VDDQ lockup. | Use Scenario: Core voltage supply for GPU/AI accelerator ASICs with aggressive DVFS profiles and thermal throttling requirements. IC Role / Device Role / Timing Role: Multiphase controller integrating TM-based thermal feedback loop; triggers VR_HOT alert before junction temperature exceeds 110°C. Use Value: Direct NTC-to-VR_HOT conversion eliminates ADC latency - enables sub-100 ms thermal shutdown response critical for AI inference workloads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiphase VR controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6367IRZ | 7-phase capable; uses different VID encoding (VR12.5); no integrated TM pin - requires external thermal IC. | Targeted at newer Intel 12th-gen+ platforms with VR12.5 compliance; lacks native NTC interface for VR thermal monitoring. | Select when upgrading to VR12.5 systems or requiring >6 phases; verify compatibility with existing VID decode logic and thermal architecture. |
| RT8803AGQW | 6-phase; supports VR11/VR10 but uses 6-bit VID; lower voltage accuracy (±0.8%) and no dual-edge PWM - slower transient response. | Suitable for cost-sensitive client platforms where 6-phase scalability is needed but sub-50 ns load-step response is not required. | Choose for legacy VR11 designs with relaxed accuracy/timing specs; avoid if droop slope precision or thermal integration are critical. |
Compared with ISL6367IRZ and RT8803AGQW, MP2932GQK-LF-Z uniquely combines VR10/VR11 dual-mode support, dual-edge PWM for <100 ns load-step recovery, and integrated NTC-based thermal monitoring - making it optimal for high-performance server/desktop VRs requiring minimal external components and guaranteed droop linearity.
Availability
MP2932GQK-LF-Z is available at Aetrix Electronics and suitable for desktop CPU core power, server processor VR, and AI accelerator core rail applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MP2932GQK-LF-Z 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 analog and mixed-signal ICs for power management, with design centers in the US, China, and Taiwan.
The MP2932 belongs to MPS's VR controller product line, engineered specifically for Intel and AMD microprocessor core voltage regulation - emphasizing phase scalability, droop accuracy, and seamless integration with MPS Intelli-phase driver families.
FAQ
What is the function of the OFS pin on MP2932GQK-LF-Z?
The OFS pin programs a DC offset between REF and DAC pins using an external resistor to GND (negative offset, regulated to 0.4 V) or VCC (positive offset, regulated to 1.6 V). This enables fine-tuning of no-load output voltage without modifying VID codes - critical for meeting tight VR11/VR10 margining requirements.
How does MP2932GQK-LF-Z implement voltage droop?
MP2932GQK-LF-Z implements voltage droop by sinking current from the IDROOP pin proportional to per-channel sensed current, while sourcing current from IOUT proportional to total load current. An external resistor RFB between FB and VDIFF converts this current into a voltage drop (VDROOP), reducing output voltage linearly with load - satisfying Intel VR load-line specifications.
Can MP2932GQK-LF-Z operate with fewer than six phases?
Yes - MP2932GQK-LF-Z supports 2-, 3-, 4-, or 5-phase operation by strapping PWM3–PWM6 pins to VCC. For example, tying PWM3 to VCC configures 2-phase mode (PWM1/PWM2 active); tying PWM6 to VCC enables 5-phase mode. Phase count is auto-detected and balanced without firmware intervention.
What thermal protection features does MP2932GQK-LF-Z provide?
MP2932GQK-LF-Z provides two independent thermal alerts: VR_HOT triggers at 1.4 V (±0.1 V) and VR_FAN at 1.65 V (±0.1 V), both open-drain outputs requiring external pull-ups. These signals interface directly with NTC thermistors on the TM pin - enabling real-time VR temperature monitoring without external ADCs or microcontrollers.
What is the role of the SD pin in MP2932GQK-LF-Z?
The SD (Shutdown) pin drives the enable input of MPS Intelli-phase drivers (e.g., MP8688) into high-impedance state during fault conditions or shutdown. When MP2932 detects overvoltage, overcurrent, or thermal fault, it pulls SD low within 20 ns - ensuring immediate turn-off of all high-side FETs and preventing damage to downstream power stages.
How does MP2932GQK-LF-Z handle overvoltage protection?
MP2932GQK-LF-Z provides dual-stage OVP: during soft-start or invalid VID, trip threshold is fixed at 1.275 V; after valid VID acquisition, threshold shifts to DAC + 175 mV. Upon detection, all PWM outputs go low instantly, LS-FETs turn on to discharge output, then SD pulls low and PWM enters Hi-Z - requiring EN_PWR/VCC reset to resume operation.
Is MP2932GQK-LF-Z compatible with non-MPS gate drivers?
Yes - MP2932GQK-LF-Z outputs standard push-pull PWM signals (0.5 V low / 4.3 V high thresholds) compatible with third-party drivers. However, full benefit of Intelli-phase integration (e.g., SD-driven Hi-Z shutdown, optimized timing) requires MPS drivers like MP8688 or MP8698; external drivers need separate enable/control logic.
MP2932GQK-LF-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Applications:
- Controller, Intel VR10, VR11
- Voltage - Input:
- 4.75V ~ 5.25V
- Number of Outputs:
- 1
- Voltage - Output:
- Programmable
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-QFN (6x6)
MP2932GQK-LF-Z FAQ
1.How can I place an order for MP2932GQK-LF-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2932GQK-LF-Z 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 MP2932GQK-LF-Z reliable?
The price and inventory of MP2932GQK-LF-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2932GQK-LF-Z is usually 5 days.
3.What payment methods are accepted for MP2932GQK-LF-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2932GQK-LF-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2932GQK-LF-Z?
MP2932GQK-LF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2932GQK-LF-Z 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 MP2932GQK-LF-Z?
For technical support, including MP2932GQK-LF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2932GQK-LF-Z requirements.
6.How does Aetrix verify that MP2932GQK-LF-Z is sourced from the original manufacturer or authorized distributors?
All MP2932GQK-LF-Z 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 MP2932GQK-LF-Z meets industry standards.
7.What is the process for return or replacement of MP2932GQK-LF-Z?
All MP2932GQK-LF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2932GQK-LF-Z, 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 MP2932GQK-LF-Z part is unused and in its original packaging.
Return procedure for MP2932GQK-LF-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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