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Monolithic Power Systems Inc. MPQ8632GV-20-Z
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- Part No.:
- MPQ8632GV-20-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 29-VFQFN Exposed Pad
- Datasheet:
-
MPQ8632GV-20-Z.pdf
- Description:
- IC REG BUCK ADJ 20A 29QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,029
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Product details
Overview
MPQ8632GV-20-Z from Monolithic Power Systems is a high-efficiency, 18V-input synchronous step-down DC/DC converter delivering up to 20A output current with 0.611V–13V adjustable output voltage, Constant-On-Time (COT) control for ultrafast transient response, and integrated 9.9mΩ/2.4mΩ high-side/low-side MOSFETs in a 29-pin QFN 5mm×4mm package. It serves as the primary power stage in server VRMs and telecom base station POL converters.
For engineers reviewing the MPQ8632GV-20-Z datasheet, MPQ8632GV-20-Z pinout, MPQ8632GV-20-Z application, or MPQ8632GV-20-Z equivalent, key selection criteria include its non-latch OVP mode, programmable 200kHz–1MHz switching frequency via external resistor, thermal shutdown at 150°C, ±0.5% reference voltage accuracy over –40°C to +125°C, and support for pre-bias startup in distributed power systems.
Technical Context
The MPQ8632GV-20-Z implements adaptive COT control with feed-forward compensation, where input voltage variation directly modulates on-time via the FREQ pin to maintain near-constant switching frequency across 4.5V–18V input range. Its internal 4.8V VCC LDO powers gate drivers, while bootstrap circuitry enables high-side MOSFET operation without external charge pump.
It integrates dual MOSFETs with RDS(ON) of 9.9mΩ (HS) and 2.4mΩ (LS) at TJ = 25°C, enabling >94% peak efficiency at 12VIN/1VOUT. Protection includes non-latch over-current (20A–30A valley limit), 117–123% VFB non-latch OVP, and thermal shutdown with 25°C hysteresis - all implemented in silicon without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 20A continuous - supports high-power POL applications without external current sharing. |
| Input Voltage Range | 4.5V to 18V - compatible with 5V, 12V, and 15V intermediate bus architectures. |
| Output Voltage Range | 0.611V to 13V - covers core logic (0.6–1.2V), I/O (1.8–3.3V), and auxiliary rails (5V, 12V). |
| Switching Frequency | 200kHz to 1MHz - set by external resistor on FREQ pin; higher frequencies reduce inductor/capacitor size. |
| Reference Voltage Accuracy | ±0.5% over 0°C to 70°C junction - ensures tight output regulation for sensitive processors and FPGAs. |
| OVP Mode | Non-latch - recovers automatically after fault removal, suitable for mission-critical power systems. |
| Thermal Shutdown | 150°C with 25°C hysteresis - prevents permanent damage during sustained overload or poor airflow. |
| Package | 29-pin QFN 5mm × 4mm - optimized thermal performance (θJA = 38°C/W) with multiple PGND/SW pins for low-impedance layout. |
Pinout & Package
MPQ8632GV-20-Z uses a thermally enhanced 29-pin QFN package (5mm × 4mm, 0.5mm pitch) with exposed thermal pad. Pin count and layout differ from the 16-pin 3mm×4mm variants - this part shares footprint only with MPQ8632GVE-15.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 24 | EN | Digital enable input; pull high to activate regulator; 1.1–1.5V logic-low threshold enables direct MCU GPIO control. |
| 2, 23 | FREQ | Frequency programming node; resistor to IN sets ON-time and stabilizes fSW against input ripple. |
| 3, 22 | FB | Voltage feedback input; monitors output via resistor divider; triggers OVP at 117–123% VREF. |
| 4, 21 | SS | Soft-start timing capacitor connection; controls output ramp rate to prevent inrush current in multi-rail systems. |
| 5, 20 | AGND | Analog ground reference; must be isolated from power ground to minimize noise coupling into feedback path. |
| 6, 19 | PG | Open-drain power-good signal; asserts high when VOUT ≥ 91% VREF, with 2.5ms delay for sequencing compliance. |
| 7, 18 | VCC | Internal 4.8V LDO output; powers control logic; can be bypassed with external 5V bias to extend input range down to 2.5V. |
| 8, 17 | BST | Bootstrap supply for high-side driver; requires ceramic capacitor between BST and SW to sustain gate drive during 100% duty cycle. |
| 9, 25–29 | SW | Power switch node; connects to inductor and BST cap; multiple parallel pins reduce current density and PCB trace loss. |
| 10–14, 15–16 | PGND | Power ground return; 10 dedicated pins provide low-inductance path for high di/dt currents and thermal conduction. |
| 15, 26 | IN | Main input supply; accepts 4.5V–18V; wide copper pours and multiple vias required to handle 20A peak current. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive COT Control | Eliminates external compensation network; achieves <10μs load transient recovery with no stability tuning. |
| Integrated Power Stage | 9.9mΩ HS-FET + 2.4mΩ LS-FET - reduces BOM count and improves efficiency vs. controller+external MOSFET solutions. |
| Pre-bias Startup | Allows safe turn-on into pre-charged output capacitors - critical for hot-swap and redundant power systems. |
| Programmable Soft Start | Capacitor-controlled ramp prevents output overshoot and inrush stress on downstream loads like ASICs/FPGAs. |
| Non-latch OCP/OVP | Auto-recovery after fault clears - avoids system lockup in telecom and networking equipment requiring high uptime. |
| Thermal Foldback | Reduces output current before reaching 150°C shutdown - maintains partial functionality during thermal overload. |
Applications
| Telecom Base Stations | Servers & Data Centers |
|---|---|
Use Scenario: Point-of-load conversion for FPGA, ASIC, and memory rails in macro/micro base station RF units. IC Role / Device Role / Timing Role: Primary buck regulator supplying 0.85V core voltage at up to 20A with <50μs transient response to burst traffic loads. Use Value: Integrated MOSFETs and COT control eliminate loop compensation, reducing design cycle time by ~3 weeks vs. discrete controller solutions. |
Use Scenario: CPU/GPU core voltage regulation in 1U/2U rack servers with strict thermal envelope constraints. IC Role / Device Role / Timing Role: High-current POL converter operating at 1MHz to shrink 1μH inductors and 220μF POSCAPs, minimizing board area. Use Value: 38°C/W θJA and 29-pin thermal pad enable 20A operation at 70°C ambient without forced airflow - cuts cooling cost by 18%. |
| Personal Video Recorders | Distributed Power Systems |
Use Scenario: Main 12V-to-1.2V/3.3V conversion for SoC and interface ICs in DVR/NVR enclosures with passive cooling. IC Role / Device Role / Timing Role: Single-chip solution replacing dual-phase controllers, supporting pre-bias startup during wake-from-sleep transitions. Use Value: Non-latch OVP prevents system hang during transient surges on shared 12V bus - improves field reliability MTBF by 2.3×. |
Use Scenario: Intermediate bus converter in modular industrial PLCs with multiple isolated downstream rails. IC Role / Device Role / Timing Role: Central 18V input regulator feeding multiple secondary DC/DC modules; PG signal sequences downstream enable timing. Use Value: Open-drain PG with 2.5ms delay ensures clean power-up sequencing across 4+ voltage domains - eliminates boot failures in firmware loading. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ8632GVE-15 | 15A rated; identical 29-pin QFN package but lower RDS(ON) (15mΩ/3mΩ); same pinout and feature set. | Lower max current suits mid-tier servers or storage controllers where 20A headroom is unnecessary. | Select when thermal margin or cost optimization outweighs need for full 20A capability. |
| TPS546D24A | 24A rating; PMBus interface; digital control; 16-pin QFN 4mm×4mm; requires external MOSFETs. | Supports telemetry, margining, and dynamic voltage scaling - suited for AI accelerators requiring real-time rail monitoring. | Choose for systems needing digital configurability and telemetry, accepting higher BOM count and layout complexity. |
Compared with MPQ8632GVE-15, the MPQ8632GV-20-Z delivers 33% higher current in the same footprint with lower conduction loss, while TPS546D24A trades analog simplicity for digital flexibility and higher peak current - making it preferable only when closed-loop telemetry justifies added design overhead.
Availability
MPQ8632GV-20-Z is available at Aetrix Electronics and suitable for telecom base stations, server power supplies, and distributed industrial power systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for MPQ8632GV-20-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 power ICs, with over 20 years of leadership in DC/DC conversion technology and proprietary process innovations.
The MPQ8632 family targets high-density, high-efficiency point-of-load applications in telecom, computing, and industrial systems - designed to replace multi-component solutions with fully integrated, thermally optimized buck regulators.
FAQ
What is the minimum input voltage supported by MPQ8632GV-20-Z?
The MPQ8632GV-20-Z operates from 4.5V to 18V when using its internal 4.8V VCC LDO. With an external 5V bias applied to the VCC pin, the minimum input voltage drops to 2.5V - enabling compatibility with Li-ion battery-backed or low-voltage intermediate bus systems.
How does the FREQ pin set switching frequency?
The FREQ pin connects via an external resistor (RFREQ) to the IN pin. The input voltage and RFREQ jointly determine the one-shot ON-time per Equation 1 in the datasheet, resulting in a switching frequency from 200kHz to 1MHz. Feed-forward from IN stabilizes fSW across input voltage variations.
Can MPQ8632GV-20-Z start into a pre-biased output?
Yes. MPQ8632GV-20-Z supports pre-bias startup: when enabled, it monitors the FB pin and delays high-side MOSFET turn-on until the output voltage falls below the target, preventing reverse current flow and ensuring safe turn-on into charged output capacitors.
What is the purpose of the multiple SW and PGND pins?
The 5 SW pins (pins 15, 25–29) and 10 PGND pins (pins 10–14, 15–16) distribute high di/dt current paths, reduce trace inductance, improve thermal dissipation through the exposed pad, and minimize ground bounce - essential for stable 20A operation with sub-10mV output ripple.
Does MPQ8632GV-20-Z require external compensation components?
No. The adaptive Constant-On-Time (COT) control architecture eliminates the need for external Type-II or Type-III compensation networks. Loop stability is inherent, simplifying layout and reducing component count - only FB divider resistors and input/output capacitors are mandatory.
What protection features are integrated?
MPQ8632GV-20-Z integrates non-latch over-current protection (valley current limit), non-latch over-voltage protection (117–123% VREF), under-voltage lockout (4.1V default), thermal shutdown (150°C), and power-good monitoring - all implemented without external components.
Is the MPQ8632GV-20-Z pin-compatible with other MPQ8632 variants?
No. MPQ8632GV-20-Z uses a 29-pin QFN 5mm×4mm package, while MPQ8632GLE-x variants use a 16-pin QFN 3mm×4mm. Only MPQ8632GVE-15 shares the same 29-pin footprint and pinout - enabling drop-in replacement with reduced current rating.
MPQ8632GV-20-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 29-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.611V
- Voltage - Output (Max):
- 13V
- Current - Output:
- 20A
- Frequency - Switching:
- 200kHz ~ 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 29-QFN (5x4)
MPQ8632GV-20-Z FAQ
1.How can I place an order for MPQ8632GV-20-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ8632GV-20-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 MPQ8632GV-20-Z reliable?
The price and inventory of MPQ8632GV-20-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ8632GV-20-Z is usually 5 days.
3.What payment methods are accepted for MPQ8632GV-20-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ8632GV-20-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ8632GV-20-Z?
MPQ8632GV-20-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ8632GV-20-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 MPQ8632GV-20-Z?
For technical support, including MPQ8632GV-20-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ8632GV-20-Z requirements.
6.How does Aetrix verify that MPQ8632GV-20-Z is sourced from the original manufacturer or authorized distributors?
All MPQ8632GV-20-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 MPQ8632GV-20-Z meets industry standards.
7.What is the process for return or replacement of MPQ8632GV-20-Z?
All MPQ8632GV-20-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ8632GV-20-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 MPQ8632GV-20-Z part is unused and in its original packaging.
Return procedure for MPQ8632GV-20-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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