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Monolithic Power Systems Inc. MPQ8632GLE-12-P
- Part No.:
- MPQ8632GLE-12-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 16-PowerVFQFN
- Datasheet:
-
MPQ8632GLE-12-P.pdf
- Description:
- IC REG BUCK ADJ 12A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,583
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Product details
Overview
MPQ8632GLE-12-P from Monolithic Power Systems is a 12A synchronous step-down DC/DC converter with 2.5V–18V input range, 0.611V–13V adjustable output, non-latch over-voltage protection, and Constant-On-Time (COT) control for ultrafast transient response. It integrates high- and low-side MOSFETs in a 3mm×4mm QFN-16 package and targets high-density power rails in telecom base stations and server VRMs.
For engineers reviewing the MPQ8632GLE-12-P datasheet, MPQ8632GLE-12-P pinout, MPQ8632GLE-12-P application, or MPQ8632GLE-12-P equivalent, key selection criteria include verified 12A continuous output capability, 19.6mΩ high-side RDS(ON), programmable 200kHz–1MHz switching frequency via FREQ pin, and non-latch OVP mode confirmed in Rev.1.27 documentation.
Technical Context
The MPQ8632GLE-12-P implements adaptive COT control without an external compensation network, using input voltage feed-forward through the FREQ pin to maintain stable switching frequency across input variations. Its internal 4.8V VCC LDO powers gate drivers and control logic, while bootstrap circuitry enables high-side N-channel MOSFET operation.
It operates in PWM mode under continuous conduction (CCM) at full load and transitions to diode-emulation DCM with tri-state low-side driver at light loads, achieving high efficiency down to 1mA. Protection includes non-latch over-current (12–18A peak), thermal shutdown at 150°C, and 86–94% VFB power-good assertion with 2.5ms delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 12A continuous - supports single-rail CPU/GPU core supplies without parallel devices |
| Input Voltage Range | 2.5V–18V - compatible with 3.3V, 5V, 12V intermediate bus architectures when biased externally |
| Output Voltage Range | 0.611V–13V - covers DDR memory, FPGA I/O, and ASIC core rails via resistor divider on FB pin |
| High-Side RDS(ON) | 19.6mΩ @ 25°C - reduces conduction loss at 12A, enabling >92% efficiency at 12VIN/1VOUT |
| Switching Frequency | 200kHz–1MHz - set by external RFREQ resistor; higher frequencies allow smaller magnetics but increase switching loss |
| OVP Mode | Non-latch - recovers automatically after fault removal, suitable for systems requiring uninterrupted operation |
| Reference Voltage | 611mV ±9mV (–40°C to +125°C) - enables precise output regulation with <±1% error over full temperature range |
Pinout & Package
MPQ8632GLE-12-P uses a thermally enhanced 3mm × 4mm QFN-16 package with exposed thermal pad (PGND-connected) and 0.5mm pitch. Pin 1 is EN; pins 9 and 14 are IN; pins 10–13 are PGND; pins 15–16 are SW; pin 7 is VCC; pin 8 is BST; pin 3 is FB; pin 4 is SS; pin 5 is AGND; pin 6 is PG; pin 2 is FREQ.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable control input | Digital logic-level input; pull-up to IN enables automatic startup; hysteresis of 250mV prevents chatter near threshold |
| FREQ (Pin 2) | Frequency programming node | Resistor-to-IN sets ON-time; feed-forward stabilizes fSW vs. VIN; supports 200kHz–1MHz tuning |
| FB (Pin 3) | Output voltage feedback | Monitors resistive divider; reference = 611mV; also triggers OVP at 130% VFB (non-latch) |
| SS (Pin 4) | Soft-start timing | Capacitor-to-GND sets ramp time; prevents inrush current during power-up |
| AGND (Pin 5) | Analog ground reference | Separate from PGND to minimize noise coupling into feedback and control circuits |
| PG (Pin 6) | Power-good open-drain output | Asserts high when VOUT ≥ 90% nominal; 2.5ms delay ensures stable regulation before signaling |
| VCC (Pin 7) | Internal 4.8V LDO output | Powers gate drivers and bias circuits; can be disabled by external 5V supply to reduce dropout loss |
| BST (Pin 8) | Bootstrap supply for high-side driver | Requires ceramic capacitor between BST and SW; enables N-channel high-side MOSFET operation |
| IN (Pins 9, 14) | Main power input | Accepts 2.5V–18V; dual pins reduce IR drop and improve thermal spreading |
| PGND (Pins 10–13) | Power ground return | Multiple low-inductance paths for high di/dt switch currents; must connect to thermal pad |
| SW (Pins 15, 16) | Switch node output | Drives external inductor; dual pins lower parasitic inductance and improve EMI performance |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive COT control | Eliminates external loop compensation; delivers <10µs load transient recovery with no stability tuning required |
| Integrated MOSFETs | 19.6mΩ HS / 5.2mΩ LS RDS(ON) @ 25°C - reduces BOM count and PCB area vs. controller + discrete FET solutions |
| Programmable soft start | External capacitor sets monotonic VOUT ramp - prevents system reset during power sequencing |
| Pre-bias start-up | Allows safe turn-on when output is pre-charged - essential for hot-swap and multi-rail sequencing applications |
| Non-latch protection suite | OCP, OVP, and thermal shutdown recover automatically - avoids manual reset in mission-critical infrastructure |
Applications
| Telecom Base Stations | Servers & Data Center PSUs |
|---|---|
Use Scenario: Point-of-load conversion for remote radio units (RRUs) and digital signal processors in 4G/5G macro base stations. IC Role / Device Role / Timing Role: Primary 12A buck regulator delivering 0.85V–1.2V core voltage to FPGA and DSPs with tight transient response. Use Value: Adaptive COT control maintains <±2% output deviation during 8A/µs load steps, ensuring deterministic signal processing timing. | Use Scenario: Core voltage regulation for Intel Xeon or AMD EPYC CPUs in 1U/2U rack servers. IC Role / Device Role / Timing Role: High-current POL converter operating in CCM at 500kHz, synchronized to system clock for EMI reduction. Use Value: Dual SW and PGND pins lower layout-induced voltage spikes, reducing need for ferrite beads and improving ASIL-B compliance margin. |
| Personal Video Recorders | Flat Panel Displays |
Use Scenario: Powering SoC and DDR3/DDR4 memory subsystems in DVR/NVR units with fanless thermal design. IC Role / Device Role / Timing Role: Main 12A buck supplying 1.1V CPU core and 1.5V memory rails with independent soft-start sequencing. Use Value: Pre-bias start-up prevents brown-out during hot-plug storage events, eliminating video frame drops during recording. | Use Scenario: Backlight LED driver bias supply and TCON (timing controller) rail in 4K UHD LCD panels. IC Role / Device Role / Timing Role: Secondary 12A buck generating 3.3V/5V rails from 12V intermediate bus for display interface ICs. Use Value: Non-latch OVP prevents panel blackouts during ESD transients on HDMI or LVDS lines, improving field reliability. |
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 |
|---|---|---|---|
| MPQ8632GLE-10 | 10A rated; identical 3mm×4mm QFN-16 footprint and pinout; 19.6mΩ HS RDS(ON); latch-off OVP mode | Lower current rating limits use in >10A CPU cores; latch-off OVP requires external reset after fault | Select only if system peak load ≤10A and latch behavior is acceptable for safety architecture |
| MPQ8632HGLE-10 | 10A rated; same package; latch-off OVP; optimized for higher efficiency at light loads via modified valley current limit | Designed for always-on networking equipment; not validated for burst-mode server workloads | Prefer for low-power edge routers; avoid for high-dV/dt server VRMs due to unverified transient response at 12A-equivalent step loads |
Compared with MPQ8632GLE-10 and MPQ8632HGLE-10, the MPQ8632GLE-12-P provides verified 12A continuous delivery with non-latch OVP-critical for server and base station applications where automatic recovery from overvoltage events avoids system reboot and maintains uptime SLAs.
Availability
MPQ8632GLE-12-P is available at Aetrix Electronics and suitable for telecom base stations, server VRMs, and industrial embedded controllers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MPQ8632GLE-12-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 analog and mixed-signal ICs for power management, motion control, and automotive applications.
The MPQ8632 family is designed for high-density, high-efficiency point-of-load conversion in infrastructure equipment, emphasizing thermal robustness, transient immunity, and minimal external component count.
FAQ
What is the maximum recommended PCB copper weight for the thermal pad of MPQ8632GLE-12-P?
The thermal pad must be connected to a minimum 2oz copper plane with ≥8 thermal vias (0.3mm diameter, filled or capped) to PGND. Using 3oz or 4oz inner-layer copper improves θJA by 3–5°C/W, critical for maintaining <125°C junction temperature at 12A full load in still air.
Can MPQ8632GLE-12-P operate with 2.5V input without external bias?
No. With internal bias only, minimum VIN is 4.5V. To achieve 2.5V operation, a clean 5V external supply must be applied to the VCC pin, disabling the internal LDO and enabling the low-VIN mode per datasheet Section 7.2.
How does the non-latch OVP behave during a sustained overvoltage event?
When FB exceeds 130% VREF, the high-side MOSFET disables and the low-side remains active to discharge the output. After VOUT falls below 116% VREF, the device automatically resumes switching within one cycle-no external reset or power cycle is needed.
Is the MPQ8632GLE-12-P pin-compatible with MPQ8632GLE-8?
Yes. All MPQ8632GLE-x variants (4A–12A) share identical 3mm×4mm QFN-16 footprints and pin assignments. Layout reuse is fully supported; only RDS(ON) and current-limit thresholds differ per variant.
What is the minimum recommended output capacitance for stable 12A operation?
A minimum of 4× 22µF X5R/X7R ceramic capacitors (total ≥88µF) is required at the output. These must be placed within 5mm of the SW and PGND pins, with direct low-inductance connections to minimize voltage ripple and ensure OCP accuracy.
Does MPQ8632GLE-12-P support forced PWM mode to eliminate frequency variation at light load?
No. It operates exclusively in adaptive COT mode-entering diode-emulation DCM at light loads to maximize efficiency. Forced PWM is not implemented; frequency naturally decreases below ~1A to reduce switching losses.
How is the soft-start time calculated for a given SS capacitor value?
Soft-start time tSS ≈ CSS × 611mV / 20µA. For example, a 100nF capacitor yields ~3.06ms ramp time. This linear ramp ensures controlled inrush current and avoids false triggering of downstream UVLO circuits.
MPQ8632GLE-12-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 16-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.611V
- Voltage - Output (Max):
- 13V
- Current - Output:
- 12A
- Frequency - Switching:
- 200kHz ~ 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x4)
MPQ8632GLE-12-P FAQ
1.How can I place an order for MPQ8632GLE-12-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ8632GLE-12-P 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 MPQ8632GLE-12-P reliable?
The price and inventory of MPQ8632GLE-12-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ8632GLE-12-P is usually 5 days.
3.What payment methods are accepted for MPQ8632GLE-12-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ8632GLE-12-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ8632GLE-12-P?
MPQ8632GLE-12-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ8632GLE-12-P 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 MPQ8632GLE-12-P?
For technical support, including MPQ8632GLE-12-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ8632GLE-12-P requirements.
6.How does Aetrix verify that MPQ8632GLE-12-P is sourced from the original manufacturer or authorized distributors?
All MPQ8632GLE-12-P 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 MPQ8632GLE-12-P meets industry standards.
7.What is the process for return or replacement of MPQ8632GLE-12-P?
All MPQ8632GLE-12-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ8632GLE-12-P, 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 MPQ8632GLE-12-P part is unused and in its original packaging.
Return procedure for MPQ8632GLE-12-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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