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Monolithic Power Systems Inc. MPQ8632GLE-6-Z
- Part No.:
- MPQ8632GLE-6-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 16-PowerVFQFN
- Datasheet:
-
MPQ8632GLE-6-Z.pdf
- Description:
- IC REG BUCK ADJ 6A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:9,751
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Product details
Overview
MPQ8632GLE-6-Z from Monolithic Power Systems is a fully integrated 6A synchronous step-down DC/DC converter with 2.5V–18V input range, Constant-On-Time (COT) control, non-latch over-voltage protection, and 0.611V–13V adjustable output voltage. It delivers high efficiency in telecom power supplies, server VRMs, and distributed power systems using internal MOSFETs with 15.8 mΩ low-side RDS(ON) and 28 mΩ high-side RDS(ON) at 25°C.
For engineers reviewing the MPQ8632GLE-6-Z datasheet, MPQ8632GLE-6-Z pinout, MPQ8632GLE-6-Z application, or MPQ8632GLE-6-Z equivalent, this page provides verified technical context, validated pin functions, confirmed thermal and electrical specifications, real-world application cards, and two rigorously cross-checked alternative parts for 6A buck converter selection.
Technical Context
The MPQ8632GLE-6-Z implements adaptive COT control with feed-forward frequency stabilization via the FREQ pin resistor, enabling ultrafast transient response without external compensation. Its internal 4.8V VCC LDO powers gate drivers, while bootstrap circuitry supports high-side MOSFET operation with programmable dead time to prevent shoot-through.
It operates in PWM mode under continuous conduction (CCM) above critical load (~1.5A at 12VIN/1VOUT/500kHz), transitions to skip-mode DCM at light load for >85% efficiency at 10mA, and integrates non-latch OCP, OVP, UVP, and thermal shutdown with 150°C trip point and 25°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 6A continuous - supports mid-power server rails and FPGA core supplies without external current sharing. |
| Input Voltage Range | 2.5V–18V - enables single-rail operation from 3.3V logic supplies (with 5V bias) or 12V/15V system rails. |
| Switching Frequency | 200kHz–1MHz - set by external RFREQ resistor; maintains stable frequency across input variation via feed-forward. |
| Reference Voltage | 0.611V ±0.009V (0°C–70°C) - enables precise 0.6V–13V output regulation with <±1% line/load error. |
| High-Side RDS(ON) | 28 mΩ at 25°C - reduces conduction loss in high-duty-cycle applications like 5V→3.3V conversion. |
| Low-Side RDS(ON) | 15.8 mΩ at 25°C - minimizes bottom-FET loss during freewheeling, improving full-load efficiency. |
| Thermal Shutdown | 150°C with 25°C hysteresis - protects against sustained overload or poor PCB thermal design without latch-up. |
Pinout & Package
MPQ8632GLE-6-Z uses a thermally enhanced 16-pin QFN package (3mm × 4mm, 0.5mm pitch) with exposed thermal pad. Pin 1 is EN (top-left corner, marked dot), and pins 9/14 are IN, pins 10–13 are PGND, pins 15/16 are SW - all optimized for high-current routing and thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 EN | Enable control input | Digital ON/OFF control; requires pull-up to IN or resistive divider for UVLO-adjusted startup; not floatable. |
| 2 FREQ | Frequency programming node | Connects to IN via resistor (e.g., 453kΩ → 500kHz); enables line feed-forward for stable switching frequency. |
| 3 FB | Feedback sensing input | Monitors output via resistor divider; sets VOUT = 0.611V × (1 + R1/R2); also triggers OVP at 130% VFB. |
| 4 SS | Soft-start timing node | External capacitor (e.g., 33nF) controls output ramp rate; prevents inrush current into bulk capacitors. |
| 5 AGND | Analog ground reference | Separate ground for control circuitry; must be star-connected to PGND near IC to avoid noise coupling. |
| 6 PG | Open-drain power-good signal | Asserts HIGH when VOUT ≥ 90% nominal; requires 100kΩ pull-up; includes 2.5ms delay for stable regulation. |
| 7 VCC | Internal 4.8V LDO output | Powers gate drivers and logic; bypass with ≥1µF X7R ceramic; disableable with external 5V bias. |
| 8 BST | Bootstrap supply node | Connects to SW via 0.1µF ceramic; forms floating rail for high-side driver; critical for 100% duty cycle capability. |
| 9,14 IN | Main power input | Accepts 2.5V–18V (with 5V bias) or 4.5V–18V (internal bias); requires low-ESR input capacitor and wide copper pours. |
| 10–13 PGND | Power ground return | High-current return path for SW and IN; must connect directly to thermal pad and minimize loop area. |
| 15,16 SW | Switch node output | Drives external inductor; swings from ~0V to VIN; requires short, wide traces and multiple vias to thermal pad. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive COT control | Eliminates external compensation network; achieves <10µs load transient recovery for CPU/GPU rails. |
| Programmable soft start | Adjustable ramp time via SS capacitor prevents inrush into downstream loads and avoids input droop. |
| Pre-bias start-up | Safely starts into pre-charged output (e.g., hot-swap systems) without reverse current or output collapse. |
| Non-latch OVP/OCP | Auto-recover after fault clears - avoids system lockup during momentary overloads or surges. |
| Integrated thermal shutdown | 150°C junction limit with 25°C hysteresis ensures safe derating and graceful fallback in constrained layouts. |
Applications
| Telecom Power Supply | Server VRM Core Rail |
|---|---|
|
Use Scenario: 12V intermediate bus conversion to 3.3V/2.5V for baseband processing units in 5G remote radio heads. IC Role / Device Role / Timing Role: Primary buck regulator delivering regulated 3.3V @ 4–6A with fast load-step response to handle bursty DSP workloads. Use Value: Adaptive COT control maintains <±1% output regulation during 4A/µs transients; 28 mΩ HS-FET limits conduction loss at 30% duty cycle. |
Use Scenario: Point-of-load (POL) conversion for FPGA or ASIC core voltage (e.g., 0.85V @ 6A) in edge server motherboards. IC Role / Device Role / Timing Role: High-efficiency synchronous buck supplying dynamic core voltage with tight ripple (<10mVpp) and PG monitoring. Use Value: 0.611V reference enables accurate low-VOUT setting; PG signal validates rail stability before logic initialization. |
| Distributed Power System | Industrial Control I/O Module |
|
Use Scenario: Local 5V/6A rail generation from 24V backplane in modular PLC chassis with multiple isolated domains. IC Role / Device Role / Timing Role: Compact, self-contained buck converter replacing discrete controllers + MOSFETs to reduce BOM count and layout area. Use Value: 3mm×4mm QFN footprint matches industry-standard POL footprints; integrated MOSFETs eliminate gate-drive complexity. |
Use Scenario: Powering isolated analog front-ends (ADCs, sensors) and microcontrollers in harsh industrial environments (-40°C to +105°C). IC Role / Device Role / Timing Role: Robust primary DC/DC stage with thermal shutdown and non-latch protection to survive brownouts and ESD events. Use Value: -40°C to +125°C operating range and 150°C thermal cutoff ensure reliability; 2.5V min input supports degraded 3.3V backup rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 6A synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ8632GLE-4-Z | 4A rated; identical 3×4mm QFN package and pinout; higher HS/LS RDS(ON) (28/16.4 mΩ) | Lower output current margin; suitable only where peak load ≤4A and thermal headroom exists | Select if cost sensitivity outweighs current headroom; verify thermal rise at 4A full load. |
| RTQ2132BGQW-Z | Richtek 6A buck; 2.5V–18V input; 0.6V ref; but uses peak-current-mode control and requires external compensation | Lacks adaptive COT; slower transient response; needs extra components for stability | Choose only if existing design uses Richtek ecosystem; expect longer loop tuning and larger output caps. |
Compared with MPQ8632GLE-6-Z, MPQ8632GLE-4-Z offers pin-compatible down-rating with higher conduction loss, while RTQ2132BGQW-Z requires redesign for compensation and delivers inferior transient performance despite matching current rating.
Availability
MPQ8632GLE-6-Z is available at Aetrix Electronics and suitable for telecom infrastructure, server power delivery, and industrial embedded systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MPQ8632GLE-6-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 expertise in DC/DC conversion, motor drivers, and LED lighting controllers.
The MPQ8632 family targets high-density, high-efficiency point-of-load applications in networking, computing, and industrial equipment, emphasizing integration, thermal robustness, and ease of use through COT architecture.
FAQ
What is the minimum input voltage supported by MPQ8632GLE-6-Z?
The MPQ8632GLE-6-Z supports 2.5V minimum input when an external 5V bias is applied to the VCC pin, enabling operation from low-voltage batteries or partially discharged rails. With internal VCC bias only, the minimum input is 4.5V per datasheet Section 7.2.
Can MPQ8632GLE-6-Z operate in discontinuous conduction mode (DCM)?
Yes - it automatically transitions to DCM at light loads via its current-modulator circuit, disabling the low-side FET when inductor current reaches zero. This skip-mode operation improves light-load efficiency and eliminates reverse inductor current.
How is the switching frequency set and stabilized?
Frequency is set by connecting a resistor between FREQ and IN pins (e.g., 453kΩ yields ~500kHz). The IC uses feed-forward compensation: the IN voltage directly modulates the one-shot on-time timer, keeping frequency nearly constant across input voltage variations.
What thermal performance can be expected in a standard 4-layer PCB layout?
With JEDEC-standard 4-layer board (2 oz Cu, 1"² thermal pad), θJA is 46°C/W. At 6A/12VIN/3.3VOUT, typical power dissipation is ~1.2W, resulting in ~55°C junction rise above ambient - well within the 125°C max operating range.
Is pre-bias start-up supported, and how does it function?
Yes - the MPQ8632GLE-6-Z safely starts into a pre-charged output by disabling the low-side FET during startup, preventing reverse current flow from the output capacitor into the IC. This avoids output collapse and protects downstream loads.
What protection features are implemented, and are they auto-recovering?
It integrates non-latch over-current protection (OCP), over-voltage protection (OVP), under-voltage lockout (UVLO), and thermal shutdown. All protections auto-recover once the fault condition clears - no manual reset or power cycle required.
Does MPQ8632GLE-6-Z require external bootstrap diode or capacitor?
No external diode is needed - the IC integrates bootstrap charging circuitry. A 0.1µF X7R ceramic capacitor must be placed between BST and SW pins; placement must be adjacent to the IC with minimal trace length to ensure reliable high-side drive.
MPQ8632GLE-6-Z 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:
- 6A
- 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-6-Z FAQ
1.How can I place an order for MPQ8632GLE-6-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ8632GLE-6-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 MPQ8632GLE-6-Z reliable?
The price and inventory of MPQ8632GLE-6-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ8632GLE-6-Z is usually 5 days.
3.What payment methods are accepted for MPQ8632GLE-6-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ8632GLE-6-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ8632GLE-6-Z?
MPQ8632GLE-6-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ8632GLE-6-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 MPQ8632GLE-6-Z?
For technical support, including MPQ8632GLE-6-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ8632GLE-6-Z requirements.
6.How does Aetrix verify that MPQ8632GLE-6-Z is sourced from the original manufacturer or authorized distributors?
All MPQ8632GLE-6-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 MPQ8632GLE-6-Z meets industry standards.
7.What is the process for return or replacement of MPQ8632GLE-6-Z?
All MPQ8632GLE-6-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ8632GLE-6-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 MPQ8632GLE-6-Z part is unused and in its original packaging.
Return procedure for MPQ8632GLE-6-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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