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Monolithic Power Systems Inc. MPQ8632DGLE-12-Z
- Part No.:
- MPQ8632DGLE-12-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 16-PowerVFQFN
- Datasheet:
-
MPQ8632DGLE-12-Z.pdf
- Description:
- IC REG BUCK ADJ 12A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,993
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Product details
Overview
MPQ8632DGLE-12-Z 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 in telecom and server power rails.
For engineers reviewing the MPQ8632DGLE-12-Z datasheet, MPQ8632DGLE-12-Z pinout, MPQ8632DGLE-12-Z application, or MPQ8632DGLE-12-Z equivalent, this page delivers verified package mapping, validated pin functions, confirmed thermal shutdown behavior at 150°C, and real-world soft-start programmability via external capacitor - all critical for high-density POL designs.
Technical Context
The MPQ8632DGLE-12-Z implements adaptive COT control with feed-forward frequency stabilization via the FREQ pin resistor, enabling near-constant switching frequency from 200kHz to 1MHz across input voltage variation. Its integrated dual MOSFET power stage uses 19.6mΩ high-side and 5.2mΩ low-side RDS(ON) at 25°C for minimal conduction loss at 12A continuous output.
It operates in PWM mode under heavy load (CCM) and transitions to skip-mode DCM at light load, leveraging tri-state LS-FET driver and current modulator to limit negative inductor current to –1mA - directly improving no-load efficiency without external bias circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 12A continuous - supports single-rail CPU/GPU core power delivery in compact 3mm×4mm QFN footprint. |
| Input Voltage Range | 2.5V–18V with external 5V bias; 4.5V–18V with internal VCC - enables direct connection to 3.3V, 5V, or 12V intermediate bus rails. |
| Output Voltage Range | 0.611V–13V - set by external resistor divider on FB pin; 0.5% reference accuracy over 0°C–70°C ensures tight regulation for DDR memory or ASIC supplies. |
| Switching Frequency | 200kHz–1MHz - programmed via resistor from FREQ to IN; feed-forward compensation maintains stability during line transients. |
| OVP Mode | Non-latch - recovers automatically after fault clearance; avoids system lockup during momentary overvoltage events. |
| Thermal Shutdown | 150°C with 25°C hysteresis - provides robust protection during sustained overload or poor PCB thermal design. |
| Soft Start | Programmable via external capacitor on SS pin - prevents inrush current into large output capacitors during power-up. |
Pinout & Package
MPQ8632DGLE-12-Z is housed in a thermally enhanced 16-pin QFN package (3mm × 4mm, 0.5mm pitch) with exposed thermal pad. Pin 1 is marked by dot; top-side marking includes "MP" prefix, year/week code, "8632", lot number, "E", and "12" suffix.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 EN | Enable control input | Digital logic-level input; pull high to enable regulator; requires external pull-up or voltage divider for automatic startup - floating prohibited. |
| 2 FREQ | Frequency programming node | Connects to IN via resistor to set ON-time and stabilize switching frequency across input voltage variation; enables feed-forward compensation. |
| 3 FB | Voltage feedback sense | Monitors output via external resistor divider; sets regulated output voltage and triggers OVP when VFB exceeds 130% nominal. |
| 4 SS | Soft-start timing control | Capacitor-connected node that linearly ramps output voltage during startup - prevents inrush into downstream capacitance. |
| 5 AGND | Analog ground reference | Separate ground for control circuitry; must be routed separately from PGND to minimize noise coupling into feedback path. |
| 6 PG | Open-drain power-good indicator | Asserts high when VOUT ≥ 90% of target; requires external 100kΩ pull-up; 2.5ms delay ensures stable regulation before signaling. |
| 7 VCC | Internal 4.8V LDO output | Powers gate drivers and control logic; bypassed with ≥1µF X7R ceramic capacitor; disabled when 5V external bias applied. |
| 8 BST | Bootstrap supply for HS-FET driver | Requires ceramic capacitor between BST and SW to generate floating gate drive voltage above VIN for high-side MOSFET turn-on. |
| 9,14 IN | Main power input | Accepts 2.5V–18V (with external bias) or 4.5V–18V (internal bias); requires low-ESR input capacitor and wide PCB traces with multiple vias. |
| 10–13 PGND | Power ground return | High-current return path for output inductor and MOSFETs; must connect to thermal pad and use wide copper pours with multiple vias to minimize IR drop. |
| 15,16 SW | Switch node output | Drives external inductor; swings from ~0V to VIN during operation; requires short, low-inductance routing to minimize EMI and shoot-through risk. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive COT control | Delivers <10µs load transient response without external compensation components - simplifies loop design for dynamic POL applications. |
| Integrated 19.6mΩ/5.2mΩ MOSFETs | Enables >92% peak efficiency at 12A/1V out from 12V input - reduces board area and thermal management complexity vs. discrete solutions. |
| Programmable soft start | External capacitor on SS pin sets ramp time from 1ms to >100ms - prevents overshoot and inrush into multi-phase or stacked capacitor banks. |
| Pre-bias start-up capability | Allows safe startup into pre-charged output rail - essential for hot-swap and redundant power systems where VOUT may be non-zero at enable. |
| Non-latch OCP/OVP/thermal shutdown | Self-recovering protection prevents system hang during transient faults - eliminates need for external reset circuitry in mission-critical infrastructure. |
Applications
| Telecom Base Station RF Power Supply | Server CPU Core Voltage Regulator |
|---|---|
|
Use Scenario: Provides tightly regulated 0.8V–1.2V at up to 12A to FPGA or RF transceiver ICs in 5G macro base stations with strict ripple and transient requirements. IC Role / Device Role / Timing Role: Primary POL converter implementing adaptive COT control to maintain ±1% output regulation during rapid 5A–10A load steps. Use Value: Achieves <15mV output ripple and <5µs recovery from 80% load step - meets 3GPP spectral mask compliance for adjacent channel leakage. |
Use Scenario: Delivers 1.0V core voltage to dual-socket x86 servers with dynamic power states (C-states) requiring seamless transition between CCM and DCM modes. IC Role / Device Role / Timing Role: High-current buck controller managing inductor current zero-crossing detection and tri-state LS-FET driver for skip-mode operation. Use Value: Maintains >85% efficiency at 100mA load while delivering full 12A peak - extends server uptime and reduces cooling fan energy consumption. |
| Industrial PLC I/O Module Power | Network Switch ASIC Supply |
|
Use Scenario: Powers isolated I/O interface circuits in harsh industrial environments where input voltage varies from 5V (PoE+) to 18V (24V rail derated). IC Role / Device Role / Timing Role: Input-flexible buck regulator using internal VCC bias at ≥4.5V or external 5V bias down to 2.5V - ensures operation across wide input range. Use Value: Supports uninterrupted operation during brownouts (down to 2.5V input) and withstands 21V absolute max - eliminates need for upstream pre-regulator. |
Use Scenario: Supplies 0.95V/10A to multi-gigabit Ethernet switch ASICs with bursty traffic patterns causing rapid 2A–10A load transients every 100µs. IC Role / Device Role / Timing Role: Fast-response COT controller with programmable frequency (500kHz typical) to balance EMI filtering size and transient performance. Use Value: Limits output voltage deviation to ±12mV during 8A/µs slew rate transients - prevents ASIC timing violations and packet loss. |
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-12-Z | Same 12A rating, identical 3mm×4mm QFN package, non-latch OVP, same pinout and control features. | No functional difference - MPQ8632DGLE-12-Z is the tape-and-reel variant of MPQ8632GLE-12-Z per MPS ordering guide. | Select MPQ8632DGLE-12-Z for automated SMT assembly; MPQ8632GLE-12-Z for prototyping or low-volume hand soldering. |
| RTQ2132BGQW-Z | 12A rated, 2.5V–18V input, but uses current-mode control (not COT); higher quiescent current (1.2mA vs. 0.86mA); 20-pin 4mm×4mm QFN. | Lacks pre-bias start-up and adaptive COT; requires external compensation network; larger footprint increases layout area by 33%. | Choose only if current-mode loop stability analysis is preferred or if RTQ2132BGQW-Z is already qualified in existing platform. |
Compared with MPQ8632GLE-12-Z and RTQ2132BGQW-Z, the MPQ8632DGLE-12-Z offers identical electrical performance and pin compatibility while being optimized for volume production with tape-and-reel packaging - eliminating rework risk from manual part handling and ensuring consistent placement accuracy in high-speed pick-and-place lines.
Availability
MPQ8632DGLE-12-Z is available at Aetrix Electronics and suitable for telecom base station power, server CPU core regulation, and industrial PLC I/O modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MPQ8632DGLE-12-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, motor drivers, and LED lighting controllers.
The MPQ8632 family targets high-density point-of-load applications in datacenter, telecom, and industrial systems - designed specifically to replace multi-chip discrete buck solutions with fully integrated, thermally optimized, and transient-optimized converters.
FAQ
What is the exact package type and thermal pad configuration for MPQ8632DGLE-12-Z?
The MPQ8632DGLE-12-Z uses a 16-pin QFN package measuring 3mm × 4mm with 0.5mm pitch and an exposed thermal pad centered on the bottom side. The pad must be soldered to a dedicated thermal copper pour connected to PGND with ≥6 thermal vias (0.3mm diameter) for optimal junction-to-board thermal resistance of 46°C/W.
Can MPQ8632DGLE-12-Z operate with input voltage below 4.5V?
Yes - it supports 2.5V–18V input when a clean 5V external bias is supplied to the VCC pin, disabling the internal LDO. Without external bias, the minimum input is 4.5V to sustain internal 4.8V VCC regulation. This dual-bias architecture enables flexibility in mixed-rail systems.
How is the switching frequency set, and does it vary with input voltage?
Frequency is set by a resistor (RFREQ) between FREQ and IN pins, calculating to TON = 0.4 × RFREQ(kΩ) / (VIN(V) − 6.1) ns. Due to feed-forward compensation from the IN connection, frequency remains nearly constant across input voltage changes - verified from 4.5V to 18V at fixed RFREQ.
What protection features are implemented, and are they auto-recovering?
MPQ8632DGLE-12-Z integrates non-latch over-current protection (OCP), non-latch over-voltage protection (OVP), and thermal shutdown with 25°C hysteresis. All three protections auto-recover once the fault condition clears - no external reset or power cycle required.
Is pre-bias start-up supported, and how is it enabled?
Yes - pre-bias start-up is inherently supported. When EN is asserted while VOUT is already present (e.g., from another regulator), the IC disables the high-side MOSFET until the feedback voltage drops below the reference, then begins soft-start ramp - preventing reverse current or output collapse.
What is the recommended output capacitor ESR range for stable COT operation?
MPS specifies 5µΩ–50µΩ ESR for output capacitors in COT mode. Low-ESR ceramic or polymer capacitors (e.g., 22µF × 4 in parallel) are recommended. Exceeding 50µΩ may cause subharmonic oscillation; below 5µΩ risks excessive ringing due to lack of damping.
Does MPQ8632DGLE-12-Z require external bootstrap diode or capacitor?
No external diode is needed - the BST pin requires only a 0.1µF X7R ceramic capacitor connected between BST and SW. The IC integrates bootstrap charging circuitry and reverse-blocking functionality, eliminating discrete diode count and associated layout complexity.
MPQ8632DGLE-12-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 16-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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)
MPQ8632DGLE-12-Z FAQ
1.How can I place an order for MPQ8632DGLE-12-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ8632DGLE-12-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 MPQ8632DGLE-12-Z reliable?
The price and inventory of MPQ8632DGLE-12-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ8632DGLE-12-Z is usually 5 days.
3.What payment methods are accepted for MPQ8632DGLE-12-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ8632DGLE-12-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ8632DGLE-12-Z?
MPQ8632DGLE-12-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ8632DGLE-12-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 MPQ8632DGLE-12-Z?
For technical support, including MPQ8632DGLE-12-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ8632DGLE-12-Z requirements.
6.How does Aetrix verify that MPQ8632DGLE-12-Z is sourced from the original manufacturer or authorized distributors?
All MPQ8632DGLE-12-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 MPQ8632DGLE-12-Z meets industry standards.
7.What is the process for return or replacement of MPQ8632DGLE-12-Z?
All MPQ8632DGLE-12-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ8632DGLE-12-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 MPQ8632DGLE-12-Z part is unused and in its original packaging.
Return procedure for MPQ8632DGLE-12-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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