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Monolithic Power Systems Inc. MPQ8632HGLE-10-Z
- Part No.:
- MPQ8632HGLE-10-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 16-PowerVFQFN
- Datasheet:
-
MPQ8632HGLE-10-Z.pdf
- Description:
- IC REG BUCK ADJ 10A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,237
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Product details
Overview
MPQ8632HGLE-10-Z from Monolithic Power Systems is a 10A synchronous step-down DC/DC converter with 2.5V–18V input range, non-latch over-voltage protection, and Constant-On-Time (COT) control. It delivers regulated output from 0.611V to 13V in a compact 3mm×4mm QFN-16 package, targeting high-density power rails in telecom base stations and server VRMs.
For engineers reviewing the MPQ8632HGLE-10-Z datasheet, MPQ8632HGLE-10-Z pinout, MPQ8632HGLE-10-Z application, or MPQ8632HGLE-10-Z equivalent, key selection criteria include its 19.6mΩ high-side RDS(ON), 5.7mΩ low-side RDS(ON), programmable 200kHz–1MHz switching frequency, 10A continuous output rating, and non-latch OVP mode-critical for fault-tolerant 12V intermediate bus conversion.
Technical Context
The MPQ8632HGLE-10-Z implements adaptive COT control without an external compensation network, using feed-forward line regulation via the FREQ pin to maintain stable switching frequency across input voltage variation. Its internal 4.8V VCC LDO powers gate drivers, while bootstrap circuitry enables high-side MOSFET operation with minimal external components.
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 >92% efficiency at 1A/1V out and >88% at 10A/1V out (VIN=12V). Thermal shutdown activates at 150°C with 25°C hysteresis, and soft-start is capacitor-programmable via the SS pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 10A continuous - supports single-rail CPU/GPU core power delivery in compact server modules |
| Input Voltage Range | 2.5V–18V - compatible with 3.3V, 5V, 12V, and 15V intermediate buses when externally biased |
| Switching Frequency | 200kHz–1MHz - adjustable via resistor on FREQ pin; higher frequencies reduce inductor size but increase switching loss |
| High-Side RDS(ON) | 19.6mΩ @ 25°C - minimizes conduction loss at 10A, enabling <1.2W total MOSFET loss at 12V→1V conversion |
| Low-Side RDS(ON) | 5.7mΩ @ 25°C - reduces synchronous rectification loss during off-time, improving light-load efficiency |
| OVP Mode | Non-latch - recovers automatically after overvoltage clears, avoiding system reset in transient fault conditions |
| Reference Voltage | 0.611V ±0.003V (0°C–70°C) - enables precise 1V or 0.85V core rail regulation with <±1% output tolerance |
Pinout & Package
MPQ8632HGLE-10-Z uses a thermally enhanced 3mm × 4mm QFN-16 package with exposed thermal pad (PGND-connected), optimized for high-current PCB layouts requiring minimal footprint and low thermal resistance (θJA = 46°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 EN | Enable control input | Digital logic-level input; pull-up to IN enables automatic startup; hysteresis of 250mV prevents chatter near threshold |
| 2 FREQ | Frequency programming node | Resistor-to-IN sets ON-time; feed-forward compensation maintains stable fSW across VIN variation |
| 3 FB | Feedback sensing input | Monitors output via resistor divider; also triggers non-latch OVP at 130% VREF |
| 4 SS | Soft-start timing node | Capacitor-to-GND programs controlled VOUT ramp rate; prevents inrush current into bulk capacitance |
| 5 AGND | Analog reference ground | Separate from PGND to isolate noise-sensitive control circuitry from high di/dt power paths |
| 6 PG | Open-drain power-good signal | Asserts high when VOUT ≥ 90% nominal; 2.5ms delay ensures stable regulation before system release |
| 7 VCC | Internal 4.8V LDO output | Powers gate drivers and bias circuits; can be disabled by applying 5V external bias to reduce quiescent current |
| 8 BST | Bootstrap supply node | Capacitor between BST and SW generates floating gate drive for high-side MOSFET; requires ceramic ≥0.1µF |
| 9,14 IN | Main power input | Accepts 2.5V–18V; dual-pin layout reduces IR drop and improves current sharing in high-current PCB traces |
| 10–13 PGND | Power ground return | Four dedicated pins minimize ground impedance; must connect directly to thermal pad and bulk capacitors |
| 15,16 SW | Switch node output | Drives external inductor; dual-pin configuration lowers parasitic inductance and EMI in high-di/dt switching path |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive COT control | Eliminates external loop compensation and provides <10µs load transient response for CPU/GPU dynamic current steps |
| Proprietary switching loss reduction | Optimizes dead-time and gate drive slew rates to reduce shoot-through and Miller-induced turn-on losses |
| Pre-bias start-up | Allows safe start into pre-charged output rails without reverse current flow or output collapse |
| Programmable soft-start time | Adjustable from 0.5ms to >10ms via SS capacitor; prevents overshoot and inrush into downstream point-of-load converters |
| Non-latch OCP/OVP/thermal shutdown | Self-recovering protection avoids system lockup during momentary overload, overvoltage, or thermal excursion |
Applications
| Telecom Base Station RF Power Amplifier Supply | Server CPU Core Voltage Regulator |
|---|---|
Use Scenario: Provides 0.85V/10A to GaN-based RF power amplifiers in 5G massive MIMO active antenna units. IC Role / Device Role / Timing Role: Primary buck regulator delivering tightly regulated core voltage with fast transient response to handle burst-mode RF envelope modulation. Use Value: 19.6mΩ/5.7mΩ MOSFET pair minimizes conduction loss at 10A, maintaining >90% efficiency at 48V→0.85V conversion with 1µH inductor. |
Use Scenario: Generates 1.0V/10A core rail for x86 server CPUs in 1U rack-mount systems with strict thermal and space constraints. IC Role / Device Role / Timing Role: High-current intermediate bus converter stepping 12V down to CPU core voltage; operates in CCM at full load and DCM at idle. Use Value: Non-latch OVP and thermal shutdown enable reliable operation during CPU turbo boost transients without requiring system-level intervention. |
| Industrial PLC I/O Module Power | Network Switch ASIC Core Supply |
Use Scenario: Powers isolated 3.3V/5V logic and analog front-end circuits in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Secondary buck stage converting 12V backplane supply to clean, low-noise 3.3V for ADCs, DACs, and communication interfaces. Use Value: 0.611V reference accuracy and 50nA feedback current ensure <±1% output regulation across -40°C to +85°C ambient, critical for precision sensor interfacing. |
Use Scenario: Supplies 0.8V/10A to multi-core network switch ASICs in enterprise layer-3 switches with dense port count. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator operating at 600kHz to balance EMI filtering requirements and inductor size. Use Value: Programmable soft-start via SS pin controls inrush into large ASIC decoupling banks, preventing brown-out on shared 12V backplane. |
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-Z | Latch-off OVP mode; identical 10A rating and 3mm×4mm QFN package | Preferred where system-level fault isolation requires latched shutdown after overvoltage event | Select when safety-critical systems mandate persistent fault indication until manual reset |
| MPQ8632GLE-12-Z | 12A rating; same pinout and footprint; higher current capability with 5.2mΩ low-side RDS(ON) | Suitable for future-proofed designs needing headroom beyond 10A or parallel operation | Choose if board layout allows margin for higher peak currents or long-term derating |
Compared with MPQ8632GLE-10-Z and MPQ8632GLE-12-Z, the MPQ8632HGLE-10-Z offers non-latch OVP for self-recovering behavior in transient overvoltage scenarios, while retaining identical thermal performance and PCB layout compatibility-making it optimal for telecom and server applications where uptime outweighs fault persistence.
Availability
MPQ8632HGLE-10-Z is available at Aetrix Electronics and suitable for telecom base stations, server CPU VRMs, and industrial PLC power modules requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for MPQ8632HGLE-10-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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MPQ8632 family targets high-current, high-efficiency DC/DC conversion in space-constrained infrastructure equipment, emphasizing integration, thermal robustness, and transient performance for 4A–20A applications.
FAQ
What is the maximum recommended input voltage for MPQ8632HGLE-10-Z?
The absolute maximum input voltage is 21V, but the recommended operating range is 4.5V to 18V with internal bias. With external 5V bias applied to VCC, the minimum input drops to 2.5V-enabling compatibility with 3.3V intermediate rails. Exceeding 18V risks violating SOA limits under transient conditions.
How does the non-latch OVP mode function in MPQ8632HGLE-10-Z?
When output voltage exceeds 130% of VREF (≈0.794V), the device disables switching and holds the output in regulation until VOUT falls below 116% VREF, then resumes normal operation automatically. This differs from latch-off variants that require EN toggling or power cycle to recover.
Can MPQ8632HGLE-10-Z operate with a 1µH inductor at 10A output?
Yes-typical application data shows stable CCM operation at 10A/1V with 1µH inductor and 500kHz switching frequency. Inductor saturation current must exceed 13A peak (10A + 30% ripple), and DC resistance should be ≤1.5mΩ to maintain >90% efficiency at full load.
What is the purpose of the AGND and PGND separation in the MPQ8632HGLE-10-Z layout?
AGND serves as the quiet reference for feedback, soft-start, and error amplifier circuits; PGND carries high di/dt return current from IN, SW, and PGND pins. Separating them prevents noise coupling into the feedback path, which could cause regulation instability or false power-good assertion.
Is the MPQ8632HGLE-10-Z RoHS-compliant and lead-free?
Yes-MPQ8632HGLE-10-Z is fully RoHS-compliant and lead-free per EU Directive 2011/65/EU. The QFN package uses matte tin finish, and all die attach, wire bond, and molding compounds meet JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) requirements.
How is switching frequency set, and what resistor value yields 600kHz?
Switching frequency is set by connecting a resistor (RFREQ) between FREQ and IN. For 600kHz at VIN=12V, use RFREQ = 249kΩ (standard 1% value), per the formula TON(ns) = 0.4 × VIN(V) / RFREQ(kΩ). Frequency remains stable within ±5% across VIN = 4.5V–18V due to feed-forward compensation.
Does MPQ8632HGLE-10-Z support pre-bias start-up, and how is it enabled?
Yes-pre-bias start-up is inherent and requires no configuration. When EN is asserted while VOUT is already charged, the device initiates soft-start without forcing reverse current through the output capacitor or causing output collapse, verified per Figure 16 in the datasheet.
MPQ8632HGLE-10-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:
- 10A
- 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)
MPQ8632HGLE-10-Z FAQ
1.How can I place an order for MPQ8632HGLE-10-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ8632HGLE-10-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 MPQ8632HGLE-10-Z reliable?
The price and inventory of MPQ8632HGLE-10-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ8632HGLE-10-Z is usually 5 days.
3.What payment methods are accepted for MPQ8632HGLE-10-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ8632HGLE-10-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ8632HGLE-10-Z?
MPQ8632HGLE-10-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ8632HGLE-10-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 MPQ8632HGLE-10-Z?
For technical support, including MPQ8632HGLE-10-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ8632HGLE-10-Z requirements.
6.How does Aetrix verify that MPQ8632HGLE-10-Z is sourced from the original manufacturer or authorized distributors?
All MPQ8632HGLE-10-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 MPQ8632HGLE-10-Z meets industry standards.
7.What is the process for return or replacement of MPQ8632HGLE-10-Z?
All MPQ8632HGLE-10-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ8632HGLE-10-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 MPQ8632HGLE-10-Z part is unused and in its original packaging.
Return procedure for MPQ8632HGLE-10-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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