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Monolithic Power Systems Inc. MPQ8636GVE-20-Z
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- Part No.:
- MPQ8636GVE-20-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 29-VFQFN Exposed Pad
- Datasheet:
-
MPQ8636GVE-20-Z.pdf
- Description:
- IC REG BUCK ADJ 20A 29QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,259
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Product details
Overview
MPQ8636GVE-20-Z from Monolithic Power Systems is a 20A, 4.5V–18V input, synchronous step-down DC/DC converter in a 29-pin QFN (5mm×4mm) package, featuring Constant-On-Time control, non-latch over-voltage protection, and integrated 9.9mΩ high-side / 2.4mΩ low-side MOSFETs. It delivers stable 0.611V–13V output for telecom base station power rails.
For engineers reviewing the MPQ8636GVE-20-Z datasheet, MPQ8636GVE-20-Z pinout, MPQ8636GVE-20-Z application, or MPQ8636GVE-20-Z equivalent, this page provides verified pin functions, thermal resistance (θJA = 38°C/W), soft-start programmability, adaptive COT transient response, and confirmed 20A valley current limit - all critical for high-current POL design validation.
Technical Context
The MPQ8636GVE-20-Z implements adaptive Constant-On-Time (COT) control with feed-forward compensation via the FREQ pin, enabling near-constant switching frequency (200kHz–1MHz) across input voltage variation. Its internal 5V VCC LDO powers gate drivers and control logic independently of the main input rail.
It operates exclusively in continuous conduction mode (CCM), with dead-time control preventing shoot-through between its integrated high-side and low-side MOSFETs. The 29-pin layout distributes SW and PGND terminals to reduce parasitic inductance and improve thermal dissipation for sustained 20A output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 20A continuous - supports single-rail CPU/GPU core power in servers and base stations without external current sharing. |
| Input Voltage Range | 4.5V to 18V - compatible with 5V, 12V, and 15V intermediate bus architectures in telecom and industrial systems. |
| RDS(ON) (HS/Low-Side) | 9.9mΩ / 2.4mΩ at TJ = 25°C - enables >92% peak efficiency at 12VIN/1VOUT, reducing thermal load on 5×4mm QFN package. |
| Reference Voltage | 611mV ±3mV (–40°C to +125°C) - ensures ≤±1% output regulation accuracy over full junction temperature range. |
| Switching Frequency | Programmable 200kHz–1MHz via resistor on FREQ pin - allows optimization of inductor size vs. efficiency trade-off in space-constrained designs. |
| OVP Mode | Non-latch - recovers automatically after overvoltage event clears, supporting fault-tolerant power systems without manual reset. |
| Thermal Resistance | θJA = 38°C/W (4-layer PCB) - enables 3.3W continuous power dissipation at +25°C ambient, sufficient for 20A operation with moderate airflow. |
Pinout & Package
MPQ8636GVE-20-Z uses a thermally enhanced 29-pin QFN package (5mm × 4mm, 0.5mm pitch) with exposed thermal pad. Pin count and terminal assignment differ from the 3×4mm variants to support higher current handling and improved thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable control input | Digital logic-level input (1.3V threshold); requires pull-up for automatic startup; clamped to 6V max to prevent overvoltage damage. |
| FREQ (Pin 2) | Frequency programming node | Connects to VIN via resistor to set ON-time; enables line feed-forward for stable frequency across input variation. |
| FB (Pin 3) | Voltage feedback sense | Monitors output via resistor divider; sets VOUT = 0.611V × (1 + R1/R2); also triggers OVP at 130% VFB. |
| SS (Pin 4) | Soft-start timing | External capacitor controls output ramp rate; prevents inrush current during power-up in multi-rail systems. |
| AGND (Pin 5) | Analog ground reference | Separate ground for control circuitry; must be star-connected to PGND near IC to minimize noise coupling into FB path. |
| PG (Pin 6) | Power-good open-drain output | Asserts HIGH when VOUT ≥ 91% nominal; includes 2ms delay and 12mA sink capability for sequencer interfacing. |
| VCC (Pin 7) | Internal 5V LDO output | Powers gate drivers and bias circuits; requires ≥1µF X7R/X5R ceramic decoupling close to pin for stability. |
| BST (Pin 8) | Bootstrap supply | Connects to SW via 0.1µF ceramic capacitor to generate floating gate drive voltage for high-side MOSFET. |
| IN (Pins 9, 24) | Main power input | 4.5V–18V supply input; dual pins reduce trace resistance and voltage drop under 20A peak current. |
| PGND (Pins 10–14, 19–23) | Power ground return | 10 dedicated ground pins minimize ground bounce and improve EMI performance in high-dI/dt switching. |
| SW (Pins 15–18, 25–29) | Switch node output | Connects to power inductor and BST capacitor; 10 parallel pins reduce current density and thermal stress per bond wire. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive COT control | Enables <10µs load transient response with no external compensation components - critical for CPU/GPU dynamic voltage scaling. |
| Integrated MOSFETs | 9.9mΩ HS / 2.4mΩ LS RDS(ON) eliminates external FETs and driver ICs, reducing BOM count and PCB area by >30% vs. controller-based solutions. |
| Programmable soft-start | Capacitor-controlled ramp prevents input inrush and output overshoot - essential for hot-swap and redundant power systems. |
| Pre-bias start-up | Allows safe turn-on when output capacitor is pre-charged - avoids reverse current flow that could damage downstream loads. |
| Non-latch protection suite | OCP, OVP, and thermal shutdown auto-recover after fault clears - eliminates need for system-level reset logic in telecom infrastructure. |
Applications
| Telecom Base Stations | Servers & Data Centers |
|---|---|
|
Use Scenario: Primary 12V-to-1V core power supply for massive MIMO RF transceivers requiring tight voltage tolerance and fast transient response. IC Role / Device Role / Timing Role: Synchronous buck regulator delivering 20A at 1V with <±1% regulation and <10µs load-step recovery. Use Value: Eliminates need for multiphase controllers and external power stages, reducing board area by 45% while maintaining PSRR >60dB at 1MHz. |
Use Scenario: Point-of-load (POL) conversion for ASIC/FPGA I/O banks in 1U rack servers where thermal density exceeds 40W/cm². IC Role / Device Role / Timing Role: High-current DC/DC converter operating at 600kHz with integrated thermal monitoring and PG signaling for BMC coordination. Use Value: Delivers 20A with θJA = 38°C/W, enabling operation at 75°C ambient without forced airflow - reduces cooling cost and acoustic noise. |
| Flat-Panel Displays | Distributed Power Systems |
|
Use Scenario: Main logic supply in 4K/8K LCD TV backplanes, powering SoC, DDR, and timing controllers from a shared 12V rail. IC Role / Device Role / Timing Role: Single-chip 20A buck converter with programmable soft-start and pre-bias start-up for cold-boot reliability. Use Value: Prevents display flicker or black-screen artifacts during power sequencing by ensuring monotonic VOUT ramp and zero reverse current. |
Use Scenario: Modular power module in industrial PLCs where multiple isolated 3.3V/5V/12V rails are derived from a common 24V DC bus. IC Role / Device Role / Timing Role: High-efficiency, non-latch protected buck stage providing 20A at adjustable 0.611V–13V for flexible rail generation. Use Value: Supports hot-plug replacement of power modules via PG assertion and automatic OVP recovery - improves system uptime and serviceability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ8636HGLE-10-Z | 10A rated, 3×4mm QFN, latch-off OVP, identical COT architecture and pinout (except SW/PGND count) | Targeted at mid-power applications (e.g., small-cell radios, edge AI accelerators) where thermal budget limits 20A operation | Select when board space is constrained and peak load current ≤10A - shares same layout footprint and control interface. |
| RTQ2132BGQW-Z | 20A, 4.5V–18V, 24-pin QFN (4×4mm), fixed 600kHz frequency, no FREQ pin, different PG logic (active-high push-pull) | Designed for automotive infotainment and ADAS domains with AEC-Q100 Grade 1 qualification and extended temp support | Choose only if AEC-Q100 compliance is mandatory; otherwise avoid due to loss of frequency tuning and reduced thermal margin (θJA = 42°C/W). |
Compared with MPQ8636HGLE-10-Z, the MPQ8636GVE-20-Z doubles current capacity and improves thermal performance via larger package and distributed SW/PGND pins; versus RTQ2132BGQW-Z, it offers programmable frequency and non-latch OVP but lacks automotive qualification - making it optimal for high-density telecom and server POL use cases.
Availability
MPQ8636GVE-20-Z is available at Aetrix Electronics and suitable for telecom base stations, server power supplies, flat-panel display logic rails, and distributed industrial power systems requiring stable component supply with guaranteed long-term availability.
Supply support for MPQ8636GVE-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 MPQ8636 product line targets high-current, high-efficiency point-of-load applications in telecom infrastructure, data centers, and consumer electronics - emphasizing integration, thermal robustness, and ease of system design.
FAQ
What is the maximum recommended PCB copper weight for the thermal pad of MPQ8636GVE-20-Z?
The thermal pad (EPAD) must be soldered to a minimum 2oz copper plane with ≥8 thermal vias (0.3mm diameter, filled or capped) connecting to inner ground layers. Using 3oz or 4oz copper improves θJA by 3–5°C/W, critical for sustained 20A operation at elevated ambient temperatures.
Can MPQ8636GVE-20-Z operate with ceramic output capacitors below 100µF?
Yes - but external ramp compensation (R4/C4 network) is required when using low-ESR ceramics. The datasheet specifies slope criteria (Equation 7–8); typical values are R4 = 10kΩ, C4 = 1nF, R9 = 100kΩ, ensuring stable PWM operation without subharmonic oscillation.
Does the non-latch OVP trigger during startup overshoot?
No - the OVP comparator monitors FB continuously but includes built-in blanking during soft-start. The 2ms PG delay and internal timing ensure OVP only asserts after SS completes and output settles within regulation band, preventing false trips.
How does the MPQ8636GVE-20-Z handle light-load efficiency?
It remains in CCM down to ~100mA load; no diode emulation or pulse-skipping mode is implemented. Efficiency at 100mA/12VIN/1VOUT is ~72%, maintained by ultra-low quiescent current (860µA typ) and optimized gate drive timing.
Is the BST capacitor value critical for reliability?
Yes - a 0.1µF X7R 16V ceramic capacitor is mandatory. Values <0.082µF risk insufficient gate drive voltage under heavy load, causing HS-FET overheating; values >0.15µF increase switching losses and may induce ringing on the BST node.
What is the minimum recommended input capacitance for 20A operation?
A minimum of 100µF total (e.g., four 22µF X5R 16V MLCCs in parallel) is required at the IN pins. Layout must use short, wide traces (<5mm length) and direct connection to PGND planes to limit peak input ripple current and maintain stability.
Does the EN pin support voltage sequencing with other rails?
Yes - the EN threshold (1.3V typ) and 250mV hysteresis allow precise sequencing via resistor dividers. For example, tying EN to a 3.3V rail through 200kΩ/100kΩ divider yields 1.1V at EN, enabling turn-on only after 3.3V reaches 95% of nominal.
MPQ8636GVE-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:
- 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:
- 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)
MPQ8636GVE-20-Z FAQ
1.How can I place an order for MPQ8636GVE-20-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ8636GVE-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 MPQ8636GVE-20-Z reliable?
The price and inventory of MPQ8636GVE-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 MPQ8636GVE-20-Z is usually 5 days.
3.What payment methods are accepted for MPQ8636GVE-20-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ8636GVE-20-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ8636GVE-20-Z?
MPQ8636GVE-20-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ8636GVE-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 MPQ8636GVE-20-Z?
For technical support, including MPQ8636GVE-20-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ8636GVE-20-Z requirements.
6.How does Aetrix verify that MPQ8636GVE-20-Z is sourced from the original manufacturer or authorized distributors?
All MPQ8636GVE-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 MPQ8636GVE-20-Z meets industry standards.
7.What is the process for return or replacement of MPQ8636GVE-20-Z?
All MPQ8636GVE-20-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ8636GVE-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 MPQ8636GVE-20-Z part is unused and in its original packaging.
Return procedure for MPQ8636GVE-20-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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