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Monolithic Power Systems Inc. MPQ4432GL-P
- Part No.:
- MPQ4432GL-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 16-PowerVQFN
- Datasheet:
-
MPQ4432GL-P.pdf
- Description:
- IC REG BCK 3.3/3.8/5V 2.2A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
MPQ4432GL-P from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, synchronous step-down DC/DC converter with integrated 90mΩ high-side and 40mΩ low-side MOSFETs, delivering up to 2.2A output current across a 3.3V–36V input range. It features programmable switching frequency (350kHz–2.5MHz), 10μA sleep-mode quiescent current, and advanced asynchronous mode (AAM) for automotive battery-powered systems requiring cold-crank support and CISPR 25 Class 5 EMI compliance.
For engineers reviewing the MPQ4432GL-P datasheet, MPQ4432GL-P pinout, MPQ4432GL-P application, or MPQ4432GL-P equivalent, key selection criteria include its AEC-Q100 qualification, QFN-16 wettable flank package, valley-current OCP with hiccup protection, low-dropout mode, and external clock synchronization capability with selectable in-phase/180° out-of-phase operation.
Technical Context
The MPQ4432GL-P employs current-mode PWM control with valley-current over-current protection and thermal shutdown at 170°C. Its internal error amplifier compares FB voltage against a precision 800mV reference and drives a COMP node to regulate peak inductor current per cycle.
It supports dual operating modes: forced continuous conduction mode (CCM) via SYNC high, and advanced asynchronous mode (AAM) via SYNC low/floating - enabling dynamic frequency scaling down to ~10kHz at light load to minimize gate-driving and switching losses while maintaining 10μA IQ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3V to 36V - supports full automotive battery range including cold-crank (down to 3.3V) and load-dump transients. |
| Output Current | 2.2A continuous - sustained delivery under thermal limits with θJA = 43°C/W on EV4432-L-00A PCB. |
| Quiescent Current | 10μA in sleep mode - enables >1-year battery standby in always-on automotive modules. |
| Switching Frequency | 350kHz to 2.5MHz - programmable via FREQ resistor or external SYNC clock with phase-selectable alignment. |
| Feedback Reference | 800mV ±2% - enables precise output regulation; fixed versions offer 3.3V/3.8V/5V with ±2.5% accuracy. |
| OCP Method | Valley-current detection with hiccup mode - prevents inductor saturation during overload and limits average fault current. |
| Package | QFN-16 (3mm × 4mm) with wettable flanks - supports automated optical inspection (AOI) and improves solder joint reliability in automotive reflow. |
Pinout & Package
MPQ4432GL-P is housed in a thermally enhanced, lead-free, RoHS-compliant QFN-16 (3mm × 4mm) package with exposed thermal pad and wettable flank terminals for enhanced solderability and AOI compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PHASE | Synchronization phase select | Drives high for in-phase sync; low for 180° out-of-phase; tie to GND if unused to prevent noise coupling. |
| 2 VIN | Main power input | Supplies internal control circuitry and high-side switch; requires local 10µF ceramic decoupling to PGND. |
| 3,10 SW | Switch node | Connects internally to both pins; carries high di/dt; must be routed with minimal loop area to reduce EMI. |
| 4,9 PGND | Power ground return | Low-impedance path for high-side/low-side MOSFET currents; requires solid copper pour and multiple vias to thermal pad. |
| 5 EN | Enable control | Digital logic input; active-high with 1.05V threshold; must not float - use pull-up/down resistor for defined state. |
| 6 SYNC | Frequency sync & mode select | Accepts 350kHz–2.5MHz external clock; also selects CCM (high) or AAM (low/floating) at startup. |
| 7 PG | Open-drain power-good flag | Asserts high when VOUT is within ±10% of nominal; includes 30µs rise and 50µs fall deglitch timing. |
| 8 BIAS | External bias supply input | Accepts 5V–18V external source to power internal regulator, reducing dissipation and improving efficiency. |
| 11 BST | Bootstrap supply | Provides gate drive voltage for high-side MOSFET; requires 0.1µF ceramic capacitor between BST and SW. |
| 12 VCC | Internal bias rail | 5V regulated output powering control logic; requires ≥1µF ceramic decoupling to AGND. |
| 13 AGND | Analog ground reference | Separate ground for feedback, error amp, and soft-start; must be star-connected to PGND at single point. |
| 14 SS | Soft-start timing | Current-source (10µA) input; external capacitor sets ramp time; floating enables 0.7ms internal default. |
| 15 FB | Feedback input | Compares output voltage against 800mV reference; for fixed versions, connect directly to VOUT. |
| 16 FREQ | Frequency programming | Resistor-to-GND sets oscillator frequency; 180kΩ = ~475kHz, 82kΩ = ~1MHz, 27kΩ = ~2.5MHz. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Rated for -40°C to +125°C junction temperature with full automotive reliability testing and traceable lot control. |
| Advanced Asynchronous Mode (AAM) | Reduces switching frequency dynamically at light load to maintain >85% efficiency at 1mA output while drawing only 10μA IQ. |
| Low-dropout mode | Enables regulation down to VIN – VOUT ≈ 0.8V during cold-crank, sustaining 5V output even at VIN = 5.8V. |
| Wettable flank QFN-16 | Facilitates automated optical inspection of solder joints and improves mechanical reliability under thermal cycling stress. |
| CISPR 25 Class 5 EMI compliance | Validated with standard EMI filters; meets peak/average conducted and radiated emission limits up to 1GHz in horizontal/vertical polarization. |
Applications
| Automotive Infotainment Power | ADAS Camera Module Supply |
|---|---|
Use Scenario: Powers SoC, DDR memory, and display interface in head-unit systems with wide input variation (6V–16V) and strict EMI requirements. IC Role / Device Role / Timing Role: Primary 5V/3.3V buck converter with SYNC-synchronized switching to avoid beat frequencies with display pixel clocks. Use Value: AAM mode maintains <15mW no-load power loss; wettable flanks ensure solder joint integrity over 2000 thermal cycles. | Use Scenario: Supplies image sensor and ISP in rear-view or surround-view cameras exposed to engine bay temperatures and vibration. IC Role / Device Role / Timing Role: High-reliability 3.3V regulator with thermal shutdown (170°C) and valley-current OCP to survive short-circuited flex cable faults. Use Value: Low dropout mode sustains 3.3V output during 4.5V cold-crank; AEC-Q100 qualification ensures zero infant mortality in field deployment. |
| Telematics Control Unit (TCU) | Automotive Body Control Module (BCM) |
Use Scenario: Powers LTE modem, GNSS receiver, and microcontroller in always-on cellular gateway with battery backup. IC Role / Device Role / Timing Role: Ultra-low-IQ buck converter enabling >3-year battery life in sleep mode; PG signal triggers wake-up interrupt on host MCU. Use Value: 10μA sleep current reduces annual self-discharge to <10mAh; programmable soft-start prevents brown-out during modem burst transmission. | Use Scenario: Regulates power for door lock actuators, window motors, and LED lighting drivers in centralized body electronics. IC Role / Device Role / Timing Role: Robust 2.2A supply with hiccup-mode OCP and thermal shutdown protecting against motor stall and wiring shorts. Use Value: Integrated 90mΩ/40mΩ MOSFETs eliminate external FETs and sense resistors; low-side RDS(on) minimizes conduction loss during PWM dimming. |
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 |
|---|---|---|---|
| MPQ4433GL-AEC1 | Higher 3A output current; identical pinout and feature set; shares same die but rated for 3A continuous. | Better suited for higher-power ADAS ECUs or radar modules requiring >2.2A sustained load. | Select MPQ4433GL-AEC1 when margin beyond 2.2A is required without layout change. |
| TPS54332QPWPRQ1 | Lower 3.5A rating; uses external compensation; no AAM mode; 1.5µA shutdown current but 25µA light-load IQ. | Lacks frequency synchronization and wettable flanks; less optimized for ultra-low-IQ battery hold-up. | Choose TPS54332QPWPRQ1 only if TI ecosystem integration or external loop tuning is mandatory. |
Compared with MPQ4432GL-P, MPQ4433GL-AEC1 offers headroom for future power scaling while retaining footprint and software compatibility, whereas TPS54332QPWPRQ1 trades EMI performance and light-load efficiency for TI-specific design toolchain support.
Availability
MPQ4432GL-P is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and telematics control units requiring stable component supply with AEC-Q100 traceability and long-term production continuity.
Supply support for MPQ4432GL-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 power ICs, with core expertise in DC/DC conversion, motor drivers, and LED lighting controllers.
The MPQ4432 belongs to MPS's automotive-grade buck converter product line, designed specifically for harsh-environment vehicle subsystems demanding AEC-Q100 qualification, low EMI, and extended temperature operation.
FAQ
What is the minimum input voltage supported by MPQ4432GL-P during cold-crank conditions?
The MPQ4432GL-P supports input voltages as low as 3.3V, enabled by its low-dropout mode. This allows stable 5V or 3.3V output regulation even when battery voltage dips to 3.3V during engine cranking - verified per ISO 16750-2 pulse 4 test profiles.
Does MPQ4432GL-P require an external bootstrap capacitor, and what value is recommended?
Yes - a 0.1µF X7R ceramic capacitor must be placed between BST and SW pins. This capacitor supplies gate-drive energy for the high-side MOSFET during each switching cycle and must be located within 2mm of the BST/SW pins to minimize parasitic inductance and prevent shoot-through.
How does the MPQ4432GL-P achieve CISPR 25 Class 5 EMI compliance?
MPQ4432GL-P achieves CISPR 25 Class 5 compliance through integrated frequency dithering, optimized gate drive slew rates, and a robust internal architecture that minimizes high-frequency harmonics. Validation was performed using the reference EV4432-L-00A board with specified EMI filters, meeting both conducted and radiated limits up to 1GHz.
Can the MPQ4432GL-P operate without connecting the BIAS pin?
Yes - the BIAS pin may be left floating or tied to AGND if not used. In that case, the internal 5V regulator derives power from VIN. However, connecting BIAS to a clean 5V–18V external source (e.g., VOUT) reduces power dissipation by ~150mW at full load and improves overall efficiency by bypassing VIN-to-VCC regulation losses.
What is the purpose of the PHASE pin, and how should it be configured for multi-phase synchronization?
The PHASE pin selects whether the internal oscillator synchronizes in-phase or 180° out-of-phase with the external SYNC clock. Drive PHASE high for in-phase alignment; low for 180° offset. For multi-phase interleaving, tie PHASE pins of parallel MPQ4432GL-P devices to opposite logic levels to achieve natural 180° phase shift and reduce input/output ripple.
Is the MPQ4432GL-P pin-compatible with other members of the MPQ443x family?
Yes - MPQ4432GL-P shares identical QFN-16 (3mm×4mm) pinout and footprint with MPQ4433GL-AEC1 and MPQ4435GL-AEC1. All variants support the same control interface, protection features, and thermal pad layout, enabling drop-in current-rating upgrades without PCB redesign.
How is soft-start time programmed, and what is the default duration if SS is left unconnected?
Soft-start time is set by an external capacitor from SS to AGND, charged by a 10µA internal current source. Time = (CSS × 0.8V) / 10µA. If SS is left floating, the internal 0.7ms soft-start timer activates, limiting inrush current during power-up without requiring external components.
MPQ4432GL-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 16-PowerVQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.3V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 3.3V, 3.8V, 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 2.2A
- Frequency - Switching:
- 350kHz ~ 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x4)
MPQ4432GL-P FAQ
1.How can I place an order for MPQ4432GL-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4432GL-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 MPQ4432GL-P reliable?
The price and inventory of MPQ4432GL-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ4432GL-P is usually 5 days.
3.What payment methods are accepted for MPQ4432GL-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4432GL-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4432GL-P?
MPQ4432GL-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4432GL-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 MPQ4432GL-P?
For technical support, including MPQ4432GL-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4432GL-P requirements.
6.How does Aetrix verify that MPQ4432GL-P is sourced from the original manufacturer or authorized distributors?
All MPQ4432GL-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 MPQ4432GL-P meets industry standards.
7.What is the process for return or replacement of MPQ4432GL-P?
All MPQ4432GL-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4432GL-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 MPQ4432GL-P part is unused and in its original packaging.
Return procedure for MPQ4432GL-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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