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Monolithic Power Systems Inc. MPQ4572GQB-AEC1-Z
- Part No.:
- MPQ4572GQB-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 12-VFQFN
- Datasheet:
-
MPQ4572GQB-AEC1-Z.pdf
- Description:
- IC REG BUCK ADJ 2A 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:10,770
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Product details
Overview
MPQ4572GQB-AEC1-Z from Monolithic Power Systems is a fully integrated, AEC-Q100 Grade-1 qualified synchronous buck converter delivering up to 2A continuous output current with 4.5V–60V input range, 250mΩ/45mΩ internal MOSFETs, and 40μA quiescent current. It serves as a primary DC-DC power stage in automotive infotainment and LED lamp systems requiring cold-crank operation and high efficiency across wide load conditions.
For engineers reviewing the MPQ4572GQB-AEC1-Z datasheet, MPQ4572GQB-AEC1-Z pinout, MPQ4572GQB-AEC1-Z application, or MPQ4572GQB-AEC1-Z equivalent, key selection considerations include its AAM/CCM light-load mode control, 180° out-of-phase SYNC output for multi-rail synchronization, valley-current OCP architecture, and wettable flank QFN-12 package for automated optical inspection.
Technical Context
The MPQ4572 employs peak-current-mode control with valley-current over-current protection and zero-cross detection (ZCD) for precise current limiting and hiccup-mode short-circuit recovery. Its internal 0.45ms soft-start, 0.8V ±1% FB reference, and programmable switching frequency (300kHz–2.2MHz via external resistor) enable stable startup and EMI optimization in space-constrained automotive PCBs.
It integrates a bootstrap regulator for high-side gate drive, supports remote EN control with 1.45V typical threshold, and provides PG indication with 90–108% VREF window and 70μs rise/fall delay. Low-dropout mode maintains regulation down to VIN = VOUT + 0.5V during automotive cold-crank events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 60V - supports full automotive battery range including 12V/24V systems and load-dump transients. |
| Output Current | 2A continuous - sufficient for powering microcontrollers, sensors, and display backlights in automotive modules. |
| Switching Frequency | 300kHz to 2.2MHz - configurable via FREQ pin resistor; enables compact magnetics and CISPR25 Class 5 EMI compliance. |
| Quiescent Current | 40μA typical - ensures minimal battery drain in always-on vehicle subsystems like telematics or alarm controllers. |
| FB Reference Voltage | 0.800V ±1% at 25°C - enables accurate output voltage setting (e.g., 3.3V or 5V) with standard resistor dividers. |
| Thermal Shutdown | 170°C with 25°C hysteresis - protects against sustained overload or poor heatsinking in enclosed junction boxes. |
| Package | QFN-12 (2.5mm × 3mm) with wettable flanks - supports automated optical solder-joint inspection in automotive production lines. |
Pinout & Package
MPQ4572GQB-AEC1-Z is housed in a thermally enhanced QFN-12 (2.5mm × 3mm) package with exposed thermal pad and wettable flank leads for reliable reflow and AOI compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 BST | Bootstrap supply | Connects external capacitor between BST and SW to generate floating gate-drive voltage for high-side MOSFET. |
| 2 SW | Switch node | High-current output node connecting internal HS/LS switches; requires wide PCB trace and low-inductance layout. |
| 3 PG | Power good indicator | Open-drain output pulled low if VOUT falls below 84% or exceeds 116% of nominal; requires external pull-up. |
| 4 FB | Feedback input | Negative input of error amplifier; connects to resistor divider to set output voltage and monitor regulation. |
| 5 FREQ | Frequency programming | Resistor-to-GND sets switching frequency (e.g., 76.8kΩ → 400kHz); enables EMI tuning and size optimization. |
| 6 VCC | Bias supply | Internal LDO output; requires ≥1µF ceramic decoupling capacitor placed adjacent to pin for stability. |
| 7 GND | Ground reference | Primary IC ground; must connect to large copper pour tied to input/output capacitor negatives for low-noise operation. |
| 8 IN | Main input supply | High-voltage input path; needs local ceramic decoupling (≥10µF) near pin to suppress switching transients. |
| 9,10 NC | No connection | Internally unconnected; may be tied to GND to improve thermal dissipation and reduce EMI radiation. |
| 11 CCM/SYNCO | Mode select / sync output | Pull to GND for forced CCM; float for AAM; outputs 180° out-of-phase clock for synchronizing multiple converters. |
| 12 EN | Enable control | Active-high logic input (1.45V typ. threshold); floating or low disables device and reduces shutdown current to 2μA. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated HS/LS MOSFETs | 250mΩ high-side and 45mΩ low-side RDS(on) - eliminates external Schottky diode and reduces BOM count and footprint. |
| Advanced Asynchronous Modulation (AAM) | Light-load frequency scaling - reduces switching losses below ~100mA, achieving >85% efficiency at 1mA output. |
| Automotive-grade protection suite | OCP (valley-current), hiccup SCP, UVLO (4.0V rising), thermal shutdown (170°C), and PG monitoring - meets ASIL-B system-level requirements. |
| Low-dropout mode | Maintains regulation when VIN drops to VOUT + 0.5V - sustains operation during 4V cold-crank events without brownout. |
| Wettable flank QFN-12 | Side-wettable leads - enables automated X-ray and optical inspection of solder joints per IPC-A-610 Class 3 standards. |
Applications
| Automotive Infotainment | Automotive LED Lamps |
|---|---|
|
Use Scenario: Powering head-unit SoCs, audio DSPs, and touch-display controllers in vehicles with 12V/24V battery inputs. IC Role / Device Role / Timing Role: Primary 5V/3.3V step-down regulator with fast transient response to handle burst-mode CPU loads. Use Value: 2A capability and 40μA IQ support always-on functionality while meeting CISPR25 Class 5 conducted/radiated EMI limits. |
Use Scenario: Driving interior ambient lighting, dashboard backlighting, and exterior position lamps with PWM dimming. IC Role / Device Role / Timing Role: Constant-voltage source feeding LED driver ICs or directly biasing strings via current-sense resistors. Use Value: Wide 4.5–60V input accommodates battery fluctuations and load dumps; low dropout ensures lamp operation during cranking. |
| Automotive Motor Control | Industrial Power Systems |
|
Use Scenario: Supplying gate drivers, position sensors, and MCU peripherals in BLDC fan or pump modules. IC Role / Device Role / Timing Role: Secondary rail generator isolated from noisy motor power paths using separate input filtering. Use Value: Valley-current OCP prevents MOSFET runaway during stall conditions; PG signal enables safe motor shutdown on undervoltage. |
Use Scenario: Providing regulated 5V/12V rails in industrial HMIs, PLC I/O modules, and railway signaling equipment. IC Role / Device Role / Timing Role: Robust front-end DC-DC converter tolerant of 60V surges and extended temperature (-40°C to +125°C). Use Value: AEC-Q100 qualification ensures reliability in harsh environments; wettable flanks guarantee solder joint integrity in long-life deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4570GQB-AEC1-Z | 1A output current, identical 4.5–60V input and pinout; lower RDS(on) (200mΩ/35mΩ) but reduced thermal margin. | Suitable for lower-power infotainment accessories or sensor nodes where 2A headroom is unnecessary. | Select when board space and cost are constrained and peak load remains ≤1A; verify thermal performance under worst-case ambient. |
| TPS54360BQPWPRQ1 | 3.5A output, 3.5–60V input, external compensation; no integrated AAM mode or SYNC output; larger SOIC-8 package. | Preferred for higher-current motor drivers or designs requiring custom loop shaping and external current sensing. | Choose when design requires >2A output or programmable slope compensation; accept larger footprint and added external components. |
Compared with MPQ4572GQB-AEC1-Z, MPQ4570GQB-AEC1-Z trades current capacity for smaller solution size, while TPS54360BQPWPRQ1 offers higher current and flexibility at the cost of integration and EMI-optimized features like AAM and SYNC.
Availability
MPQ4572GQB-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment, LED lighting, motor control, and industrial power systems requiring stable component supply with AEC-Q100 qualification and long-term manufacturability.
Supply support for MPQ4572GQB-AEC1-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 power management ICs for automotive, industrial, and consumer markets.
The MPQ4572 belongs to MPS's AEC-Q100-qualified automotive DC-DC converter product line, designed specifically for robust, compact, and EMI-compliant power conversion in safety-critical vehicle subsystems.
FAQ
What is the minimum input voltage required for startup?
The MPQ4572GQB-AEC1-Z starts switching when VIN rises above 4.0V (typical UVLO rising threshold). It maintains regulation down to VIN = VOUT + 0.5V in low-dropout mode, enabling operation during 4V cold-crank events common in 12V automotive systems.
How does the CCM/SYNCO pin function in synchronization mode?
When configured as a sync output (pin floating), CCM/SYNCO delivers a 180° out-of-phase clock signal referenced to the internal oscillator. This allows precise interleaving of multiple MPQ4572 devices to reduce input ripple and EMI without external timing circuitry.
Can the MPQ4572GQB-AEC1-Z operate without an external bootstrap capacitor?
No. A ceramic capacitor (typically 0.1µF) must be placed between BST and SW pins to provide gate-drive voltage for the high-side MOSFET. Omitting it causes immediate failure of the HS switch and loss of regulation.
What is the purpose of the NC pins (9 and 10)?
Pins 9 and 10 are internally unconnected. They may be tied to GND on the PCB to enhance thermal conduction from the die to the ground plane and reduce radiated EMI-no electrical function is affected.
Does the PG pin require an external pull-up resistor?
Yes. PG is an open-drain output and must be pulled up to a valid logic voltage (e.g., VOUT or VCC) via a resistor (typically 10kΩ) to assert the power-good signal. Without pull-up, PG remains floating and cannot indicate regulation status.
How is light-load efficiency optimized in this device?
Through Advanced Asynchronous Modulation (AAM), which dynamically scales switching frequency downward under light loads. This reduces both switching and gate-driver losses, maintaining >85% efficiency even at 1mA output current.
Is the wettable flank feature mandatory for automotive assembly?
Not mandatory, but strongly recommended. Wettable flanks enable automated optical inspection (AOI) of solder joints per IPC-A-610 Class 3, improving process yield and field reliability in automotive production-especially critical for AEC-Q100 Grade-1 parts.
MPQ4572GQB-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MPQ
- Package/Case:
- 12-VFQFN
- 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):
- 60V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 54V
- Current - Output:
- 2A
- Frequency - Switching:
- 400kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-QFN (2.5x3)
MPQ4572GQB-AEC1-Z FAQ
1.How can I place an order for MPQ4572GQB-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4572GQB-AEC1-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 MPQ4572GQB-AEC1-Z reliable?
The price and inventory of MPQ4572GQB-AEC1-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ4572GQB-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ4572GQB-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4572GQB-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4572GQB-AEC1-Z?
MPQ4572GQB-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4572GQB-AEC1-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 MPQ4572GQB-AEC1-Z?
For technical support, including MPQ4572GQB-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4572GQB-AEC1-Z requirements.
6.How does Aetrix verify that MPQ4572GQB-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4572GQB-AEC1-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 MPQ4572GQB-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ4572GQB-AEC1-Z?
All MPQ4572GQB-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4572GQB-AEC1-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 MPQ4572GQB-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ4572GQB-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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