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Monolithic Power Systems Inc. MPQ4572GQB-Z
- Part No.:
- MPQ4572GQB-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 12-VFQFN
- Datasheet:
-
MPQ4572GQB-Z.pdf
- Description:
- IC REG BUCK ADJ 2A 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:9,133
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Product details
Overview
MPQ4572GQB-Z from Monolithic Power Systems is a fully integrated, AEC-Q100 Grade-1 qualified synchronous buck converter delivering 2A continuous output current with 4.5V–60V input range, 0.8V reference accuracy (±1% at 25°C), and 2μA shutdown quiescent current - designed for automotive infotainment, LED lamps, and motor control power rails.
For engineers reviewing the MPQ4572GQB-Z datasheet, MPQ4572GQB-Z pinout, MPQ4572GQB-Z application, or MPQ4572GQB-Z equivalent, key selection criteria include cold-crank low-dropout mode, valley-current OCP with hiccup SCP, configurable 300–2200kHz switching frequency via external resistor, and QFN-12 (2.5mm×3mm) wettable flank package compatibility with automotive thermal and EMI requirements.
Technical Context
The MPQ4572GQB-Z employs peak-current-mode control with valley-current detection for over-current protection and integrates high-side (250mΩ typ.) and low-side (45mΩ typ.) MOSFETs. Its advanced asynchronous modulation (AAM) dynamically scales switching frequency under light load to minimize gate and switching losses.
It supports remote enable control, power-good indication with ±12% window (90–108% VFB), and 180° out-of-phase SYNC clock output for multi-phase synchronization. Internal compensation eliminates external loop components, while low-dropout mode maintains regulation during automotive cold-crank (VIN down to 4.5V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 60V - supports full automotive battery range including cold-crank (4.5V) and load-dump (60V) transients. |
| Continuous Output Current | 2A - sufficient for powering infotainment SoCs, LED drivers, and small BLDC gate drivers without external heatsinking. |
| Reference Voltage Accuracy | ±1% at 25°C, ±2% over –40°C to +125°C - enables precise 5V/3.3V rail regulation with minimal FB divider error. |
| Quiescent Current | 40μA in active AAM mode, 2μA in shutdown - extends battery life in always-on automotive modules. |
| Switching Frequency Range | 300kHz to 2.2MHz - selectable via external resistor on FREQ pin; higher frequencies allow smaller inductors (e.g., 4.7μH @ 2.2MHz). |
| Protection Features | OCP (valley-current detection), hiccup-mode SCP, UVLO (4.0V rising threshold), thermal shutdown (170°C), and PG fault reporting - ensures robust operation in harsh environments. |
| Package | QFN-12 (2.5mm × 3mm) with wettable flanks - enables automated optical inspection (AOI) and improves solder joint reliability in automotive reflow profiles. |
Pinout & Package
MPQ4572GQB-Z is housed in a thermally enhanced QFN-12 (2.5mm × 3mm) package with exposed thermal pad. Pin 1 is marked by a dot; pins 9 and 10 are no-connect (NC) but may be tied to GND for improved thermal/EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 BST | Bootstrap supply | Connects external capacitor between BST and SW to bias high-side driver; critical for proper HS-FET turn-on above 5V VIN. |
| 2 SW | Switch node | Drives external inductor; requires wide PCB trace and tight layout to minimize ringing and EMI. |
| 3 PG | Power good open-drain output | Pulled low if VOUT falls below 84% or exceeds 116% of target; requires external pull-up to monitored rail. |
| 4 FB | Feedback input | Negative input of error amplifier; connects to resistor divider to set output voltage; also used by PG and UVLO circuits. |
| 5 FREQ | Frequency setting | Resistor-to-GND sets fSW: 76.8kΩ → 400kHz, 28kΩ → 1MHz, 12.1kΩ → 2.2MHz. |
| 6 VCC | Internal bias supply | Must be decoupled with ≥1µF ceramic capacitor close to pin; powers internal logic and gate drivers. |
| 7 GND | Ground reference | Primary IC ground; connect to large copper pour shared with input/output capacitors' negative terminals. |
| 8 IN | Main power input | Supplies all converter power; place ≥10µF ceramic capacitor as close as possible to reduce switching noise. |
| 11 CCM/SYNCO | Mode select / sync output | Ground via 10–300kΩ for forced CCM; float for AAM; outputs 180° out-of-phase clock for synchronizing adjacent converters. |
| 12 EN | Enable control | Logic-high (>1.45V) enables device; floating or low disables with 2μA shutdown current. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 250mΩ/45mΩ MOSFETs | Eliminates need for external Schottky diode or discrete switches, reducing BOM count and PCB area by >30% vs. controller-based solutions. |
| AAM light-load efficiency mode | Reduces switching frequency under light load to cut gate drive and core losses - achieves >85% efficiency at 1mA output current. |
| Low-dropout mode | Maintains regulation down to VIN = VOUT + 0.5V during cold-crank, enabling stable 5V output even when battery drops to 4.5V. |
| Valley-current OCP with hiccup SCP | Detects overcurrent at switch valley to prevent runaway; enters timed hiccup (off-time ~10ms) during short circuit to limit power dissipation and temperature rise. |
| Internal soft-start (0.45ms) | Prevents inrush current and output overshoot during startup; eliminates need for external soft-start capacitor or sequencing circuitry. |
Applications
| Automotive Infotainment | Automotive LED Lamps |
|---|---|
|
Use Scenario: Powering head-unit SoCs, display controllers, and audio amplifiers in vehicles with wide battery voltage swings (6V–16V nominal, up to 60V during load dump). IC Role / Device Role / Timing Role: Primary 5V/3.3V point-of-load regulator with cold-crank support and low-noise AAM operation during standby. Use Value: Maintains system uptime during engine start (VIN ≥4.5V) and survives 60V transients without external TVS, reducing system-level protection cost. |
Use Scenario: Driving interior ambient lighting, dashboard backlighting, and exterior DRL/position lamps requiring constant-current or regulated voltage rails. IC Role / Device Role / Timing Role: High-efficiency step-down converter supplying 12V→5V or 24V→12V intermediate rails for LED driver ICs. Use Value: 2μA shutdown current enables always-on lamp control without draining battery; wettable flank QFN ensures long-term solder joint integrity in vibration-prone locations. |
| Automotive Motor Control | Industrial Power Systems |
|
Use Scenario: Providing gate-drive and logic power for small BLDC or stepper motor controllers in HVAC actuators, seat adjusters, and mirror positioning systems. IC Role / Device Role / Timing Role: Compact, AEC-Q100-compliant DC-DC stage delivering clean, regulated 5V/3.3V to MCU and gate drivers. Use Value: Integrated OCP and thermal shutdown protect against stall-induced overcurrent; 150°C max junction temp supports under-hood placement near motors. |
Use Scenario: Powering industrial HMIs, PLC I/O modules, and sensor interfaces operating from 24V or 48V factory bus supplies with strict EMI limits. IC Role / Device Role / Timing Role: CISPR25 Class 5-compliant buck converter generating isolated or non-isolated auxiliary rails in compact enclosures. Use Value: Achieves <–45dBuV conducted emissions (150kHz–108MHz) with standard filter; SYNC output enables synchronized multi-rail designs to avoid beat frequencies. |
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-Z | 1A output current, identical 4.5V–60V input, same QFN-12 package and pinout. | Limited to lower-power loads (e.g., sensors, microcontrollers); not suitable for 2A LED drivers or motor gate drivers. | Select when output current ≤1A is sufficient and board space must be preserved using footprint-compatible upgrade path. |
| TPS54360BQPWPRQ1 | 3.5A output, 3.5V–60V input, external MOSFETs required; larger HTSSOP-20 package; no wettable flanks. | Higher current capability but requires additional FETs, gate drivers, and loop compensation components - increases design complexity and BOM cost. | Choose only when >2A output is mandatory and layout area is not constrained; otherwise MPQ4572GQB-Z offers superior integration and thermal performance. |
Compared with MPQ4570GQB-Z, MPQ4572GQB-Z doubles output current in the same footprint; compared with TPS54360BQPWPRQ1, it reduces component count by integrating both MOSFETs and compensation while meeting AEC-Q100 Grade-1 and CISPR25 Class 5 requirements out-of-the-box.
Availability
MPQ4572GQB-Z is available at Aetrix Electronics and suitable for automotive infotainment, LED lighting, and motor control applications requiring stable component supply across extended temperature ranges and stringent automotive qualification.
Supply support for MPQ4572GQB-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, with core expertise in DC-DC conversion, motor drivers, and LED lighting controllers.
The MPQ4572 belongs to MPS's AEC-Q100-qualified automotive buck converter product line, engineered specifically for harsh-environment power delivery in infotainment, body electronics, and ADAS subsystems where reliability, efficiency, and compactness are critical.
FAQ
What is the minimum input voltage required for regulation under cold-crank conditions?
The MPQ4572GQB-Z supports low-dropout mode down to VIN = 4.5V while maintaining regulation - verified per AEC-Q100 cold-crank test (ISO 16750-2). At VOUT = 5V, it sustains output within ±3% even when VIN drops to 4.8V at 2A load, thanks to adaptive duty-cycle extension.
Does the MPQ4572GQB-Z require external compensation components?
No. The MPQ4572GQB-Z features fully internal compensation - no external Type-II or Type-III compensation network is needed. This reduces design time and PCB area while ensuring stable operation with standard 15μH inductors and ceramic output capacitors.
How does the CCM/SYNCO pin function in synchronization mode?
When configured as SYNC output (pin left floating), CCM/SYNCO delivers a 180° out-of-phase clock signal referenced to the internal oscillator. This allows precise interleaving with a second MPQ4572 or compatible converter to halve input ripple current and reduce EMI peaks.
What is the thermal resistance (θJA) of the QFN-12 package on a standard 4-layer PCB?
Measured per JESD51-7 on a 4-layer PCB, θJA is 60°C/W. On MPS's EVQ4572-QB-00A evaluation board (8.9cm × 8.9cm, 2oz copper), θJA improves to 45°C/W - enabling 2A continuous operation at +85°C ambient without forced airflow.
Can the MPQ4572GQB-Z be used in non-automotive industrial applications?
Yes. While AEC-Q100 qualified, its 4.5V–60V input range, –40°C to +125°C operation, and CISPR25 Class 5 EMI compliance make it equally suitable for industrial HMIs, railway signaling, and telecom power supplies where robustness and regulatory certification are required.
What failure protections activate during a sustained short circuit at the output?
Upon short circuit, valley-current OCP triggers immediately, followed by hiccup-mode SCP: the device shuts down for ~10ms, then attempts restart. This cycle repeats until fault clears, limiting average power dissipation to <150mW and preventing thermal runaway or package damage.
Is the FB pin compatible with resistive feedback dividers using standard 1% tolerance resistors?
Yes. With ±1% reference accuracy at 25°C and ±2% over full temperature range, the FB pin supports standard 1% metal-film or thick-film resistors. For 5V output, a 160kΩ top/30.1kΩ bottom divider yields <±1.5% total output error across –40°C to +125°C.
MPQ4572GQB-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-Z FAQ
1.How can I place an order for MPQ4572GQB-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4572GQB-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-Z reliable?
The price and inventory of MPQ4572GQB-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-Z is usually 5 days.
3.What payment methods are accepted for MPQ4572GQB-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4572GQB-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4572GQB-Z?
MPQ4572GQB-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4572GQB-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-Z?
For technical support, including MPQ4572GQB-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4572GQB-Z requirements.
6.How does Aetrix verify that MPQ4572GQB-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4572GQB-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-Z meets industry standards.
7.What is the process for return or replacement of MPQ4572GQB-Z?
All MPQ4572GQB-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4572GQB-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-Z part is unused and in its original packaging.
Return procedure for MPQ4572GQB-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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