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Monolithic Power Systems Inc. MPQ4573GQBE-AEC1-Z
- Part No.:
- MPQ4573GQBE-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 12-VFQFN
- Datasheet:
-
MPQ4573GQBE-AEC1-Z.pdf
- Description:
- IC REG BUCK ADJ 2.5A 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,200
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Product details
Overview
MPQ4573GQBE-AEC1-Z from Monolithic Power Systems is a fully integrated, AEC-Q100 Grade 1 qualified synchronous step-down converter delivering up to 2.5A continuous output current with 4.5V–60V input range, 250mΩ/45mΩ internal HS/LS MOSFETs, and 40μA quiescent current. It enables compact, high-efficiency power conversion in automotive infotainment, LED lighting, and motor control systems under cold-crank and load-dump conditions.
For engineers reviewing the MPQ4573GQBE-AEC1-Z datasheet, MPQ4573GQBE-AEC1-Z pinout, MPQ4573GQBE-AEC1-Z application, or MPQ4573GQBE-AEC1-Z equivalent, key selection criteria include its AEC-Q100 qualification, wettable flank QFN-12 package, programmable 300–2200kHz switching frequency via FREQ pin, valley-current OCP, and dual-mode light-load operation (AAM/FCCM).
Technical Context
The MPQ4573GQBE-AEC1-Z employs peak-current-mode control with valley-current over-current protection and zero-current detection for stable regulation across wide VIN and temperature ranges. Its internal 5V VCC regulator powers gate drivers and control logic, while bootstrap (BST) and switch (SW) pins enable high-side MOSFET drive without external components.
It integrates soft-start (0.45ms), power-good (PG) with ±8% VOUT window, EN threshold hysteresis (330mV), and configurable CCM/AAM mode selection. The 180° out-of-phase SYNCO clock supports multi-phase synchronization, and LDO-mode operation sustains regulation during automotive cold-crank down to 4.5V input.
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) |
| Output Current | 2.5A continuous - sufficient for powering microcontrollers, sensors, and actuators in ADAS and body electronics |
| Internal MOSFETs | 250mΩ HS-FET / 45mΩ LS-FET - eliminates need for external Schottky diode and reduces conduction losses |
| Quiescent Current | 40μA typical - enables low-power always-on subsystems without excessive battery drain |
| Switching Frequency | Configurable 300–2200kHz via resistor on FREQ pin - allows EMI optimization and inductor size reduction |
| Feedback Accuracy | ±1% at 25°C, ±2% over –40°C to +125°C - ensures tight output voltage regulation in harsh environments |
| Shutdown Current | 2μA maximum - critical for ultra-low-power sleep modes in automotive ECUs |
Pinout & Package
MPQ4573GQBE-AEC1-Z is housed in a wettable flank QFN-12 package (2.5mm × 3mm, 0.5mm pitch), optimized for automated optical inspection (AOI) and thermal performance in automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | Bootstrap supply | Provides floating gate drive voltage for HS-FET; requires capacitor between BST and SW |
| SW | Power switch node | Connects to external inductor; carries high-frequency switching current and voltage stress |
| PG | Power-good indicator | Open-drain output asserting valid VOUT (90–108% of setpoint); requires external pull-up |
| FB | Feedback input | Negative input of error amplifier; sets output voltage via external resistor divider |
| FREQ | Frequency programming | Resistor-to-GND sets fSW from 300kHz to 2200kHz; enables EMI tuning |
| VCC | Internal bias supply | Regulated 5V output powering internal circuitry; requires ≥1µF local decoupling |
| GND | Ground reference | Primary return path for power and signal; must connect to large copper pour for thermal/EMI control |
| VIN | Main input supply | Accepts 4.5–60V; requires low-ESR ceramic capacitor placed adjacent to pin |
| EN | Enable control | Logic-level input (1.45V turn-on, 1.12V turn-off) with 330mV hysteresis for noise immunity |
| CCM/SYNCO | Mode select & sync output | Pull to GND for forced CCM; float for AAM; outputs 180° out-of-phase clock for multi-phase sync |
| NC (9,10) | No connection | Thermally and electrically tied to exposed pad; recommended to connect to GND for improved thermal dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Advanced Asynchronous Modulation (AAM) | Reduces switching frequency under light load to cut gate driver and switching losses, improving efficiency at <100mA |
| Low-Dropout (LDO) Mode | Maintains regulation during cold-crank events down to 4.5V input, preventing system brownout |
| Valley-Current Over-Current Protection | Detects current at valley point to prevent runaway during short-circuit or overload, enabling fast response |
| Hiccup-Mode Short-Circuit Protection | Shuts down and auto-restarts on SCP, limiting average power dissipation and preventing thermal damage |
| Wettable Flank QFN Package | Enables reliable solder joint inspection via AOI, meeting automotive process reliability requirements |
Applications
| Automotive Infotainment Systems | Automotive Lamps and LEDs |
|---|---|
Use Scenario: Powering head-unit SoCs, display controllers, and audio amplifiers in vehicles with wide battery voltage swings. IC Role / Device Role / Timing Role: Primary 5V/3.3V buck regulator supplying core logic and interface circuits. Use Value: AEC-Q100 Grade 1 qualification and cold-crank support ensure uninterrupted operation during engine start. | Use Scenario: Driving interior ambient lighting, exterior DRLs, and adaptive headlights requiring stable DC-DC conversion. IC Role / Device Role / Timing Role: Constant-current or constant-voltage source feeding LED strings or driver ICs. Use Value: High efficiency across load range and low IQ extend battery life in always-on lighting modules. |
| Automotive Motor Control | Industrial Power Systems |
Use Scenario: Supplying gate drivers, position sensors, and MCU peripherals in HVAC blower, seat actuator, and wiper control units. IC Role / Device Role / Timing Role: Secondary power rail generator isolated from noisy motor power domains. Use Value: Integrated OCP/SCP and thermal shutdown protect against motor stall-induced overloads. | Use Scenario: Providing regulated 5V/12V rails in industrial HMIs, PLC I/O modules, and ruggedized edge controllers. IC Role / Device Role / Timing Role: Compact, high-input-voltage buck converter replacing discrete solutions in space-constrained enclosures. Use Value: QFN-12 wettable flank package supports IPC-A-610 Class 3 assembly and long-term field reliability. |
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 |
|---|---|---|---|
| MPQ4572GQ-AEC1-Z | Lower 1.5A output current; identical 4.5–60V input, AEC-Q100 Grade 1, and QFN-12 package | Suitable for lower-power infotainment peripherals or sensor nodes where 2.5A headroom is unnecessary | Select when cost sensitivity outweighs current margin and board space allows same footprint |
| TPS54362-Q1 | 3.5A output, 3.5–60V input, but uses external MOSFETs and lacks integrated AAM mode or wettable flanks | Used in higher-current motor drives where discrete FET selection is preferred for thermal management | Choose only if design requires >2.5A or custom FET optimization; adds BOM count and layout complexity |
Compared with MPQ4572GQ-AEC1-Z, the MPQ4573GQBE-AEC1-Z delivers +67% output current in the same footprint; versus TPS54362-Q1, it offers integrated FETs, AAM, and AOI-ready packaging at the expense of peak current capability.
Availability
MPQ4573GQBE-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment systems, LED lighting modules, and motor control units requiring stable component supply with AEC-Q100 compliance and extended temperature operation.
Supply support for MPQ4573GQBE-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, with a focus on integration, efficiency, and automotive-grade reliability.
The MPQ4573 belongs to MPS's automotive-qualified DC-DC converter product line, designed specifically for demanding vehicle subsystems requiring wide-input operation, robust protection, and AEC-Q100 compliance.
FAQ
What is the purpose of the CCM/SYNCO pin?
The CCM/SYNCO pin serves dual functions: pulling it to GND forces continuous conduction mode (CCM) for consistent ripple and EMI profile, while leaving it floating enables advanced asynchronous modulation (AAM) for higher light-load efficiency. It also outputs a 180° out-of-phase clock signal to synchronize multiple converters and reduce input ripple.
How does the MPQ4573GQBE-AEC1-Z handle automotive cold-crank conditions?
It maintains regulation down to 4.5V input via low-dropout (LDO) mode, where the internal control loop adjusts duty cycle to sustain output voltage even as battery voltage collapses during engine cranking. This prevents brownout of downstream electronics like microcontrollers and sensors.
What is the significance of the wettable flank QFN-12 package?
The wettable flank structure exposes vertical copper sidewalls on all perimeter pins, enabling automated optical inspection (AOI) of solder joints - a critical requirement for automotive manufacturing process validation and zero-defect quality targets per IATF 16949.
Can the MPQ4573GQBE-AEC1-Z be used without an external compensation network?
Yes - it features internal compensation, eliminating the need for external Type-II or Type-III compensation networks. This simplifies design, reduces BOM count, and improves stability across operating conditions without requiring loop analysis or tuning.
What protections are implemented to ensure reliability in automotive environments?
It integrates input UVLO with hysteresis, valley-current OCP, hiccup-mode SCP, auto-recovery thermal shutdown (170°C trip), and PG monitoring with ±8% VOUT window. All protections are qualified per AEC-Q100 Grade 1 (–40°C to +125°C junction) and validated under load-dump and cold-crank stress profiles.
How is switching frequency configured, and what is the practical range?
Frequency is set by a single resistor from FREQ pin to GND: 76.8kΩ yields ~400kHz, 28kΩ yields ~1MHz, and 12.1kΩ yields ~2.2MHz. The actual range is 300–2200kHz, allowing trade-offs between inductor size, efficiency, and EMI performance in constrained layouts.
Does the device support power sequencing with other ICs?
Yes - the EN pin provides precise enable/disable control with 330mV hysteresis, and the open-drain PG output signals valid VOUT to upstream/downstream supervisors or MCUs. Combined with the 0.45ms soft-start, this enables controlled power-up sequencing in multi-rail automotive systems.
MPQ4573GQBE-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- 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:
- 2.5A
- Frequency - Switching:
- Up to 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 12-QFN (2.5x3)
MPQ4573GQBE-AEC1-Z FAQ
1.How can I place an order for MPQ4573GQBE-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4573GQBE-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 MPQ4573GQBE-AEC1-Z reliable?
The price and inventory of MPQ4573GQBE-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 MPQ4573GQBE-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ4573GQBE-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4573GQBE-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4573GQBE-AEC1-Z?
MPQ4573GQBE-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4573GQBE-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 MPQ4573GQBE-AEC1-Z?
For technical support, including MPQ4573GQBE-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4573GQBE-AEC1-Z requirements.
6.How does Aetrix verify that MPQ4573GQBE-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4573GQBE-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 MPQ4573GQBE-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ4573GQBE-AEC1-Z?
All MPQ4573GQBE-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4573GQBE-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 MPQ4573GQBE-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ4573GQBE-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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