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Monolithic Power Systems Inc. MPQ4480GV-FD-AEC1-Z
- Part No.:
- MPQ4480GV-FD-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 25-PowerVFQFN
- Datasheet:
-
MPQ4480GV-FD-AEC1-Z.pdf
- Description:
- IC REG BUCK ADJ 6A 25QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,594
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Product details
Overview
MPQ4480GV-FD-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, synchronous step-down DC/DC converter delivering 6A continuous output current across a 4.2V–36V input range. It integrates 20mΩ/15mΩ high-side/low-side MOSFETs, features spread-spectrum operation (±10% around 450kHz), and supports adjustable line-drop compensation for automotive USB power rails and infotainment systems.
For engineers reviewing the MPQ4480GV-FD-AEC1-Z datasheet, MPQ4480GV-FD-AEC1-Z pinout, MPQ4480GV-FD-AEC1-Z application, or MPQ4480GV-FD-AEC1-Z equivalent, key selection criteria include its AEC-Q100 qualification, integrated ground-sensing resistor (4mΩ), three-level CC current limit (2.75A/3.75A/7.5A), forced PWM mode, and QFN-25 wettable-flank package for automotive thermal and reliability validation.
Technical Context
The MPQ4480GV-FD-AEC1-Z employs peak-current-mode control with fixed-frequency operation and frequency foldback above 1.2MHz at VIN >15V. Its internal 5.05V VCC LDO powers all circuitry and remains regulated down to VIN = 5.05V, enabling stable biasing during cold-crank conditions.
It implements dual overcurrent protection: primary CC mode via RGND-to-PGND sensing (with 12A secondary threshold triggering GATE pull-low), and OVP with dynamic regulation using LS-FET discharge. Spread-spectrum modulation is fixed at ±10% around 450kHz and independent of FREQ/SYNC pin configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.2V to 36V - Supports full automotive battery range including cold-crank (4.2V) and load-dump (36V). |
| Output Current | 6A continuous - Delivers full rated current without external MOSFETs; validated at TJ ≤ 125°C. |
| Switching Frequency | Fixed 450kHz ±10% spread spectrum - Reduces EMI peak emissions without requiring external SYNC source. |
| Internal MOSFET RDS(ON) | 20mΩ HS / 15mΩ LS - Enables >90% efficiency at 5V/6A with 12V input and 4.7µH inductor. |
| Feedback Reference | 1.0V ±15mV - Sets output voltage via external resistor divider; enables 1V–20V programmable VOUT. |
| Current Limit Options | 2.75A / 3.75A / 7.5A - Configurable via ILIM pin (GND/float/VCC); 7.5A supports transient overload handling. |
| Line Drop Compensation | Programmable gain (0.6/3.25/6.75 µA/A) via VDROP pin - Compensates up to ~73mV drop at 3A using 40.2kΩ R1. |
| Thermal Shutdown | 165°C with 20°C hysteresis - Protects die during sustained overload; resumes operation after cooldown. |
Pinout & Package
MPQ4480GV-FD-AEC1-Z is housed in a thermally enhanced QFN-25 (4mm × 5mm) package with wettable flanks for automated optical inspection (AOI) and improved solder joint reliability in automotive reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,5,13,17 PGND | Power ground reference | Low-impedance return path for high-current switching; must be connected together with wide copper and multiple vias. |
| 2,16 RGND | Remote ground sense | Connects to USB_GND via external N-MOSFET; enables battery-short-to-ground protection when current exceeds 12A. |
| 3,15 IN | Main input supply | Accepts 4.2V–36V; powers internal circuitry and serves as HS-FET drain; requires local 100µF ceramic + bulk capacitance. |
| 4,8,9,14 SW | Switch node | High dv/dt node connecting internal HS/LS FETs; must be routed with minimal loop area and low-inductance layout. |
| 11 EN | Enable control | Auto-pull-up (7µA); two-stage threshold (1V enables bias, 2V enables switching); supports EN discharge during shutdown. |
| 12 FREQ/SYNC | Frequency programming | Unused in FD variant - spread spectrum is internal and fixed; pin must be grounded per design guidelines. |
| 22 VDROP | Line drop gain select | Three-level gain setting (GND/float/VCC) adjusts compensation current injected into FB pin based on load current. |
| 23 ILIM | CC current limit select | Sets primary overcurrent threshold: GND=2.75A, float=3.75A, VCC=7.5A - critical for USB port current compliance. |
| 24 GATE | External MOSFET driver | Open-drain output pulls low to disable external N-MOSFET during RGND short events; 85Ω pull-down resistance. |
| 25 FB | Feedback input | Compares divided output voltage against 1.0V reference; accepts line-drop compensation current to maintain remote load voltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C junction operation with lifetime reliability testing per automotive stress standards. |
| Integrated 4mΩ ground-sensing resistor | Enables accurate RGND-to-PGND current monitoring without external shunt, reducing BOM count and PCB area. |
| Spread-spectrum EMI reduction | ±10% frequency dither centered at 450kHz lowers radiated emissions peaks without external components or clock sources. |
| Three-level adjustable CC limit | Hardware-selectable thresholds (2.75A/3.75A/7.5A) allow precise USB port current limiting and system-level fault grading. |
| Low-dropout forced PWM mode | Maintains constant frequency and avoids subharmonic oscillation during light-load or near-dropout conditions. |
| Battery short-to-ground protection | Detects RGND-to-battery shorts and disables external MOSFET via GATE pin, preventing damage during cable fault events. |
Applications
| Automotive Infotainment Power | Automotive USB-C Hub Supply |
|---|---|
Use Scenario: Powering head-unit SoC, display interface, and audio codecs in vehicle dashboards under varying battery conditions. IC Role / Device Role / Timing Role: Primary 5V/3.3V buck regulator with AEC-Q100 compliance, cold-crank support, and EMI-controlled switching. Use Value: Maintains stable rail during 4.2V cold-crank and 36V load-dump transients while meeting CISPR-25 Class 5 radiated emission limits. | Use Scenario: Delivering regulated 5V/3A to multiple USB ports in center console hubs with cable-length-induced IR drop. IC Role / Device Role / Timing Role: Synchronous buck controller with line-drop compensation and hardware-enforced current limiting per port. Use Value: Compensates up to 73mV voltage drop at 3A using VDROP pin and R1, ensuring USB spec-compliant 4.75V minimum at connector. |
| Wireless Charging Transmitter | ADAS Camera Module Supply |
Use Scenario: Providing clean, low-noise 9V/2A supply to Qi-compliant transmitter coils with tight thermal constraints. IC Role / Device Role / Timing Role: High-efficiency, forced-PWM buck converter with spread spectrum to avoid interference with 110–205kHz Qi carrier signals. Use Value: Fixed 450kHz ±10% switching avoids spectral overlap with Qi communication bands while sustaining >92% efficiency. | Use Scenario: Powering 12MP image sensor and ISP in rear-view or surround-view cameras exposed to engine bay temperatures. IC Role / Device Role / Timing Role: AEC-Q100 qualified 3.3V/2A buck with thermal shutdown (165°C) and hiccup-mode fault recovery for unattended operation. Use Value: Survives 125°C ambient with derated output and recovers automatically after thermal fault clears-no host intervention required. |
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 |
|---|---|---|---|
| MPQ4480GV-AEC1-Z | No spread-spectrum; uses external resistor to set fSW (235kHz–2.2MHz); no fixed 450kHz dither. | Suitable for noise-sensitive analog circuits where deterministic frequency is preferred over EMI reduction. | Select when EMI filtering is handled externally or when frequency synchronization to system clock is required. |
| TPS546B24RVFT | PMBus-enabled, 6A, 3–18V input; digital control loop; no AEC-Q100 qualification; 2.5mm × 3mm QFN. | Targeted at industrial servers and telecom; lacks automotive qualification and battery-range support. | Choose only for non-automotive designs requiring telemetry, margining, or dynamic voltage scaling via I²C. |
Compared with MPQ4480GV-AEC1-Z, the FD variant trades frequency flexibility for certified EMI reduction, while TPS546B24RVFT offers digital configurability at the cost of automotive compliance and extended input range-making MPQ4480GV-FD-AEC1-Z optimal for production automotive USB and infotainment power rails.
Availability
MPQ4480GV-FD-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment systems, USB-C hub designs, and wireless charging transmitters requiring stable component supply with AEC-Q100 traceability and long-term production support.
Supply support for MPQ4480GV-FD-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 core expertise in DC/DC conversion, motor drivers, and LED lighting controllers.
The MPQ4480 product line targets automotive-grade power conversion, designed specifically for harsh-environment applications demanding AEC-Q100 qualification, wide input range, and integrated protection features.
FAQ
What distinguishes MPQ4480GV-FD-AEC1-Z from the standard MPQ4480GV-AEC1-Z?
The FD variant integrates fixed-frequency spread-spectrum modulation (±10% around 450kHz) to reduce EMI peak emissions, whereas the standard version relies on external resistor programming for 235kHz–2.2MHz operation without dither. The FD part's FREQ/SYNC pin is unused and must be grounded; it cannot be synchronized externally.
Can MPQ4480GV-FD-AEC1-Z operate safely during automotive cold-crank (4.2V)?
Yes. Its 4.2V minimum input rating, combined with low-dropout forced PWM mode and internal 5.05V VCC LDO that regulates down to VIN = 5.05V, ensures reliable startup and regulation during cold-crank events without brownout or reset.
How does the line-drop compensation function in practice?
By sensing load current through the internal 4mΩ RGND-to-PGND resistor, the IC injects a proportional current (gain set by VDROP pin) into the FB node. This raises the effective feedback voltage, causing the controller to increase VOUT to offset IR drop across PCB traces-verified to deliver ~73mV compensation at 3A with VDROP=GND and R1=40.2kΩ.
Is external bootstrap capacitor required, and what value is recommended?
Yes. A 0.22µF ceramic capacitor must be placed between BST and SW pins to sustain high-side gate drive. This capacitor is charged during low-side conduction via internal charge pump and must be located within 2mm of the BST/SW pins to minimize parasitic inductance.
Does MPQ4480GV-FD-AEC1-Z support pre-biased output startup?
Yes. When the output is pre-biased at startup, the IC disables both HS and LS switches until the internal soft-start capacitor voltage exceeds the feedback reference (1.0V), preventing reverse current flow and ensuring controlled ramp-up without output overshoot.
What protection features activate during a USB_GND-to-battery short?
When RGND-to-battery short current exceeds 12A, the IC pulls the GATE pin low to turn off the external N-MOSFET within microseconds. Switching halts immediately, and normal operation resumes automatically once the short is removed-no latch or manual reset required.
How is thermal performance validated for automotive under-hood use?
Thermal shutdown triggers at 165°C junction temperature with 20°C hysteresis. Measured θJA = 23°C/W on a 4-layer 50mm×50mm EVB confirms ≤125°C junction rise at 6A/12V input with 200LFM airflow-meeting AEC-Q100 Grade 1 ambient requirements.
MPQ4480GV-FD-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 25-PowerVFQFN
- 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):
- 4.2V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 36V
- Current - Output:
- 6A
- Frequency - Switching:
- 235kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 25-QFN (4x5)
MPQ4480GV-FD-AEC1-Z FAQ
1.How can I place an order for MPQ4480GV-FD-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4480GV-FD-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 MPQ4480GV-FD-AEC1-Z reliable?
The price and inventory of MPQ4480GV-FD-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 MPQ4480GV-FD-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ4480GV-FD-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4480GV-FD-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4480GV-FD-AEC1-Z?
MPQ4480GV-FD-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4480GV-FD-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 MPQ4480GV-FD-AEC1-Z?
For technical support, including MPQ4480GV-FD-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4480GV-FD-AEC1-Z requirements.
6.How does Aetrix verify that MPQ4480GV-FD-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4480GV-FD-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 MPQ4480GV-FD-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ4480GV-FD-AEC1-Z?
All MPQ4480GV-FD-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4480GV-FD-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 MPQ4480GV-FD-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ4480GV-FD-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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