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Monolithic Power Systems Inc. MPQ4228GRE-AEC1-P
- Part No.:
- MPQ4228GRE-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Special Purpose Regulators
- Package:
- 22-VFQFN
- Datasheet:
-
MPQ4228GRE-AEC1-P.pdf
- Description:
- 3A, 36V, BUCK CONVERTER WITH USB
- Quantity:
- Payment:
- Shipping:
Inventory:497
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Product details
Overview
MPQ4228GRE-AEC1-P from Monolithic Power Systems is a monolithic 36V, 3A synchronous buck converter with integrated USB Type-C DFP and BC1.2-compliant charging port, AEC-Q100 Grade 1 qualified for automotive applications. It delivers regulated 5V @ 3A output across 4.2V–36V input, supports Apple 3A Divider, DCP, and 1.2V/1.2V modes, and integrates 20mΩ USB switch, NTC thermal monitoring, and ±8kV ESD protection on CC1/CC2 pins - deployed in infotainment head units and ADAS camera power supplies.
For engineers reviewing the MPQ4228GRE-AEC1-P datasheet, MPQ4228GRE-AEC1-P pinout, MPQ4228GRE-AEC1-P application, or MPQ4228GRE-AEC1-P equivalent, key selection criteria include USB port auto-detection logic (Type-C 5V@3A DFP + Type-A fallback), dual-frequency operation (420kHz/2.2MHz with spread spectrum), independent EN1-controlled USB enable/disable, load-shedding temperature threshold (145°C), and fault reporting via open-drain FLT pin.
Technical Context
The MPQ4228GRE-AEC1-P implements peak-current-mode control with internal 50mΩ/30mΩ HS/LS MOSFETs, fixed-frequency PWM operation, and selectable FCCM/PFM mode via FREQ pin configuration. Its USB subsystem includes dedicated CC1/CC2 detection circuitry, DP/DM handshake logic, VCONN sourcing capability (1W), and programmable line-drop compensation via ADJ pin sinking current proportional to output current.
Thermal management integrates dual-stage NTC-based protection: load shedding at 145°C (configurable via resistor divider) and full thermal shutdown at 165°C. Fault handling employs hiccup-mode current limiting for both buck and USB paths, OVP at 115% nominal (5.75V), and short-to-battery protection on DP/DM/CC1/CC2/USB_OUT pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.2V to 36V continuous - supports 12V/24V automotive battery rails with cold-crank margin down to 4.2V. |
| Output Current | 3A continuous at 5V - sustained delivery verified across -40°C to +150°C junction temperature range. |
| Switching Frequency | 420kHz or 2.2MHz with ±10% spread spectrum - enables compact magnetics (4.7µH or 2.2µH) and EMI reduction in noise-sensitive domains. |
| USB Switch RDS(ON) | 20mΩ typical - minimizes voltage drop and power loss (<150mW at 3A) at USB_OUT under full load. |
| Feedback Reference | 792mV ±16mV - sets precise 5V output using standard 34kΩ/6.34kΩ resistor divider (±0.5% accuracy). |
| ESD Rating (CC1/CC2) | ±8kV IEC 61000-4-2 contact discharge - meets automotive-level robustness for exposed USB-C connector interfaces. |
| Thermal Shutdown | 165°C entry / 145°C hysteresis - ensures safe derating before silicon damage; NTC input enables PCB-localized thermal monitoring. |
| AEC-Q100 Grade | Grade 1 (−40°C to +125°C ambient) - qualified for engine bay–adjacent and cabin-mounted automotive electronics. |
Pinout & Package
MPQ4228GRE-AEC1-P is housed in a wettable-flank QFN-22 package (4mm × 4mm, 0.5mm pitch), optimized for automated optical inspection (AOI) and high-reliability solder joint formation in automotive manufacturing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 22 | CC1 / CC2 | USB Type-C configuration channel inputs - detect plug orientation, negotiate power role (DFP), and source VCONN when required. |
| 2 | FLT | Open-drain fault indicator - pulled low during USB OCP/SCP, buck OVP, DP/DM/CCx short-to-battery, or thermal shutdown. |
| 3 | USB_OUT | Regulated 5V USB bus output - delivers up to 3A with integrated 20mΩ switch and hiccup-mode overcurrent protection. |
| 4 | USB_IN | USB bus input - accepts 5V from upstream source; monitored for overvoltage (6.05V trip) and discharged during fault. |
| 5 | EN1 | Active-low USB enable - independently controls USB path while buck remains active; internal 1MΩ pull-down ensures default ON. |
| 6 | NTC | Thermistor input - configures load shedding (145°C) and thermal shutdown (165°C) thresholds via external resistor divider. |
| 7 | ADJ | Line-drop compensation node - sinks current proportional to output current to offset cable IR drop and maintain 5V at device port. |
| 8, 9 | DM / DP | USB 2.0 data lines - support BC1.2 DCP handshake (DP/DM short), Apple Divider mode (2.7V DP), and 1.2V/1.2V legacy detection. |
| 10 | FREQ | Frequency select - GND = 420kHz FCCM, floating = 420kHz PFM, VCC = 2.2MHz FCCM; enables EMI optimization and layout flexibility. |
| 11 | VCC1 | 5V internal LDO output - powers core logic; requires 1µF ceramic decoupling; sourced from VIN or buck VOUT to minimize dropout loss. |
| 12 | FB | Feedback input - compares divided output voltage against 792mV reference; frequency foldback activates below 400mV during short-circuit. |
| 13 | EN/SYNC | Global enable/synchronization - active-high enable with internal 500kΩ pull-down; accepts 200kHz–2.2MHz external clock for system timing alignment. |
| 14 | IN | Main input supply - accepts 4.2V–36V; requires bulk capacitance (100µF) and low-ESR ceramic (4.7µF×2) near pin for stability. |
| 15 | SW | Power switch node - connects to external 4.7µH inductor; wide PCB trace required to minimize switching loop inductance and EMI. |
| 16 | BST | Bootstrap capacitor connection - 220nF capacitor between SW and BST supplies gate drive for high-side MOSFET. |
| 17 | OUT | Buck output - provides 5V to downstream loads; can be connected to VCC1 to reduce LDO losses or floated if unused. |
| 18, 19, 21 | GND | Power ground - three dedicated pins ensure low-impedance return path for high-current buck and USB paths. |
| 20 | VCC2 | 3.45V internal LDO - powers USB interface circuitry; requires 4.7µF ceramic decoupling; used for NTC bias and CC comparator references. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated USB Type-C DFP Mode | Configures as 5V@3A downstream-facing port with CC1/CC2 detection, VCONN sourcing, and compliance to USB-IF certification. |
| Independent USB Enable Control | EN1 pin allows dynamic USB power gating without affecting buck regulator operation - critical for system-level power sequencing. |
| NTC-Based Thermal Load Shedding | Reduces USB output current to 1.5A at 145°C before full shutdown at 165°C - preserves functionality during transient thermal events. |
| Dual-Frequency Spread Spectrum | 420kHz (low EMI, high efficiency) or 2.2MHz (smaller inductors/caps) with ±10% dithering - simplifies EMI filter design across vehicle platforms. |
| Robust Short-to-Battery Protection | DP/DM/CC1/CC2/USB_OUT pins withstand direct connection to 18V battery rail without latch-up or damage - eliminates need for external TVS. |
| Apple MFI R33 Certification | Validated for use in Apple-certified automotive accessories requiring strict USB charging protocol compliance and safety margins. |
Applications
| Infotainment Head Unit Power | ADAS Camera Module Supply |
|---|---|
Use Scenario: Powers USB-C ports and internal SoC rails in automotive infotainment systems with 12V/24V battery input and cold-crank operation. IC Role / Device Role / Timing Role: Primary buck regulator + USB charging controller - delivers stable 5V@3A to USB peripherals while supporting Apple/BC1.2/Type-C protocols. Use Value: Eliminates discrete USB switch and separate buck IC, reducing BOM count by 4 components and PCB area by 35% versus discrete solution. |
Use Scenario: Supplies 5V@3A to dual-lens ADAS cameras with real-time video streaming, requiring low-noise, thermally robust power. IC Role / Device Role / Timing Role: Synchronous buck converter with integrated USB switch - maintains 5V regulation under 3A pulsed load while rejecting engine noise via spread-spectrum switching. Use Value: Achieves >92% efficiency at 3A/12VIN, limiting case temperature rise to <25°C on 4-layer PCB - avoids thermal throttling during continuous operation. |
| Telematics Control Unit (TCU) | Automotive Rear-Seat Entertainment |
Use Scenario: Provides isolated 5V power and USB charging to LTE/Wi-Fi modules and GNSS receivers in TCU modules mounted near engine compartment. IC Role / Device Role / Timing Role: Automotive-grade DC-DC with NTC thermal monitoring - sheds USB load at 145°C to sustain core communication functions during high-ambient conditions. Use Value: Passes AEC-Q100 Grade 1 qualification and supports extended temperature operation (-40°C to +125°C ambient), enabling under-hood placement. |
Use Scenario: Delivers 5V@3A to rear-seat USB-C ports in premium vehicles, supporting fast-charging of tablets and headphones with Type-C PD negotiation. IC Role / Device Role / Timing Role: USB Type-C DFP controller with VCONN sourcing and BC1.2 fallback - negotiates optimal power delivery regardless of connected device type. Use Value: Enables single-port compatibility with Apple, Samsung, and legacy Android devices - reduces service parts inventory and warranty claims. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB charging port controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4228GRE-Z | Non-AEC-Q100 commercial version; identical electrical specs but not qualified for automotive temperature or reliability stress testing. | Limited to industrial or consumer applications where AEC-Q100 is not mandated; lacks automotive PPAP documentation support. | Select only for non-automotive designs where cost sensitivity outweighs qualification requirements. |
| TPS65987D | Standalone USB-C PD controller (no integrated buck); requires external 5V supply and discrete power path; supports full PD 3.0 negotiation. | Enables higher-power (up to 100W) bidirectional charging but adds complexity, cost, and board space versus MPQ4228's integrated 5V@3A solution. | Choose when USB-C PD beyond 5V@3A is required; avoid when simplicity and AEC-Q100 compliance are primary goals. |
Compared with MPQ4228GRE-Z, the AEC1 variant adds automotive qualification and traceable lot control; compared with TPS65987D, it trades PD protocol flexibility for integration, size, and qualification - making it optimal for cost-constrained, fixed 5V@3A automotive USB ports.
Availability
MPQ4228GRE-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and telematics control units requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for MPQ4228GRE-AEC1-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 power management ICs for automotive, industrial, and computing markets, with global manufacturing and quality certifications including IATF 16949.
The MPQ4228 belongs to MPS's automotive-qualified DC-DC converter product line, designed specifically for USB charging port integration in vehicles - emphasizing AEC-Q100 reliability, thermal resilience, and protocol-compliant interoperability.
FAQ
What USB charging protocols does MPQ4228GRE-AEC1-P support?
The MPQ4228GRE-AEC1-P supports USB Type-C 5V@3A DFP mode, BC1.2 DCP (including Apple 3A Divider and 1.2V/1.2V modes), and Type-A fallback via CC1 resistor configuration (97.6kΩ). It does not support USB Power Delivery (PD) beyond 5V, nor alternate modes like DisplayPort or audio accessory.
How is thermal protection implemented on the MPQ4228GRE-AEC1-P?
Thermal protection uses an external NTC thermistor connected to the NTC pin. At 145°C, the IC initiates load shedding (reducing USB output to 1.5A); at 165°C, it fully shuts off USB_OUT and asserts FLT low. The thresholds are set by resistor divider ratios and are configurable per design requirements.
Can the MPQ4228GRE-AEC1-P operate without an external NTC thermistor?
Yes - connecting NTC directly to GND or leaving it floating disables thermal sensing. In this state, load shedding and thermal shutdown are inactive, but all other protections (OVP, OCP, short-to-battery) remain functional. This configuration is acceptable only in thermally benign environments.
What is the purpose of the ADJ pin, and how is it configured?
The ADJ pin sinks current proportional to output current to compensate for voltage drop across USB cables. A resistor from ADJ to GND sets the compensation gain; typical value is 0Ω (direct GND) for no compensation, or 10kΩ for ~2μA/A gain. No external capacitor is required.
Does MPQ4228GRE-AEC1-P require external bootstrap components?
Yes - a 220nF ceramic capacitor must be placed between SW and BST pins to form the floating supply for the high-side gate driver. This capacitor must be located close to the IC with short, low-inductance traces to ensure reliable switching and minimize shoot-through risk.
How does the FLT pin behave during fault conditions?
FLT is an open-drain output pulled low during USB overcurrent, USB input overvoltage, DP/DM/CC1/CC2 short-to-battery, or thermal shutdown. It remains low until the fault clears and the IC resets - either via EN/SYNC toggle or after hiccup timeout. No external pull-up is required for basic indication.
Is MPQ4228GRE-AEC1-P compatible with USB-C cables that include e-markers?
No - the MPQ4228GRE-AEC1-P operates strictly as a fixed 5V@3A DFP and does not support USB-C e-marker communication or vendor-defined messages. It is intended for legacy and basic charging applications, not full PD ecosystems requiring identity/auth negotiation.
MPQ4228GRE-AEC1-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 22-VFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Converter, USB
- Voltage - Input:
- 36V
- Number of Outputs:
- 2
- Voltage - Output:
- 5V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 22-QFN (4x4)
MPQ4228GRE-AEC1-P FAQ
1.How can I place an order for MPQ4228GRE-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4228GRE-AEC1-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 MPQ4228GRE-AEC1-P reliable?
The price and inventory of MPQ4228GRE-AEC1-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ4228GRE-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ4228GRE-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4228GRE-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4228GRE-AEC1-P?
MPQ4228GRE-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4228GRE-AEC1-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 MPQ4228GRE-AEC1-P?
For technical support, including MPQ4228GRE-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4228GRE-AEC1-P requirements.
6.How does Aetrix verify that MPQ4228GRE-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ4228GRE-AEC1-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 MPQ4228GRE-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ4228GRE-AEC1-P?
All MPQ4228GRE-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4228GRE-AEC1-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 MPQ4228GRE-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ4228GRE-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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