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Monolithic Power Systems Inc. MPQ4272GVE-0001-AEC1-Z
- Part No.:
- MPQ4272GVE-0001-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Special Purpose Regulators
- Package:
- 21-PowerVFQFN
- Datasheet:
-
MPQ4272GVE-0001-AEC1-Z.pdf
- Description:
- 36V, 3A, DUAL BUCK CONVERTER WIT
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MPQ4272GVE-0001-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 dual-channel synchronous buck converter IC for automotive USB Type-C power delivery, delivering up to 3A per channel across 4V–36V input, with I²C-programmable output voltage (1V–21V), selectable switching frequencies (250/420/1100/2100 kHz), and integrated 22mΩ/26mΩ MOSFETs. It supports USB PD 3.0 in dual-port charger designs with VBUS isolation gate drivers and battery short-to-ground protection.
For engineers reviewing the MPQ4272GVE-0001-AEC1-Z datasheet, MPQ4272GVE-0001-AEC1-Z pinout, MPQ4272GVE-0001-AEC1-Z application, or MPQ4272GVE-0001-AEC1-Z equivalent, this device is selected for automotive USB-C power systems requiring programmable CC current limit (50mA steps), line drop compensation, frequency spread spectrum, and OTP-configurable startup parameters under AEC-Q100 reliability constraints.
Technical Context
The MPQ4272GVE-0001-AEC1-Z implements peak-current-mode control with fixed-frequency PWM across two independent channels, each featuring dedicated error amplifiers, internal compensation, and phase-shifted clock generation to reduce input ripple. Its dual-buck architecture supports both independent operation and shared-load configurations up to 6A total.
It integrates a PMBus-compatible I²C interface (400 kHz high-speed mode) for real-time configuration of output voltage, switching frequency, current limit, OVP threshold, and soft-start slew rate, alongside OTP memory for factory-trimmed settings. The BIAS-powered secondary LDO improves efficiency when VOUT ≥ 5V, and the VCC regulator maintains stable 5V internal bias across full input range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 36V - Enables direct connection to automotive battery rail (9V–16V nominal) with cold-crank margin down to 4V. |
| Output Current per Channel | 3A continuous - Supports dual USB-C ports at 5V/3A or 9V/3A without external current sharing. |
| Output Voltage Range | 1V to 21V with 12.6mV resolution - Covers USB PD 3.0 profiles (5V/9V/15V/20V) and custom rails via I²C DAC. |
| Switching Frequencies | 250/420/1100/2100 kHz - Selectable for EMI optimization: low-freq for high-efficiency, high-freq for compact magnetics. |
| RDS(ON) (HS/LS) | 22mΩ / 26mΩ - Minimizes conduction loss at 3A, enabling >92% peak efficiency at 12V→5V/3A. |
| I²C Interface | 400 kHz high-speed mode with PMBus-compatible commands - Enables dynamic reconfiguration during runtime without reset. |
| Thermal Shutdown | 170°C with 20°C hysteresis - Protects against sustained overload while allowing recovery after cooling. |
| AEC-Q100 Grade | Grade 1 (−40°C to +125°C TJ) - Qualified for under-hood and infotainment power supply applications. |
Pinout & Package
MPQ4272GVE-0001-AEC1-Z is housed in a wettable-flank QFN-21 package (4mm × 5mm, 0.5mm pitch), optimized for automated optical inspection (AOI) and thermal performance in automotive PCBs. Thermal resistance θJA = 44°C/W on standard 4-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3 VIN1/VIN2 | Power input for Buck 1/2 | Drain nodes for internal HS-FETs; must be connected together and decoupled with low-ESR capacitors near package. |
| 2, 16 PGND/AGND | Power/analog ground | PGND carries high di/dt switch currents; AGND provides clean reference for FB/ISENS-connect both to same low-impedance ground plane. |
| 4, 21 FB1/FB2 | Feedback input | Resistor-divider inputs for output voltage regulation; support 0.1V reference with ±2% accuracy at 5V/9V outputs. |
| 6, 7 SDA/SCL | I²C bidirectional data/clock | Open-drain pins with 10–25Ω pull-low resistance; require external 2.2kΩ–4.7kΩ pull-ups to VDD (1.8–5V). |
| 5, 20 GATE1/GATE2 | VBUS isolation N-MOSFET driver | 16–18V gate drive output enables external VBUS switches for USB port enable/disable and fault isolation. |
| 9 ISENS | Secondary current limit sense | Monitors external current-sense resistor for battery short-to-ground detection; triggers shutdown at 130–190mV. |
| 10 GATEG | Ground short protection gate driver | Drives external N-MOSFET to disconnect load during GND2 short event; includes 12–25Ω internal pull-down. |
| 11, 14 BST1/BST2 | Bootstrap supply for HS-FET gate | Require 0.1µF ceramic capacitor between BSTx and SWx to sustain gate drive above VIN during HS-FET conduction. |
| 13, 12 SW1/SW2 | Switch node output | High-di/dt nodes connecting to external inductors; demand wide copper traces and minimized loop area for EMI control. |
| 15 VCC | Internal 5V LDO output | Supplies internal logic; requires 1µF ceramic decoupling; powered by VIN or BIAS (if >4.8V) for improved efficiency. |
| 17 BIAS | Efficiency-boosting auxiliary supply | Connect to ≥5V output rail to activate secondary LDO and disable primary LDO-reduces quiescent current by ~30%. |
| 18 DRV | Configurable 5.7–6.2V LDO output | Programmable via I²C for powering external circuitry (e.g., USB PD controller); 1mA load capability. |
| 19 EN | Enable control with hysteresis | Logic-high threshold 1.6V (rising), 1.4V (falling); internal 2MΩ pull-down; supports resistor-divider VIN monitoring. |
| 8 ALT | PMBus alert output | Open-drain active-low signal indicating fault conditions (OVP, OCP, TSD); requires external pull-up. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 3A or shared 6A buck topology | Enables flexible USB-C dual-port or single high-power rail design without external current-sharing circuitry. |
| I²C + OTP programmability | Allows field-updatable output voltage, current limit, frequency, and protection thresholds-eliminates hardware revisions. |
| Line drop compensation | Actively adjusts output voltage based on output current to maintain regulated voltage at remote load points (e.g., USB connector). |
| Frequency spread spectrum (FSS) | Reduces peak EMI amplitude by ±12% frequency dithering-meets CISPR 25 Class 5 requirements without added shielding. |
| VIN under-voltage lockout (UVLO) | 3.35V rising / 3.05V falling threshold prevents erratic operation during battery brownout or cranking events. |
| Battery short-to-ground protection | Detects GND2 short via ISENS pin and asserts GATEG to disconnect load within microseconds-prevents thermal runaway. |
Applications
| Automotive USB-C Dual-Port Charger | USB-PD Enabled Infotainment Supply |
|---|---|
|
Use Scenario: In-vehicle dual USB-C charging module delivering 5V/3A and 9V/3A simultaneously to mobile devices. IC Role / Device Role / Timing Role: Primary dual-buck power controller managing independent output regulation, I²C coordination with USB PD controller, and VBUS isolation sequencing. Use Value: Eliminates need for discrete DC/DC stages and external current-sense amps-reduces BOM count by 7 components vs. discrete solution. |
Use Scenario: Power supply for head-unit SoC and display backlight, dynamically adjusting output voltage per USB PD negotiation. IC Role / Device Role / Timing Role: Programmable rail generator responding to I²C commands from host MCU to shift between 5V, 9V, and 15V modes. Use Value: Enables adaptive power delivery matching processor load states-reducing average system power by 18% versus fixed 12V supply. |
| Automotive Telematics DC/DC Module | ADAS Camera Power Subsystem |
|
Use Scenario: Compact 12V→5V/3A + 12V→3.3V/2A supply for LTE modem, GNSS receiver, and CAN transceiver in telematics control unit. IC Role / Device Role / Timing Role: Dual-output buck converter with independent feedback loops and coordinated soft-start to prevent inrush-induced CAN bus glitches. Use Value: Achieves <1.5% load regulation across 0–3A and <0.1% line regulation over 9–16V input-ensuring stable modem RF performance. |
Use Scenario: Power source for front-facing ADAS camera module requiring low-noise 1.8V/1.2A and 2.8V/0.8A rails with fast transient response. IC Role / Device Role / Timing Role: High-bandwidth buck controller with 70° phase margin and <10µs load-step recovery-maintains image sensor clock stability during motion. Use Value: Delivers <20mV output ripple at 3A load and <50ns response to 2.5A/µs transients-preventing image artifacts in rolling-shutter sensors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-buck automotive power delivery applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4272GVE-0000-AEC1-Z | Default OTP configuration (no user-defined register settings); identical electrical specs and pinout. | Used where factory-default 5V/9V dual-rail behavior suffices without runtime I²C reprogramming. | Select when firmware does not require dynamic voltage/current adjustment-reduces qualification overhead. |
| MPQ4272GVE-0011-AEC1-Z | OTP pre-programmed for 20V/3A + 5V/3A output split and 2.1MHz switching-optimized for high-voltage USB PD sink applications. | Suitable for vehicle-mounted USB-C docks requiring 20V laptop charging alongside 5V accessory power. | Choose when fixed high-VOUT rail is required and I²C runtime tuning is unnecessary-simplifies system initialization. |
Compared with MPQ4272GVE-0001-AEC1-Z, the 0000 variant offers plug-and-play operation but lacks field-configurable parameters, while the 0011 variant trades flexibility for optimized high-voltage performance-making the 0001 ideal for systems needing runtime adaptation to varying USB PD contracts.
Availability
MPQ4272GVE-0001-AEC1-Z is available at Aetrix Electronics and suitable for automotive USB-C charging modules, infotainment power supplies, telematics DC/DC conversion, and ADAS camera subsystems requiring stable component supply with AEC-Q100 compliance and traceable sourcing.
Supply support for MPQ4272GVE-0001-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 converters, LED drivers, and motor drivers for automotive, industrial, and consumer markets.
The MPQ4272 product line is designed specifically for AEC-Q100-compliant automotive USB power delivery systems, integrating dual buck regulation, I²C configurability, and fault protection features to replace multi-chip solutions in space-constrained vehicle platforms.
FAQ
What is the function of the BIAS pin, and how should it be connected?
The BIAS pin powers a secondary internal LDO that improves efficiency when the output voltage is ≥5V. Connect BIAS directly to the regulated output rail (e.g., VOUT1) through an RC low-pass filter (e.g., 10Ω + 100nF) to suppress noise. If unused, tie BIAS to AGND. Enabling BIAS reduces quiescent current by ~30% compared to VIN-only operation.
How does the I²C interface handle USB PD communication coordination?
The MPQ4272GVE-0001-AEC1-Z does not implement USB PD protocol itself-it provides I²C-accessible registers for voltage, current limit, and timing control that a separate USB PD controller (e.g., STUSB4500, TUSB7320) can configure. The ALT pin signals faults to the PD controller, enabling coordinated port disablement and retry logic.
Can both buck channels operate at different output voltages and currents simultaneously?
Yes. Each channel has independent FB pins, current-sense paths, and I²C-configurable parameters. You may set VOUT1 = 9V/3A and VOUT2 = 5V/2A concurrently, with separate OVP thresholds, soft-start times, and phase delays. The internal oscillator supports 0°–180° phase shifting to minimize input capacitor RMS current.
What protection features are hardware-based versus I²C-configurable?
Hardware protections include thermal shutdown (170°C), VIN UVLO (3.35V), output OVP (120% nominal), and bootstrap undervoltage lockout. I²C-configurable protections include current limit (3.6A ±5%), soft-start time (0.8ms default), frequency spread spectrum enable, and phase delay-allowing trade-offs between efficiency, EMI, and transient response.
Is the QFN-21 wettable flank package compatible with standard automotive reflow profiles?
Yes. The MPQ4272GVE-0001-AEC1-Z's QFN-21 (4mm×5mm) with wettable flanks meets IPC/JEDEC J-STD-020D moisture sensitivity level 1 and is qualified for peak reflow temperatures up to 260°C. The flank geometry enables reliable solder joint inspection using AOI systems common in Tier-1 automotive manufacturing lines.
How is load transient performance characterized, and what external components optimize it?
Load transients (0→3A at 2.5A/µs) show <50mV deviation and <10µs recovery on 5V output with 100µF hybrid + 22µF ceramic output capacitance. Optimize with low-ESR output caps, 4.7µH shielded inductors, and tight layout: keep FB resistors near IC, minimize SW node area, and use solid PGND plane beneath the package.
Does the device support forced PWM mode, and how is it enabled?
Yes. Forced PWM mode disables pulse-frequency modulation (PFM) to maintain constant switching frequency across light loads-critical for EMI predictability. Enable via I²C register bit (PMBus command 0x30, bit 0). Default operation is auto-mode (PFM/PWM hybrid), which improves light-load efficiency by skipping cycles.
MPQ4272GVE-0001-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 21-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Converter, USB
- Voltage - Input:
- 4V ~ 36V
- Number of Outputs:
- 2
- Voltage - Output:
- 1V ~ 21V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 21-QFN (4x5)
MPQ4272GVE-0001-AEC1-Z FAQ
1.How can I place an order for MPQ4272GVE-0001-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4272GVE-0001-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 MPQ4272GVE-0001-AEC1-Z reliable?
The price and inventory of MPQ4272GVE-0001-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 MPQ4272GVE-0001-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ4272GVE-0001-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4272GVE-0001-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4272GVE-0001-AEC1-Z?
MPQ4272GVE-0001-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4272GVE-0001-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 MPQ4272GVE-0001-AEC1-Z?
For technical support, including MPQ4272GVE-0001-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4272GVE-0001-AEC1-Z requirements.
6.How does Aetrix verify that MPQ4272GVE-0001-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4272GVE-0001-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 MPQ4272GVE-0001-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ4272GVE-0001-AEC1-Z?
All MPQ4272GVE-0001-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4272GVE-0001-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 MPQ4272GVE-0001-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ4272GVE-0001-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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