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Monolithic Power Systems Inc. MPM3515GQVE-AEC1-P
- Part No.:
- MPM3515GQVE-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 17-PowerLQFN Module
- Datasheet:
-
MPM3515GQVE-AEC1-P.pdf
- Description:
- DC DC CONVERTER 0.8-30V
- Quantity:
- Payment:
- Shipping:
Inventory:1,276
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Product details
Overview
MPM3515GQVE-AEC1-P from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, synchronous step-down DC/DC power module integrating MOSFETs, inductor, and input/output capacitors in a QFN-17 (3mm×5mm×1.6mm) wettable flank package. It delivers 1.5A continuous output current across a 4V–36V input range, operates at a fixed 2.2MHz switching frequency with frequency foldback above 21V, and includes power good (PG), over-current protection with valley-current detection, and thermal shutdown.
For engineers reviewing the MPM3515GQVE-AEC1-P datasheet, MPM3515GQVE-AEC1-P pinout, MPM3515GQVE-AEC1-P application, or MPM3515GQVE-AEC1-P equivalent, key selection considerations include its integrated magnetics, CISPR25 Class 5 EMI compliance, forced CCM operation for low-light-load ripple, and automotive-grade reliability validated to -40°C to +125°C junction temperature.
Technical Context
The MPM3515GQVE-AEC1-P implements peak-current-mode control with internal compensation, enabling stable regulation using only two external resistors for output voltage setting. Its 4.8V internal LDO powers control circuitry across the full 4V–36V input range and integrates decoupling capacitance-no external VCC capacitor required.
It features dual-stage over-current protection: cycle-by-cycle peak limiting and valley-current detection triggering hiccup mode under sustained overload or short-circuit conditions. Frequency foldback activates at VIN >21V, during soft-start, and under fault conditions-reducing switching frequency to 1.1MHz to maintain control loop stability and limit power dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 36V - supports wide automotive battery rails including cold-crank (4.5V) and load-dump (36V) transients. |
| Output Current | 1.5A continuous - sufficient for powering microcontrollers, sensors, and interface ICs in ADAS and body electronics. |
| Switching Frequency | Fixed 2.2MHz (450kHz–2.2MHz syncable) - enables compact external components and fast transient response. |
| Feedback Reference | 0.807V ±13mV - sets precise output voltage via resistor divider; enables 0.8V–VIN×0.85 adjustable range. |
| Thermal Shutdown | 170°C activation with 20°C hysteresis - protects against sustained overload while allowing recovery without manual reset. |
| EMI Compliance | CISPR25 Class 5 radiated emissions - meets stringent automotive EMC requirements without additional filtering in typical layouts. |
| Power Good Threshold | 0.83–0.93×VFB rising, 0.78–0.88×VFB falling - provides accurate ±5% output voltage monitoring with 40–160μs delay. |
Pinout & Package
MPM3515GQVE-AEC1-P uses a QFN-17 (3mm×5mm×1.6mm) wettable flank package optimized for automotive reflow inspection and thermal performance. The exposed PGND pads (pins 14,15) and SW pins (6,7,8,12) are designed for direct copper pour connection to enhance heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (PG) | Open-drain power good indicator | Signals valid regulation (0.83–0.93×VFB) with 40–160μs delay; requires external pull-up for logic-level interface. |
| 2 (EN/SYNC) | Enable/synchronization input | Pull high ≥1.45V to enable; apply 450kHz–2.2MHz clock to synchronize switching; internal 500kΩ pull-down allows floating disable. |
| 3 (FB) | Feedback node | Connects to resistor divider tap; internal 0.807V reference enables precise output voltage setting; sensitive to noise-requires short, via-free routing. |
| 4 (VCC) | Internal 4.8V LDO output | Self-decoupled; no external capacitor needed; powers internal logic and gate drivers across full input range. |
| 5 (AGND) | Analog ground reference | Internally tied to PGND; serves as reference for FB, EN/SYNC, and PG-must be star-connected near IC for noise immunity. |
| 6,7,8,12 (SW) | Switch node | High-frequency drain connection of HS-FET; requires large copper pour for thermal management and EMI reduction. |
| 9,10,11 (OUT) | Power output | Delivers regulated output; connects directly to load and output capacitor; multiple pins reduce current density and parasitic inductance. |
| 13 (BST) | Bootstrap supply | Internally charged from VIN through integrated PMOS; no external diode or capacitor required for standard operation. |
| 14,15 (PGND) | Power ground return | Main return path for HS/LS-FET currents; must be connected to solid ground plane with multiple vias for low-impedance thermal and EMI paths. |
| 16 (IN) | Main input supply | Accepts 4V–36V; requires low-ESR ceramic capacitor (e.g., 4.7µF) placed adjacent with wide traces and multiple vias to PGND. |
| 17 (NC) | No connect | Must remain unconnected and floating; no internal connection or function. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated magnetics and passives | Eliminates external inductor and reduces BOM to only four components-resistor divider, input cap, output cap, and optional EMI filter. |
| Forced Continuous Conduction Mode (CCM) | Maintains fixed 2.2MHz operation from no-load to full-load, minimizing output ripple and simplifying EMI filter design. |
| Wettable flank QFN package | Enables automated optical inspection (AOI) of solder joints in automotive production-critical for AEC-Q100 Grade 1 reliability assurance. |
| Valley-current detection OCP | Prevents current runaway during short-circuit by forcing hiccup mode when valley current fails to drop below threshold-reducing average fault current and thermal stress. |
| Frequency foldback | Automatically halves switching frequency to 1.1MHz at VIN >21V, during soft-start, and under overload-preserving loop stability and efficiency at high input voltages. |
Applications
| ADAS Camera Power Supply | Automotive Infotainment Core Rail |
|---|---|
Use Scenario: Powers image signal processor (ISP) and MIPI interface in rear-view or surround-view camera modules. IC Role / Device Role / Timing Role: Primary 3.3V/1.5A point-of-load regulator converting 12V battery rail; provides clean, low-noise supply with fast transient response to handle burst pixel data transfers. Use Value: Integrated inductor eliminates EMI-sensitive external magnetics; 2.2MHz operation allows small 2.2µH inductor footprint; CISPR25 Class 5 compliance avoids costly shielding. | Use Scenario: Supplies core voltage to ARM-based infotainment SoC requiring stable 1.5V/1.5A with tight regulation. IC Role / Device Role / Timing Role: Synchronous buck converter operating in forced CCM to minimize light-load ripple and ensure consistent timing margin for DDR memory interfaces. Use Value: 0.807V reference enables precise 1.5V output via 75kΩ/35.7kΩ divider; thermal shutdown at 170°C prevents latch-up during prolonged CPU load peaks. |
| Body Control Module (BCM) MCU Rail | Automotive Telematics LTE Modem Supply |
Use Scenario: Generates 5V/1.5A for 32-bit MCU, CAN transceiver, and sensor interface in door module or lighting controller. IC Role / Device Role / Timing Role: Main DC/DC regulator handling wide-input transients (4V–36V); PG signal sequences MCU boot after stable 5V establishment. Use Value: 4V minimum input supports start-stop operation; EN/SYNC pin allows MCU-controlled power sequencing; AEC-Q100 Grade 1 ensures 15-year field life. | Use Scenario: Provides 3.3V/1.5A to LTE modem IC in telematics control unit (TCU), subject to aggressive thermal constraints and RF coexistence requirements. IC Role / Device Role / Timing Role: High-frequency buck converter placed near modem baseband IC to minimize trace inductance; PG signal triggers modem initialization upon rail validation. Use Value: Wettable flank package enables AOI verification of solder joints; 2.2MHz switching moves noise spectrum above LTE bands (700MHz–2.6GHz); low 75mΩ inductor DCR minimizes thermal rise at full load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPM3610GQV-AEC1 | 2.5A output, 4V–36V input, same QFN-17 package but higher RDS(ON) (110mΩ/70mΩ) and lower efficiency at 1.5A load. | Targets higher-current loads (e.g., radar SoCs); less optimal for 1.5A applications due to oversizing and cost premium. | Select when future-proofing for >1.8A peak loads or needing margin for derating in high-ambient environments. |
| TPS82130SILR | 1.8A output, 3V–17V input, 2.2MHz, but lacks AEC-Q100 qualification and CISPR25 Class 5 compliance. | Suitable for industrial or consumer portable devices; not certified for automotive ECU placement without additional EMI mitigation. | Choose only for non-automotive designs where AEC-Q100 and automotive EMC are not required-avoids qualification overhead. |
Compared with MPM3610GQV-AEC1, the MPM3515GQVE-AEC1-P offers better efficiency at 1.5A and lower system cost, while TPS82130SILR lacks automotive qualification and EMI certification-making the MPM3515GQVE-AEC1-P the only drop-in solution meeting full automotive Tier-1 requirements out-of-box.
Availability
MPM3515GQVE-AEC1-P is available at Aetrix Electronics and suitable for automotive ADAS camera systems, infotainment head units, and body control modules requiring stable component supply with AEC-Q100 Grade 1 assurance and long-term production continuity.
Supply support for MPM3515GQVE-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 analog and power ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MPM3515 product line delivers fully integrated DC/DC modules targeting automotive and industrial applications where space, reliability, and EMI compliance are critical-designed to replace discrete buck solutions with minimal external components and guaranteed AEC-Q100 qualification.
FAQ
What is the purpose of the BST pin, and is an external bootstrap capacitor required?
No external bootstrap capacitor or diode is required. The MPM3515GQVE-AEC1-P integrates a dedicated bootstrap regulator that charges an internal capacitor from VIN during LS-FET conduction. This self-contained architecture eliminates external components while maintaining reliable high-side gate drive across the full 4V–36V input range and duty cycles up to 85%.
How does frequency foldback improve system reliability under high input voltage?
When VIN exceeds ~21V, frequency foldback reduces switching frequency from 2.2MHz to 1.1MHz. This lowers switching losses and improves thermal margin during load-dump events (up to 36V), while preserving control loop stability and preventing current-limit runaway-critical for sustained operation in 24V commercial vehicle systems.
Can the MPM3515GQVE-AEC1-P operate without the external feedback resistors?
No. The FB pin requires an external resistor divider to set output voltage; the internal 0.807V reference is not internally connected to any output node. Omitting R1/R2 results in undefined output voltage and potential overvoltage damage to downstream circuitry. Minimum recommended R1 is 75kΩ for stability and noise immunity.
What is the role of the AGND pin, and how should it be routed on the PCB?
AGND serves as the analog reference for FB, EN/SYNC, and PG circuits. It is internally bonded to PGND but must be star-connected near the IC with short, low-inductance traces-never daisy-chained-to prevent digital switching noise from corrupting feedback accuracy or enable threshold stability.
Does the wettable flank feature affect thermal performance compared to standard QFN?
The wettable flank geometry does not degrade thermal performance; θJA remains 46°C/W (4-layer board). Its primary benefit is manufacturability: the vertical sidewall plating enables automated optical inspection of solder fillets-ensuring zero-defect assembly for AEC-Q100 Grade 1 automotive applications without sacrificing thermal or electrical performance.
How is over-current protection implemented, and what happens during a short-circuit event?
OCP uses dual mechanisms: cycle-by-cycle peak limiting (shuts off HS-FET when inductor current exceeds 2.4–5.5A) and valley-current detection. During sustained short-circuit, valley current fails to fall below threshold, triggering hiccup mode-device stops switching for ~10ms, then retries. This limits average fault current to <100mA and die temperature to safe levels.
Is the PG signal active-high or open-drain, and what external components are needed?
PG is an open-drain output requiring an external pull-up resistor (typically 10kΩ to 3.3V or 5V). It asserts low when output voltage drops below 0.78×VFB and releases high when voltage rises above 0.83×VFB, with programmable delay (40–160μs) to reject brief transients-enabling reliable power sequencing in multi-rail systems.
MPM3515GQVE-AEC1-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 17-PowerLQFN Module
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4V
- Voltage - Input (Max):
- 36V
- Voltage - Output 1:
- 0.8 ~ 30V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 1.5A
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- OCP, OTP, UVLO
- Operating Temperature:
- -40°C ~ 125°C
- Efficiency:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 17-QFN (3x5)
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
MPM3515GQVE-AEC1-P FAQ
1.How can I place an order for MPM3515GQVE-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPM3515GQVE-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 MPM3515GQVE-AEC1-P reliable?
The price and inventory of MPM3515GQVE-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 MPM3515GQVE-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPM3515GQVE-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPM3515GQVE-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPM3515GQVE-AEC1-P?
MPM3515GQVE-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPM3515GQVE-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 MPM3515GQVE-AEC1-P?
For technical support, including MPM3515GQVE-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPM3515GQVE-AEC1-P requirements.
6.How does Aetrix verify that MPM3515GQVE-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPM3515GQVE-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 MPM3515GQVE-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPM3515GQVE-AEC1-P?
All MPM3515GQVE-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPM3515GQVE-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 MPM3515GQVE-AEC1-P part is unused and in its original packaging.
Return procedure for MPM3515GQVE-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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