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Monolithic Power Systems Inc. MP4245GVE-0001-Z
- Part No.:
- MP4245GVE-0001-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Special Purpose Regulators
- Package:
- 21-PowerVFQFN
- Datasheet:
-
MP4245GVE-0001-Z.pdf
- Description:
- 36V, 6A PEAK, BUCK-BOOST CONVERT
- Quantity:
- Payment:
- Shipping:
Inventory:3,855
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Product details
Overview
MP4245GVE-0001-Z from Monolithic Power Systems is a 36V, 6A peak buck-boost DC/DC converter with integrated four-switch topology, I²C/PMBus interface, and two-time programmable (MTP) memory. It delivers up to 60W output power across 4V–36V input and 1V–23V output ranges, supports selectable 250/350/420kHz switching frequencies, and features accurate constant-current limiting for USB Power Delivery (USB PD) charging ports.
For engineers reviewing the MP4245GVE-0001-Z datasheet, MP4245GVE-0001-Z pinout, MP4245GVE-0001-Z application, or MP4245GVE-0001-Z equivalent, this device is intended for USB Type-C PD source applications requiring programmable voltage/current regulation, real-time telemetry via I²C, and robust fault protection including OVP, thermal shutdown, and CC limiting - not recommended for new designs per MPS documentation.
Technical Context
The MP4245 implements a synchronous four-switch buck-boost topology with internal high- and low-side MOSFETs (RDS(ON) = 12/24/14/14 mΩ), enabling seamless transition between buck, boost, and buck-boost modes without external mode control. Its fixed-frequency PWM control loop integrates line-drop compensation and supports external frequency synchronization via SYNCI pin.
Operation is managed through an I²C/PMBus-compliant interface that configures output voltage, current limit, switching frequency, spread spectrum, and enables CRC-protected MTP register writes. The device uses dual feedback paths - one for CV regulation (FB pin) and another for CC regulation (ISENS+/ISENS−) - with independent thresholds and recovery behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 36V - supports wide-input industrial and automotive bus supplies, including 12V/24V systems and USB PD input rails. |
| Output Voltage Range | 1V to 23V - programmable via FB resistor divider; enables USB PD 5V/9V/15V/20V profiles without external DAC. |
| Peak Output Current | 6A - delivered in buck-boost mode under optimal thermal conditions; limited by internal CC circuitry and RSENSE value. |
| Switching Frequency | 250/350/420 kHz (selectable) or externally synchronized - balances EMI, efficiency, and inductor size for compact USB PD adapters. |
| RDS(ON) (SW A/B/C/D) | 12/24/14/14 mΩ - low conduction loss enables >92% efficiency at 5V/3A, 12V input, reducing thermal stress on QFN-21 package. |
| I²C Interface | PMBus-compatible (HS mode, 400–1000 kHz) - allows dynamic reconfiguration of VOUT, IOUT limit, frequency, and fault response during operation. |
| Protection Features | OVP (116–126% VOUT), thermal shutdown (160°C), CC limiting, UVLO (3.3V), and load-shedding alert - ensures safe operation in unattended USB PD sink negotiation. |
Pinout & Package
MP4245GVE-0001-Z is housed in a wettable-flank QFN-21 (4mm × 5mm) package optimized for automated optical inspection (AOI) and thermal performance (θJA = 44°C/W). The exposed thermal pad must be soldered to a dedicated PCB copper pour for reliable 6A peak operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN | Main power input | 4V–36V supply rail; connects to drain of internal high-side switch A; requires local 100µF ceramic input capacitor. |
| 2 PGND | Power ground return | High-current return path for all switches; must be connected via multiple vias to inner-layer ground plane to minimize noise coupling. |
| 4/5 ISENS−/ISENS+ | Current-sense differential input | Measures voltage across external 20mΩ sense resistor to enable precise 1A–20A CC regulation; referenced to PGND and USB port GND. |
| 6 SDA / 7 SCL | I²C bidirectional data/clock | Supports PMBus commands for real-time VOUT/IOUT/frequency adjustment; requires 10kΩ pull-up to 3.3V or 5V. |
| 8 ALT | Open-drain alert output | Asserts low on OVP, UVP, thermal fault, or CC limit breach; used for system-level fault signaling without polling. |
| 9 ADD | I²C slave address selection | Voltage-divided input sets one of eight I²C addresses (61h–67h); enables multi-device bus configuration on shared PD controller lines. |
| 17 FREQ | Frequency select | Logic level determines switching frequency: GND = 250kHz, float = 350kHz, VCC = 420kHz - impacts EMI profile and inductor selection. |
| 20 EN | Enable control | Active-high logic input with 2MΩ internal pull-down; enables full converter operation when ≥1.6V applied; supports sequencing with host PD controller. |
| 21 FB | Feedback reference input | Connects to resistor divider tap from VOUT; sets output voltage via VFB = 0.100V (scale factor 0.08); enables tight CV regulation ±1.5%. |
Key Features
| Feature | Design Value |
|---|---|
| Four-switch buck-boost topology | Enables continuous regulation across VIN < VOUT, VIN > VOUT, and VIN ≈ VOUT without mode-hopping artifacts or output glitches. |
| I²C/PMBus + MTP memory | Allows field-updatable configuration (VOUT, IOUT limit, frequency spread spectrum) with CRC-verified writes - eliminates hardware revisions for PD profile changes. |
| Programmable constant-current limit | Configurable 1A–20A CC threshold via I²C; uses dedicated ISENS+/- inputs with 20mV–420mV detection range - critical for USB PD compliance testing. |
| Line drop compensation | Adjusts output voltage in real time based on output current to counteract cable IR drop - maintains target VOUT at remote USB connector. |
| Load-shedding alert | Dedicated ALT pin signals impending shutdown due to thermal overload or OVP, enabling host controller to gracefully disconnect loads before fault escalation. |
Applications
| USB Type-C PD Charging Port | 12V Bus Voltage Supply |
|---|---|
|
Use Scenario: Single-port USB PD source in portable power banks or docking stations delivering 5V/3A, 9V/3A, or 15V/3A. IC Role / Device Role / Timing Role: Primary buck-boost regulator managing VBUS voltage and current negotiation with USB PD controller (e.g., Cypress CCGx). Use Value: Eliminates need for discrete buck + boost stages; supports dynamic PDO switching via I²C while maintaining ±1.5% VOUT accuracy and fast transient response. |
Use Scenario: Industrial 12V rail generator from variable input (e.g., 8–32V battery or PoE-derived supply). IC Role / Device Role / Timing Role: Wide-input buck-boost regulator stabilizing 12V output for MCU, sensors, and communication ICs under load transients. Use Value: Maintains regulation during brownouts (down to 4V VIN) and overvoltage events (up to 36V), with thermal foldback preventing shutdown during sustained 6A loads. |
| Wireless Charging Transmitter | Automotive Accessory Power Module |
|
Use Scenario: 15W Qi transmitter supplying regulated 12V/1.25A to power amplifier and coil driver stage. IC Role / Device Role / Timing Role: Intermediate bus converter stepping down car battery (9–16V) to stable 12V for RF power stage. Use Value: Low-noise 420kHz operation minimizes interference with 110–205kHz Qi carrier; wettable-flank QFN ensures reliability in thermally constrained enclosures. |
Use Scenario: USB-C power delivery module in vehicle infotainment head units supporting smartphone fast charging. IC Role / Device Role / Timing Role: USB PD source IC interfacing with automotive-grade PD controller and handling load dump transients. Use Value: Withstands 40V load dump pulses (VIN absolute max), provides OVP recovery within 50ms, and supports CAN-linked fault reporting via ALT pin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP4235GVE-0001-Z | Successor device with improved efficiency (up to 95%), lower quiescent current (300μA vs. 30μA shutdown), and enhanced thermal performance (θJA = 38°C/W). | Pin-to-pin compatible but requires updated firmware for I²C register mapping; supports same USB PD profiles with tighter CC tolerance (±3% vs. ±5%). | Select MP4235 for new designs requiring longer battery life, higher power density, or AEC-Q100 qualification support. |
| TPS63802DRLR | TI buck-boost with 2.5V–12V input, 1.8V–5.5V output, 4A max, no I²C interface; relies on external resistors for configuration. | Lacks programmable CC limit and real-time telemetry; suitable only for fixed-output, non-PD applications like portable medical devices. | Choose TPS63802 only if USB PD compliance, dynamic voltage scaling, or bus-based fault monitoring are not required. |
Compared with MP4245GVE-0001-Z, MP4235 offers measurable improvements in thermal resistance and light-load efficiency but requires firmware adaptation, while TPS63802 sacrifices configurability and USB PD readiness for cost-sensitive, fixed-rail use cases.
Availability
MP4245GVE-0001-Z is available at Aetrix Electronics and suitable for USB PD charging ports, 12V industrial bus supplies, wireless charging transmitters, and automotive accessory modules requiring stable component supply and legacy design continuity.
Supply support for MP4245GVE-0001-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 over 20 years of expertise in DC/DC conversion, motor drivers, and LED controllers.
The MP4245 belongs to MPS's USB Power Delivery product line, designed specifically for compact, software-configurable, high-efficiency buck-boost converters targeting USB-C ecosystems - though superseded by MP4235 for new designs.
FAQ
Is MP4245GVE-0001-Z pin-compatible with MP4235GVE-0001-Z?
Yes, MP4245GVE-0001-Z and MP4235GVE-0001-Z share identical QFN-21 (4mm×5mm) pinout and footprint. However, register maps differ - firmware must be updated to accommodate revised I²C command structure and default MTP settings for proper initialization.
What is the purpose of the ADD pin, and how is it configured?
The ADD pin sets the I²C slave address by reading a voltage divider connected to ground. Eight addresses (61h–67h) are supported using resistor values from 0Ω to VCC; for example, 15kΩ yields address 62h. An internal 20μA current source ensures stable ADC-based decoding at startup.
Does MP4245GVE-0001-Z support USB PD 3.0 Programmable Power Supply (PPS)?
No - MP4245GVE-0001-Z supports fixed PDO profiles (5V/9V/15V/20V) but lacks the sub-20mV voltage step resolution and 10ms response time required for PPS. It is compliant with USB PD 2.0 and earlier specifications only.
How does the line drop compensation feature function in practice?
Line drop compensation adjusts the FB reference voltage in real time based on sensed output current, counteracting voltage loss across cables. When enabled via I²C, it adds a programmable offset (e.g., +50mV/A) to maintain target VOUT at the load connector rather than at the IC's output pin.
What is the maximum allowable output capacitance for stable operation?
The MP4245GVE-0001-Z supports up to 1000μF total output capacitance with standard ceramic or polymer types. Exceeding this may degrade phase margin; stability is verified with 100μF + 4.7μF parallel configuration per typical application circuit on EV4245-VE-00A.
Can the MP4245 operate without an external USB PD controller?
Yes - it can function as a standalone buck-boost regulator using fixed resistor feedback (FB pin) and hardwired current limit (ISENS resistor), but I²C programmability, dynamic PDO switching, and PMBus telemetry require an external PD controller such as Cypress CCG3PA or STUSB4500.
Why is MP4245GVE-0001-Z marked "Not Recommended for New Designs"?
MPS issued this designation because MP4235 offers superior efficiency, lower thermal resistance, enhanced ESD robustness (±4kV HBM), and extended lifetime support. MP4245 remains fully qualified and available for existing designs but receives no further roadmap investment or derivative variants.
MP4245GVE-0001-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:
- 1
- Voltage - Output:
- 1V ~ 23V
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 21-QFN (4x5)
MP4245GVE-0001-Z FAQ
1.How can I place an order for MP4245GVE-0001-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP4245GVE-0001-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 MP4245GVE-0001-Z reliable?
The price and inventory of MP4245GVE-0001-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP4245GVE-0001-Z is usually 5 days.
3.What payment methods are accepted for MP4245GVE-0001-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP4245GVE-0001-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP4245GVE-0001-Z?
MP4245GVE-0001-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP4245GVE-0001-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 MP4245GVE-0001-Z?
For technical support, including MP4245GVE-0001-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP4245GVE-0001-Z requirements.
6.How does Aetrix verify that MP4245GVE-0001-Z is sourced from the original manufacturer or authorized distributors?
All MP4245GVE-0001-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 MP4245GVE-0001-Z meets industry standards.
7.What is the process for return or replacement of MP4245GVE-0001-Z?
All MP4245GVE-0001-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP4245GVE-0001-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 MP4245GVE-0001-Z part is unused and in its original packaging.
Return procedure for MP4245GVE-0001-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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