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Monolithic Power Systems Inc. MP4245GVE-0000-Z
- Part No.:
- MP4245GVE-0000-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Special Purpose Regulators
- Package:
- 21-PowerVFQFN
- Datasheet:
-
MP4245GVE-0000-Z.pdf
- Description:
- 36V, 6A PEAK, BUCK-BOOST CONVERT
- Quantity:
- Payment:
- Shipping:
Inventory:3,022
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Product details
Overview
MP4245GVE-0000-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 PD applications.
For engineers reviewing the MP4245GVE-0000-Z datasheet, MP4245GVE-0000-Z pinout, MP4245GVE-0000-Z application, or MP4245GVE-0000-Z equivalent, this device serves as a programmable, high-efficiency buck-boost controller for USB Type-C PD ports, 12V bus supplies, and wireless charging systems requiring dynamic voltage scaling and real-time telemetry via I²C.
Technical Context
The MP4245 implements a synchronous four-switch buck-boost architecture with fixed-frequency PWM control and seamless mode transitions between buck, boost, and buck-boost regions. Its internal error amplifier compares FB voltage against programmable reference scales (0.092–1.600V), enabling precise output voltage regulation across 1V–23V.
It integrates dual bootstrap drivers (BST1/BST2), a 5V VCC LDO, a 5.75–6.25V adjustable DRV LDO, and full PMBus-compatible I²C registers for configuring PFM/PWM mode, current limit, frequency spread spectrum, line drop compensation, and alert thresholds - all stored in on-chip MTP memory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 36V - supports wide-input industrial, automotive, and USB PD source applications without external pre-regulation. |
| Output Voltage Range | 1V to 23V - programmable via FB resistor divider and I²C register, enabling single-device support for 5V/9V/15V/20V USB PD profiles. |
| Peak Output Current | 6A - delivered with integrated 12/24/14/14 mΩ RDS(ON) switches (A/B/C/D), enabling 60W operation at high efficiency. |
| Switching Frequency | 250/350/420 kHz (selectable) or external SYNC - allows EMI optimization and compatibility with standard magnetics. |
| I²C Interface | PMBus v1.3 compatible - enables real-time readback of VOUT, IOUT, temperature, fault status, and programmable configuration of CC limit, OVP, and spread spectrum. |
| Protection Features | OVP (116–126% VOUT), thermal shutdown (160°C), constant-current limiting, and load-shedding alert - ensures robust operation under fault conditions. |
| Package | QFN-21 (4mm × 5mm) with wettable flanks - supports automated optical inspection (AOI) and high-density PCB layouts. |
Pinout & Package
MP4245GVE-0000-Z is housed in a thermally enhanced QFN-21 (4mm × 5mm) package with wettable flanks for reliable solder joint inspection. The exposed thermal pad (Pin 21 PGND) must be soldered to a large copper pour for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN | Main power input | 4V–36V supply rail; connects to drain of high-side switch A and powers internal circuitry - requires low-ESR input capacitor placed adjacent to pin. |
| 2 PGND | Power ground | High-current return path for all MOSFETs and inductor - must be connected to thermal pad and routed with wide copper to minimize noise and voltage drop. |
| 3 OUT | Buck-boost output node | Switching node connecting SW1/SW2 to inductor - forms the main power path for energy transfer in all operating modes. |
| 4 ISENS− / 5 ISENS+ | Differential current sense inputs | Measure voltage across external 20mΩ sense resistor to enable accurate ±5% constant-current regulation for USB PD CC mode. |
| 6 SDA / 7 SCL | I²C bidirectional data/clock | Supports 400–1000 kHz PMBus communication; SDA includes open-drain driver and CRC integrity check for MTP writes. |
| 8 ALT | Alert output | Open-drain PMBus alert signal (active-low) indicating OVP, UVLO, thermal fault, or CC limit - requires 10kΩ pull-up. |
| 9 ADD | I²C address selection | Internal 20µA current source enables 8 unique slave addresses (61h–67h) via external resistor to GND - avoids bus conflicts in multi-device systems. |
| 10 GATE | External MOSFET driver | 5.5–6.5V gate drive output supporting external high-side FETs - decoupled by 1µF capacitor for stable turn-on/turn-off. |
| 11 BST2 / 14 BST1 | Bootstrap supplies | Provide floating gate drive voltage for high-side switches SW2/SW1 using 220nF capacitors tied to SW2/SW1 nodes. |
| 12 SW2 / 13 SW1 | Switch node outputs | Connect to inductor and bootstrap capacitors; require wide PCB traces to handle peak 6A currents and minimize parasitic inductance. |
| 15 VCC | Internal 5V LDO output | Supplies internal logic and analog circuits; requires 1µF ceramic decoupling capacitor near pin to suppress switching noise. |
| 16 AGND | Analog ground reference | Separate ground for FB, ISENS, and reference circuits - must tie to PGND at single point near VCC capacitor to avoid noise coupling. |
| 17 FREQ | Frequency select | Logic-level pin: GND = 250kHz, float = 350kHz, VCC = 420kHz - enables EMI tuning without external components. |
| 18 DRV | Adjustable LDO output | 5.75–6.25V, 1mA-capable supply for external biasing - starts simultaneously with VCC and requires local 1µF decoupling. |
| 19 SYNCI | External clock input | Accepts 250/350/420kHz sync signal to align switching with system clock - recommended to tie to GND if unused. |
| 20 EN | Enable control | Active-high logic input with 2MΩ internal pull-down; rising threshold at 1.6V enables soft-start and shutdown sequencing. |
| 21 FB | Voltage feedback input | Compares divided VOUT against programmable reference (0.092–1.600V); sets output voltage via external resistor divider (e.g., 90.9kΩ/6.2kΩ for 5V). |
Key Features
| Feature | Design Value |
|---|---|
| Four-switch buck-boost topology | Enables continuous regulation from VIN < VOUT to VIN > VOUT without mode discontinuity or output glitches. |
| I²C + MTP memory | Allows field-programmable configuration of output voltage, current limit, frequency, and protection thresholds - eliminates BOM changes for design variants. |
| Selectible spread-spectrum modulation | Reduces peak EMI by ±12% frequency dithering - simplifies compliance testing for Class B emissions without added filtering. |
| Line drop compensation | Actively adjusts output voltage based on load current to maintain tight regulation at remote loads - critical for long-cable USB PD applications. |
| Accurate constant-current limit | ±5% tolerance over -40°C to +125°C - ensures reliable USB PD contract negotiation and battery charging safety. |
| Load-shedding alert | Asserts ALT pin during CC or CV transition to signal host controller - enables coordinated power management in multi-rail systems. |
Applications
| USB Type-C PD Charging Port | 12V Industrial Bus Supply |
|---|---|
|
Use Scenario: Single-port USB PD sink implementing 5V/9V/15V/20V profiles with programmable current limits up to 3A. IC Role / Device Role / Timing Role: Primary buck-boost regulator controlling VOUT and IOUT via I²C commands from USB PD controller (e.g., CYPD3177). Use Value: Eliminates need for discrete buck + boost stages; achieves >92% efficiency at 3A/9V with minimal external components. |
Use Scenario: Stable 12V rail generation from variable 9–36V input in factory automation controllers or PoE-powered edge devices. IC Role / Device Role / Timing Role: Main DC-DC converter delivering regulated 12V at up to 6A peak, with line drop compensation for long PCB traces. Use Value: Maintains ±1% output regulation across 0–6A load step while rejecting input transients up to ±10V. |
| Wireless Charging Transmitter | Multi-Output Programmable Power Supply |
|
Use Scenario: Adjustable 5–15V output stage powering resonant inverter in Qi-compliant 15W wireless charging pads. IC Role / Device Role / Timing Role: Buck-boost front-end regulating coil driver voltage; dynamically adjusted via I²C during foreign object detection (FOD) and power ramping. Use Value: Enables real-time VOUT adjustment within 10ms to optimize coil efficiency and thermal performance across load conditions. |
Use Scenario: Lab-grade bench supply with digitally controlled VOUT/IOUT limits, voltage ramping, and fault logging via USB-I²C bridge. IC Role / Device Role / Timing Role: Core programmable regulator with MTP-stored calibration coefficients and PMBus telemetry for remote monitoring. Use Value: Supports 16-step VOUT programming (1V–23V) and 12-bit current limit resolution - replaces multiple fixed-output ICs. |
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-0000-Z | Successor device with improved efficiency (up to 95%), lower quiescent current (300μA vs. 30μA shutdown), and extended thermal shutdown (165°C vs. 160°C). | Pin-compatible and register-mapped replacement; supports same USB PD profiles but with tighter output ripple (<20mVpp at 3A). | Select MP4235 for new designs requiring longer lifetime, lower standby power, or higher reliability in thermally constrained enclosures. |
| TPS63802DLAR | TI part with 2.5V–16V input, 1.8V–12V output, 4A max, no I²C interface; uses proprietary hybrid buck-boost control. | Lacks PMBus telemetry and programmable protections - suitable only for fixed-output, cost-sensitive applications without host microcontroller coordination. | Choose TPS63802 only when I²C configurability is unnecessary and input range is strictly ≤16V. |
Compared with MP4245GVE-0000-Z, MP4235GVE-0000-Z offers measurable improvements in efficiency and thermal margin while maintaining full software compatibility, whereas TPS63802DLAR trades digital control for lower BOM cost and simpler layout - making it viable only in non-PD, fixed-voltage use cases.
Availability
MP4245GVE-0000-Z is available at Aetrix Electronics and suitable for USB Type-C PD charging ports, 12V industrial bus supplies, and wireless charging transmitters requiring stable component supply and legacy design support.
Supply support for MP4245GVE-0000-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 two decades of expertise in DC-DC conversion, motor drivers, and LED lighting solutions.
The MP4245 belongs to MPS's USB Power Delivery and programmable buck-boost product line, designed specifically for applications demanding dynamic voltage/current control, real-time telemetry, and robust fault handling in compact form factors.
FAQ
Is MP4245GVE-0000-Z recommended for new designs?
No - Monolithic Power Systems explicitly states "NOT RECOMMENDED FOR NEW DESIGNS, REFER TO MP4235" in the official datasheet. MP4245 remains supported for existing production and legacy refreshes, but MP4235 offers superior efficiency, lower quiescent current, and extended thermal protection for new projects.
What is the function of the ADD pin?
The ADD pin sets the I²C slave address via an external resistor to GND, enabling eight unique addresses (61h–67h) using an internal 20µA current source. This allows multiple MP4245 devices on the same bus without address conflict - essential for multi-port USB PD hubs or modular power systems.
How does line drop compensation work on MP4245GVE-0000-Z?
Line drop compensation measures output current via the ISENS+/- pins and adds a proportional voltage offset to the FB reference, increasing VOUT to counteract IR drop across PCB traces or cables. This maintains ±1% regulation at the load point - critical for USB PD applications with >10cm cable lengths.
Can MP4245GVE-0000-Z operate in forced PWM mode?
Yes - the device supports both PFM (for light-load efficiency) and forced PWM (for consistent frequency and reduced output ripple) modes, configurable via I²C register. Forced PWM eliminates low-frequency beat notes and improves transient response predictability in noise-sensitive applications like audio or RF subsystems.
What is the purpose of the ALT pin?
The ALT pin is an open-drain PMBus alert output that asserts low during faults including output over-voltage, input under-voltage, thermal shutdown, or constant-current limit activation. It provides immediate hardware-level notification to the host controller, enabling fast system-level fault containment and recovery.
Does MP4245GVE-0000-Z support spread-spectrum frequency modulation?
Yes - spread-spectrum modulation is enabled via I²C register and dithers the switching frequency by ±12% around the selected center frequency (250/350/420kHz). This reduces peak EMI amplitude by up to 10dB, easing compliance with CISPR 32 Class B radiated emission limits without additional shielding or filtering.
What is the maximum output power achievable with MP4245GVE-0000-Z?
The device delivers up to 60W output power (e.g., 20V × 3A or 5V × 6A) under optimized thermal conditions - verified on the EV4245-VE-00A evaluation board with 4-layer PCB and 55mm × 55mm copper area. Actual power is limited by junction temperature (125°C max continuous) and PCB thermal design.
MP4245GVE-0000-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-0000-Z FAQ
1.How can I place an order for MP4245GVE-0000-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP4245GVE-0000-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-0000-Z reliable?
The price and inventory of MP4245GVE-0000-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-0000-Z is usually 5 days.
3.What payment methods are accepted for MP4245GVE-0000-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP4245GVE-0000-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP4245GVE-0000-Z?
MP4245GVE-0000-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP4245GVE-0000-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-0000-Z?
For technical support, including MP4245GVE-0000-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP4245GVE-0000-Z requirements.
6.How does Aetrix verify that MP4245GVE-0000-Z is sourced from the original manufacturer or authorized distributors?
All MP4245GVE-0000-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-0000-Z meets industry standards.
7.What is the process for return or replacement of MP4245GVE-0000-Z?
All MP4245GVE-0000-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP4245GVE-0000-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-0000-Z part is unused and in its original packaging.
Return procedure for MP4245GVE-0000-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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