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Monolithic Power Systems Inc. MPM4730GPQ-0000-P
- Part No.:
- MPM4730GPQ-0000-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 18-PowerFCLGA Module
- Datasheet:
-
MPM4730GPQ-0000-P.pdf
- Description:
- 2.8V TO 22V VIN, MAX 1A, 4-SWITC
- Quantity:
- Payment:
- Shipping:
Inventory:1,042
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Product details
Overview
MPM4730GPQ-0000-P from Monolithic Power Systems is a synchronous 4-switch integrated buck-boost module operating from 2.8V to 22V input, delivering up to 1A output current with I²C-configurable VOUT (1V–20.47V), selectable 500kHz/750kHz switching frequency, and integrated OCP/OVP/UVP/thermal shutdown. It enables stable bus regulation in server PSUs where input voltage may dip below or surge above nominal rail.
For engineers reviewing the MPM4730GPQ-0000-P datasheet, MPM4730GPQ-0000-P pinout, MPM4730GPQ-0000-P application, or MPM4730GPQ-0000-P equivalent, key selection criteria include its ECLGA-18 package footprint, I²C-based dynamic VOUT scaling, buck-boost mode transition behavior at VIN ≈ VOUT, and OTP-programmable protection thresholds for industrial-grade power sequencing.
Technical Context
The MPM4730GPQ-0000-P implements dual-mode control: constant-on-time (COT) in buck mode and constant-off-time (COT) in boost mode, enabling sub-10µs load transient response and seamless mode transitions without output glitches. Its four internal MOSFETs (SW1/SW2/BST1/BST2) are arranged in a single-inductor buck-boost topology with integrated gate drivers and bootstrap regulators.
It integrates an internal 3.65V LDO (VCC), I²C slave interface (up to 3.4MHz), one-time programmable NVM for register configuration, and analog feedback loop with 1V ±1% reference (VFB). The ALT pin provides fault-warnings including over-temperature warning (OTW) and latch-off/hiccup OCP events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.8V to 22V - supports wide-input applications like 12V server rails with brownout tolerance and 24V industrial inputs. |
| VOUT Range | 1V to 20.47V - set via external resistor divider on FB pin or I²C register; enables dynamic voltage scaling for CPU/GPU rails. |
| IOUT Max | 1A continuous - sufficient for point-of-load conversion in mid-power subsystems such as FPGA I/O banks or ASIC auxiliary supplies. |
| fSW Options | 500kHz or 750kHz - selectable via I²C; higher frequency allows smaller magnetics but increases switching loss. |
| Protection | OCP (2A threshold), OVP (150–170% VREF), UVP (45–55% VREF), thermal shutdown (150°C), hiccup-mode SCP - ensures robust operation under fault conditions. |
| Interface | I²C (400kHz–3.4MHz) with ALT alert output - enables real-time telemetry, remote reconfiguration, and system-level fault logging. |
| Package | ECLGA-18 (3mm × 3mm × 1.86mm) - compact thermally enhanced land-grid array suitable for high-density PCB layouts with bottom-side thermal pad. |
Pinout & Package
ECLGA-18 (3mm × 3mm × 1.86mm) package with exposed thermal pad on underside; requires solder paste stencil optimization and 6+ vias to internal ground plane for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 AGND | Analog reference ground | Separate low-noise return path for FB and internal error amplifier; must be star-connected to GND near FB resistor divider. |
| 2,11 GND | Power ground | Main return for high-current paths (SW1/SW2/VOUT); requires wide copper pours and multiple thermal vias to inner layers. |
| 3 VOUT | Regulated output power | High-current output node; place 22µF × 5 ceramic capacitors directly between VOUT and GND for low-ESR filtering. |
| 10 VIN | Main input supply | Accepts 2.8V–22V; requires ≥100µF input capacitance close to pin to suppress ripple and handle inrush during startup. |
| 12 EN | Enable control | Active-high logic input with 2MΩ internal pull-down; enables power sequencing and soft-start coordination with system controller. |
| 13 ALT | Fault alert output | Open-drain active-low signal indicating OCP/OVP/OTW; connects to host microcontroller GPIO for interrupt-driven fault handling. |
| 14 SCL / 15 SDA | I²C interface | Supports hot-plug configuration updates; SCL max 3.4MHz allows fast register writes during boot or runtime voltage scaling. |
| 17 FB | Feedback input | Resistor-divider tap point; sets VOUT = VFB × (1 + R1/R2); VFB = 1V ±1% ensures <±1.5% output accuracy over temperature. |
| 18 VCC | Internal LDO output | 3.65V ±3% regulated supply for internal circuitry; decoupled with 1µF ceramic capacitor to minimize noise coupling into control loop. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 4-switch buck-boost topology | Eliminates need for external MOSFETs, gate drivers, and discrete inductor - reduces BOM count by ≥12 components and layout area by >40%. |
| I²C-configurable VOUT scaling | Enables dynamic voltage adjustment (e.g., 1.2V → 1.35V) without hardware change - critical for adaptive computing and low-power sleep states. |
| Configurable soft-start time | Default 3.5ms, adjustable via I²C - prevents inrush current spikes during cold start and avoids bus droop in multi-rail systems. |
| OTP non-volatile memory | Stores default register settings (fSW, OCP, OVP, MODE) - ensures consistent behavior after power cycle without host firmware intervention. |
| Automatic PFM/PWM mode selection | Switches to pulse-skip mode below ~200mA load - improves light-load efficiency to >85% while maintaining regulation within ±1.5%. |
Applications
| Server PSU Intermediate Bus | Industrial PLC I/O Power |
|---|---|
Use Scenario: Regulating 12V intermediate bus from variable 10–20V DC input in modular server power supplies. IC Role / Device Role / Timing Role: Primary buck-boost regulator providing stable 12V output regardless of input sag or surge; manages mode transitions transparently during line transients. Use Value: Maintains <±1.5% output regulation across full VIN range with <100mV load-step deviation, eliminating need for post-regulator LDOs. |
Use Scenario: Powering isolated digital I/O modules in programmable logic controllers with fluctuating 24V field supply. IC Role / Device Role / Timing Role: Point-of-load converter generating 5V/3.3V rails from noisy 24V bus; uses hiccup-mode SCP to survive shorted sensor outputs. Use Value: Delivers 1A continuous with 92% peak efficiency at 5V/1A, reducing thermal load in sealed enclosures without forced airflow. |
| Automotive Infotainment Core Supply | Test Equipment Adjustable Rail |
Use Scenario: Generating 1.8V core voltage for SoC in automotive infotainment head units powered from 9–16V battery rail. IC Role / Device Role / Timing Role: Buck-boost regulator with I²C-controlled VOUT and OTW alert; supports cold-crank (6.5V) and load-dump (28V) conditions. Use Value: Survives 26V absolute max VIN and shuts down at 150°C junction temp - meets AEC-Q100 stress requirements without derating. |
Use Scenario: Programmable bench power supply channel in automated test equipment requiring precise, software-controlled output voltages. IC Role / Device Role / Timing Role: Digitally configurable DC-DC module with 0.8mV VREF resolution and 16-bit I²C DAC interface. Use Value: Enables 1V–20.47V output in 0.8mV steps via host MCU - replaces discrete DAC + op-amp + linear regulator solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS63020DSJR | Fixed 3.3V/5V VOUT options only; no I²C interface; 2A max IOUT; QFN-16 package. | Lacks dynamic VOUT scaling and telemetry - suitable for cost-sensitive fixed-rail designs without system-level monitoring. | Select when I²C configurability and OTP storage are unnecessary and higher output current is required. |
| LT8337EFE#PBF | External MOSFETs required; 40V max VIN; 1.5A IOUT; no integrated inductor; requires external compensation. | Offers wider VIN range and higher power but increases design complexity, footprint, and component count. | Select when input exceeds 22V or when thermal management demands discrete FETs and custom inductor selection. |
Compared with TPS63020DSJR and LT8337EFE#PBF, the MPM4730GPQ-0000-P uniquely combines I²C programmability, integrated magnetics, and OTP configuration in a 3mm×3mm module - reducing design cycle time for adaptive power architectures while maintaining industrial-grade reliability.
Availability
MPM4730GPQ-0000-P is available at Aetrix Electronics and suitable for server PSUs, industrial PLCs, automotive infotainment systems, and test equipment requiring stable component supply with guaranteed long-term manufacturability.
Supply support for MPM4730GPQ-0000-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, with over 20 years of expertise in DC-DC conversion, motor drivers, and LED lighting controllers.
The MPM4730 belongs to MPS's integrated power module product line, designed specifically for space-constrained, high-efficiency buck-boost applications in datacenter, industrial, and automotive electronics where board area and thermal performance are critical.
FAQ
What is the default VOUT configuration for MPM4730GPQ-0000-P?
The MPM4730GPQ-0000-P ships with factory-default I²C register settings: VREF = 1.000V, fSW = 500kHz, FCCM mode enabled, OCP = 2A, OVP = 160% VREF, and soft-start time = 3.5ms. These values are stored in OTP memory and persist across power cycles unless reprogrammed via I²C.
Can MPM4730GPQ-0000-P operate with VIN = VOUT?
Yes - the device enters buck-boost mode when VIN is within ~20% of VOUT (e.g., VIN = 12V, VOUT = 15V). In this region, it interleaves buck and boost switching within a single cycle to maintain regulation without discontinuity, achieving <±1.5% line/load regulation per datasheet Figure 8.
How does the ALT pin behave during over-temperature warning?
When junction temperature reaches 130°C, the ALT pin asserts low to indicate over-temperature warning (OTW); at 150°C, thermal shutdown triggers and ALT remains low until temperature drops below 130°C hysteresis (110°C), then releases high-Z state after recovery delay.
Is external compensation required for stability?
No - the MPM4730GPQ-0000-P uses internal type-II compensation optimized for its integrated power stage and typical output capacitor values (22µF × 5 ceramic). Stability is guaranteed across 1V–20.47V VOUT with recommended COUT and layout per datasheet Figure 19.
What is the minimum output capacitor requirement?
The datasheet specifies 22µF × 5 (110µF total) X5R/X7R ceramic capacitors at VOUT, placed directly between pins 3 (VOUT) and 2/11 (GND). Lower capacitance risks instability and excessive ripple; aluminum polymer or tantalum alternatives are not validated and may compromise transient response.
Does MPM4730GPQ-0000-P support output discharge?
Yes - the EN pin supports configurable output discharge via I²C register bit EN_DISCHARGE. When enabled and EN is pulled low, the internal 60–100Ω discharge path between VOUT and GND activates, discharging output capacitors within ~10ms (dependent on COUT value).
What happens to I²C registers during a thermal shutdown event?
I²C register contents remain intact during thermal shutdown - only the power stage halts. Registers are reset only upon a full shutdown initiated by pulling EN low for >55ms (with discharge enabled) or after a complete power cycle with VIN removed for >100ms.
MPM4730GPQ-0000-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MPM
- Package/Case:
- 18-PowerFCLGA Module
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.8V
- Voltage - Input (Max):
- 22V
- Voltage - Output 1:
- 15V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 1A
- Power (Watts):
- 15 W
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- Adjustable Output, I2C Interface
- Operating Temperature:
- -40°C ~ 125°C (With Derating)
- Efficiency:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 18-ECLGA (3x3)
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
MPM4730GPQ-0000-P FAQ
1.How can I place an order for MPM4730GPQ-0000-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPM4730GPQ-0000-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 MPM4730GPQ-0000-P reliable?
The price and inventory of MPM4730GPQ-0000-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPM4730GPQ-0000-P is usually 5 days.
3.What payment methods are accepted for MPM4730GPQ-0000-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPM4730GPQ-0000-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPM4730GPQ-0000-P?
MPM4730GPQ-0000-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPM4730GPQ-0000-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 MPM4730GPQ-0000-P?
For technical support, including MPM4730GPQ-0000-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPM4730GPQ-0000-P requirements.
6.How does Aetrix verify that MPM4730GPQ-0000-P is sourced from the original manufacturer or authorized distributors?
All MPM4730GPQ-0000-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 MPM4730GPQ-0000-P meets industry standards.
7.What is the process for return or replacement of MPM4730GPQ-0000-P?
All MPM4730GPQ-0000-P units undergo pre-shipment inspection (PSI). If there is an issue with MPM4730GPQ-0000-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 MPM4730GPQ-0000-P part is unused and in its original packaging.
Return procedure for MPM4730GPQ-0000-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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