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Monolithic Power Systems Inc. MPM38222GR-P
- Part No.:
- MPM38222GR-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 14-PowerLFQFN Module
- Datasheet:
-
MPM38222GR-P.pdf
- Description:
- DC DC CONVERTER 1.8V 1.2V
- Quantity:
- Payment:
- Shipping:
Inventory:4,444
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Product details
Overview
MPM38222GR-P from Monolithic Power Systems is a dual-channel, synchronous step-down power module integrating two 2A DC/DC converters, internal MOSFETs (80mΩ high-side / 35mΩ synchronous rectifier), and integrated inductors in a single QFN-14 package. It operates from 2.7V–6V input, delivers output as low as 0.608V per channel, and achieves >93% peak efficiency - optimized for space-constrained, battery-powered systems such as optical modules and IoT edge nodes.
For engineers reviewing the MPM38222GR-P datasheet, MPM38222GR-P pinout, MPM38222GR-P application, or MPM38222GR-P equivalent, key selection criteria include dual-channel phase-shifted operation, ultra-low 45μA quiescent current, integrated inductor simplification, and thermal shutdown with hiccup-mode short-circuit protection.
Technical Context
The MPM38222GR-P implements peak-current-mode control with internal compensation per channel, enabling fast transient response without external loop components. Each channel features independent enable (EN1/EN2), feedback (FB1/FB2), and switch-node (SW1/SW2) terminals, supporting asynchronous or 180° phase-shifted operation to reduce input ripple.
It supports 100% duty cycle for low-dropout operation and transitions automatically between PWM, fixed-off-time, and DCM modes based on load and VIN–VOUT differential. Protection includes cycle-by-cycle over-current limit, thermal shutdown at 160°C (30°C hysteresis), and hiccup-mode recovery during sustained short circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 6V - supports single-cell Li+ battery (3.0–4.2V) and USB-powered systems without pre-regulation. |
| Output Voltage Range | 0.608V to VIN - enables core voltage regulation for modern SoCs, FPGAs, and RF ICs. |
| Max Output Current | 2A per channel - sufficient for dual-rail processor cores or parallel sensor subsystems. |
| Switching Frequency | 1MHz nominal (±20%) - balances EMI, size, and efficiency; drops to fixed-off-time mode under low dropout. |
| Quiescent Current | 45μA - extends battery runtime in always-on IoT endpoints and medical wearables. |
| Peak Efficiency | >93% - achieved via integrated 80mΩ P-FET and 35mΩ N-FET switches, eliminating external Schottky losses. |
| Thermal Shutdown | 160°C with 30°C hysteresis - protects against sustained overload while allowing safe recovery after cooling. |
Pinout & Package
MPM38222GR-P is housed in a thermally enhanced, surface-mount QFN-14 package (4mm × 4mm × 1.6mm) with exposed thermal pad. The package supports high-power density and efficient PCB heat dissipation via the bottom paddle.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 14 | GND | Power ground return path for both channels; must be connected to low-impedance PCB ground plane. |
| 3 | EN1 | Active-high enable for Channel 1; logic threshold 1.2V min, 0.4V max - compatible with 1.8V/3.3V GPIO. |
| 4 | SW1 | Channel 1 switch node - connects internally to high-side and low-side MOSFETs and integrated inductor. |
| 5, 6 | OUT1 | Channel 1 regulated power output - dual pins reduce IR drop and improve current sharing. |
| 7, 8 | OUT2 | Channel 2 regulated power output - independent of OUT1; supports asymmetric rail configurations. |
| 9 | SW2 | Channel 2 switch node - electrically isolated from SW1; enables independent layout routing. |
| 10 | EN2 | Active-high enable for Channel 2 - allows staggered startup or independent channel control. |
| 11 | FB2 | Channel 2 feedback input - sets VOUT2 via external resistor divider; reference voltage = 0.608V ±3%. |
| 12 | FB1 | Channel 1 feedback input - sets VOUT1 independently; enables dual-output tracking or split-rail generation. |
| 13 | VIN | Main input supply - requires local 22μF ceramic decoupling capacitor to suppress switching noise. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 2A outputs with 180° phase shift | Reduces input RMS current by ~30%, enabling smaller input capacitors and lower EMI. |
| Integrated inductors (1μH each) | Eliminates external magnetics, saves >25mm² board area, and ensures consistent saturation current (3.3A). |
| Ultra-low 45μA quiescent current | Extends standby time in battery-backed applications - e.g., BLE sensors drawing <10μA average. |
| 100% duty cycle capability | Maintains regulation down to VIN – VOUT ≈ 0V, critical for Li+ battery end-of-discharge operation. |
| Hiccup-mode short-circuit protection | Limits average fault current to <100mA during sustained shorts, preventing thermal runaway. |
Applications
| Optical Transceivers | Industrial Edge Controllers |
|---|---|
Use Scenario: Dual-rail power for SFP+ or QSFP modules requiring independent 3.3V bias and 1.2V DSP core rails. IC Role / Device Role / Timing Role: Dual-channel DC/DC regulator providing isolated, low-noise, phase-shifted power with fast load-step response. Use Value: Integrated inductors eliminate magnetic coupling between rails; 180° phase shift cuts input ripple, easing compliance with Class B EMI limits. |
Use Scenario: Compact programmable logic controller (PLC) I/O module needing 5V analog sensing and 1.8V FPGA core power from 24V bus via intermediate 5V rail. IC Role / Device Role / Timing Role: Secondary-stage dual-buck module replacing discrete regulators and LDOs in space-limited DIN-rail enclosures. Use Value: >80% light-load efficiency maintains thermal stability during intermittent I/O polling; thermal shutdown prevents field failure in unventilated cabinets. |
| Medical Wearables | Smart Sensor Nodes |
Use Scenario: ECG patch with ultra-low-power MCU (1.1V), Bluetooth radio (1.8V), and analog front-end (3.3V) powered from coin cell or thin-film battery. IC Role / Device Role / Timing Role: Primary power management IC delivering three precision rails with minimal external components and sub-50μA quiescent draw. Use Value: 45μA IQ extends battery life beyond 7 days in continuous monitoring mode; integrated inductors prevent vibration-induced coil microphonics. |
Use Scenario: Battery-operated environmental sensor node (temperature/humidity/pressure) transmitting via LoRaWAN with burst-mode operation. IC Role / Device Role / Timing Role: Dual-output buck converter powering 3.3V MCU/radio and 1.2V sensor interface ASIC from single Li+ cell. Use Value: Phase-shifted operation minimizes input capacitor size (22μF ceramic suffices); DCM mode at sleep current (<100μA) reduces no-load loss by >60% vs. standard PWM. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel synchronous buck module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS84250RMLR | Single 2.5A output, no dual-channel capability; requires external inductors; higher IQ (100μA). | Not suitable for independent dual-rail designs; better for higher-current single-rail systems with layout flexibility. | Select only when needing >2A per rail and willing to manage two separate inductors and feedback networks. |
| RTQ2132BGQW | 2A dual-channel, but uses external inductors; 65μA IQ; no 100% duty cycle; 2.5V–6V input range. | Lacks integrated inductors and low-VIN support - unsuitable for single-cell Li+ systems below 2.7V. | Prefer when cost sensitivity outweighs board area constraints and input voltage stays ≥2.5V. |
Compared with TPS84250RMLR and RTQ2132BGQW, the MPM38222GR-P uniquely combines dual 2A outputs, integrated inductors, sub-2.7V operation, and 45μA IQ - making it the only option for compact, battery-first dual-rail designs where layout area and standby power are critical.
Availability
MPM38222GR-P is available at Aetrix Electronics and suitable for optical transceivers, industrial edge controllers, and medical wearables requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MPM38222GR-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 across Asia and North America.
The MPM38222 belongs to MPS's integrated power module product line, engineered specifically for space- and efficiency-critical applications where traditional discrete buck solutions fail to meet size, thermal, or BOM count targets.
FAQ
What is the minimum input voltage required for full 2A operation per channel?
The MPM38222GR-P sustains 2A per channel down to 2.7V input across its full operating temperature range (–40°C to +125°C). Below 2.7V, UVLO disables operation; the 2.4V to 2.65V rising-edge threshold ensures reliable startup from partially discharged Li+ cells.
Can the two channels be configured for different output voltages?
Yes - FB1 and FB2 are fully independent inputs, each referenced to the same 0.608V internal bandgap. Using separate resistor dividers (e.g., 1.8V on Channel 1, 1.2V on Channel 2), designers achieve asymmetric dual-rail outputs without cross-regulation issues or additional ICs.
Does the MPM38222GR-P require external compensation components?
No - peak-current-mode control with internal compensation eliminates the need for external Type-II or Type-III compensation networks. Loop bandwidth is set automatically via internal slope compensation and oscillator frequency, simplifying layout and validation.
How does the 180° phase shift affect thermal performance?
The 180° phase shift reduces input capacitor RMS current by up to 30%, lowering self-heating in the input bulk capacitor and associated traces. This indirectly improves overall thermal margin by reducing localized heating near the module's VIN/GND nodes.
Is the exposed thermal pad electrically connected to GND?
Yes - the exposed paddle is internally tied to GND and must be soldered to a solid thermal pad on the PCB. Thermal resistance θJC is 9°C/W; omitting thermal vias or undersized copper will cause junction temperature to exceed 125°C at full 2A load per channel.
What happens during a short-circuit event on one channel?
Only the affected channel enters hiccup mode - cycling on/off with ~100ms period - while the other channel continues normal regulation. This fault isolation preserves system functionality (e.g., keeping MCU alive while radio rail recovers) and avoids cascading failures.
Can the soft-start time be adjusted externally?
No - the 0.5ms internal soft-start is fixed and non-programmable. It provides controlled slew rate for both channels simultaneously, preventing output overshoot and inrush current spikes during power-up without requiring external timing components.
MPM38222GR-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 14-PowerLFQFN Module
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 6V
- Voltage - Output 1:
- 1.8V
- Voltage - Output 2:
- 1.2V
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 2A, 2A
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Efficiency:
- 93%
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-QFN (4x4)
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
MPM38222GR-P FAQ
1.How can I place an order for MPM38222GR-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPM38222GR-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 MPM38222GR-P reliable?
The price and inventory of MPM38222GR-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPM38222GR-P is usually 5 days.
3.What payment methods are accepted for MPM38222GR-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPM38222GR-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPM38222GR-P?
MPM38222GR-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPM38222GR-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 MPM38222GR-P?
For technical support, including MPM38222GR-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPM38222GR-P requirements.
6.How does Aetrix verify that MPM38222GR-P is sourced from the original manufacturer or authorized distributors?
All MPM38222GR-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 MPM38222GR-P meets industry standards.
7.What is the process for return or replacement of MPM38222GR-P?
All MPM38222GR-P units undergo pre-shipment inspection (PSI). If there is an issue with MPM38222GR-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 MPM38222GR-P part is unused and in its original packaging.
Return procedure for MPM38222GR-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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