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Monolithic Power Systems Inc. MPQ2124GD-AEC1-Z
- Part No.:
- MPQ2124GD-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 11-PowerVFQFN
- Datasheet:
-
MPQ2124GD-AEC1-Z.pdf
- Description:
- IC REG BUCK ADJ 3A 11QFN
- Quantity:
- Payment:
- Shipping:
Inventory:8,600
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Product details
Overview
MPQ2124GD-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, frequency-programmable synchronous buck converter delivering up to 3A continuous output current with 35mΩ/25mΩ integrated high-side and low-side MOSFETs, 0.606V minimum output voltage, and 300kHz–2.2MHz programmable switching frequency. It serves as a primary DC-DC power regulator in automotive infotainment systems requiring compact, high-efficiency 2.7V–6.0V input conversion.
For engineers reviewing the MPQ2124GD-AEC1-Z datasheet, MPQ2124GD-AEC1-Z pinout, MPQ2124GD-AEC1-Z application, or MPQ2124GD-AEC1-Z equivalent, key selection considerations include AAM/FCCM light-load mode selection, valley-current-based over-current protection, internal compensation for minimal external components, PG indicator timing thresholds (±5% hysteresis), and QFN-11 (2mm×3mm) thermal performance under -40°C to +125°C junction temperature.
Technical Context
The MPQ2124GD-AEC1-Z implements peak current-mode control with internal slope compensation and cycle-by-cycle current limiting using valley-current detection. Its dual-mode operation-Advanced Asynchronous Mode (AAM) below 0.4V on MODE pin and Forced Continuous Conduction Mode (FCCM) above 1.2V-enables dynamic efficiency optimization across load ranges.
It integrates a 0.606V ±10mV reference error amplifier, 180° phase-shifted SYNCO output for multi-phase synchronization, and robust protection including auto-recovery thermal shutdown (170°C trip, 25°C hysteresis), 115% VFB over-voltage lockout, and 100ns minimum off-time enforcement to prevent sub-harmonic oscillation at high duty cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 6.0V - supports direct connection to automotive 3.3V/5V rails and battery-backed supplies without pre-regulation. |
| Output Voltage Range | 0.606V to VIN - enables core voltage regulation for low-VDD microcontrollers and SoCs down to sub-1V logic domains. |
| Continuous Output Current | 3A - sustained delivery with internal 35mΩ HS and 25mΩ LS MOSFETs, eliminating need for external Schottky diode. |
| Switching Frequency | 300kHz to 2.2MHz - programmable via resistor or external SYNC clock; enables <1µH inductor selection for space-constrained PCB layouts. |
| Quiescent Current | 42μA in AAM - ensures >1000-hour battery runtime in always-on telematics modules with VIN=3.6V, no load. |
| Protection Features | Cycle-by-cycle OCP (6.3A peak), short-circuit recovery, 170°C thermal shutdown with 25°C hysteresis, and 15% PG window with 5% hysteresis - provides fault resilience in unattended automotive environments. |
| Package | QFN-11 (2mm × 3mm, 0.5mm pitch) - exposes thermal pad for direct PCB copper pour attachment, achieving θJA = 42°C/W on 4-layer EVB. |
Pinout & Package
MPQ2124GD-AEC1-Z is housed in a thermally enhanced QFN-11 package (2mm × 3mm, 0.5mm pitch) with exposed thermal pad. Pin 1 is marked by dot; top marking includes "BGD" product code, year/week code, and lot number.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Main power input | Supplies all internal circuitry and power switches; requires local 10µF ceramic decoupling to PGND. |
| 2 PGND | Power ground return | Low-impedance path for high di/dt switch currents; must connect to both input and output capacitor negatives. |
| 3 FREQ/SYNC | Frequency programming & sync interface | Resistor-to-GND sets fSW; external 0.3–2.2MHz clock synchronizes rising edge to internal oscillator. |
| 4 AGND | Analog reference ground | Separate ground for feedback, error amp, and soft-start circuits; must be star-connected to PGND at single point. |
| 5 FB | Voltage feedback node | Connects to resistor divider tap; monitors VOUT for regulation and triggers PG assertion within ±15% of 0.606V. |
| 6 SS | Soft-start timing control | Capacitor-to-GND sets ramp time; floating defaults to 1ms internal soft-start to limit inrush current. |
| 7 SW | Switch node | Drives external inductor; exhibits fast 50ns min on-time and 95ns min off-time for high-duty-cycle operation. |
| 8 PG | Power-good open-drain output | Pulled up to VIN internally; asserts high when VFB is within 108–122% of VREF and de-asserts within 5µs on fault. |
| 9 SYNCO | Synchronization output | 180° out-of-phase clock signal for interleaving multiple MPQ2124s; drives 50pF load at 2.2MHz. |
| 10 MODE | Light-load operation mode select | Logic-high ≥1.2V forces FCCM; logic-low ≤0.4V enables AAM; floating is prohibited due to undefined behavior. |
| 11 EN | Enable control input | Positive logic: ≥1.2V enables device; ≤0.4V disables; internal 1MΩ pulldown allows floating-disable configuration. |
Key Features
| Feature | Design Value |
|---|---|
| AAM/FCCM selectable light-load mode | Reduces quiescent current to 42μA while maintaining regulated output, extending battery life in parked-state automotive modules. |
| Valley-current over-current protection | Detects current collapse at switch turn-off to prevent runaway during short-circuit events, enabling safe auto-recovery without latch-off. |
| Internal compensation network | Eliminates need for external Type-II/III compensation components, reducing BOM count and layout sensitivity in cost-sensitive designs. |
| 100% duty-cycle capability | Permits dropout operation down to VOUT ≈ VIN − IOUT × RDSON-P, critical for cold-crank scenarios where VIN dips to 2.7V. |
| PG indicator with tight threshold hysteresis | Provides reliable system-level power sequencing via 5% hysteresis on upper/lower thresholds, preventing false toggling near regulation boundary. |
Applications
| Automotive Infotainment Head Unit | Automotive Digital Cluster Display |
|---|---|
Use Scenario: Powering ARM Cortex-A53 SoC cores and DDR3L memory in head unit main board under 12V battery supply with cold-crank transients. IC Role / Device Role / Timing Role: Primary 1.1V/1.35V synchronous buck regulator with AAM mode active during standby screen-off state. Use Value: Achieves 92% efficiency at 10mA load (AAM) and 94% at 2A (FCCM), reducing thermal load on sealed enclosure while meeting AEC-Q100 Grade 1 reliability. | Use Scenario: Generating 3.3V rail for TFT LCD driver ICs and touch controller in instrument cluster with EMI-sensitive analog front-end. IC Role / Device Role / Timing Role: Secondary 3.3V buck converter synchronized via SYNCO to main SoC clock domain to suppress beat-frequency noise. Use Value: 2.2MHz fixed-frequency FCCM operation minimizes inductor size (<1.0mm height) and keeps switching harmonics above AM radio band (1.6MHz). |
| Automotive Telematics Control Unit | Portable Industrial Data Logger |
Use Scenario: Supplying 1.8V to LTE modem baseband processor and GNSS receiver in always-connected TCU with 48-hour backup battery requirement. IC Role / Device Role / Timing Role: High-efficiency 1.8V regulator operating in AAM during GPS sleep cycles and FCCM during data burst transmission. Use Value: 42μA IQ enables >1200h battery life in sleep; valley-OCP prevents modem latch-up during antenna surge events. | Use Scenario: Regulating 1.2V for ultra-low-power MCU and 3.3V for SD card interface in handheld field logger powered by two AA cells (2.4–3.2V range). IC Role / Device Role / Timing Role: Input-range-optimized buck converter leveraging 2.7V–6.0V operation to avoid linear regulator inefficiency during battery discharge. Use Value: 100% duty-cycle support maintains regulation until battery reaches 1.2V + IOUT×35mΩ, maximizing usable cell capacity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRVR | Lower 3.6V max VIN, 2A output, no AAM mode, 2.25MHz fixed frequency only | Lacks automotive qualification and valley-current OCP; suitable for non-automotive portable instruments only | Select if AEC-Q100 is not required and input never exceeds 3.6V |
| LM61480RQR | Higher 36V VIN, 8A output, pin-compatible package but larger QFN-16, no AEC-Q100 grade | Designed for industrial 24V systems; thermal design and loop compensation differ significantly | Choose only for higher-power non-automotive applications where footprint compatibility is secondary |
Compared with TPS62231DRVR and LM61480RQR, MPQ2124GD-AEC1-Z uniquely combines AEC-Q100 Grade 1 qualification, 3A output in QFN-11, AAM/FCCM dual-mode control, and valley-current OCP-making it the sole option for space-constrained, safety-aware automotive subsystems operating from 2.7V–6.0V inputs.
Availability
MPQ2124GD-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment, digital instrument clusters, and telematics control units requiring stable component supply with full AEC-Q100 compliance and long-term production continuity.
Supply support for MPQ2124GD-AEC1-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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MPQ2124 belongs to MPS's automotive-grade DC-DC converter product line, engineered specifically for AEC-Q100-compliant power delivery in infotainment, cluster, and telematics systems where small size, high efficiency, and robust fault handling are mandatory.
FAQ
What is the minimum recommended output capacitor for stable operation?
The MPQ2124GD-AEC1-Z requires ≥22µF total output capacitance with ≤10mΩ ESR for stable regulation across load steps. Typical designs use 44µF (two 22µF X5R 0603 ceramics in parallel) to meet ripple and transient response specs per Figure 9 in the datasheet.
How does the MODE pin affect light-load efficiency?
When MODE is pulled low (<0.4V), the device enters Advanced Asynchronous Mode (AAM), skipping switching cycles to reduce gate drive and switching losses-achieving 42μA IQ. When pulled high (>1.2V), Forced Continuous Conduction Mode (FCCM) maintains fixed frequency for lower output ripple and predictable EMI profile.
Can the MPQ2124GD-AEC1-Z operate with input voltage below 2.7V?
No. The absolute minimum input voltage is 2.7V per datasheet specifications. Below this, UVLO activates and disables the device. During cold-crank events where battery dips to 2.5V, the converter will shut down until VIN rises above 2.7V (with 350mV hysteresis).
What is the purpose of the SYNCO pin and how is it used?
SYNCO outputs a 180° phase-shifted copy of the internal switching clock, enabling precise interleaving of two MPQ2124GD-AEC1-Z devices to halve input/output ripple current and reduce EMI. It drives 50pF loads at frequencies up to 2.2MHz and must not be loaded with resistive dividers.
Is external compensation required for stability?
No. The MPQ2124GD-AEC1-Z features fully internal compensation, eliminating external Type-II or Type-III networks. Stability is guaranteed with standard 1µH inductors and 22–47µF ceramic output capacitors across the full operating range.
How does the PG pin behave during startup and fault conditions?
PG asserts high (pulled to VIN) after soft-start completes and VFB remains within 108–122% of 0.606V for ≥100µs. It de-asserts within 5–30µs if VFB falls outside that window due to overload, short circuit, or input UVLO-providing deterministic power sequencing for downstream logic.
What thermal derating applies at 125°C ambient?
At TA = 125°C, maximum continuous output current drops to ~1.8A due to thermal limits. With θJA = 42°C/W on a 4-layer EVB, PD(MAX) = (150°C − 125°C)/42°C/W = 0.595W, limiting IOUT to ~1.8A at VOUT = 1.8V assuming 90% efficiency.
MPQ2124GD-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MPQ
- Package/Case:
- 11-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.606V
- Voltage - Output (Max):
- 6V
- Current - Output:
- 3A
- Frequency - Switching:
- 450kHz ~ 2.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 11-QFN (2x3)
MPQ2124GD-AEC1-Z FAQ
1.How can I place an order for MPQ2124GD-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ2124GD-AEC1-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 MPQ2124GD-AEC1-Z reliable?
The price and inventory of MPQ2124GD-AEC1-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ2124GD-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ2124GD-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ2124GD-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ2124GD-AEC1-Z?
MPQ2124GD-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ2124GD-AEC1-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 MPQ2124GD-AEC1-Z?
For technical support, including MPQ2124GD-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ2124GD-AEC1-Z requirements.
6.How does Aetrix verify that MPQ2124GD-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ2124GD-AEC1-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 MPQ2124GD-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ2124GD-AEC1-Z?
All MPQ2124GD-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ2124GD-AEC1-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 MPQ2124GD-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ2124GD-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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