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Monolithic Power Systems Inc. MPQ2167GD-P
- Part No.:
- MPQ2167GD-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 11-PowerVFQFN
- Datasheet:
-
MPQ2167GD-P.pdf
- Description:
- IC REG BUCK ADJ 4A 11QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,684
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Product details
Overview
MPQ2167GD-P from Monolithic Power Systems is an AEC-Q100 Grade-1 qualified, frequency-programmable synchronous buck converter delivering up to 4A continuous output current with 35mΩ/25mΩ integrated high-side and low-side MOSFETs. It operates from 2.7V–6.0V input, regulates down to 0.606V, supports 300kHz–2.2MHz switching (via external FREQ resistor), and features selectable AAM/FCCM light-load modes - deployed in automotive infotainment, clusters, and telematics power rails.
For engineers reviewing the MPQ2167GD-P datasheet, MPQ2167GD-P pinout, MPQ2167GD-P application, or MPQ2167GD-P equivalent, key selection criteria include its AEC-Q100 qualification, 100% duty cycle capability for battery-extending operation, valley-current-based OCP, PG open-drain indicator with ±15% regulation window, and QFN-11 (2mm × 3mm) thermally enhanced package for space-constrained automotive PCBs.
Technical Context
The MPQ2167GD-P uses peak-current-mode control with internal compensation, enabling fast transient response without external loop components. Its dual-mode operation - FCCM (fixed-frequency, low-ripple) and AAM (asynchronous, ultra-low IQ) - is selected via the MODE pin and governed by a dedicated VAAM threshold comparator that dynamically scales switching frequency under light load.
It integrates full protection logic: cycle-by-cycle over-current detection with valley-current sensing, auto-recovery thermal shutdown at 170°C, 115% VFB over-voltage lockout, and VIN UVLO with 350mV hysteresis. The SYNCO pin outputs a 180° phase-shifted clock for multi-phase synchronization to reduce input ripple.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 6.0V - supports wide automotive battery range including cold-crank (≥2.7V) and post-regulation supplies. |
| Output Current | Up to 4A continuous - enabled by integrated 35mΩ HS and 25mΩ LS MOSFETs, eliminating need for external Schottky diode. |
| Switching Frequency | 300kHz to 2.2MHz programmable via resistor on FREQ pin - allows optimization of size (high-freq → smaller inductor) vs. efficiency (low-freq → lower switching loss). |
| Quiescent Current | 42μA in AAM mode - enables >10-year battery life in always-on automotive modules (e.g., telematics wake-up circuits). |
| Feedback Reference | 0.606V ±10mV - sets precise output voltage via external resistor divider; used by PG, OVP, and UVLO monitoring circuits. |
| Protection Features | Cycle-by-cycle OCP (6.7A typ), short-circuit recovery, 170°C thermal shutdown with 25°C hysteresis, and 115% VFB over-voltage lockout - ensures robust operation in harsh automotive environments. |
| Package | QFN-11 (2mm × 3mm, 0.5mm pitch) - exposes thermal pad for direct PCB copper connection, achieving θJA = 70°C/W on 4-layer board. |
Pinout & Package
MPQ2167GD-P is housed in a thermally optimized QFN-11 (2mm × 3mm) package with exposed thermal pad. Pin functions are validated per MPS MPQ2167 Rev. 1.0 datasheet (March 2019).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Power input supply | Primary HV rail input; requires local 10μF ceramic decoupling to PGND to suppress switching noise. |
| 2 PGND | Power ground return | High-current return path for input/output capacitors and inductor; must connect to large copper pour for thermal and EMI control. |
| 3 FREQ | Frequency programming input | Resistor-to-GND sets switching frequency (e.g., 85kΩ → 2.2MHz); layout critical - place resistor within 2mm of pin. |
| 4 AGND | Analog reference ground | Low-noise ground for FB, SS, EN, MODE; must be star-connected to PGND at single point to avoid coupling. |
| 5 FB | Feedback voltage sense | Connects to resistor divider tap; monitors output regulation and triggers PG, OVP, and UVLO functions. |
| 6 SS | Soft-start timing control | Capacitor-to-GND sets ramp time (tSS ≈ 0.606V × CSS / 4μA); floating defaults to 1ms internal soft-start. |
| 7 SW | Switch node | Drives external inductor; high dv/dt node requiring tight layout and minimized trace area to reduce EMI. |
| 8 PG | Power good indicator | Open-drain output pulled to VIN; asserts high when FB is within ±15% of 0.606V, with 40–180μs delay. |
| 9 SYNCO | Synchronization output | 180° phase-inverted clock output - enables interleaved operation with second MPQ2167GD-P to halve input ripple current. |
| 10 MODE | Light-load mode select | Logic-high (>1.2V) forces FCCM; logic-low (<0.4V) enables AAM; floating not allowed - internal pull-down prevents undefined state. |
| 11 EN | Enable control input | Positive logic enable; turns on when >1.2V (typ), off when <0.4V or grounded; internal 1MΩ pull-down ensures default disable. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | 35mΩ HS + 25mΩ LS MOSFETs - eliminates external rectifier, reduces BOM count, and improves full-load efficiency by ≥3% vs. discrete solutions. |
| Mode Flexibility | Selectable AAM (42μA IQ) or FCCM (fixed fSW, lower VOUT ripple) - enables dynamic trade-off between standby power and noise-sensitive applications. |
| 100% Duty Cycle Operation | HS-FET remains fully on when VIN approaches VOUT - extends usable battery voltage range in automotive systems (e.g., 12V battery down to ~3.3V). |
| Valley-Current OCP | Detects inductor current minimum before HS turn-on - prevents current runaway during short-circuit or overload, enabling reliable auto-recovery. |
| Internal Compensation | No external Type-II/III compensation network required - simplifies design, reduces footprint, and guarantees stability across all operating conditions. |
| AEC-Q100 Grade-1 Qualification | Rated for −40°C to +125°C junction temperature - validated for automotive powertrain-adjacent and infotainment applications per stress test requirements. |
Applications
| Automotive Infotainment | Automotive Digital Cluster |
|---|---|
|
Use Scenario: Powering SoC core rails (e.g., ARM Cortex-A72 @ 1.2V/3A) and DDR memory in head-unit systems. IC Role / Device Role / Timing Role: Primary step-down regulator delivering stable, low-noise 1.2V/1.8V/3.3V from 5V pre-regulator; PG signals SoC reset release. Use Value: AAM mode cuts IQ to 42μA during display-off states, extending ignition-off battery life; FCCM mode ensures low ripple during video rendering. |
Use Scenario: Supplying MCU, TFT-LCD bias, and CAN transceiver in digital instrument clusters. IC Role / Device Role / Timing Role: Dual-output configuration (using two MPQ2167GD-P) with SYNCO synchronization provides clean 5V and 3.3V rails with minimized input capacitor stress. Use Value: 100% duty cycle maintains cluster backlight operation during cold-crank (VIN dips to 2.7V); AEC-Q100 Grade-1 ensures reliability over 15-year vehicle lifetime. |
| Automotive Telematics Control Unit | Industrial Portable Test Equipment |
|
Use Scenario: Powering LTE modem, GNSS receiver, and secure element in TCU modules with always-on connectivity. IC Role / Device Role / Timing Role: Always-on buck converter supplying 1.8V to GNSS RF front-end; MODE pin tied low for AAM to minimize quiescent draw. Use Value: 42μA IQ enables >10-year backup battery life; PG signal validates rail integrity before modem wake-up, preventing false network reconnection attempts. |
Use Scenario: Regulating 3.3V/2A for microcontroller and sensor interface in handheld calibration tools. IC Role / Device Role / Timing Role: Compact, thermally efficient DC/DC stage replacing larger discrete buck solutions in IP67-rated enclosures with limited airflow. Use Value: QFN-11 (2mm × 3mm) footprint saves >40% PCB area vs. SO-8 alternatives; internal compensation eliminates tuning effort during production calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62864A0RQYR (TI) | 4A, 2.7–6V, fixed 2.2MHz fSW, no AAM mode, higher IQ (65μA), QFN-12 (2.5×3mm) | Lacks light-load efficiency optimization; better suited for constant-load industrial sensors than automotive sleep/wake cycles. | Choose when fixed frequency and TI ecosystem support outweigh need for ultra-low IQ. |
| RTQ2132BGQW (Richtek) | 4A, 2.5–6V, 300kHz–2.2MHz programmable fSW, AAM mode, 30μA IQ, QFN-12 (2×2mm) | Lower IQ but lacks AEC-Q100 qualification and has no SYNCO pin - unsuitable for synchronized multi-rail automotive designs. | Consider only for non-automotive portable applications where cost and size are prioritized over qualification and synchronization. |
Compared with TPS62864A0RQYR and RTQ2132BGQW, MPQ2167GD-P uniquely combines AEC-Q100 Grade-1 qualification, 42μA AAM IQ, SYNCO synchronization, and 100% duty cycle - making it the only drop-in solution for safety-critical, battery-sensitive automotive subsystems requiring both reliability and ultra-low standby power.
Availability
MPQ2167GD-P is available at Aetrix Electronics and suitable for automotive infotainment, digital cluster, and telematics control unit designs requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant sourcing.
Supply support for MPQ2167GD-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 in the US, China, and Taiwan, and global manufacturing partnerships.
The MPQ2167GD-P belongs to MPS's automotive-grade buck converter product line, engineered specifically for demanding 12V battery-fed systems in infotainment, ADAS, and body electronics - emphasizing AEC-Q100 compliance, thermal resilience, and functional safety readiness.
FAQ
What is the maximum allowable input voltage for MPQ2167GD-P?
The absolute maximum input voltage is +6.5V, but the recommended continuous operating range is 2.7V to 6.0V. Exceeding 6.0V may trigger over-voltage protection or cause permanent damage. During cold-crank events, transient spikes up to 6.5V are tolerated for <10ns per Absolute Maximum Ratings table.
How does the MODE pin affect efficiency and output ripple?
When MODE is pulled low (<0.4V), MPQ2167GD-P enters Advanced Asynchronous Mode (AAM), reducing switching frequency under light load to cut IQ to 42μA - maximizing efficiency but increasing output ripple. When MODE is pulled high (>1.2V), it forces Forced Continuous Conduction Mode (FCCM), maintaining fixed frequency and minimizing ripple at the cost of higher light-load IQ (~120μA).
Can MPQ2167GD-P operate with a pre-biased output?
Yes - MPQ2167GD-P supports pre-bias start-up. If VFB > VSS at enable, neither MOSFET turns on until VSS rises above VFB, preventing reverse current flow into the output capacitor and avoiding potential damage to downstream circuitry.
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. It is used to synchronize a second MPQ2167GD-P (or compatible device) in interleaved configuration, reducing total input ripple current by up to 50% and easing input capacitor sizing in high-current automotive rails.
Does MPQ2167GD-P require external compensation components?
No - MPQ2167GD-P uses internal compensation with peak-current-mode control, eliminating the need for external Type-II or Type-III compensation networks. This reduces design complexity, PCB area, and validation effort while guaranteeing stability across all input/output conditions.
How is over-current protection implemented, and does it auto-recover?
OCP uses valley-current detection to monitor inductor current minima before each HS-FET turn-on. Upon fault, it disables switching for 100μs (OCP timer), then automatically resumes operation - providing robust short-circuit protection without requiring external latch or system intervention.
Is the thermal pad on the QFN-11 package required to be soldered?
Yes - the exposed thermal pad must be soldered to a dedicated PCB thermal plane using ≥4 thermal vias (0.3mm diameter) to inner ground layers. Failure to do so degrades θJA from 70°C/W to >120°C/W, risking thermal shutdown at ≤2.5A load in ambient >60°C.
MPQ2167GD-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- 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:
- 4A
- Frequency - Switching:
- Up to 2.2MHz
- 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)
MPQ2167GD-P FAQ
1.How can I place an order for MPQ2167GD-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ2167GD-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 MPQ2167GD-P reliable?
The price and inventory of MPQ2167GD-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ2167GD-P is usually 5 days.
3.What payment methods are accepted for MPQ2167GD-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ2167GD-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ2167GD-P?
MPQ2167GD-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ2167GD-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 MPQ2167GD-P?
For technical support, including MPQ2167GD-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ2167GD-P requirements.
6.How does Aetrix verify that MPQ2167GD-P is sourced from the original manufacturer or authorized distributors?
All MPQ2167GD-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 MPQ2167GD-P meets industry standards.
7.What is the process for return or replacement of MPQ2167GD-P?
All MPQ2167GD-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ2167GD-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 MPQ2167GD-P part is unused and in its original packaging.
Return procedure for MPQ2167GD-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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