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Monolithic Power Systems Inc. MPQ2167GD-Z
- Part No.:
- MPQ2167GD-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 11-PowerVFQFN
- Datasheet:
-
MPQ2167GD-Z.pdf
- Description:
- IC REG BUCK ADJ 4A 11QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,727
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Product details
Overview
MPQ2167GD-Z 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, and supports programmable switching frequency from 300kHz to 2.2MHz-enabling compact designs in automotive infotainment and telematics power rails.
For engineers reviewing the MPQ2167GD-Z datasheet, MPQ2167GD-Z pinout, MPQ2167GD-Z application, or MPQ2167GD-Z equivalent, key selection considerations include its dual-mode light-load operation (AAM/FCCM), internal compensation, 42μA quiescent current, cycle-by-cycle over-current protection with valley detection, and QFN-11 (2mm × 3mm) package with thermal performance validated for -40°C to +125°C junction operation.
Technical Context
The MPQ2167GD-Z employs peak-current-mode control with internal compensation and a dedicated AAM/FCCM mode selector (MODE pin), enabling dynamic efficiency optimization: AAM reduces switching losses at light load by pulse-skipping, while FCCM maintains fixed-frequency operation with lower output ripple. Its oscillator uses an external resistor on FREQ to set frequency, and SYNCO provides 180° phase-shifted clock output for multi-phase synchronization.
Protection architecture includes valley-current-based OCP (6.7A typical peak limit), auto-recovery thermal shutdown (170°C trip), VIN UVLO (2.5V rising threshold), VOUT over-voltage lockout (115% of VFB), and PG open-drain indicator with ±15% regulation window and 100μs delay-ensuring robust operation in automotive-grade transient environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 6.0V - supports wide automotive battery rail variation including cold-crank (≥2.7V) and load-dump-survivable operation. |
| Output Voltage Range | 0.606V to VIN - enables direct core supply for modern SoCs and MCUs requiring sub-1V rails with ±1.6% FB reference accuracy. |
| Continuous Output Current | 4A - sustained delivery with integrated 35mΩ HS and 25mΩ LS MOSFETs, eliminating need for external Schottky diode or discrete switches. |
| Switching Frequency | 300kHz to 2.2MHz - programmable via external resistor; higher frequencies allow smaller inductors (e.g., 1µH at 2.2MHz) and reduced EMI filtering area. |
| Quiescent Current | 42μA (typ.) in AAM - enables >100-hour battery hold-up in always-on automotive modules without compromising start-up responsiveness. |
| Thermal Protection | Auto-recovery thermal shutdown at 170°C (±25°C hysteresis) - prevents latch-up during sustained overload while maintaining system availability after cooldown. |
| PG Accuracy Window | ±15% of VFB (0.606V) with 5% hysteresis - ensures reliable power-rail monitoring for downstream logic sequencing and fault reporting in ASIL-B systems. |
Pinout & Package
MPQ2167GD-Z is housed in a thermally enhanced QFN-11 package (2mm × 3mm, 0.5mm pitch) with exposed thermal pad for PCB heat dissipation. Pin 1 is marked with dot; pin numbering follows standard counter-clockwise layout starting from top-left corner when pin 1 marker is oriented top-left.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Main power input | Supplies all internal circuitry and power switches; requires local 10μF ceramic decoupling to minimize high-di/dt switching noise. |
| 2 PGND | Power ground return | Low-impedance path for high-current switch node return; must connect to large copper pour shared with input/output capacitor grounds. |
| 3 FREQ | Frequency programming input | Resistor-to-GND sets switching frequency (e.g., 526kΩ → 450kHz); placement within 2mm of pin critical for stability. |
| 4 AGND | Analog reference ground | Isolated ground for error amplifier, FB, SS, and PG circuits; must be star-connected to PGND at single point near IC. |
| 5 FB | Feedback voltage sense | Connects to resistor divider output; monitors regulated output and enables PG, UVLO, and OVP functions with 100nA input bias. |
| 6 SS | Soft-start timing control | Capacitor-to-GND sets ramp time (1ms default if floating); enables controlled startup and power-rail sequencing with pre-bias tolerance. |
| 7 SW | Switch node output | Drives external inductor; connects internally to both MOSFETs; requires short, low-inductance trace to minimize ringing and EMI. |
| 8 PG | Power-good open-drain output | Pulled to VIN via internal resistor when VFB is within ±15%; sinks ≥1mA at ≤300mV for microcontroller reset assertion. |
| 9 SYNCO | Synchronization clock output | 180° phase-inverted copy of internal clock; used to synchronize second MPQ2167GD-Z or compatible converters for interleaved operation. |
| 10 MODE | Light-load operation mode select | Logic-high (>1.2V) enables FCCM; logic-low (<0.4V) enables AAM; floating state is undefined and must be avoided. |
| 11 EN | Enable control input | Positive logic enable: >1.2V turns on device; internal 1MΩ pull-down ensures safe default-off state when unconnected. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | 35mΩ HS + 25mΩ LS MOSFETs - eliminates external power components, reduces BOM count, and improves thermal coupling for 4A operation in 6mm² footprint. |
| Mode-Selectable Efficiency Control | AAM (pulse-skipping) or FCCM (fixed-frequency) via MODE pin - delivers >90% efficiency at 10mA load (AAM) and <15mVpp ripple at 4A (FCCM). |
| Robust Protection Suite | Cycle-by-cycle OCP (6.7A), short-circuit recovery, 170°C thermal shutdown with 25°C hysteresis, and ±15% PG window - meets AEC-Q100 stress test requirements. |
| Automotive-Grade Biasing | 42μA IQ, 100% duty cycle capability, and -40°C to +125°C operating range - supports extended temperature operation in engine bay and dashboard locations. |
| System Integration Support | Internal soft-start (1ms default), remote EN, PG indicator, and SYNCO clock output - enables seamless integration into multi-rail automotive power architectures. |
Applications
| Automotive Infotainment | Instrument Clusters |
|---|---|
|
Use Scenario: Powering SoC cores, DDR memory, and display interfaces in head-unit systems with strict EMC and thermal constraints. IC Role / Device Role / Timing Role: Primary 1.2V/1.8V/3.3V buck regulator with AAM mode for standby audio decoding and FCCM for GPU burst loads. Use Value: 2.2MHz operation allows 1µH inductor and 44µF output capacitance, reducing solution size by 35% vs. 500kHz alternatives while maintaining >92% full-load efficiency. |
Use Scenario: Supplying MCU, TFT-LCD bias, and CAN transceiver rails in digital instrument clusters requiring ASIL-B compliance. IC Role / Device Role / Timing Role: Main 5V-to-3.3V/1.2V conversion stage with PG signaling for boot sequence validation and thermal derating coordination. Use Value: PG output with 100μs delay and ±15% window enables deterministic firmware initialization; AEC-Q100 Grade-1 qualification ensures 15-year field reliability. |
| Telematics Control Units | Industrial Portable Instruments |
|
Use Scenario: Providing isolated 3.3V and 1.8V rails for LTE modem, GNSS receiver, and secure element in vehicle-to-cloud gateways. IC Role / Device Role / Timing Role: Secondary buck regulator synchronized via SYNCO to avoid beat-frequency EMI with primary DC/DC; MODE pin configured for FCCM during data transmission bursts. Use Value: 180° SYNCO output enables interleaving with companion MPQ2167GD-Z, cutting input ripple current by 50% and easing front-end filter design. |
Use Scenario: Battery-powered handheld test equipment requiring long runtime, fast wake-up, and stable analog supply under varying load. IC Role / Device Role / Timing Role: Main system regulator with 42μA quiescent current in AAM and 100% duty cycle for brownout recovery during Li-ion discharge to 2.8V. Use Value: 2.7V minimum input and 100% duty cycle extend usable battery capacity by ~12% compared to non-100% solutions; QFN-11 footprint simplifies 4-layer PCB layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ2169GDE-AEC1 | Higher 6A rating, 2.5V–6.0V input, same QFN-11 package but 30mΩ/18mΩ MOSFETs and 2.5MHz max frequency. | Better suited for future-proofing 5V rail designs requiring >4.5A or tighter thermal margins; not drop-in due to different FB divider ratio and SS current. | Select when output current headroom or higher-frequency operation is required; verify loop compensation and thermal layout changes. |
| TPS6286418RTER | TI part: 2.7V–6.0V, 4A, 1.8V fixed output, 1.8MHz max, 22μA IQ, but no AAM mode or SYNCO output. | Lacks programmable frequency, light-load pulse-skipping, and synchronization capability; PG threshold is ±4% (tighter) but no valley-OCP. | Prefer for cost-sensitive, fixed-output applications where AAM and multi-phase sync are unnecessary; requires redesign for variable-VOUT or AEC-Q100 Grade-1 validation. |
Compared with MPQ2167GD-Z, MPQ2169GDE-AEC1 offers higher current and frequency headroom at the cost of increased complexity, while TPS6286418RTER trades flexibility for lower IQ and simpler configuration-making MPQ2167GD-Z optimal for balanced AEC-Q100 automotive designs needing programmability, protection, and thermal resilience.
Availability
MPQ2167GD-Z is available at Aetrix Electronics and suitable for automotive infotainment, instrument clusters, telematics control units, and industrial portable instruments requiring stable component supply across extended temperature and AEC-Q100-compliant production cycles.
Supply support for MPQ2167GD-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 analog and power ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MPQ2167 product line targets automotive-grade DC/DC conversion, emphasizing AEC-Q100 qualification, integrated power stages, and adaptive light-load efficiency-designed specifically for infotainment, cluster, and telematics subsystems demanding reliability and compactness.
FAQ
What is the minimum input voltage required for MPQ2167GD-Z to operate?
The MPQ2167GD-Z has a guaranteed operational input range of 2.7V to 6.0V. Its VIN under-voltage lockout (UVLO) rising threshold is 2.5V (typical), with 350mV hysteresis, meaning it will resume operation only after VIN rises above ~2.85V following a dropout. Below 2.7V, performance-including 100% duty cycle behavior-is not characterized per datasheet.
How does the MODE pin affect efficiency and output ripple?
When MODE is pulled low (<0.4V), MPQ2167GD-Z enters Advanced Asynchronous Mode (AAM), skipping pulses at light load to reduce switching losses-yielding >90% efficiency at 10mA but higher output ripple. When MODE is pulled high (>1.2V), it forces Forced Continuous Conduction Mode (FCCM), maintaining fixed frequency and delivering <15mVpp ripple at 4A, at the cost of ~15% lower light-load efficiency.
Can MPQ2167GD-Z support pre-biased output startup?
Yes. The MPQ2167GD-Z supports pre-bias start-up: if VFB > VSS at EN assertion, neither MOSFET turns on until VSS exceeds VFB, preventing reverse current flow into a powered output rail. This behavior is inherent to its soft-start architecture and requires no external circuitry.
What is the thermal resistance (θJA) of the QFN-11 package under standard conditions?
The MPQ2167GD-Z QFN-11 (2mm × 3mm) package has a measured θJA of 70°C/W on a 4-layer JEDEC-standard PCB (JESD51-7). With proper thermal pad soldering and 2cm² copper pour, actual board-level θJA can improve to ~45°C/W, enabling 4A operation at TA = +85°C without forced airflow.
Does MPQ2167GD-Z provide output discharge functionality?
Yes. During shutdown or disable, MPQ2167GD-Z actively discharges the output through an internal 100Ω resistor (typical) placed between VOUT and PGND. This ensures rapid, controlled discharge of output capacitance-critical for power sequencing and avoiding latch-up in multi-rail systems.
How is switching frequency programmed, and what resistor value sets 2.2MHz?
Switching frequency is set by connecting a resistor (RFREQ) between FREQ pin and GND. Per the FSW vs. RFREQ curve, 2.2MHz corresponds to ~85kΩ (range: 1800–2400kHz at RFREQ = 85kΩ). Resistor tolerance should be ≤1% and placed within 2mm of the FREQ pin with short, direct GND connection to ensure accuracy.
Is the PG output compatible with 3.3V logic systems?
Yes. PG is an open-drain output with internal pull-up to VIN. When VIN = 5V, PG logic-high voltage is ≥4.5V, exceeding 3.3V logic thresholds. For 3.3V-only systems, an external pull-up to 3.3V is recommended to guarantee clean 3.3V-compatible signaling and avoid contention with other 3.3V peripherals.
MPQ2167GD-Z 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):
- 0.6V
- Voltage - Output (Max):
- 6V
- Current - Output:
- 4A
- Frequency - Switching:
- 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)
MPQ2167GD-Z FAQ
1.How can I place an order for MPQ2167GD-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ2167GD-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 MPQ2167GD-Z reliable?
The price and inventory of MPQ2167GD-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ2167GD-Z is usually 5 days.
3.What payment methods are accepted for MPQ2167GD-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ2167GD-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ2167GD-Z?
MPQ2167GD-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ2167GD-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 MPQ2167GD-Z?
For technical support, including MPQ2167GD-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ2167GD-Z requirements.
6.How does Aetrix verify that MPQ2167GD-Z is sourced from the original manufacturer or authorized distributors?
All MPQ2167GD-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 MPQ2167GD-Z meets industry standards.
7.What is the process for return or replacement of MPQ2167GD-Z?
All MPQ2167GD-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ2167GD-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 MPQ2167GD-Z part is unused and in its original packaging.
Return procedure for MPQ2167GD-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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