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Monolithic Power Systems Inc. MPQ2166BGRHE-AEC1-Z
- Part No.:
- MPQ2166BGRHE-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 18-PowerVFQFN
- Datasheet:
-
MPQ2166BGRHE-AEC1-Z.pdf
- Description:
- IC REG BUCK ADJ DL 18QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,500
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Product details
Overview
MPQ2166BGRHE-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified dual synchronous buck regulator supporting 2A/2A or 3A/1A output configurations, operating from 2.7V–6V input and delivering regulated outputs down to 0.6V with internal 0.6V reference, peak-current-mode control, and integrated 55mΩ HS-FETs / 20mΩ LS-FETs - deployed in automotive infotainment power rails.
For engineers reviewing the MPQ2166BGRHE-AEC1-Z datasheet, MPQ2166BGRHE-AEC1-Z pinout, MPQ2166BGRHE-AEC1-Z application, or MPQ2166BGRHE-AEC1-Z equivalent, key selection criteria include dual-channel phase-shifted operation, external frequency sync capability, 100% duty cycle support for low-dropout mode, and PG/SS functionality across both channels under automotive thermal and EMI constraints.
Technical Context
The MPQ2166BGRHE-AEC1-Z implements peak-current-mode control with internal compensation per channel, enabling fast transient response without external loop components. It supports 180° out-of-phase switching to minimize input ripple and reduce required input capacitance.
Each channel features independent enable (EN1/EN2), soft-start (SS1/SS2), feedback (FB1/FB2), and power-good (PG1/PG2) pins, with shared VCC, AGND, and FREQ/SYNC resources. The device operates in forced continuous conduction mode (FCCM) across full load range and enters low-dropout mode with 100% duty cycle when VIN approaches VOUT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 6V - supports wide automotive battery range including cold-crank (≥2.7V) and load-dump transient margins. |
| Output Voltage Range | 0.6V to 5.5V - set via external resistor divider; 0.6V internal reference enables precise low-voltage core rail generation. |
| Max Output Current | 2A/2A or 3A/1A per channel - configurable dual-output architecture for asymmetric load distribution in multi-rail systems. |
| Switching Frequency | 350kHz–2.59MHz - adjustable via external FREQ resistor or external SYNC clock (0.35–3MHz), enabling AM-band avoidance and layout optimization. |
| Quiescent Current | 100μA typical - enables always-on subsystems with minimal battery drain in automotive standby modes. |
| Thermal Shutdown | 175°C threshold with 40°C hysteresis - ensures robust operation in sealed enclosures and high-ambient under-hood environments. |
| AEC-Q100 Grade | Grade 1 (−40°C to +125°C TJ) - qualified for critical automotive power domains including instrument clusters and telematics ECUs. |
Pinout & Package
MPQ2166BGRHE-AEC1-Z is housed in a wettable flank QFN-18 package (2.5mm × 3.5mm, 0.5mm pitch), optimized for automated optical inspection (AOI) and thermal performance in automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 | PG2, PG1 | Open-drain power-good outputs - indicate regulation status per channel (90%/82% VREF thresholds); require external pull-up for system sequencing. |
| 2, 14 | PGND2, PGND1 | Separate power ground terminals per channel - must be externally tied to minimize ground bounce and improve current-sense accuracy. |
| 3, 13 | SW2, SW1 | Switch-node connections - directly drive external inductors; high di/dt paths demand tight layout and Kelvin grounding. |
| 4, 12 | VIN2, VIN1 | Dedicated input supplies per channel - decoupling capacitors must be placed adjacent to each pin to suppress switching noise. |
| 5, 11 | SS2, SS1 | Soft-start timing inputs - external capacitor sets ramp time; floating defaults to 0.5ms internal start-up profile. |
| 6, 10 | FB2, FB1 | Feedback inputs - compare output voltage against 0.6V internal reference; resistor divider defines VOUT with ±1.2% tolerance over temperature. |
| 7 | AGND | Analog ground reference - must be connected to PGND1/PGND2 on PCB to prevent noise coupling into error amplifiers. |
| 8 | VCC | Internal bias supply - powered from VIN1/VIN2; requires 0.1–1μF ceramic decoupling to AGND for stable gate driver operation. |
| 9 | FREQ | Frequency-setting node - resistor-to-ground selects fSW (350kHz–2.59MHz); placement near IC minimizes parasitic interference. |
| 17 | SYNC | External clock input - synchronizes channel 1 to external source; channel 2 remains 180° out-of-phase for ripple cancellation. |
| 16, 18 | EN1, EN2 | Independent enable controls - logic-high (>0.9V) activates channel; no internal pull-down - must be actively driven to avoid undefined state. |
Key Features
| Feature | Design Value |
|---|---|
| MeshConnect™ Flip-Chip Packaging | Reduces EMI emissions and improves thermal dissipation - achieves <20°C junction rise at 2A/2A, 2.3MHz operation. |
| Integrated Compensation Network | Eliminates need for external Type-II/III compensation components - simplifies design and reduces BOM count for dual-loop systems. |
| 100% Duty Cycle Operation | Enables low-dropout mode during brown-out conditions - maintains regulation as VIN drops to VOUT level without dropout-induced reset. |
| Hiccup-Mode Over-Current Protection | Auto-recovery fault handling - disables output, discharges SS capacitor, and retries startup upon short-circuit removal. |
| Wettable Flank QFN-18 | Supports automated optical inspection of solder joints - critical for zero-defect automotive manufacturing requirements. |
Applications
| Automotive Infotainment | Instrument Cluster |
|---|---|
|
Use Scenario: Dual-rail power for SoC core (1.2V) and I/O (1.8V) in head-unit designs with CAN/FlexRay connectivity. IC Role / Device Role / Timing Role: Primary dual-output DC-DC regulator managing independent voltage domains with synchronized switching to suppress conducted EMI. Use Value: 90% efficiency at 5V→1.8V/2A enables passive cooling in space-constrained dashboards while meeting CISPR-25 Class 5 radiated emissions limits. |
Use Scenario: Power management for TFT-LCD display controller and microcontroller in digital gauge clusters. IC Role / Device Role / Timing Role: Dual-channel buck supplying 3.3V (MCU) and 1.1V (GPU) with independent enable and PG signaling for safe boot sequencing. Use Value: 180° phase shift cuts input ripple by >70%, allowing smaller 22μF X7R input caps instead of larger tantalum alternatives - reducing cost and board area. |
| Telematics Control Unit | ADAS Camera Module |
|
Use Scenario: Powering LTE modem, GNSS receiver, and secure MCU in vehicle-to-cloud communication modules. IC Role / Device Role / Timing Role: High-efficiency dual regulator with external SYNC to align switching with baseband processor clocks and avoid beat-frequency interference. Use Value: AEC-Q100 Grade 1 qualification and −40°C to +125°C operation ensure reliable function during extended parking in extreme ambient conditions. |
Use Scenario: Compact power solution for front-facing camera ECU requiring low-noise 1.2V and 2.8V rails near image sensor. IC Role / Device Role / Timing Role: Dual buck with independent soft-start (SS1/SS2) prevents inrush current conflicts during simultaneous sensor and ISP power-up. Use Value: Integrated 55mΩ/20mΩ MOSFETs eliminate Schottky diode losses - achieving 90%+ efficiency at light loads critical for always-on vision systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65023BRSBR | Triple-output (3A/1.5A/1.5A), 2.5–5.5V input, fixed 1.2V/1.5V/3.3V outputs; no external frequency sync or 100% duty cycle. | Fixed-output variant suited for non-configurable multi-rail systems; lacks programmable VOUT and phase-shift capability. | Select when fixed voltages and simpler BOM outweigh need for flexibility and EMI optimization. |
| RTQ2132BGQW | Dual 3A/3A, 2.7–6V input, 0.6–5.5V VOUT, 2.2MHz max fSW, but no AEC-Q100 qualification or wettable flank package. | Higher current per channel but unqualified for automotive; lacks PG/SS per channel and thermal shutdown hysteresis spec. | Select for industrial or consumer portable instruments where AEC-Q100 and AOI compatibility are not required. |
Compared with TPS65023BRSBR and RTQ2132BGQW, MPQ2166BGRHE-AEC1-Z uniquely combines AEC-Q100 Grade 1, wettable flank QFN, per-channel PG/SS/EN, and 180° phase shift - making it the only option qualified for safety-critical automotive dual-rail power with production-ready manufacturability.
Availability
MPQ2166BGRHE-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment, instrument cluster, and telematics applications requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant traceability.
Supply support for MPQ2166BGRHE-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 focus on efficiency, integration, and automotive-grade reliability.
The MPQ2166B product line targets compact, high-efficiency dual-output DC-DC conversion for automotive electronics, emphasizing AEC-Q100 qualification, low EMI, and thermal robustness in constrained spaces.
FAQ
What is the maximum allowable junction temperature for MPQ2166BGRHE-AEC1-Z?
The absolute maximum junction temperature is 150°C, with thermal shutdown activation at 175°C and 40°C hysteresis. Continuous operation up to +125°C junction is specified per AEC-Q100 Grade 1, and the device's QFN-18 package delivers θJA = 34.8°C/W on a 4-layer evaluation board - enabling reliable operation in under-hood environments without forced airflow.
Can MPQ2166BGRHE-AEC1-Z operate with only one channel enabled?
Yes. Each channel has independent EN1/EN2 control pins with defined logic thresholds (0.8V low, 0.9V high). Disabling one channel does not affect the other's regulation, soft-start, or PG status. The disabled channel's HS-FET remains off, minimizing quiescent current contribution - verified at ≤30μA shutdown current per channel.
How is switching frequency set when using the SYNC pin?
When an external clock is applied to SYNC, channel 1 locks to its rising edge; channel 2 automatically shifts 180° out-of-phase. The internal oscillator is overridden, and fSW equals the external clock frequency within 0.35–3MHz range. No resistor on FREQ is needed - the pin should be left floating or grounded if SYNC is unused.
What is the purpose of the AGND pin, and how should it be connected?
AGND serves as the reference for internal error amplifiers and comparators. It must be connected externally to both PGND1 and PGND2 on the PCB using low-impedance copper pours - not through vias or traces alone - to prevent noise coupling that could destabilize regulation or cause false PG faults. This connection is mandatory for specified accuracy and stability.
Does MPQ2166BGRHE-AEC1-Z support output voltage tracking?
Yes. External soft-start pins (SS1/SS2) allow coordinated ramp-up of multiple rails. By connecting SS1 and SS2 through resistors to a common reference or daisy-chaining them, designers can achieve monotonic startup sequencing - essential for FPGAs and processors requiring strict voltage ramp order to prevent latch-up or damage.
What protection features are implemented per channel?
Each channel includes cycle-by-cycle current limiting (4.8A typical HS-FET limit), hiccup-mode short-circuit recovery, thermal shutdown with hysteresis, and input UVLO (2.55V rising, 230mV hysteresis). PG outputs provide independent fault indication based on FB voltage crossing 90%/82% of 0.6V reference - enabling real-time health monitoring in ASIL-B systems.
Is the MPQ2166BGRHE-AEC1-Z RoHS and halogen-free compliant?
Yes. The device is lead-free, halogen-free, and fully compliant with EU RoHS Directive 2011/65/EU. MPS confirms green status per its Quality Assurance documentation, and the QFN-18 package uses matte tin (Sn) plating compatible with standard Pb-free reflow profiles.
MPQ2166BGRHE-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 18-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 2A/2A, 3A/1A
- Frequency - Switching:
- 350kHz ~ 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 18-QFN (2.5x3.5)
MPQ2166BGRHE-AEC1-Z FAQ
1.How can I place an order for MPQ2166BGRHE-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ2166BGRHE-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 MPQ2166BGRHE-AEC1-Z reliable?
The price and inventory of MPQ2166BGRHE-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 MPQ2166BGRHE-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ2166BGRHE-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ2166BGRHE-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ2166BGRHE-AEC1-Z?
MPQ2166BGRHE-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ2166BGRHE-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 MPQ2166BGRHE-AEC1-Z?
For technical support, including MPQ2166BGRHE-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ2166BGRHE-AEC1-Z requirements.
6.How does Aetrix verify that MPQ2166BGRHE-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ2166BGRHE-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 MPQ2166BGRHE-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ2166BGRHE-AEC1-Z?
All MPQ2166BGRHE-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ2166BGRHE-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 MPQ2166BGRHE-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ2166BGRHE-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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