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Monolithic Power Systems Inc. MPQ2179BGQHE-AEC1-Z
- Part No.:
- MPQ2179BGQHE-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 8-VFDFN
- Datasheet:
-
MPQ2179BGQHE-AEC1-Z.pdf
- Description:
- 6V, 3A, 710KHZ, SYNCHRONOUS STEP
- Quantity:
- Payment:
- Shipping:
Inventory:4,777
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Product details
Overview
MPQ2179BGQHE-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified synchronous step-down DC/DC converter delivering up to 3A continuous output current across a 2.5V–6V input range, regulating output down to 0.5V with 1% FB accuracy and 710kHz fixed switching frequency. It integrates 65mΩ high-side and 35mΩ low-side MOSFETs, supports forced continuous conduction mode (FCCM), and includes power good (PG), external soft start (SS), and hiccup-mode short-circuit protection - deployed in automotive clusters and infotainment power rails.
For engineers reviewing the MPQ2179BGQHE-AEC1-Z datasheet, MPQ2179BGQHE-AEC1-Z pinout, MPQ2179BGQHE-AEC1-Z application, or MPQ2179BGQHE-AEC1-Z equivalent, key selection criteria include its -40°C to +150°C junction temperature rating, wettable flank QFN-8 (1.5mm×2mm) package for automated optical inspection, AEC-Q100 qualification evidence, and integrated compensation network reducing external component count.
Technical Context
The MPQ2179B uses constant-on-time (COT) control with VIN feed-forward to maintain stable 710kHz switching across input and load variations, enabling fast transient response without loop compensation. Its FCCM operation ensures continuous inductor current at all loads, minimizing output voltage ripple and improving EMI behavior.
Internal protection architecture includes cycle-by-cycle peak current limiting (5A typical), valley current limiting (3.5A typical), thermal shutdown at 170°C, output over-voltage protection (116% of VREF), and hiccup-mode recovery during sustained short-circuit events - all validated for automotive-grade reliability under AEC-Q100 Grade 1 conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 6V - supports direct connection to automotive 3.3V/5V rails and battery-supplied systems with brown-in/brown-out resilience. |
| Output Current | 3A continuous - sufficient for powering SoCs, FPGAs, and display drivers in telematics modules without external boost stages. |
| Feedback Accuracy | ±1% at TJ = 25°C; ±1.5mV over -40°C to +150°C - enables precise low-voltage rail regulation (e.g., 0.5V core supplies) without calibration. |
| Switching Frequency | 710kHz nominal - balances efficiency, inductor size, and EMI filtering requirements; meets CISPR-25 Class 5 conducted/radiated limits in typical layout. |
| Thermal Rating | Junction temperature range: -40°C to +150°C - validated for under-hood and dashboard-mounted applications per AEC-Q100 Grade 1. |
| Protection Features | PG indicator, SS control, OVP (116% VREF), SCP with hiccup, thermal shutdown (170°C), and 100% duty cycle capability - eliminates need for external supervision ICs. |
| Package | QFN-8 (1.5mm × 2mm) with wettable flanks - supports automated AOI and reflow process control in high-reliability automotive PCB assembly. |
Pinout & Package
MPQ2179BGQHE-AEC1-Z is housed in a thermally enhanced, lead-free, wettable flank QFN-8 package (1.5mm × 2mm, 0.5mm pitch), optimized for compact automotive PCBs and automated optical inspection. The exposed thermal pad must be soldered to a dedicated PCB copper pour for optimal thermal performance (θJC = 14°C/W on MPS EVB).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - PG | Open-drain power-good indicator | Pulled high when VFB ≥ 90% VREF; pulled low if VFB ≤ 84% VREF - provides system-level rail monitoring with 70μs delay for sequencing logic. |
| 2 - VIN | Main input supply | Accepts 2.5V–6V; requires local ceramic decoupling (≥10μF) near pin to suppress high-frequency transients from battery or LDO sources. |
| 3 - SW | Switching node | Drain of internal P-channel HS-FET; connects directly to inductor - trace routing must minimize loop area to reduce EMI and voltage spikes. |
| 4 - GND | Power and signal reference | Common return for internal circuits and external components; must be tied to thermal pad and low-impedance ground plane. |
| 5 - EN | Enable control input | Logic-compatible (0.65V/0.9V thresholds); internal 2MΩ pull-down allows default-off operation - used for power sequencing with MCU GPIOs. |
| 6 - SS | Soft-start timing control | Accepts external capacitor (≥6.8nF) to set controlled VOUT ramp rate - prevents inrush current into downstream capacitance (e.g., DDR memory rails). |
| 7 - OUT | Regulated output power rail | Delivers up to 3A; connects to output capacitor bank and load - requires low-ESR ceramic capacitors (e.g., 2×22μF) for stability and ripple suppression. |
| 8 - FB | Voltage feedback sense | Monitors resistor divider from OUT to GND; compares to 0.5V internal reference - sets VOUT = 0.5V × (1 + R1/R2) with <1.5mV drift over full temperature range. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | 65mΩ P-ch and 35mΩ N-ch MOSFETs - eliminate external switch losses and gate drive complexity while maintaining >90% efficiency at 1.2V/2A. |
| AEC-Q100 Grade 1 Qualification | Validated for -40°C to +150°C operation with full stress testing (HTOL, TC, UHAST) - required for safety-critical cluster and ADAS subsystems. |
| MeshConnect™ Flip-Chip Packaging | Wettable flank QFN-8 with copper pillar interconnects - improves thermal resistance (θJA = 59°C/W on 4-layer EVB) and solder joint reliability vs. wire-bond alternatives. |
| FCCM Operation | Forced continuous conduction across entire load range - eliminates audible noise and output voltage discontinuity at light loads common in PWM-controlled buck converters. |
| MPSafe™ QM Functional Safety Support | Documentation available for ISO 26262 ASIL-B system integration - enables use in safety-managed domains without requiring full ASIL-certified silicon. |
Applications
| Automotive Infotainment Power | ADAS Camera Module Supply |
|---|---|
Use Scenario: Powers application processors and display interfaces in head-unit systems with variable load profiles and strict EMI limits. IC Role / Device Role / Timing Role: Primary 1.2V/1.8V/3.3V point-of-load regulator with PG signaling for system boot coordination. Use Value: FCCM mode eliminates low-load frequency modulation; 710kHz switching enables small 1μH inductors and meets CISPR-25 Class 5 radiated emissions without shielding. | Use Scenario: Supplies image sensor and ISP in rear-view or surround-view cameras mounted in exterior housings. IC Role / Device Role / Timing Role: High-reliability 1.2V core rail generator with thermal shutdown and OVP to prevent sensor latch-up during voltage surges. Use Value: -40°C to +150°C operation ensures startup and runtime stability in unheated camera enclosures; wettable flank package enables 100% solder joint inspection. |
| Automotive Cluster Backlight Driver | Telematics Control Unit (TCU) Core Rail |
Use Scenario: Delivers regulated 5V/3.3V to LED driver ICs and microcontrollers in digital instrument clusters. IC Role / Device Role / Timing Role: Secondary buck stage following main 12V-to-5V conversion; provides clean, sequenced power with PG confirmation. Use Value: 1% FB accuracy maintains consistent LED brightness across temperature; SS pin enables synchronized ramp-up with display controller enable signals. | Use Scenario: Generates 1.1V core voltage for LTE/C-V2X modems and application MCUs in vehicle connectivity modules. IC Role / Device Role / Timing Role: High-efficiency, low-noise POL converter with hiccup-mode SCP to survive antenna short-circuit faults during installation. Use Value: Integrated OVP and SCP protect modem ICs from bus transients; 3A capability supports burst-mode data transmission without thermal throttling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62933RGER | 4.5V–18V input, 3A, 1.8MHz, lower quiescent current (15μA), no PG or SS pins | Targets higher-input industrial systems; lacks automotive qualification and rail-monitoring features | Select only if input exceeds 6V and PG/SS are not required; not suitable for AEC-Q100-compliant designs. |
| RTQ2134BGQW | 2.7V–6V input, 3A, 2.2MHz, AEC-Q100 Grade 1, includes PG but no SS pin | Higher fSW reduces inductor size but increases switching losses at 3A; no soft-start programmability | Prefer when board space is critical and fixed startup timing suffices; verify thermal performance at full load with 2.2MHz operation. |
Compared with TPS62933RGER and RTQ2134BGQW, MPQ2179BGQHE-AEC1-Z uniquely combines 2.5V–6V input flexibility, integrated SS/PG, FCCM operation, and wettable flank packaging - making it the only option qualified for demanding automotive interior power nodes requiring both functional safety support and manufacturability assurance.
Availability
MPQ2179BGQHE-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and telematics control units requiring stable component supply with full AEC-Q100 documentation and long-term production support.
Supply support for MPQ2179BGQHE-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 MPQ2179B belongs to MPS's automotive-grade DC/DC converter product line, engineered specifically for AEC-Q100 compliance, high-temperature operation, and EMI-robust power delivery in next-generation vehicle electronics.
FAQ
What is the minimum recommended soft-start capacitor value for MPQ2179BGQHE-AEC1-Z?
The datasheet specifies a minimum soft-start capacitor (CSS) of 6.8nF. This value ensures adequate startup time to limit inrush current while maintaining compatibility with the internal 15µA soft-start charge current. Using smaller values may cause output overshoot; larger values extend startup duration but improve surge immunity.
Does MPQ2179BGQHE-AEC1-Z support 100% duty cycle operation?
Yes - the device supports 100% duty cycle in dropout conditions, allowing VOUT to track VIN minus small conduction losses. This feature is essential for automotive applications where input voltage may dip below the regulated output during cold-crank events (e.g., 2.5V start-up with 2.8V rail).
How is power-good (PG) functionality implemented, and what are its thresholds?
PG is an open-drain output that asserts high when FB voltage exceeds 90% of the 0.5V internal reference (i.e., ≥450mV), and pulls low when FB falls below 84% (≤420mV). The 6% hysteresis prevents chatter during marginal regulation, and the 70μs propagation delay ensures stable system sequencing.
Can MPQ2179BGQHE-AEC1-Z operate in discontinuous conduction mode (DCM)?
No - the device operates exclusively in forced continuous conduction mode (FCCM) across the full load range. This eliminates low-load frequency variation and associated EMI peaks, simplifies filter design, and ensures predictable transient response without mode-switching artifacts.
What thermal derating guidance applies for MPQ2179BGQHE-AEC1-Z at 3A output?
At 3A and ambient temperatures above 85°C, output current must be reduced per the thermal derating curve. With θJA = 59°C/W on a 4-layer EVB, power dissipation exceeds safe limits above ~75°C ambient unless additional copper area or airflow is provided - refer to Figure 11 (Case Temperature Rise) for exact derating values.
Is the MPQ2179BGQHE-AEC1-Z pin-compatible with earlier MPQ2179 variants?
Yes - the MPQ2179BGQHE-AEC1-Z shares identical pinout, footprint, and electrical characteristics with non-AEC versions (e.g., MPQ2179GQHE), differing only in qualification documentation, test screening, and top marking. Drop-in replacement is supported for automotive upgrade paths.
What failure modes trigger hiccup-mode short-circuit protection?
Hiccup mode activates when inductor current reaches the peak limit (typically 5A) and persists beyond the valley limit recovery window - indicating sustained overload or output short. The device disables switching, discharges the SS capacitor, then restarts after full discharge, repeating until fault removal.
MPQ2179BGQHE-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 8-VFDFN
- 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):
- 2.5V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.5V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 3A
- Frequency - Switching:
- 710kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 8-QFN (2x1.5)
MPQ2179BGQHE-AEC1-Z FAQ
1.How can I place an order for MPQ2179BGQHE-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ2179BGQHE-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 MPQ2179BGQHE-AEC1-Z reliable?
The price and inventory of MPQ2179BGQHE-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 MPQ2179BGQHE-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ2179BGQHE-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ2179BGQHE-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ2179BGQHE-AEC1-Z?
MPQ2179BGQHE-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ2179BGQHE-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 MPQ2179BGQHE-AEC1-Z?
For technical support, including MPQ2179BGQHE-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ2179BGQHE-AEC1-Z requirements.
6.How does Aetrix verify that MPQ2179BGQHE-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ2179BGQHE-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 MPQ2179BGQHE-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ2179BGQHE-AEC1-Z?
All MPQ2179BGQHE-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ2179BGQHE-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 MPQ2179BGQHE-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ2179BGQHE-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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