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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > DC DC Switching Controllers

Monolithic Power Systems Inc. MPQ4214GU-AEC1-P

Name: MPQ4214GU-AEC1-P
Brand: Monolithic Power Systems Inc.
SKU: MPQ4214GU-AEC1-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPQ4214GU-AEC1-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: DC DC Switching Controllers

Package:: 27-VFQFN Exposed Pad

Datasheet:: MPQ4214GU-AEC1-P.pdf

Description:: IC REG BUCK-BOOST

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MPQ4214GU-AEC1-P from Monolithic Power Systems is a synchronous four-switch buck-boost controller qualified to AEC-Q100 Grade 1, supporting 6V–40V startup and 5V–40V operation input ranges, I²C-programmable 0.5V–36V output voltage, and adjustable average current limit via IPWM pin. It implements valley current control in buck mode and peak current control in boost mode for fast transient response in USB PD, industrial PC, and high-power LED driver applications.

For engineers reviewing the MPQ4214GU-AEC1-P datasheet, MPQ4214GU-AEC1-P pinout, MPQ4214GU-AEC1-P application, or MPQ4214GU-AEC1-P equivalent, key selection considerations include its AEC-Q100 Grade 1 qualification, I²C-based VOUT/VREF/slew-rate/current-limit programming, 200–600kHz selectable switching frequency, integrated hiccup OCP and auto-retry OVP, and QFN-27 (5mm×5mm) wettable flank package with exposed thermal pad.

Technical Context

The MPQ4214GU-AEC1-P operates as a four-switch synchronous buck-boost controller using dual-mode current sensing: valley current control during buck operation and peak current control during boost operation, enabling seamless mode transition and stable regulation across VIN-to-VOUT crossover. Its I²C interface provides real-time programmability of output voltage (0.5V–36V), reference voltage (0.5V–2.047V in 1mV steps), slew rate, and constant-current limit (0.6A steps).

It supports forced continuous conduction mode (FCCM), programmable soft-start via external capacitor on SS pin, and dual-path current sensing-using CSP/CSN for switch-node current and IAVGP/IAVGN for average output current limiting-with IPWM enabling dynamic current limit scaling via PWM duty cycle (e.g., 48% → 37mV, 71.5% → 52.5mV at ILIM=111b). Thermal shutdown activates at 150°C with 25°C hysteresis.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	6V–40V startup; 5V–40V operational - enables direct battery connection in automotive 12V/24V systems without pre-regulation
Output Voltage Range	0.5V–36V programmable via I²C - supports USB PD profiles (5V/9V/15V/20V) and wide-range LED string biasing
Switching Frequency	Selectable 200/300/400/600kHz - balances efficiency vs. EMI; dithering ±6% reduces spectral peaks
Current Limit Control	IPWM pin adjusts final OCP threshold from I²C-set value by duty cycle - enables analog dimming or adaptive load management
Protection Features	Hiccup OCP, auto-retry OVP (127% VREF trip), UVLO (5.5V rising), thermal shutdown (150°C) - ensures robust fault recovery in harsh environments
AEC-Q100 Grade	Grade 1 (−40°C to +125°C TJ) - certified for automotive powertrain and ADAS subsystems requiring extended temperature reliability
Package	QFN-27 (5mm×5mm) with wettable flanks - supports automated optical inspection (AOI) and high thermal dissipation (θJC = 6°C/W)

Pinout & Package

MPQ4214GU-AEC1-P is housed in a thermally enhanced QFN-27 (5mm × 5mm) package with an exposed thermal pad and wettable flanks for reliable solder joint inspection. The 27-pin top-side layout includes dedicated gate drivers (HG1/LG1/HG2/LG2), current-sense inputs (CSP/CSN/IAVGP/IAVGN), I²C interface (SCL/SDA/ADDR), interrupt (INT), enable (EN), soft-start (SS), and feedback (FB/COMP) pins.

Pin/Terminal	Circuit Role	Design Meaning
1 ADDR	I²C slave address configuration	Sets one of four I²C addresses (60H/62H/63H/66H) via AVDD-ratio voltage divider - avoids bus conflicts in multi-controller systems
4 INT	Open-drain fault interrupt output	Asserts low on OCP/OVP/OTP/PNG events; masked by default for PNG - enables system-level fault logging without polling
5 IPWM	Analog current limit modulation input	Multiplies I²C-set current limit by duty cycle (e.g., 71.5% → 52.5mV); internal 1MΩ pull-up to AVDD - supports real-time load adaptation
13–14 IAVGN/IAVGP	Average output current sense terminals	Dedicated differential pair for precise CC regulation; requires direct connection to output rail - isolates current sensing from switching noise
15 VOUT	Output voltage sense and VCC power source selector	Feeds VCC bias logic; selects VIN or VOUT as VCC source based on 8.8V threshold - ensures stable gate drive during startup/brownout
26 VIN	Main input supply and UVLO sense	UVLO threshold 5.5V (rising); supports direct connection to automotive battery - eliminates need for external supervisor IC

Key Features

Feature	Design Value
I²C programmability	Full VOUT (0.5–36V), VREF (0.5–2.047V in 1mV steps), slew rate, and OCP settings - enables firmware-controlled power sequencing without hardware changes
Four-switch buck-boost topology	Valley current control (buck) + peak current control (boost) - delivers <±3% load regulation and <100μs transient recovery across 0–5A step loads
Integrated VOUT discharge	Active pull-down when EN = low - ensures safe output ramp-down during shutdown, preventing backfeed into sensitive downstream circuitry
Wettable flank QFN-27	5mm×5mm footprint with side-wettable leads - enables AOI-compatible reflow and 6°C/W junction-to-case thermal resistance for 5A+ designs
AEC-Q100 Grade 1 compliance	Qualified over −40°C to +125°C junction temperature - meets automotive functional safety requirements for power conversion in infotainment and body control modules

Applications

USB Power Delivery

Automotive Infotainment Power

Use Scenario: USB Type-C port delivering 5V/9V/15V/20V profiles to laptops, monitors, and peripherals in vehicle docking stations.

IC Role / Device Role / Timing Role: Primary buck-boost controller regulating VBUS from 6V–40V battery input to programmable PD voltages with I²C host coordination.

Use Value: Eliminates discrete PD controller + DC-DC combo; achieves <±1% VOUT accuracy and <50mV droop during 0→3A load steps per USB PD spec.

Use Scenario: Powering 12V/24V display backlight and SoC rails in head-unit systems with wide battery voltage swing (9V–16V) and cold-crank immunity.

IC Role / Device Role / Timing Role: High-efficiency buck-boost regulator maintaining stable 5V/12V outputs during engine start-stop cycles and load-dump transients.

Use Value: AEC-Q100 Grade 1 rating and 6V startup ensure uninterrupted operation down to 6V battery; hiccup OCP prevents latch-up during short-circuit faults.

Industrial PC Power Supply

High-Power LED Driver

Use Scenario: Single-rail 24V input powering multiple isolated DC-DC stages (3.3V/5V/12V) in ruggedized IPCs deployed in factory automation.

IC Role / Device Role / Timing Role: Central non-isolated buck-boost controller feeding downstream isolated converters, with programmable soft-start to manage inrush.

Use Value: FCCM mode ensures continuous conduction under light loads; 400kHz switching enables compact magnetics while maintaining >92% efficiency at 3A.

Use Scenario: Constant-current driver for 40W–100W automotive LED headlamps or architectural lighting with dimming via IPWM.

IC Role / Device Role / Timing Role: Buck-boost CC regulator using IAVGP/IAVGN sense and IPWM for analog dimming, with OVP protecting LEDs from open-circuit failure.

Use Value: 0.6A-step programmable current limit and 48–71.5% IPWM dimming range deliver precise luminance control; thermal shutdown prevents LED thermal runaway.

Equivalent & Alternatives

The following parts are listed as comparable options for similar buck-boost controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM5175RHFTR	Non-AEC-Q100; no I²C interface; fixed 1.2V reference; requires external current-sense amplifier for CC mode	Targeted at industrial/commercial power supplies only; lacks automotive qualification and digital programmability	Select if cost-sensitive commercial design requires proven 4-switch topology without automotive certification or firmware control
TPS63802DLAR	Lower 3.5V–18V input range; max 12V output; no IPWM or IAVGP/IAVGN pins; no AEC-Q100 option	Designed for portable electronics (USB-C accessories, tablets); unsuitable for automotive battery input or >12V LED strings	Choose only for space-constrained consumer devices needing integrated MOSFETs and <2A output - not a drop-in replacement

Compared with LM5175RHFTR and TPS63802DLAR, MPQ4214GU-AEC1-P uniquely combines AEC-Q100 Grade 1 qualification, full I²C programmability (VOUT/VREF/slew/OCP), and dedicated average current sense (IAVGP/IAVGN) for robust CC LED and USB PD applications - neither alternative supports this feature set in an automotive-grade package.

Availability

MPQ4214GU-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment systems, USB-C vehicle docking stations, and high-power LED lighting requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.

Supply support for MPQ4214GU-AEC1-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 power management ICs, with core expertise in DC-DC conversion, motor drivers, and LED controllers.

The MPQ4214 product line delivers automotive-grade synchronous buck-boost controllers optimized for USB PD, infotainment, and LED lighting applications where wide input range, digital programmability, and AEC-Q100 reliability are mandatory.

FAQ

What is the minimum startup voltage for MPQ4214GU-AEC1-P?

The MPQ4214GU-AEC1-P requires a minimum 6V input to initiate startup, verified across −40°C to +125°C junction temperature. Below 6V, the device remains in UVLO state with EN disabled and all gate drivers inactive. This ensures reliable cold-crank operation in 12V automotive systems where battery voltage may dip to 6.5V.

How does the IPWM pin adjust the output current limit?

The IPWM pin scales the I²C-programmed current limit threshold linearly with its duty cycle: final limit = I²C setting × (IPWM duty). For example, with ILIM bits = 111b (68mV nominal), a 71.5% IPWM duty yields ~48.6mV effective limit. The pin features a 1MΩ internal pull-up to AVDD and accepts 0.4V–1.2V logic thresholds.

Can MPQ4214GU-AEC1-P operate in forced continuous conduction mode (FCCM)?

Yes, MPQ4214GU-AEC1-P supports FCCM via I²C register configuration. In FCCM, the controller maintains continuous inductor current regardless of load, eliminating audible switching noise and improving light-load regulation stability - critical for noise-sensitive infotainment audio subsystems.

What protection features are implemented for overvoltage conditions?

The device implements auto-retry overvoltage protection (OVP) triggered at 127% of VREF (e.g., 127% × 2.047V = 2.60V) on the FB pin. Upon detection, it disables switching and retries after a hiccup delay. Recovery occurs when VFB falls below 111% VREF. No external components are required - the function is fully integrated and AEC-Q100 validated.

Is the QFN-27 package compatible with standard SMT reflow profiles?

Yes, the QFN-27 (5mm×5mm) package with wettable flanks is qualified for JEDEC J-STD-020D reflow profiles. Its MSL Level 2 rating allows floor life up to 1 year at ≤30°C/60% RH. The exposed thermal pad must be soldered to a solid copper thermal plane with ≥6 vias for optimal thermal performance in automotive applications.

Does MPQ4214GU-AEC1-P support output voltage slew-rate control?

Yes, slew-rate control is implemented via I²C register SR[1:0], selecting 25–170 mV/ms. This limits dV/dt during VOUT transitions (e.g., 5V→15V), reducing inrush stress on output capacitors and downstream loads - essential for USB PD compliance and LED string turn-on smoothness.

What is the role of the VOUT pin beyond voltage sensing?

The VOUT pin serves dual functions: it senses output voltage for regulation and selects the VCC power source. When VOUT exceeds 8.8V, VCC is powered from VOUT; otherwise, VCC draws from VIN. This ensures stable gate drive during battery brownout (VIN < 8.8V) while maximizing efficiency at higher output voltages.

MPQ4214GU-AEC1-P Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: 27-VFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Type:: Transistor Driver

Function:: Step-Up/Step-Down

Output Configuration:: Positive

Topology:: Buck-Boost

Number of Outputs:: 1

Output Phases:: 2

Voltage - Supply (Vcc/Vdd):: 5V ~ 40V

Frequency - Switching:: 200kHz, 300kHz, 400kHz, 600kHz

Duty Cycle (Max):: -

Synchronous Rectifier:: Yes

Clock Sync:: No

Serial Interfaces:: I2C

Control Features:: Current Limit, Dead Time Control, Dimming, Enable, Power Good, Slew Control, Soft Start

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount, Wettable Flank

Supplier Device Package:: 27-QFN (5x5)

MPQ4214GU-AEC1-P FAQ

1.How can I place an order for MPQ4214GU-AEC1-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MPQ4214GU-AEC1-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 MPQ4214GU-AEC1-P reliable?

The price and inventory of MPQ4214GU-AEC1-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ4214GU-AEC1-P is usually 5 days.

3.What payment methods are accepted for MPQ4214GU-AEC1-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4214GU-AEC1-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPQ4214GU-AEC1-P?

MPQ4214GU-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPQ4214GU-AEC1-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 MPQ4214GU-AEC1-P?

For technical support, including MPQ4214GU-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4214GU-AEC1-P requirements.

6.How does Aetrix verify that MPQ4214GU-AEC1-P is sourced from the original manufacturer or authorized distributors?

All MPQ4214GU-AEC1-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 MPQ4214GU-AEC1-P meets industry standards.

7.What is the process for return or replacement of MPQ4214GU-AEC1-P?

All MPQ4214GU-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4214GU-AEC1-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 MPQ4214GU-AEC1-P part is unused and in its original packaging.

Return procedure for MPQ4214GU-AEC1-P:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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