Monolithic Power Systems Inc. MPQ4242GVE-0001-AEC1-Z

Overview

MPQ4242GVE-0001-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, fully integrated USB PD 3.0 sourcing solution with integrated 4-switch buck-boost converter and PD controller. It delivers up to 5A continuous output current across 3.3V–22.5V output range, supports PPS, QC 3.0, Huawei FCP, and BC1.2 charging protocols, and targets automotive USB-C power delivery ports requiring robust thermal management and dual-port power sharing.

For engineers reviewing the MPQ4242GVE-0001-AEC1-Z datasheet, MPQ4242GVE-0001-AEC1-Z pinout, MPQ4242GVE-0001-AEC1-Z application, or MPQ4242GVE-0001-AEC1-Z equivalent, this device is selected for its integrated buck-boost architecture, configurable 250/420 kHz switching frequency with spread spectrum, ±5% CC current limit accuracy, QFN-22 wettable flank package, and native support for low-battery and over-temperature PD power management state transitions.

Technical Context

The MPQ4242 implements a synchronous 4-switch buck-boost topology with internal high-side and low-side power switches (R_DS(ON) = 16.3 mΩ / 41.5 mΩ / 15 mΩ / 15.3 mΩ), enabling seamless transition between buck, boost, and buck-boost modes across 4.8V–36V input and 3.3V–22.5V output ranges. Its embedded USB PD 3.0 controller handles BMC communication, PDO negotiation (7-profile list), and PPS voltage stepping with <3.7 µs unit interval timing.

It integrates dual CC line detection (CC1/CC2), DP/DM data path control, I²C slave interface (400 kHz), and hardware-based fault protection including CC OCP, VBUS OVP (24–26 V absolute), thermal shutdown (175°C), and GND-to-VBATT short detection. Power sharing logic enables coordinated load balancing when two devices operate in dual-port configuration.

Key Specifications

Pinout & Package

MPQ4242GVE-0001-AEC1-Z is housed in a thermally enhanced QFN-22 (4mm × 5mm) package with exposed thermal pad and wettable flanks for automotive-grade solder joint inspection and thermal performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB PD sourcing applications.

Compared with MPQ4242GVE-0001-AEC1-Z, the -0000-AEC1-Z offers higher fixed power capability but no runtime I²C reconfiguration, while the STUSB4500QTR provides architectural flexibility at the cost of integration, board space, and thermal management complexity.

Availability

MPQ4242GVE-0001-AEC1-Z is available at Aetrix Electronics and suitable for automotive front/rear console USB-C ports, telematics control units, and commercial fleet docking stations requiring stable component supply, AEC-Q100 qualification, and production-ready USB PD 3.0 compliance.

Supply support for MPQ4242GVE-0001-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 core expertise in DC-DC conversion, motor drivers, and USB power delivery solutions.

The MPQ4242 belongs to MPS's automotive-qualified USB PD product line, designed specifically for robust, integrated power sourcing in vehicles-emphasizing AEC-Q100 reliability, protocol compliance, and minimal external component count.

FAQ

What is the key functional difference between MPQ4242GVE-0001-AEC1-Z and MPQ4242GVE-0000-AEC1-Z?

The MPQ4242GVE-0001-AEC1-Z is factory-configured for 45W operation and supports full I²C runtime reconfiguration of PDOs, power sharing thresholds, and LED/PWM settings. In contrast, the -0000-AEC1-Z is one-time programmable for 60W and locks configuration after initial OTP write-making it suitable for fixed-power applications where runtime flexibility is unnecessary.

Does MPQ4242GVE-0001-AEC1-Z support USB PD 3.1 Extended Power Range (EPR)?

No. The MPQ4242GVE-0001-AEC1-Z implements USB PD 3.0 specification and supports PPS up to 22.5V/5A (45W). It does not support EPR's 28V–48V voltage range or associated communication extensions, as confirmed by its documented PDO list, BMC timing parameters (tUI = 3.03–3.7 µs), and absence of EPR-specific register fields in the datasheet.

How is thermal performance validated for automotive under-hood deployment?

Thermal validation was performed per AEC-Q100 Grade 1 requirements using JEDEC JESD51-7 4-layer PCB test board. Measured θJA = 44°C/W and θJC = 9°C/W confirm junction temperature remains ≤150°C at 45W output with 12V input and 25°C ambient-validated across −40°C to +125°C ambient range with 20°C hysteresis thermal shutdown.

Can MPQ4242GVE-0001-AEC1-Z operate without an external microcontroller?

Yes. It operates autonomously using factory-programmed OTP settings and built-in state machines for PD negotiation, buck-boost mode control, and fault response. An MCU is optional-only required if dynamic I²C reconfiguration (e.g., changing PDOs mid-operation) or custom LED signaling is needed.

What protection features prevent damage during USB-C hot-plug events?

The device integrates CCx/DP/DM short-to-VBUS and short-to-VBATT detection, 8kV HBM ESD rating on CC/DP/DM pins, hiccup-mode current limiting, output OVP (24–26V absolute), and VBUS discharge control. These features collectively suppress transients, isolate faults within microseconds, and ensure safe restart after plug/unplug cycles.

Is the QFN-22 package compatible with standard automotive reflow profiles?

Yes. The QFN-22 (4mm × 5mm) package with wettable flanks is qualified for lead-free reflow per J-STD-020D. Its MSL Level 1 rating allows unlimited floor life at ≤30°C/60% RH, and the exposed thermal pad supports standard stencil design and solder paste volume for automotive-grade thermal and mechanical reliability.

How does the dual-port power sharing logic coordinate between two MPQ4242 devices?

Hardware power sharing uses dedicated POWER_SHARE1 (active-low) and POWER_SHARE2 (active-high) pins. When one device detects overload or thermal fault, it asserts its share pin, causing both devices to reduce output power to the PS_PDP_THD threshold-enabling deterministic, MCU-free load balancing without communication overhead or timing skew.