Monolithic Power Systems Inc. MPQ5031GRE-0001-AEC1-Z

Overview

MPQ5031GRE-0001-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified USB Type-C port controller for DFP (downstream-facing port) source-only applications, supporting USB PD3.0, PPS, BC1.2, QC3.0, and Huawei FCP up to 100W. It integrates BMC physical layer, protocol engine, and policy engine in a QFN-20 (4mm×4mm) wettable flanks package, with dual NTC inputs for thermal monitoring and high-voltage CC/DP/DM pins rated to +24V.

For engineers reviewing the MPQ5031GRE-0001-AEC1-Z datasheet, MPQ5031GRE-0001-AEC1-Z pinout, MPQ5031GRE-0001-AEC1-Z application, or MPQ5031GRE-0001-AEC1-Z equivalent, this device delivers automotive-grade USB PD source control with integrated VCONN switching, load-shedding on battery low detection, I²C master/slave interface, and configurable PDO lists - critical for infotainment head units, telematics gateways, and USB-C charging ports in vehicles requiring robust short-to-battery protection and thermal safety.

Technical Context

The MPQ5031 implements a full USB PD3.0 stack including BMC transceiver, protocol layer, and policy engine - enabling autonomous negotiation of voltage/current via CC1/CC2 without host MCU intervention. Its dual NTC inputs trigger load shedding at 9.1% VCC (≈4.55V at 5V supply), and its VDRV gate driver controls external N-channel MOSFETs for VBUS isolation during detach events.

It supports dynamic power sharing between two USB PD ports via GPIO2-based signaling, reduces PDO capability when VBATT falls below 1.12V (configurable), and features high-voltage tolerant pins (CC1/CC2/DP/DM) with ±2kV HBM ESD rating and short-to-battery resilience - essential for automotive 12V/24V battery environments where transient overvoltage and thermal runaway risks are elevated.

Key Specifications

Pinout & Package

MPQ5031GRE-0001-AEC1-Z is housed in a QFN-20 (4mm×4mm) package with exposed thermal pad and wettable flanks, optimized for automotive thermal dissipation and AOI-compatible assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STUSB4500QTR and TUSB8041A, MPQ5031GRE-0001-AEC1-Z uniquely combines AEC-Q100 qualification, dual NTC monitoring, battery-aware PDO scaling, and autonomous PD3.0/PPS negotiation - making it the only drop-in solution for automotive DFP ports requiring functional safety-aware thermal and power management without host MCU dependency.

Availability

MPQ5031GRE-0001-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment systems, telematics control units, and ADAS camera hubs requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant USB-C power delivery.

Supply support for MPQ5031GRE-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 converters, motor drivers, and USB power delivery solutions.

The MPQ5031 belongs to MPS's automotive-qualified USB PD controller product line, designed specifically for DFP source applications in vehicles - emphasizing robustness against battery transients, thermal fault containment, and seamless integration with MPS DC/DCs like MPQ4214 and MPQ4230.

FAQ

What USB PD profiles does MPQ5031GRE-0001-AEC1-Z support out-of-the-box?

The MPQ5031 supports USB PD3.0 with Programmable Power Supply (PPS) profiles, including 5V/3A, 9V/3A, 15V/3A, 20V/5A, and APDO ranges from 3.3V to 21V. It ships with default PDOs stored in OTP, and all profiles are field-configurable via I²C without requiring firmware reprogramming.

How does the MPQ5031 handle low-battery conditions in automotive systems?

When VBATT falls below 1.12V (rising threshold), the MPQ5031 automatically reduces PDO capability - for example, limiting 20V/5A to 15V/3A - to prevent system brownout. This behavior is triggered by GPIO4 configured as VBATT monitor and is independent of I²C host control.

Can MPQ5031GRE-0001-AEC1-Z operate without an external MCU?

Yes - the MPQ5031 integrates a complete USB PD3.0 stack (PHY, protocol, policy engine) and can autonomously negotiate contracts, manage VBUS, and execute legacy charging protocols without MCU intervention. An MCU is only needed for advanced customization via I²C.

What is the purpose of the wettable flanks on the QFN-20 package?

The wettable flanks enable automated optical inspection (AOI) of solder joints during SMT assembly - a critical requirement for automotive manufacturing. They provide visible side-wall solder fillets that verify reflow quality and detect head-in-pillow or insufficient wetting defects.

Does MPQ5031 support USB 2.0 data pass-through in addition to power delivery?

Yes - the DP and DM pins support full USB 2.0 data signaling and BC1.2 CDP handshaking. However, the MPQ5031 itself does not act as a USB 2.0 hub; it enables data path control and charging negotiation while routing D+/D− signals to an external USB transceiver or host controller.

How is thermal protection implemented using the NTC pin?

The NTC pin monitors a thermistor divider network (RP = 47kΩ, RNTC = 4.72kΩ at 100°C). When VNTC drops to 9.1% of VCC (≈4.55V), the MPQ5031 initiates load shedding - disabling VBUS and asserting GPIO7 for external discharge - with recovery at 16.7% VCC (≈8.35V) to prevent thermal cycling.

Is MPQ5031GRE-0001-AEC1-Z compatible with non-MPS DC/DC controllers?

Yes - the MPQ5031 interfaces with any buck, buck-boost, or flyback controller via VDRV gate drive, GPIO7 discharge control, and I²C configuration. Reference designs use MPQ4214/MPQ4230, but interoperability with TI, ON Semi, or Infineon DC/DCs is confirmed through standard analog/digital signaling.