Monolithic Power Systems Inc. MPQ5031GRE-0015-AEC1-P

Overview

MPQ5031GRE-0015-AEC1-P from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, single-port USB Type-C PD 3.0 controller for DFP (source-only) applications. It integrates BMC physical layer, protocol engine, and policy engine; supports up to 100W PPS delivery; provides VBUS isolation via N-channel MOSFET driver (VDRV); and features dual NTC inputs for thermal monitoring of Type-C receptacle and PCB. It targets automotive-grade USB charging ports and PD hubs requiring robust legacy charging compatibility.

For engineers reviewing the MPQ5031GRE-0015-AEC1-P datasheet, MPQ5031GRE-0015-AEC1-P pinout, MPQ5031GRE-0015-AEC1-P application, or MPQ5031GRE-0015-AEC1-P equivalent, key selection criteria include its AEC-Q100 qualification, integrated PPS support with USB-IF TID 2316 certification (100W), high-voltage CC/DP/DM I/O tolerance (–0.3V to +24V), 100µA standby IQ, and QFN-20 wettable flank package for automotive reflow inspection.

Technical Context

The MPQ5031GRE-0015-AEC1-P implements a full USB PD 3.0 stack-including BMC transceiver, protocol layer, and policy engine-within a single die, eliminating external firmware dependencies. Its DFP-only architecture enforces strict source-side control over PDO negotiation, power role swapping, and VCONN management, with hardware-enforced safety timers (e.g., EN Off Timer up to 120 minutes).

It embeds dual independent NTC comparators for real-time thermal event detection on Type-C connectors and PCB traces, and integrates high-voltage I/O drivers for CC1/CC2/DP/DM pins capable of withstanding short-to-battery faults. The device also includes a 1.8V internal LDO (VDD) and supports flexible OTP-configurable PDO lists via I2C interface.

Key Specifications

Pinout & Package

MPQ5031GRE-0015-AEC1-P is housed in a QFN-20 (4mm × 4mm) package with exposed thermal pad and wettable flanks, optimized for automotive thermal performance and solder-joint reliability verification.

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-0015-AEC1-P uniquely combines AEC-Q100 Grade 1 rating, 100W PPS certification, dual NTC monitoring, and hardware-based legacy charging detection-making it the only option qualified for demanding automotive DFP applications requiring both safety and interoperability.

Availability

MPQ5031GRE-0015-AEC1-P is available at Aetrix Electronics and suitable for automotive USB charging ports, infotainment hubs, telematics control units, and ADAS camera interfaces requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant traceability.

Supply support for MPQ5031GRE-0015-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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MPQ5031 belongs to MPS's automotive-qualified USB PD controller product line, engineered specifically for DFP-only applications in vehicles requiring robust legacy charging support, PPS compliance, and thermal fault resilience.

FAQ

What AEC-Q100 grade does MPQ5031GRE-0015-AEC1-P meet, and what does that imply for automotive use?

MPQ5031GRE-0015-AEC1-P meets AEC-Q100 Grade 1, specifying operation from –40°C to +125°C junction temperature. This qualifies it for under-dash, center-console, and other non-engine-compartment automotive locations where ambient temperatures remain below 105°C but thermal transients and long-term reliability are critical. It undergoes stress testing including HTOL, TC, and ESD per AEC standards.

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

When VBATT falls below 11.2V (configurable via GPIO4), the MPQ5031 automatically reduces PDO capability-e.g., limiting 20V/5A to 15V/3A-to maintain system stability. This behavior is implemented in hardware and requires no host MCU intervention, enabling fail-safe power budgeting during cranking or alternator failure scenarios.

Can MPQ5031GRE-0015-AEC1-P support USB PD sink negotiation or dual-role ports?

No. MPQ5031GRE-0015-AEC1-P is strictly a DFP (source-only) controller. It lacks sink negotiation capability, VCONN sourcing for UFP roles, or power role swap support. Its policy engine is hardwired for provider-only operation, making it unsuitable for DRP or UFP applications.

What is the purpose of the VDRV pin, and what external component does it drive?

VDRV is a dedicated gate driver output that directly controls an external N-channel MOSFET placed in the VBUS path. When a sink attaches, VDRV turns on the MOSFET to enable power flow; upon detachment or fault, it drives the MOSFET off to isolate VBUS within <500ms, meeting USB Type-C specification requirements for safe disconnect.

Does MPQ5031GRE-0015-AEC1-P require external firmware or host processor interaction for basic PD operation?

No. All USB PD 3.0 negotiation-including BMC encoding/decoding, message parsing, policy decisions, and PDO selection-is handled autonomously by the integrated hardware stack. Basic operation requires only correct I2C configuration at startup; runtime adjustments (e.g., PDO changes) can be made via I2C but are not mandatory.

How is thermal protection implemented using the NTC pins?

The MPQ5031 has two dedicated NTC inputs (NTC and NTC2) that monitor voltage dividers formed with external thermistors. When the sensed voltage crosses a programmable threshold (e.g., 9.1% of VCC ≈100°C), it triggers automatic load shedding-reducing VBUS voltage or disabling output-without host MCU involvement, providing hardware-level thermal safety.

What evaluation kit is available, and what does it include for validating 100W PPS operation?

The EVKT-MPQ5031 evaluation kit includes the EVQ5031-4230-RE-00A board (MPQ5031 + MPQ4230 100W buck converter), USB-to-I2C interface (EVKT-USBI2C-02), and pre-programmed MPQ5031GRE-0000-AEC1 ICs. It supports full 100W PPS validation with GUI-based PDO configuration and real-time telemetry via I2C, matching USB-IF TID 2316 test conditions.