Monolithic Power Systems Inc. MPQ5029GD-C-AEC1-Z

Overview

MPQ5029GD-C-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified automotive USB Type-C port controller integrating a 25mΩ current-limit switch, BC1.2/DCP/QC3.0 charging mode detection, and short-to-battery protection on CC1/CC2/DP/DM/OUT pins. It delivers 3A continuous output at 5V, supports 5V/9V/12V QC3.0 transitions via ADJ-controlled upstream buck regulation, and operates across -40°C to +125°C junction temperature in vehicle infotainment and center console charging ports.

For engineers reviewing the MPQ5029GD-C-AEC1-Z datasheet, MPQ5029GD-C-AEC1-Z pinout, MPQ5029GD-C-AEC1-Z application, or MPQ5029GD-C-AEC1-Z equivalent, key selection criteria include its QFN-14 (2mm×3mm) package with validated short-to-battery protection on all I/Os, programmable 3.55A current limit (±8%), line drop compensation up to 400mV at 3A, ±4kV HBM ESD rating, and dual OVP modes selectable via OVP pin configuration.

Technical Context

The MPQ5029 implements a dual-stage UVLO (2.4V and 2.85V thresholds) to sequence ADJ-based upstream voltage regulation before enabling the integrated 25mΩ MOSFET. Its ADJ pin sinks up to 500µA to dynamically adjust the upstream DC/DC converter's FB node, enabling smooth 5V→9V→12V transitions per QC3.0 without external DACs or controllers.

Charging mode detection uses dedicated analog comparators for BC1.2 DCP (40Ω DP/DM short), 1.2V/1.2V mode (1.2V ±0.1V output), divider mode (2.7V ±0.15V), and QC3.0 handshake (0.3V data detect threshold, 2.0V output select reference). Protection logic combines hiccup-mode OCP (2ms on / 2s off), input OVP with active discharge (115% VIN threshold), and thermal shutdown at 150°C with 25°C hysteresis.

Key Specifications

Pinout & Package

MPQ5029GD-C-AEC1-Z is housed in a thermally enhanced QFN-14 package (2mm × 3mm, 0.5mm pitch) with exposed thermal pad. The package supports automated optical inspection and provides θJA = 38°C/W on a 4-layer evaluation board.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB charging port controller applications.

Compared with MPQ5029GD-AEC1-Z, the -C variant adds USB-IF certification and guaranteed Type-C DFP behavior; versus NCP81239MNTXG, it eliminates host MCU dependency for QC3.0, reducing firmware complexity and BOM cost by integrating all charging protocol state machines.

Availability

MPQ5029GD-C-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment systems, center console charging hubs, and telematics modules requiring stable component supply with AEC-Q100 Grade 1 qualification, USB-IF Type-C certification, and production-ready thermal performance.

Supply support for MPQ5029GD-C-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 for automotive, industrial, and consumer markets, with design centers in the US, China, and Taiwan.

The MPQ5029 belongs to MPS's automotive-qualified USB power delivery controller product line, engineered specifically for robust, certification-ready USB charging in vehicles-emphasizing integrated protection, multi-standard compatibility, and minimal external component count.

FAQ

What USB charging standards does MPQ5029GD-C-AEC1-Z natively support without external firmware?

It supports BC1.2 DCP (including divider and 1.2V/1.2V modes), QC3.0 voltage negotiation (3.6–12V in 200mV steps), and USB Type-C 5V@3A DFP operation-all implemented in hardware with no host processor or firmware required. Detection is performed by on-chip analog comparators and state machines.

How does the ADJ pin enable QC3.0 voltage transitions without external DACs?

The ADJ pin sinks a precisely controlled current (up to 500µA) into the upstream DC/DC converter's FB node. By gradually increasing this sink current, it forces the upstream regulator to raise its output voltage in smooth, stepwise increments-enabling 5V→9V→12V transitions that meet QC3.0 timing and ripple requirements without external digital control.

What is the functional difference between MPQ5029GD-C-AEC1-Z and MPQ5029GD-AEC1-Z?

The -C suffix denotes USB-IF Type-C certification, confirming validated interoperability with certified Type-C cables and devices. Electrically identical, the -C version guarantees correct CC pin behavior, VCONN power delivery, and detach detection per USB Type-C specification-critical for production automotive systems requiring compliance documentation.

Can MPQ5029GD-C-AEC1-Z protect against 12V battery shorts on CC1/CC2 pins in automotive environments?

Yes-it features integrated short-to-battery protection on CC1, CC2, DP, DM, and OUT pins, validated to withstand direct 12V shorts without latch-up or damage. This is achieved via internal clamping circuitry and is specified in the absolute maximum ratings (CC1/CC2: -0.3V to +24V).

What is the minimum external component count required for basic Type-C 5V@3A operation?

A fully functional Type-C 5V@3A implementation requires only five components: one ILIM resistor (1.78kΩ), one DROP resistor (1kΩ), one VCC bypass capacitor (4.7µF), one NTC thermistor network (two resistors), and one OVP pull-down resistor (if grounding OVP pin). No external FETs, op-amps, or microcontrollers are needed.

How does line drop compensation maintain 5V regulation across long PCB traces?

By sensing output current via the ILIM resistor, the MPQ5029 increases the ADJ sink current linearly with load-causing the upstream DC/DC converter to raise its output voltage proportionally. With RDROP = 1kΩ, it adds up to 400mV of boost at 3A, compensating for IR drop in traces up to 133mΩ (400mV/3A).

Is thermal shutdown recovery automatic after temperature normalizes?

Yes-thermal shutdown at 150°C is self-resetting. Once junction temperature falls below 125°C (150°C – 25°C hysteresis), the device automatically resumes normal operation without requiring EN pin cycling or power cycle, ensuring uninterrupted charging in transient thermal conditions.