Monolithic Power Systems Inc. MP5029GD-C-Z

Overview

MP5029GD-C-Z from Monolithic Power Systems is a fully integrated USB Type-C port controller with embedded 25mΩ current-limit switch, supporting BC1.2 CDP/DCP, QC3.0 (3.6V–12V), and Type-C 5V@3A DFP mode. It delivers 3A continuous output, integrates line drop compensation (285mV at 3A), and provides short-to-battery protection on CC1/CC2/DP/DM/OUT pins - deployed in automotive infotainment USB hubs and industrial docking stations.

For engineers reviewing the MP5029GD-C-Z datasheet, MP5029GD-C-Z pinout, MP5029GD-C-Z application, or MP5029GD-C-Z equivalent, key selection criteria include its dual-mode (Type-C + legacy Type-A) compatibility, MODE-pin programmable charging protocol selection (CDP/DCP/QC3.0), ±8kV HBM ESD rating on CC pins, hiccup-mode OCP, and QFN-14 wettable flanks package for automated optical inspection.

Technical Context

The MP5029GD-C-Z implements a dual-stage UVLO (3.0V and 3.1V thresholds) to sequence ADJ regulation before MOSFET turn-on, enabling precise 5.1V output regulation via FB pin current sinking. Its auto-detection logic evaluates DP/DM voltage windows (e.g., 0.34–0.41V for CDP activation, 0.78–0.88V for deactivation) and CC1/CC2 voltage thresholds (0.85V/2.45V for VBUS enable, 2.75V for detach) without host intervention.

QC3.0 voltage transitions are executed via controlled ADJ current ramping - not PWM or DAC - allowing smooth 5V→9V→12V slewing (<60ms glitch time) while maintaining data-line integrity (500MHz analog switch bandwidth). Fault signaling uses open-drain FLT with 150mV low-level voltage at 1mA sink, synchronized to hiccup OCP (2ms on / 2s off) and thermal shutdown (150°C).

Key Specifications

Pinout & Package

MP5029GD-C-Z is housed in a QFN-14 (2mm × 3mm) package with wettable flanks for solder joint inspection. The exposed thermal pad (Pin 12) must be connected to PCB ground plane for thermal management.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS65987D and IP2721, MP5029GD-C-Z uniquely combines BC1.2 CDP/DCP, QC3.0, and Type-C 5V@3A DFP in a single chip with hardware-mode selection and integrated VCONN - reducing firmware complexity and component count in mid-tier embedded systems.

Availability

MP5029GD-C-Z is available at Aetrix Electronics and suitable for automotive infotainment hubs, industrial docking stations, and medical device docks requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for MP5029GD-C-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 design centers in the US, China, and Taiwan.

The MP5029 product line targets USB power delivery infrastructure in space-constrained embedded systems, emphasizing integration of charging protocol detection, current limiting, and Type-C configuration logic without host processor dependency.

FAQ

What is the function of the ADJ pin beyond line drop compensation?

The ADJ pin serves two critical roles: first, it sinks current from the upstream DC/DC converter's FB node to regulate output voltage to 5.1V under no-load conditions; second, during QC3.0 operation, it ramps current to adjust VOUT smoothly to 9V or 12V. Its dual use eliminates need for external DAC or digital interface.

Can MP5029GD-C-Z support USB Power Delivery (PD) protocol?

No. MP5029GD-C-Z does not implement USB PD communication (BMC signaling over CC lines). It supports QC3.0, BC1.2 CDP/DCP, and Type-C 5V@3A DFP only. For PD compliance, consider MPS MPQ4572 or third-party PD controllers.

How does the MODE pin affect QC3.0 functionality?

When MODE is tied to VCC, QC3.0 is enabled alongside DCP mode; when floated, DCP remains active but QC3.0 is disabled; when grounded, only CDP mode operates. This hardware-selectable behavior removes firmware dependencies for protocol selection in cost-sensitive designs.

What is the purpose of the 7µA internal pull-up on the EN pin?

The 7µA internal pull-up allows EN to be left floating for automatic startup - simplifying design in systems without dedicated enable control. It pulls EN to ~3.5V internally, meeting the 2.0V minimum threshold for logic-high recognition without external components.

Does MP5029GD-C-Z require external resistors for BC1.2 detection?

No. All BC1.2 detection circuits - including divider mode (2.7V), 1.2V/1.2V mode, and short-mode - are implemented internally. Only standard USB termination resistors (5.1kΩ on CC pins) are needed for Type-C detection; no external DP/DM biasing resistors are required.

What thermal derating applies above 25°C ambient?

With θ_JA = 38°C/W on a 4-layer EVB, junction temperature rises 38°C per watt of dissipation. At 3A output and 5V input, power loss is ~225mW (I²R), resulting in ~8.5°C rise - well below 125°C max operating junction temperature even at 85°C ambient.

Is the QFN-14 package compatible with standard reflow profiles?

Yes. The QFN-14 (2mm×3mm) with wettable flanks meets IPC/JEDEC J-STD-020D moisture sensitivity level 3 and supports peak reflow temperatures up to 260°C. Wettable flanks enable automated optical inspection of solder fillets without X-ray.