Monolithic Power Systems Inc. MP5029GD-C-P

Overview

MP5029GD-C-P from Monolithic Power Systems is a fully integrated USB Type-C port controller with embedded 25mΩ current-limit switch, supporting CDP, BC1.2 DCP (divider/1.2V/1.2V), and QC3.0 (3.6–12V) charging modes. It delivers 3A continuous output, integrates CC1/CC2 configuration channel logic, and provides 5V @ 3A DFP mode for host-side USB-C power delivery. Used in portable device docking stations requiring auto-negotiated fast-charging compliance.

For engineers reviewing the MP5029GD-C-P datasheet, MP5029GD-C-P pinout, MP5029GD-C-P application, or MP5029GD-C-P equivalent, this device enables seamless USB-C/USB-A dual-port charging control with integrated OVP, hiccup OCP, thermal shutdown, short-to-battery protection, and line-drop compensation - critical for compact, thermally constrained embedded power hubs.

Technical Context

The MP5029GD-C-P implements a dual-stage UVLO (3.0V/3.1V thresholds) to sequence ADJ regulation before MOSFET turn-on, ensuring precise 5.1V output under load via FB-sinking current control. Its MODE pin selects between CDP (GND), DCP (float), or QC3.0-enabled DCP (VCC), directly configuring BC1.2 handshake behavior and DP/DM voltage levels.

It features dedicated CC1/CC2 analog comparators with 100–200ms debounce timers, VCONN power sourcing up to 1W, and a 500MHz data switch bandwidth for USB 2.0 signal integrity. Fault detection includes open-drain FLT assertion for over-current (2ms hiccup on-time), input OVP (5.75V typ), and thermal shutdown at 150°C with 25°C hysteresis.

Key Specifications

Pinout & Package

MP5029GD-C-P is housed in a QFN-14 (2mm × 3mm) package with wettable flanks, enabling reliable solder joint inspection and enhanced thermal performance. The exposed pad must be connected to PGND for optimal thermal and electrical performance.

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-P uniquely combines BC1.2/QC3.0 auto-detection, 25mΩ switch, line drop compensation, and ±8kV CC-pin ESD in a 14-pin QFN - delivering the highest integration for firmware-free, industrial-grade USB-C charging ports below 15W.

Availability

MP5029GD-C-P is available at Aetrix Electronics and suitable for USB-C automotive docks, industrial USB hubs, medical peripheral charging ports, and monitor-integrated hubs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP5029GD-C-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 focus on efficiency, integration, and reliability for industrial, automotive, and computing applications.

The MP5029GD-C-P belongs to MPS's USB charging port controller product line, engineered specifically to replace multi-chip solutions in space-constrained, thermally demanding USB-C power delivery systems requiring zero-firmware fast-charging compliance.

FAQ

What charging protocols does MP5029GD-C-P support without external firmware?

MP5029GD-C-P natively supports BC1.2 CDP and DCP (including divider mode, 1.2V/1.2V mode), QC3.0 (3.6–12V), and USB-C 5V/3A DFP mode - all implemented in hardware with no MCU or software required. Detection is performed via analog comparators on DP/DM/CC pins and automatic state transitions based on voltage thresholds and timing windows.

How does the ADJ pin function in line drop compensation versus QC3.0 voltage scaling?

In 5V operation, ADJ sinks current proportional to load to raise upstream DC/DC output by up to 400mV - compensating for IR drop. During QC3.0, ADJ similarly sinks controlled current to ramp VOUT to 9V or 12V, using the same FB-sinking architecture but with different timing and voltage window detection on DP/DM to trigger the transition.

Can MP5029GD-C-P drive a USB-C port in both source and sink roles?

No - MP5029GD-C-P operates exclusively as a downstream-facing port (DFP) controller. It sources VBUS and negotiates power delivery as a host or hub, but lacks the policy engine, PD PHY, or bidirectional CC logic required for UFP (sink) or DRP (dual-role) operation. It does not support USB PD communication.

What is the purpose of the MODE pin, and what happens when it's left floating?

The MODE pin selects charging behavior: GND = CDP mode, VCC = DCP + QC3.0 enabled, and floating = DCP mode only (QC3.0 disabled). When floated, internal bias sets it to DCP, allowing BC1.2-compliant wall-charger emulation without QC3.0 negotiation - ideal for legacy device compatibility.

Does MP5029GD-C-P provide VCONN power, and what is its maximum capability?

Yes - MP5029GD-C-P supplies VCONN from its IN pin through an internal current-limited path, delivering up to 1W (e.g., 5V@200mA) to USB-C plug electronics such as e-markers. This eliminates the need for a separate VCONN regulator in dock or hub designs.

How is short-to-battery protection implemented on CC1, CC2, DP, and DM pins?

Each of these pins includes dedicated high-voltage input stages rated to 24V absolute max, with internal clamping and current limiting that prevents latch-up or damage when shorted to 12–14V battery rails. Fault detection triggers FLT assertion and disables affected paths while maintaining core USB switching functionality.

What thermal protection mechanisms are included, and how do they behave under sustained overload?

MP5029GD-C-P features thermal shutdown at 150°C with 25°C hysteresis and intelligent load shedding that reduces output current above 105°C. Under sustained overload, it enters hiccup-mode OCP (2ms on / 2s off) before reaching TSD, allowing self-recovery without requiring power-cycle reset.