onsemi FUSB302TV10MPX

Overview

FUSB302TV10MPX from onsemi is an AEC-Q100 qualified, automotive-grade USB Type-C controller with integrated BMC Power Delivery 2.0 physical layer, supporting SRC/SNK/DRP roles, 100 W power negotiation, and VCONN switching for full-featured USB 3.1 cables. It operates from −40 °C to +105 °C in a 14-lead WQFN (2.5 mm × 2.5 mm) package and targets automotive cigarette-lighter adapters and in-vehicle charging systems.

For engineers reviewing the FUSB302TV10MPX datasheet, pinout, applications, or equivalent options, key selection criteria include automotive temperature rating (−40 °C to +105 °C), integrated PD 2.0 BMC PHY, autonomous DRP toggle timing (tTOG1 = 45 ms typ, tTOG2 = 30 ms typ), CCx-to-VCONN over-current protection (800 mA typ), and I²C Fast Mode Plus support up to 1 MHz.

Technical Context

The FUSB302TV10MPX implements a dedicated BMC physical layer with 48-byte TX and 80-byte RX FIFOs, enabling host-controlled USB PD packet exchange via I²C. Its dual CC pins support orientation detection, attach/detach sensing, and current capability signaling per USB Type-C 1.2.

It integrates a programmable 6-bit DAC for precise CC and VBUS measurement, three fixed-threshold comparators for BC_LVL detection, and autonomous DRP toggle logic that alternates between SRC and SNK states without processor intervention-configurable via TOGGLE bit in Control2 register.

Key Specifications

Pinout & Package

Package: 14-lead WQFN (2.5 mm × 2.5 mm, 0.5 mm pitch), Pb-free, thermally enhanced with dual GND pads for EMI and thermal performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB Type-C controller applications.

Compared with STUSB4500L and TUSB320LAIRWBR, the FUSB302TV10MPX uniquely combines AEC-Q100 Grade 2 qualification, autonomous DRP toggle, integrated VCONN switching with OCP, and BMC PD 2.0 PHY in a single WQFN-14 package - making it the only option qualified for automotive USB-C power delivery where reliability, thermal robustness, and minimal BOM count are critical.

Availability

FUSB302TV10MPX is available at Aetrix Electronics and suitable for automotive cigarette adapters, in-vehicle charging hubs, and industrial USB-C power delivery systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for FUSB302TV10MPX 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

onsemi is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.

The FUSB302TV10MPX belongs to onsemi's USB Type-C and Power Delivery controller product line, engineered specifically for automotive-grade USB-C power delivery with integrated BMC PHY, VCONN management, and AEC-Q100 qualification.

FAQ

What is the operating temperature range of the FUSB302TV10MPX?

The FUSB302TV10MPX is rated for −40 °C to +105 °C operation, meeting AEC-Q100 Grade 2 requirements for automotive applications. This extended range ensures reliable USB Type-C port control in under-dash and engine-bay environments where ambient temperatures exceed standard industrial limits. The FUSB302TV10MPX maintains full functionality-including CC detection, VCONN switching, and BMC PD packet handling-across this entire range.

Does the FUSB302TV10MPX support USB Power Delivery 3.0?

No, the FUSB302TV10MPX implements USB PD 2.0 BMC physical layer only. It supports SOP, SOP', SOP", and Hard Reset ordered sets, automatic GoodCRC response, and retry/soft/hard reset sequencing per PD 2.0. It does not support PD 3.0 features such as extended message objects, fast role swap, or PD logging. For PD 3.0, consider alternative controllers like TUSB320LAIRWBR-but note those lack AEC-Q100 qualification and integrated VCONN switching found in the FUSB302TV10MPX.

How does the FUSB302TV10MPX handle VCONN power delivery to USB 3.1 cables?

The FUSB302TV10MPX integrates a dedicated VCONN switch that routes regulated VCONN voltage to either CC1 or CC2 based on cable orientation detection. It provides over-current protection at 800 mA (typical), soft-start timing of 1.5 ms, and thermal shutdown at 145 °C. This eliminates the need for external MOSFETs, current-sense resistors, or thermal monitoring circuitry-reducing BOM count and layout complexity while ensuring safe powering of full-featured USB 3.1 cables. The FUSB302TV10MPX manages all VCONN control autonomously once configured via I²C.

Can the FUSB302TV10MPX operate as a dedicated source without external microcontroller intervention?

Yes, the FUSB302TV10MPX defaults to source-only mode with open CC pins-ideal for wall or automotive adapters. With VDD applied and no I²C initialization, it presents Rd pull-downs only upon explicit software configuration; otherwise, it remains invisible as a sink. Its autonomous DRP toggle can be disabled, and HOST_CUR bits can be hard-coded to deliver fixed 3 A (HOST_CUR[1:0] = 11b) without runtime adjustment. The FUSB302TV10MPX thus functions as a standalone USB-C source in minimal-system designs.

What I²C speed does the FUSB302TV10MPX support, and how does it affect PD packet throughput?

The FUSB302TV10MPX supports I²C Fast Mode Plus up to 1 MHz, enabling rapid register access and FIFO loading/unloading. At 1 MHz, the host can write a full 48-byte TX FIFO in under 400 µs and read an 80-byte RX FIFO in under 650 µs-critical for maintaining USB PD timing constraints (e.g., tTransmit ≤ 195 µs for GoodCRC). Slower I²C clocks (e.g., 100 kHz) risk missing PD deadlines during high-traffic scenarios. The FUSB302TV10MPX's I²C interface is fully compliant with JEDEC JESD38B and supports clock stretching for deterministic timing control.