FUSB302BMPX - USB Type-C Controller with PD | onsemi
MPN： FUSB302BMPX ✓ 啟用中FUSB302BMPX 概覽
A USB Type-C controller is a bridge IC between a system embedded controller and the USB Type-C connector. It sits in the product hierarchy of interface ICs -> USB controllers -> USB Type-C/PD controllers, and is responsible for CC-line communication, role swap, and PD message exchange, enabling up to 100 W of power delivery over the USB-C cable without dedicated high-speed analog circuitry in the main SoC.
Key features of the FUSB302BMPX include full USB Type-C attach and orientation detection, an integrated BMC PD PHY enabling up to 100 W power and role swap, and support for the alternative interfaces of the Type-C specification. The device communicates with the host over an I2C interface and provides an interrupt output for event-driven operation, keeping host firmware overhead low.
Technically, the FUSB302B integrates the CC-line comparators, BMC transmit/receive physical layer, and digital protocol engine in a compact 2.5 x 2.5 mm MLP-14 footprint. Because the PD PHY is on-chip, designers avoid implementing time-critical BMC encoding in software, improving USB-IF compliance robustness. onsemi provides reference code for the FUSB302B for easy implementation across several embedded controller platforms.
Typical applications include USB-C power adapters and chargers, smartphones and tablets, notebooks and docking stations, power banks, and monitor/TV USB-C ports. Its small 2.5 x 2.5 mm MLP package suits space-constrained portable designs, while 100 W PD support covers laptop charging scenarios.
A key design consideration: the FUSB302BMPX defaults to SNK (sink) role, so source or DRP behavior must be programmed via the I2C register interface. CC-line ESD protection and correct Rp/Rd termination selection are also critical for reliable attach detection.
This page synthesizes distributor pricing, the verified onsemi drop-in replacement guidance for FUSB302MPX, and practical design notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 FUSB302BMPX — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： FUSB302BMPX （相同外形與佔位） — 差異在於 Package, Host Interface, Product Type, Default Role, Operating Temperature.
FUSB302MPX
✅ 直接替換聯絡詢價
查看資料表 →FUSB302B01MPX
✅ 直接替換📋 參考替代品（不在目錄中）
FUSB302BUCX
✅ 直接替換📋 參考替代品（不在目錄中）
FUSB302BMPX 規格
| Product Type | Programmable USB Type-C Controller with PD |
| USB Standard | USB 3.1 (Type-C connector interface) |
| Power Delivery | USB PD via integrated BMC PHY, up to 100 W |
| Role Support | DRP / SRC / SNK (default SNK) |
| 封裝 | 14-MLP (2.5 x 2.5 mm) |
| 安裝類型 | Surface Mount |
| Host Interface | I2C with interrupt output |
| PD Protocol Layer | BMC physical layer integrated on-chip |
| Alternative Mode Support | Yes (Type-C alternative interfaces) |
| RoHS 狀態 | Compliant |
| Packaging | Tape & Reel (MPX suffix) |
| Reference Code Availability | Yes (onsemi reference code for embedded controller platforms) |
FUSB302BMPX 14-mlp (2.5 x 2.5 mm) 腳位配置指南
FUSB302BMPX（14-mlp (2.5 x 2.5 mm) 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： FUSB302BMPX.
請參閱 資料表 以查看完整腳位配置。
典型應用
FUSB302BMPX 適用於 6 應用s: USB-C Power Adapters and Chargers, Smartphones and Tablets, Laptops, Notebooks and Docking Stations, Power Banks, Monitors and TVs with USB-C Ports, Industrial and Embedded Systems with USB-C.
USB-C Power Adapters and Chargers
The FUSB302BMPX fits USB-C wall adapters and chargers because its integrated BMC PD physical layer supports up to 100 W of negotiated power without requiring the host MCU to implement time-critical PD encoding. In a typical adapter, the controller sits on the CC1/CC2 lines of the Type-C receptacle, negotiates PD contracts via I2C with the adapter MCU, and commands the feedback loop of the primary-side controller to step output voltage between 5 V, 9 V, 15 V, and 20 V. The DRP/SRC/SNK role flexibility lets one firmware image cover adapters (SRC) and multi-port chargers. Because the default role is SNK, adapter firmware must set source mode at startup, a one-register operation documented in the onsemi datasheet.
推薦
Smartphones and Tablets
Smartphone and tablet designs benefit from the FUSB302BMPX's extremely small 2.5 x 2.5 mm 14-MLP footprint, which conserves board area around the densely packed Type-C connector. The device performs attach and cable-orientation detection in hardware and relays events to the application processor over I2C with an interrupt line, minimizing polling overhead and standby current - important for battery-operated devices. Its integrated BMC PD PHY enables fast-charge PD contracts with aftermarket chargers up to 100 W, while the default SNK role matches the sink behavior a phone requires out of the box. onsemi reference code for embedded controller platforms shortens firmware bring-up in Android-class power management stacks.
推薦
Laptops, Notebooks and Docking Stations
In notebooks and docking stations, the FUSB302BMPX acts as the Type-C port controller that negotiates PD contracts up to 100 W for laptop charging and manages role swap when a dock alternates between powering the laptop and receiving video/data. The BMC PD block supports the alternative interfaces of the Type-C specification, which is essential for docks that combine DisplayPort Alt Mode signaling with power delivery on the same connector. The controller's hardware orientation detection tells the SoC which CC line carries PD traffic, avoiding software timing hazards. Multiple FUSB302BMPX instances can be hung on one I2C bus with distinct addresses, simplifying multi-port dock designs.
推薦
Power Banks
Power banks require a controller that can act as a sink while being charged and as a source while discharging, which maps directly onto the FUSB302BMPX's DRP (dual role port) capability. The integrated BMC PD PHY negotiates input contracts up to 100 W for fast recharging of the bank, then negotiates output contracts for fast charging of phones and laptops. The 2.5 x 2.5 mm MLP-14 package fits the thin PCBs typical of power banks, and the I2C-plus-interrupt interface lets a single low-cost fuel-gauge MCU manage the PD state machine efficiently. Designers should program role policy so the device toggles DRP until attach, per the Type-C specification state machine.
推薦
Monitors and TVs with USB-C Ports
Monitors and televisions increasingly expose USB-C ports that must deliver power to connected phones and laptops while carrying DisplayPort Alt Mode video. The FUSB302BMPX supports the alternative interfaces of the Type-C specification through its BMC PD block, so it can advertise source capabilities (for example 15 V or 20 V profiles) and negotiate the appropriate contract while the SoC handles Alt Mode lane configuration. Hardware attach and orientation detection accelerates hot-plug response, and the 14-MLP package fits the tight connector area of monitor mainboards. The SNK-default configuration is overridden in firmware to source mode for display applications.
推薦
Industrial and Embedded Systems with USB-C
Industrial embedded systems - HMI panels, gateways, and single-board computers - are migrating to USB-C connectors and need PD negotiation to safely draw or source higher power. The FUSB302BMPX provides the Type-C and PD layer while the industrial MCU (often an automotive-qualified part) retains full control through the I2C interface, keeping system behavior deterministic and auditable. onsemi supplies reference code for several embedded controller platforms, reducing integration risk. The part's small footprint and surface-mount 14-MLP package support standard SMT assembly, and its role as a front-end controller means no high-speed analog design burden is placed on the industrial firmware team.
推薦
推薦產品摘要
工程參考資料，適用於 FUSB302BMPX — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | FUSB302MPX | FUSB302B01MPX | FUSB302BUCX |
|---|---|---|---|---|
| Package | 14-MLP (2.5 x 2.5 mm) | 14-MLP (2.5 x 2.5 mm) - same | 14-MLP (2.5 x 2.5 mm) - same | 14-MLP (2.5 x 2.5 mm) - same |
| Brand | onsemi | onsemi | onsemi | onsemi |
| USB Type-C + PD Support | Yes (BMC PD PHY, up to 100 W) | Yes (BMC PD PHY, up to 100 W) | Yes (BMC PD PHY, up to 100 W) | Yes (BMC PD PHY, up to 100 W) |
| Role Support | DRP / SRC / SNK (default SNK) | DRP / SRC / SNK | DRP / SRC / SNK (default SNK) | DRP / SRC / SNK (default SNK) |
| USB-C Spec Compliance Alignment | Updated to latest USB-C spec releases (B revision) | Original FUSB302 (earlier spec baseline) | B revision (updated) | B revision (updated) |
| Drop-in Compatibility Direction | Drop-in replacement for FUSB302MPX (per onsemi) | Can be replaced by FUSB302BMPX without software change | Same footprint, verify variant suffix | Same footprint, verify variant suffix |
| Host Interface | I2C + interrupt | I2C + interrupt | I2C + interrupt | I2C + interrupt |
| Lifecycle Recommendation | Recommended for new designs | Legacy - FUSB302B recommended instead | Active variant | Active variant |
主要差異化特點
- Updated USB-C specification compliance (對比FUSB302MPX)
- Integrated BMC PD physical layer (對比Software-PD implementations)
- Compact 2.5 x 2.5 mm 14-MLP footprint (對比Larger QFN Type-C controllers)
設計說明
The FUSB302BMPX defaults to SNK (sink) role out of reset. Designs requiring source behavior (adapters, docks, monitors) must configure role mode via the I2C register interface during initialization, otherwise the port will never advertise Rp termination and will fail to attach sink devices. onsemi's reference code includes this initialization sequence - port it verbatim rather than writing register writes from scratch to avoid missing required sequence steps.
Place the FUSB302BMPX as close to the Type-C receptacle CC pins as practical, keeping CC1/CC2 traces short and matched. The 14-MLP (2.5 x 2.5 mm) package has a fine 0.5 mm-class pitch; verify the land pattern against the onsemi datasheet dimensions rather than copying a generic MLP-14 pattern. Provide solid ground return under the IC and place the VDD decoupling capacitor within 1-2 mm of the supply pin for clean BMC signaling.
While the FUSB302BMPX negotiates PD contracts up to 100 W, the controller itself only handles CC-line signaling - the high-current VBUS path must be routed through a separate load switch and protection circuit sized for the negotiated contract. Estimated: a 100 W / 20 V contract implies 5 A on VBUS, so the VBUS switch and TVS (for example SMBJ-class devices) must be rated well above 5 A continuous and appropriate clamping voltage.
合規資訊
RoHS compliant per distributor listings; lead-free surface-mount device. REACH, halogen-free, and conflict-minerals status should be confirmed against the onsemi product page certificate of conformance.
