General Description

The RTS5450M is an advanced Type-C Power Delivery Controller that integrates all Type-C Channel Configuration (CC) functions, Power Delivery functions (including BMC PHY, protocol, policy engine, and policy manager), 10Gbps high speed MUXs, low speed MUX, billboard device, AUX/HPD detection blocks, and VCONN switches with overcurrent protection into a single chip. It also builds in a high-speed switch to implement billboard device functions. The AUX and HPD detection blocks are used for detecting DP cable hot plug and HPD signals in order to support the DisplayPort Alt mode. New features in the PD3.0 specification, e.g., Fast Role Swap, Extended Message transmission, PD FW update and more, are implemented in the RTS5450M.

A built-in 10Gbps 3:2 MUX can contribute to Type-C plug flipping and provide support for 4‑lane alternate mode (e.g. DisplayPort + USB3.X SS switching). It also provides low-speed MUX switching for SBU1/2 in alternate mode (e.g. AUX+/- of DisplayPort). These MUXs simplify the design of the monitor or PCs systems, including DisplayPort or alternate modes.

The RTS5450M firmware supports USB Type-C Specification Release 1.2 specification and Power Delivery specification R3.0 V1.0. All the configurations such as power roles, data roles, and current modes of the Type-C port can be configured by firmware. The MCU and firmware also implements the PD Protocols, including the Policy Engine (PE), Device Policy Management (DPM). The RTS5450M has various interfaces to communicate with other components, such as GPIO, I2C, and SMBUS. It is flexible for extending a variety of applications by using these interfaces as well as simplifying the addition of Type-C USB Power Delivery to any architecture. The RTS5450M's SMBUS/I2C slave interface system can implement system control achieving all Power Delivery related functions, such as Cable detection, Power Negotiation, Power Swap, Data Swap, VCONN Swap, etc. The RTS5450M can be statically configured via SMBUS for customized extra functions. Via the I2C master interface, the RTS5450M can control/configure other chips in the system, such as a PMU with I2C, etc.

The RTS5450M can update its firmware with an embedded SPI flash via flexible ISP channels. The ISP function allows configuration of multiple features and settings. The ISP function is easy to use with USB/SMBUS/CCs and the RTS5450's download tool.

The RTS5450M adopts an industry standard 46-pin QFN 4.5mm*6.5mm green package.


  • Supports USB Type-C Specification Release 1.2
    • Supports configuration as DFP, UFP, or DRP
    • Attach and port data-role detection
    • Cable Orientation Detection
    • Type-C current mode detection/configuration as UFP/DFP after connection
    • Audio Accessory mode detection
  • Supports USB Power Delivery Specification 3.0 V1.0
    • Integrated USB Power Delivery (PD BMC) PHY
    • Support for Message Protocol
    • Support for Policy Engine
    • Support for Device Policy Manager
    • Supports Fast Role Swap
    • Supports Extended Message (both chunked and unchunked transmission)
  • Supports PD FW update via Firmware Update Extended Messages
  • Built-in VCONN switch with over-current protection and support up to 300mA loading
  • Built-in low speed MUX for SBU1/2 switching in alternate mode (e.g. AUX+/- of DisplayPort)
  • Built-in 10Gbps 3:2 MUX for 4lane alternate mode (e.g. DisplayPort) and USB3.X SS switching
  • Built-in configurable HS/FS billboard device
  • Built-in 10-bit SAR ADC that can monitor VBUS voltage /current, battery voltage etc.
  • Digital auto-scan and comparator block of ADC contributes to fast response to system alarm
  • Supports presenting dead battery 'Rd' on CCs.
  • Supports SMBUS/I2C slave for customized configurations and system control
  • Supports I2C master to configure other chips on the same platform
  • Integrated microprocessor
  • Supports serial flash for ISP function to upgrade Firmware or configurations via USB/SMBUS/CCs directly
  • Supports Crystal-less mode
  • Integrated 3.3V and 1.2V LDO regulators
  • Ultra-low power consumption when the Type-C is disconnected 


  • Cellphones
  • Notebook, Desktop PCs
  • Docks
  • Monitors
  • AC Adaptors, Power Bank