ROHM's BM92AxxMWV series of power receiving controller ICs support the latest USB Power Delivery (USBPD) protocol with the USB Type-C™ connector. Compatibility with USB Type-C™ Rev1.1 and USBPD Rev2.0 makes it possible to supply up to 100W (20V/5A) between USB Type-C™ devices that up to now was limited to 7.5W. As a result, even devices with larger power requirements such as notebook PCs and TVs can be powered from a USB port. And for conventional USB equipped applications (i.e. smartphones, tablets) faster charging is enabled. In addition, functional optimization and miniaturization are achieved by leveraging advanced micro 0.13um BiCDMOS and high voltage processes along with circuit technology.
- Q. What is USB Type-C™?
- A. A new standard for the USB connector and cable. Unlike conventional USB connectors and cables, it can be used without regard to the Host and Device sides, and the same symmetrical connector design is used at both ends, allowing for reversible plug orientation and cable direction.
- Q. What is Power Delivery?
- A. An optional standard for delivering power through the USB Type-C™ connector and cable. This function makes it possible to supply up to 100W (20V/5A) to compatible devices.
- Q. What is Alternate Mode?
- A. A mode that allows pseudo signals such as video (Display Port, MHL) to pass through a USB Type-C™ cable. This is defined in the USB Type-C™ standard.
- Q. What the voltages and currents that can be used with USB Power Delivery?
- A. The Power Rule is defined by USB Power Delivery. Standard voltages are 5V, 9V, 15V, and 20V, with currents of 1.5A, 3.0A, and 5.0A. User-definable voltages and currents can be added.
- Q. What is the adoption rate of USB Power Delivery in applications?
- A. USB Power Delivery was first adopted in 2015 in notebook PCs. In 2016 the number of applications expanded to include AC adapters, portable batteries, docking stations, and LCD monitors.
- Q. What are the main features of ROHM's USB Power Delivery Controller IC?
- A. One key advantage is that it enables system implementation using the fewest number of external parts on the market. BiCDMOS and high voltage processes along with circuit technology are utilized to achieve functional optimization and miniaturization. This reduces the number of parts required, including the power supply IC.
- Q. What are the differences between series?
- A. BM92A1xMWV: DRP compatible(DP ALT Mode not supported)
BM92A3xMWV: DRP compatible(DP ALT Mode supported)
BM92A2xMWV: DFP compatible (supports control pins to AC/DC controllers and applications such as AC adapters)
BM92A5xMWV: DFP compatible (supports applications at the Power Supply (DC/DC) of USBPD)
- Q. What are DFP, DRP, and UFP?
- A. DFP (Downstream Facing Port): Data (Host Side)/Power (Source Side)
UFP (Upstream Facing Port): Data (Device Side)/Power (Sink Side)
DRP (Dual Role Port): Capable of operating as a DFP and UFP. However, care is required since the Data Role of the DRP and Power Role of the USBPD have different meanings.
- Q. Regarding Display Port Alt Mode(DP Alt Mode) compatibility, what is the circuit configuration with the BM92Axx series?
- A. ALT Mode is enabled by combining the BM92A30MWV (DRP compatible, DP Alt Mode supported) with an external SS MUX. The external SS MUX is controlled using the GPIO of the BM92A30MWV.