ST USB Power Delivery User Manual
USB Power Delivery and Type-C
Overview
Product Portfolio Solution
Architecture
USB Type-C Overview
USB Power Delivery specification introduces USB Type-C receptacle, plug and cable; they provide a
smaller, thinner and more robust alternativ e to existing USB interconnect. Main features are:
• Enable new and exciting host and device form-factors where size, industrial design and style are
important parameters
• Work seamlessly with existing USB host and device silicon solutions
• Enhance ease of use for connecting USB devices with a focus on minimizing user confusion for
plug and cable orientation
USB Type-C Overview
Type-C Features
• Enable new and exciting host and device form-factors where size, industrial design and style are
important parameters
• Work seamlessly with existing USB host and device silicon solutions
• Enhance ease of use for connecting USB devices with a focus on minimizing user confusion
for plug and cable orientation
• Simple Power Delivery implementation (BMC)
Mode of Operation
USB 2.0 5 V 500 mA
USB 3.1 5 V 900 mA
USB BC 1.2 5 V Up to 1.5 A Legacy charging
USB Type-C @ 1.5 A 5 V 1.5 A Supports high power devices
USB Type-C @ 3.0 A 5 V 3 A Supports higher power devices
USB PD
Nominal
Voltage
Configurable
up to 20 V
Maximum
Current
Configurable
up to 5 A
Notes
Default current, based on definitions in the base
specifications
Directional control and power level management
The Re-Evolution of USB
USB has evolved fr om a data interface capable of suppl ying limited power
to a primary provider of power with a data interface
Power
Delivery
Type-C
Alternate
Mode
USB IF
More Power with USB Power Delivery (100W)
More Flexibility with a new reversible USB-C connector
More Protocols
(Display Port, HDMI, VGA, Ethernet…)
More Speed with USB 3.1 (10 Gbit/s)
USB PD Power Profiles
as of today …. per USB PD release 2.0
USB PD New Profiles proposal
Type-C Pin Outs Functions
Receptacle
High Speed Data Path
(RX for USB 3.1, or reconfigured
in Alternate Mode)
A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A12 A12
GND
GND
B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1
Secondary
TX1+ TX1- V
RX1+ RX1- V
Cable Bus
BUS
BUS
CC1 D+ D- SBU1 V
SBU2 D- D+ CC2 V
USB 2.0
Interface
Cable
High Speed Data Path
(TX for USB 3.1, or reconfigured
in Alternate Mode)
BUS
BUS
RX2- RX2+
TX2- TX2+
GND
GND
Configuration Channel
Bus
Power
Ground
Two pins on the USB Type-C receptacle, CC1 and CC2,
are used in the discovery, configuration and management
of connections across USB type-C cable
Type-C Pin Outs Functions
Plug
High Speed Data Path
(RX for USB 3.1, or reconfigured
in Alternate Mode)
A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1
GND
GND
B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12
Secondary
RX2+ RX2- V
TX2+ TX2- V
Cable Bus
BUS
BUS
SBU1 D- D+ CC V
V
CONN
USB 2.0
Interface
SBU2 V
Cable
High Speed Data Path
(TX for USB 3.1, or reconfigured
in Alternate Mode)
BUS
BUS
TX1- TX1+
RX1- RX1+
GND
GND
Configuration Channel
Bus
Power
Ground
On a standard USB Type-C cable, only a single CC wire within each plug is
connected through the cable to establish signal orientation
The other CC pin is repurposed as V
CONN
for powering electronics
Also, only one set of USB 2.0 D+/D- wires are i mplemented
Architecture
Architecture and key words
Provider
Source
port
Cable
Detection
USB Port
T ype A/B Plug
identification
Device Policy Manager
Policy Engine
Protocol Layer
Physical Layer
BFSKBMC
CC
(Type-C only)
VBUS
Power
Source(s)
V
BUS
Power
Sink
VBUS
Device Policy Manager
Policy Engine
Protocol Layer
Physical Layer
BFSK BMC
CC
(Type-C only)
Consumer
Sink
port
Cable
Detection
USB Port
T ype A/B Plug
identification
CC
Communication acr oss the channel uses BiphaseMark Coding (BMC) over CC in Type C connector
USB Type-C CC Connections
DFP -
Source
Connection
Detection
and muxes
control
4 possible CC
configurations
UFP - Sink
Connection
Detection
• Detect attach/detach of USB ports, e.g. a DF P to a UFP
• Resolve cable orientation and twist connections to establish USB data bus routing
• Establish DFP and UFP roles between two attached ports
• Discover and configure VBUS
• USB Power Delivery Communication
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