(^28) DESIGN WORLD — EE NETWORK 6 • 2019 eeworldonline.com | designworldonline.com
Source
Sink
What’s new in
USB Power Delivery 3.0?
Since its official debut in 1996, the
Universal Serial Bus (USB) protocol
has seen numerous revisions spanning
three generations of the standard, with
USB 4.0 waiting in the wings for later in
- Meanwhile, in parallel, the USB
Implementer’s Forum (USB-IF), which
oversees the USB standard, has maintained
parallel development tracks for USB
interconnects and USB Power Delivery
(USB PD) technology.
The USB Type-C interconnect (2014)
brought a smaller, slimmer plug that’s
reversible, eliminating the fumbling
around to properly align the plug with the
jack. USB Type-C also delivered higher
data transfer rates and higher charging
voltages/currents. When USB 3.1 arrived,
so did USB PD 2.0. Now, USB 3.2 has
been released as has PD 3.0. It is useful to
review some of the changes from PD 2.0 to
the current 3.0 revision of the standard as
well as elements of PD compliance testing.A new version of the USB spec puts additional demands on
testing regimes that wring out power-handling options. DAVID MALINIAK | TELEDYNE LECROYA representative USB
PD 3.0 compliance test
setup featuring Teledyne
LeCroy’s Voyager M310P
test platform. This setup
handles the test suites for
both PD 2.0 and PD 3.0.
The platform, which has
native Type-C ports, can
test both sources and sinks.TEST & MEASUREMENT HANDBOOK
LeCroy — Test and Measurement HB 06-19.indd 28 6/7/19 1:36 PM