protection and filtering devices to optimize signal integrity and clamping voltages

USB Type-C™ datalines and
‘Alternate Mode’
Advanced protection solutions
Fundamentals
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Overview
Fundamentals
In depth
2
USB Type-C™ ‘One connector to rule them all’
Alternate Mode
Alternate Mode
*With DP to HDMI converter
Merging
USB Type-C™ protocols
Alternate Mode
Before, there were 7 connectors for 7 protocols.
Now with USB Type-C™: 1 single connector for 7 protocols.
3
Alternate Mode
through USB Type-C™ connector
Plug
• Alternate Mode dedicates
physical wires in the USB Type-C
cable for direct device-to-host
transmission of alternate data
protocols:
High Speed Data Path (RX for USB,
or TX for DP Alt Mode)
USB 2.0
Interface
A12 A11 A10 A9
A8
GND RX2+ RX2- VBUS SBU1
A7
D-
A6
D+
GND TX2+ TX2- VBUS VCONN
B1
B2
B3
B4
B5
B6
B7
Secondary Bus
A5
CC
SBU2 VBUS RX1B8
B9 B10
• One configuration pin can be used for
Alternate Mode transmission (CC1 or
CC)
RX1 GND
B11 B12
Cable Ground
VCONN
Plug Configuration Detection
One becomes Vconnm cable power
CC is used for USB – PD Communication
• Two sideband pins (SBU)
• Two USB 2.0 pins for dock,
detachable device and permanent
cable applications only (D+/D-)
A4
A3
A2
A1
VBUS TX1- TX1+ GND
Cable Bus Power
•
•
• Four high-speed lanes (RX/TX)
High Speed Data Path (TX for USB,
or for DP Alt Mode)
Receptacle
High Speed Data Path (RX for USB,
or TX for DP Alt Mode)
A1
A2
A3
A4
GND TX1+ TX1- VBUS
USB 2.0
Interface
High Speed Data Path (TX for
USB, or for DP Alt Mode)
A5
CC1
A6
D+
A7
D-
A8
A9 A10 A11 A12
SBU1 VBUS RX2- RX2+ GND
GND RX1+ RX1- VBUS SBU2
B12 B11 B10 B9
B8
DB7
D+
B6
CC2
B5
Secondary Bus
VBUS TX2- TX2+ GND
B4
B3
B2
B1
Cable Bus Power
•
•
Plug Configuration Detection
One becomes VCONN cable power
CC is used for USB – PD Communication
Cable Ground
4
Alternate Mode
• Alternate Mode partner specifications
The USB-IF is working with its Alternate Mode partners to make sure that ports are properly labeled:
• DisplayPort Alternate Mode on USB Type-C Connector Standard published in September 2014,
supporting DisplayPort 1.3
• MHL Alternate Mode (“Alt Mode”) announced November 2014 supporting MHL 3.0
• Thunderbolt Alternate Mode supporting Thunderbolt 3
• Other serial protocols such as PCI Express and Base-T Ethernet are possible.
5
Data on USB 2.0 and 3.1 Gen 1 & Gen 2
Parameters
Datarate
USB 2.0
SuperSpeed link USB 3.1
Low speed
Full speed
High speed
Gen 1
Gen 2
Up to 1.5 Mbit/s
Up to 12 Mbit/s
Up to 480 Mbit/s
5 Gbit/s
10 Gbit/s
Termination
Not terminated
90 Ω differential
45 Ω to ground
Signaling
output low level
VOL = 0 to + 0.3 V
VOL = −10 to + 10
mV
Signaling
output high level
VOH = 2.8 to 3.6 V
VOH = +360 to
+440 mV
Signaling
Differential voltage swing
6.6 VP-P typ.
800 mVP-P typ.
72  to 120  differential
18  to 30  to ground
1 VP-P typ.
0.4VP-P min, 1.2VP-P max
VBUS voltage
5 V typ.
4.4 V min, 5.5 V max for standard A downstream port
VBUS max. current
900 mA for standard A downstream port
6
2 challenges to overcome
Need for common-mode filtering solution
Need for ESD protection solution
USB 3.1
Signal transmission : @ 5 Gbit/s Gen 1
@ 10 Gbit/s Gen 2
External connector
Generation of parasitic harmonics @ 2.4 GHz
Vulnerable to ESD
Wi-Fi and Bluetooth antenna desense*
(Wi-Fi and Bluetooth frequency carrier = 2.4 GHz)
Increase Bit Error Rate and/or increase the
power consumption of the RF chain
Common Mode filter needed
Connector controller internal ESD HBM
protection are not enough
External ESD protection solution needed
(IEC 61000-4-2)
Best solution ECMF™
*More on antenna desense and ECMF™ here
7
Embedded ESD protection
ESD protection
CMF
(Common-mode filter)
Low-dispersion semiconductor
process
Advanced technology for
optimized performances
Very small size
High and deep rejection
Low-clamping voltage
ECMF™
8
ECMF™ for USB Type C Alternate Mode
Compatible with USB-PD*
Pin
P/N
Total
SSTx /
SSRx
ECMF04-4HSWM10
2
VBUS
ESDA13P70-1U1M
VBUS
PD controller
CC1/CC2
1
CC1
CC2
SBU1
SBU2
ESDALC5-1BF4
4
Dp/Dn
ECMF02-2HSMX6
1
Audio
Type C
1 pair Dp/Dn
D1+
Compatible
USB
10
9
3
8
4
7
D2+
Display Port
Thunderbolt
Up to DP.1.3
USB3.x/DP
MUX
B4
A5
B5
4 pairs SSTx/SSRx
B8
A6
A7
B7
B6
A2
A3
B11
B10
A10
A11
B3
B2
D2+
D25
6
1
10
2
9
3
8
D1+
D1+
D1-
D1-
D2+
Up to TBT Gen 1
A8
D1-
D2-
Yes, 12V
B9
D1+
1
2
D1-
Up to USB3.1 Gen 1
USB-PD*
A9
SBU1/SBU2
DP AUX/Audio
MUX
USB2.x/Audio
MUX
A4
D2+
4
7
5
6
D2-
D2-
*GND not represented
Best integrated solution to avoid antenna desense
*USB-PD: USB Power Delivery.
More here
Click to know more about ECMF™
9
Zoom on ECMF04-4HSWM10
10
S21dd Measurement
HDMI 2.0 4K/2K Eye Diagram
ECMF04-4HSWM10
APLAC 8.21 User: F:Cust# 8463:STMicroelectronics - Tours:AWR Corporation:RP=111
0
SDD21
-1
No impact on the signal
integrity of USB 3.1,
Display Port and more
dB
-2
-3
-4
fcut-off
@ -3dB =
4.2 GHz
-5
10M
30M
100M
300M
F/Hz
1G
3G
Large bandwidth
Lane #1
Eye diagram PASSED
Lane #2
S21cc Measurement
ECMF04-4HSWM10
APLAC 8.21 User: F:Cust# 8463:STMicroelectronics - Tours:AWR Corporation:RP=111
0
SCC21
-5
Improve antenna
sensibility
dB
-10
-15
-20
Wide rejection from
1 to 6 GHz
Attenuation :
-25
-28 -30
dB @ 2.4 GHz
-16 -35
dB @ 5 GHz
-15 dB from 1 to 6 GHz
-40
10M
30M
Lane #1
100M
300M
F/Hz
1G
3G
Lane #2
ESD measurement +8 kV contact
Protect transceivers
against overvoltages
Surge
voltage
+8 kV
VCL @
30 ns
13.1 V
Low-clamping voltage
EMI filtering & ESD protection
for USB datalines
Data rate
(bit/s)
System-level ESD protection (IEC 61000-4-2 Level 4 )
+ Common-mode filter (ECMF)
10G
ESDARF02-1BU2CK
USB 3.1
Gen 2
5G
HSP051-4N10
1-line ESD
ST0201
(0.6 x 0.3 x 0.3 mm)
4-line ESD
QFN (1.85 x 0.95 x 0.32 mm)
USBULC6-2N4
HSP051-4M10
2-line ESD
QFN (1.0 x 0.8 x 0.5 mm)
4-line ESD
QFN (2.50 x 1.00 x 0.47 mm)
4 x ESD + 2 x CMF
ECMF02-2HSMX6
ECMF04-4HSWM10
2 x ESD + 2 x CMF
4 x ESD + 2 x CMF
QFN (1.70 x 1.50 x 0.5 mm)
USBLC6-2P6
2-line ESD + VBUS 6 V
SOT-666 (1.6 x 1.6 x 0.53 mm)
USB 2.0
4 lines
QFN (2.60 x 1.35 x 0.5 mm)
ECMF02-2AMX6
ECMF02-4CMX8
3 x ESD + 2 x CMF
3 x ESD + CMF + VBUS TVS 16 V
QFN (1.70 x 1.50 x 0.5 mm)
1 or 2 lines
ECMF4-20A42N10
QFN (2.20 x 1.35 x 0.4 5mm)
USB 3.1
Gen 1
480M
SOON
2 lines
QFN (2.60 x 1.35 x 0.5 mm)
4 lines
ECMF = Common-mode filter with integrated ESD protection
Click here to know more about ECMF™
11
Let’s go further
Overview
information
Fundamentals
In-depth
information
Selection &
sampling
12
 USB type-C™ advanced protection quick start guide
 USB 2.0 protection and IPADTM solutions presentation
 USB type-C™ power delivery advanced protection presentation
 IEC 61000-4-5 standard overview Application note #AN4275
 ESD - IEC 61000-4-2 standard testing
Application note #AN3353
 TVS short pulse dynamic resistance measurement ... Application note #AN4022
 Protection devices & integrated EMI filtering selection guide
 USB port protection web product selector
 USB IPAD™ (including ECMF™) web product selector
Thank you