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PI5USB8000Q
Description
Type A USB connectors are found in 100% of PCs as well as
in wall chargers that are shipped with all of the latest popular
hand-held devices that require charging. All of the connectors
physically look the same, however, their behavior is dierent.
When a user tries to connect an iPAD into a notebook USB port
vs. a USB charger that came with the iPAD, one can instantly
observe a dierent behavior. is is because the communication
protocol of a standard PC USB port vs. a dedicated Apple-iPAD
USB port is dierent and it is this communication that enables
the iPAD to charge eciently. e same can be seen by other
popular phones and tablets.
ere are Apple-1A modes of communication, Apple-2A modes
of communication, communication described by the Chinese
Telecom standard, YD/T-1591, and communication described
by the USB Battery Charging Spec. In order to support all popu-
lar phones, all communication protocols must be supported.
Pericom’s PI5USB8000Q is able to oer anybody designing a
USB port meant to charge external devices with all communica-
tion protocols in a single IC. e PI5USB8000Q can detect the
communication language required and then automatically en-
able charging to occur with dierent external USB devices.
Features
AEC-Q100 qualied
USB charger controller that supports SDP, DCP and CDP
per USB BC 1.0, 1.1, and 1.2 speccation
DCP (Dedicated charger port) is used when enumeration
is not available
CDP (Charging downstream port) is used when
enumeration is available and FAST charging is requested
SDP (Standard downstream port) is used for systems
with standard USB host ports
Support for YD/T-1591(Chinese Telecom Standard)
Support for non-standard charging such as Apple-1A and
Apple-2A
Integrated 85mΩ MOSFET with thermal and Short-circuit
protection
Adjustable Current Limit from 1.1A to 2.8A
Single Power Supply, 5V +/-5%
Fast response time for over-current detection, 4us (typ)
De-glitched Fault Report (FAULT)
Integrated ESD protection up to +/- 4kV contact on pins 10
and 11 per IEC61000-4-2 spec
Detects when device is plugged in or out when in “DCP/
AutoDetect” mode and provides output signal (PE/)
Mouse/Keyboard wake-up support (see truth table)
UL certtied, E341484
USB Power Switch with Pericom's FAST Charger
Circuitry for DCP, CDP, and 2A iPad support
Pin Diagram: (Top View)
IN
D-H
ILIM_SEL
OUT
D-P
D+P
PE
CTL3
EN
CTL1
CTL2
ILIM1
ILIM0
GND
FAULT
1
2
3
4
12
11
10
9
16 15 14 13
5 6 7 8
PAD
D+H
Reference Diagram
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PI5USB8000Q
USB Power Switch with Pericom's FAST Charger
Circuitry for DCP and CDP support
Block Diagram
De-glitch
Discharge
Control
Thermal
Sense
Under-Voltage
Monitor
Charge
Pump
IN
EN
FAULT
OUT
Current
Sense
Driver Current
Limit
Communication
(CDP, SDP, DCP)
Charging Mode
Control Device Recogition D-P
D+P
PE/
Current Limit
Select
CTL1 CTL2 CTL3
EN
D-H
D+H
GND
ILIM1 ILIM0
ILIM_SEL
ILIM_SEL
IN
D-H
ILIM_SEL
OUT
D-P
D+P
PE
CTL3
EN
CTL1
CTL2
ILM0
ILM1
GND
FAULT
1
2
3
4
12
11
10
9
16 15 14
13
5 6 7
8
PAD
D+H
2:1 Mux
Reference Diagram
4.75V to 5.25V
PI5USB8000Q
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PI5USB8000Q
USB Power Switch with Pericom's FAST Charger
Circuitry for DCP and CDP support
Pin Description
Pin No. Pin Name I/O Type Description
1 IN Power Input 5V Input Voltage: connect a 0.1µF or greater ceramic capacitor from IN to GND as
close to the IC as possible
2 D-H I/O D-data line to USB host controller
3 D+H I/O D+data line to USB host controller
4 ILIM_SEL I
Control input signal used to dynamically change power switch current-limit
threshold: Logic Low selects ILIM0, logic High selects ILIM1
this pin has an internal pull-down
5 EN I
Control input for turning entire IC on/o (including the Power switch), Logic High
congures charger controller into normal operation, Logic Low turns the IC o,
which will put the USB signal path into High-Z and the power switch will shut o
the OUT pin and the OUT cap will be discharged by the Pericom IC.
6 CTL1 I Control input for controlling charging mode, See truth table
7 CTL2 I Control input for controlling charging mode, See truth table
8 CTL3 I Control input for controlling charging mode, See truth table
9 PE O Open drain output telling system when device is connected
10 D+P I/O D+ data line to external USB Port
Pin No. Pin Name I/O Type Description
11 D-P I/O D- data line to external USB Port
12 OUT Power
Output Power-Switch Output
13 FAULT O Active-low open drain output, asserted during over temperature, low VOUT
14 GND Ground Ground connection : should be connected externally to POWERPAD
15 ILIM0 IExternal Resistor used to set current limit threshold when ILIM_SEL logic Low
16K≤ RILIM ≤ 50K
16 ILIM1 IExternal Resistor used to set current limit threshold when ILIM_SEL logic High;
16K≤ RILIM ≤ 50K
NA Center Pad Ground Internally connected to GND: Used to heat-sink the part to the circuit board-traces.
Should be connected to GND pin
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PI5USB8000Q
USB Power Switch with Pericom's FAST Charger
Circuitry for DCP and CDP support
System State CTL1 CTL2 CTL3 Mode
S4/S5 0 0 0 IC power down with all I/O’s High-z
S4/S5 0 0 1 DCP/Auto detect w/ USB/Keyboard pass
through disabled
S3 0 1 0 D+/- pass through mode (D+/-P connects
to D+/-H)
S3 0 1 1 DCP/Auto detect w/ USB/Keyboard pass
through enabled
Test mode 1 0 0 DCP, BC Specication 1.1 only
Test Mode 1 0 1 DCP, Apple 1A only
S0 1 1 0 SDP enabled
S0 1 1 1 CDP or SDP (if device does not support
CDP) enabled
7.1 Plug in Detection
During PowerNAP mode (charing when system is in S3/S4/S5), Pericom can detect when an external device is connected or not. is
feature can help save system power when nothing is connected externally. Using Pericom’s PE/ open drain output ag, the system
could disable higher current supplies when no external device is connected. Once an external device is connected, Pericom’s PE/ out-
put ag can inform the system and then in-turn, the system could enable the higher current power supply to enable charging.
Next, the Pericom device will detect what type of device is plugged in (BC1.0 device vs. BC1.1 vs. BC1.2 device vs. Apple device vs.
YD/T 1591) and then we will automatically switch to required communication mode to properly communicate with the device to
initiate charging. Finally Pericom will continue to monitor Vbus for over current scenarios and over temperature scenarios and at the
same time we will also detect D+/D- load for plug-out detection. Please note, Plug in detection ONLY works when device is in sleep
and charge mode.
7.2 Plug out Detection
Once plug-out is detected, then PE/ will once again be pulled high (through external pull-up) and current sensing will resume to de-
termine if a device is plugged in or not. When plug-out detection is not working, PE/ is always pulled high through external pull-up.
Plug-out will not work if sleep and charge is not enabled.
7.3 Mouse/Keyboard pass through mode
Since USB1.1 devices do no integrate charging protocols, there is no special charging mode required to support charging the device.
erefore, if a USB Low-Speed external device is detected, then Pericom’s solution will simply connect D+/- from the USB connec-
tor directly to the USB host controller. e detection process for mouse/keyboard will occur ~1.8 seconds aer the Pericom solution
enters DCP/auto detect with USB/keyboard pass through enabled mode, which is when CTL1 = 0, CTL2 = 1, and CTL3 = 1. If a low
speed device is detected as "attached" at that point, then the pass through mode will be enabled and D+/-P will connect to D+/-H. If
the mouse/keyboard is disconnected, while the Pericom's PI5USB8000Q remains in the 011 mode, the device will enter auto-charg-
ing mode and will enable the PE/ output pin to detect if an external device is connected or not.
Only in auto-charging mode does Pericom ensure all external battery powered devices will succesfully charge.
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PI5USB8000Q
USB Power Switch with Pericom's FAST Charger
Circuitry for DCP and CDP support
IN
D-H
ILIM_SEL
OUT
D-P
D+P
PE
CTL3
EN
CTL1
CTL2
ILM0
ILM1
GND
FAULT
1
2
3
4
12
11
10
9
16 15 14 13
5 6 7 8
PAD
D+H
With the above design,
• InS0mode,settingwillbe(CTL1,2,3)1,1,1: CDPmodeenabled
• InS3mode,settingwillbe(CTL1,2,3)0,1,1: DCPwithmouse/keyboardpassthroughenabled
• InS4/S5mode,settingwillbe(CTL1,2,3)0,0,1: DCPwithmouse/keyboardpassthroughdisabled
• Ifcustomerwantstodisablecharging(perhapsbatterypoweristoolow),thenCTL3shouldbeconnectedtologicLow.
• In S0 mode, setting will be (CTL1,2,3) 110: normal charging (SDP)
• In S3 mode, setting will be (CTL1,2,3) 010: Charging is bypassed
• In S4/S5 mode, setting will be (CTL1,2,3) 000: USB port is completely disabled
7.4 Recommended Part Conguration
7.3.1 System wake-up via external mouse or keyboard
Today’s systems are enabled to wake up from S3 mode if a pre-enumerated mouse/keyboard has activity (movement or key-pressed).
In order for the system to continue supporting this feature, the USB host controller must be able to communicate with the external
device in S3 mode.
erefore, if a mouse/keyboard is detected (via the USB low speed pass through feature), Pericom’s PI5USB8000Q will enable the
communication between device and controller. Our device will automatically pass the signals through with minimal degradation.
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PI5USB8000Q
USB Power Switch with Pericom's FAST Charger
Circuitry for DCP and CDP support
7.5 CDP mode description
When PI5USB8000Q is congured into CDP mode (see truth table to understand how to congure into CDP mode), D+/-H is con-
nected to D+/-P, allowing communication/enumeration to occur between USB host controller and USB device. e Pericom device
will continue to monitor D+ for primary detection and then respond with an acknowledgement on D- (with proper timing) to
initiate CDP charging to occur. For secondary detection per the Battery Charger 1.2 spec, Pericom will allow the GND signal from
15Kohm pull-down in the USB controller pass through to the port. erefore when the cell phone sends 0.6V signal on D-, it will
see a GND signal on D+, which will provide a VALID response for CDP, secondary detection.
Once CDP communication has been initiated by external device, the Pericom IC will provide the acknowledge command without
aecting USB signal integrity. is acknowledge command will let the external device know that the USB port (Charging down-
stream port) can support a minimum of 1.5A (per the USB1.2 battery charging spec). e user can set two current limit values, and
then by using ILIM_SEL, the user can switch between which limit they would like to use.
Charging Downstream Port (CDP) is the communication protocol found in high charging PCs. ese connectors allow USB data to
be transferred between the CDP and the external device as well as allow charging to occur up to a max of 1.5A. e actual current
draw is managed by the external device, the CDP only limits the max current draw from 1.5A. e communication protocol of CDP
is described in the USB Battery Charging Spec revision 1.2. Pericom is able to support this communication.
SDP
Standard Downstream Port (SDP) is the communication protocol found in traditional USB connectors in PCs. ese connectors
allow USB data to be transferred between the SDP and the external device as well as allow charging to occur up to a max of 500mA.
e communication protocol of SDP is described in the USB2.0 and USB3.0 specications from the USB organization.
Recommended Operation Conditions
Parameter Min. Typ. Max. Unit
Ambient Operating Temperature -40 +25 +85 ºC
IN Power Supply Voltage (measured in respect to GND) +4.75 +5 +5.25 V
Storage Temperature......................................................... –65°C to +150°C
Supply Voltage to Ground Potential.................................. –0.5V to +6.0V
DC Input Voltage ........................................................... -0.5V to VDD+0.5V
DC Output Current............................................................ 120mA
Note: Stresses greater than those listed under MAXIMUM RAT-
INGS may cause permanent damage to the device. This is a stress
rating only and functional operation of the device at these or any
other conditions above those indicated in the operational sections
of this specication is not implied. Exposure to absolute maxi-
mum rating conditions for extended periods may affect reliability.
Maximum Ratings
(Above which useful life may be impaired. For user guidelines, not tested.)
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PI5USB8000Q
USB Power Switch with Pericom's FAST Charger
Circuitry for DCP and CDP support
Symbol Parameter Conditions Min Typ (1) Max Unit
V
IN
Operating Voltage 4.75 5.25 V
IDD Supply Current VIN = 5.25V,
VEN = 5V
DCP mode
enabled
External device
connected 330
µA
External device
not connected 154
SDP mode enabled 173
CDP mode enabled 215 250
IDDQ Quiescent Supply Current Power Down Mode enabled, VIN = 5.25V,
VEN = 0V, CTLx = 0V, ILIM_SEL = High 19
VIH Input High Voltage CTL1, CTL2, CTL3, EN 1.4 V
V
IL
Input Low Voltage CTL1, CTL2, CTL3, EN 0.4
V
IH
Input High Voltage ILIM_SEL 2.4 V
V
IL
Input Low Voltage ILIM_SEL 0.6
RON
Switch On-Resistance for
USB 2.0 HS signal (From
D+/-H to D+/-P )
VIN = 5V., -0.4V < VINPUT(on D+/- path) < +0.4V,
IINPUT(on D+/- path) = +30mA 2.5 4
Ω
RON
Switch On-Resistance for
USB 2.0 FS signal (From
D+/-H to D+/-P )
VIN = 5V, 0V < VINPUT < 3.3V IINPUT = -15mA 3.5 6
RDSON
Switch On-Resistance for
Vbus path during normal
operation
VIN = 5V, IO = 1.5A, VINPUT = 5V 85 mΩ
IOZ
I/O leakage on signal pins
(D+/- H, D+/-P) current
when port is o
VIN = 5.25V, VINPUT from 0V to 3.6V +/-2
µA
IOFF
Signal leakage on signal
pins (D+/- H, D+/-P) when
chip is o
VIN = 0V, VINPUT from 0V to 5.25V 20
Notes: (1) Typical are at VDD = 5V, TA = 25 ºC ambient and maximum loading.
Capacitance (TA = -40 to +85ºC, f = 1MHz)
Parameter Description Test Condition Ty p Max Unit
CIN Control Logic Capacitance 2.5 3.4 pF
COFF - USB path only Switch Capacitance across D+/- path when
switch is OFF EN = LOW 3.1 3.4 pF
CON - USB path only Switch Capacitance across D+/- path when
switch is ON EN= High 6.0 pF
Electrical Characteristics (Ambient Temperature -40 to +85ºC)
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PI5USB8000Q
USB Power Switch with Pericom's FAST Charger
Circuitry for DCP and CDP support
Dynamic Electrical Characteristics Over the Operating Range (differential)
Parameter Description Test Condition Min Typ Max Units
XTALK Crosstalk RL = 50Ω, freq = 240MHz -29 dB
OIRR O-Isolation RL = 50Ω, freq = 240MHz -28
-3dB BW -3dB Bandwidth (along D+/- path) RL = 50Ω 1400 MHz
-0.5dB BW -0.5dB Bandwidth (along D+/- path) RL = 50Ω 470
INLOSS Insertion loss (along D+/- path) freq = 240MHz -0.46 dB
(T = 25ºC, Vin = 5V, R = 20Kohm, VILIM= 0V, unless otherwise noted)
Symbol Parameter Description Test Condition Min Typ Max Units
Input Input Current, CTL pins V
CTL
= 0V or 5.25V -0.5 0.5 µA
Ilim (1) OUT short circuit
current limit
VILIM_SEL = Logic
Low/ High
RRLIM0= 16 kW 3200 mA
RRLIM0= 18 kW 2900 mA
RRLIM0= 22 kW 2400 mA
RRLIM0= 26 kW 2000 mA
RRLIM0= 33 kW 1700 mA
RRLIM0= 50 kW 900 mA
tIOS Response time to short-circuit VIN = 5.0V 4 µs
Reverse leakage cur-
rent VOUT = 5.25V, IN = GND TJ = 25°C 0.2 µA
UNDERVOLTAGE LOCKOUT
Low-level input voltage, IN VIN rising 3.7 4.6 V
Hysteresis, IN TJ = 25°C 75 mV
OVERCURRENT FAULT
Output low voltage, FAULT I
FAULT
= 1mA 180 mV
O-state current V
FAULT
= 5V 1 µA
FAULT de glitch FAULT de-glitch will lter out the glitches
on FAULT to stabilize the FAULT signal 2ms
THERMAL SHUTDOWN
ermal shutdown threshold 135
°C
Recovery from thermal shutdown 120
Hysteresis 10
ermal shutdown threshold in current limit 130
Notes: (1) Ilim is the current level that will limit the OCP block thereby triggering the FET to turn o.
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PI5USB8000Q
USB Power Switch with Pericom's FAST Charger
Circuitry for DCP and CDP support
CDP Mode
Symbol Parameter Test Condition Min Max Units
VDM_SRC Voltage source on D- for CDP detect VD-P = 0.6V 0.5 0.7 V
IDP_SINK DP_IN sink current 0.4V < = VD-P < 0.8V 50 150 uA
Parameter Description Test Condition(1) Min. Typ. Max. Units
Tpd Propagation delay(2,3) 0.3 ns
Intra-Pair
Skew(2)
Output skew, bit to bit (Between +
and - of same pair)
See Test Circuit for Electrical Charac-
teristics 10 ps
Charging times after CTL transition from 110 to 011
Parameter Description & Test Condition Min. Ty p. Max. Units
IPad Mode CTL from 110 to 011 1.5 sec
IPhone Mode CTL from 110 to 011 2.8 sec
Dedicated Mode CTL from 110 to 011 2.8 sec
Application Reccomendations & Reference Design Diagram
P erico m C o m p any C on fiden tial
P ericom S em icondu ctor C orp.
ww w .pericom .com
P age 6 of 6 9/13 /2012
B oard D esign In form ation :
P I5U S B 25 43 E V B S ch em atic
R 15 10k
+5V
R 16 10k
R 17 10k
R 18 10k
1
R 19 10k
0 H-/+DotstcennocP-/+D0 10 1 DCP/Autodetec t WITH USB/ Keyboard pa ss through
1 0 0Test mode - DC P, BCSpec.1.1 only
Test mode - Ap ple mode
SDPenable
CDPenable
1
1
1
0 1
1 0
1 1
+5V
PE #
S W 3
S W _SP D T_Togg le_R T
2
1
3
R 20 10 k
R 21 10 k
+5V
JP 8
1
2
U 2
P I5U SB 25 43
IN
1
D -H
2
D +H
3
ILIM _SE L
4
EN
5
C T L1
6
C T L2
7
C T L3
8
PE # 9
D +P 10
D -P 11
O U T 12
F A U LT # 13
G N D 14
ILIM 0 15
ILIM 1 16
H G N D 17
VB U S _O U T
J3
VB U S
1
D -
2
D +
3
G N D
4
S hell
5S hell 6
C 5
22u F
O U T VB U S _O U T
F A U LT#
+5V
ILIM _SE L
C TL1
EN
JP 9
1
2
C T L1
C T L2
C T L3
R 22 ≤50kohms
JP 10
1
2
R 23
J4
C O N _U SB 2.0_TA _P lug
VB U S 1
D - 2
D + 3
G N D 4
S hell
5
D 3
LE D _R
12
+5V
R 24 560
JP 11
1
2
JP 12
1
JP 13
1
JP 14
1
D 4
LE D _G
12
VB U S _IN
DCP/Autodetec t WITHOUT U SB/Keyboardpassthrou gh
JP5, JP6, JP7 areused t o signa l monit oring
C 6
100u F
C 7 0.1u
R 25 560
+5V
S W 4
S W _X8_ H alf_P itch
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
ILIM _SE L
D S C
CTL1 CTL2
C 8
1uF
C TL2
C TL3
CTL3 Mode
0 0 0 DCP/Autodetec t WITHOUT U SB/Keyboardpassthrou gh
00 1
R 26 10k
R 27 10k
R 28 10k
≤50kohms
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PI5USB8000Q
USB Power Switch with Pericom's FAST Charger
Circuitry for DCP and CDP support
Max Current Allowed:
I_Lim vs Rlim; Vin= 5.0V, 25C
Output Short Circuit Current:
IOS vs Rlim; Vin= 5.0V, 25C
TYPICAL CHARACTERISTICS
EYE Diagram using USB compliance test pattern
(with no switch)
EYE Diagram using USB compliance test pattern
(with switch)
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PI5USB8000Q
USB Power Switch with Pericom's FAST Charger
Circuitry for DCP and CDP support
TYPICAL CHARACTERISTICS
-35.0
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
1.00E+07 1.00E+08 1.00E+09 1.00E+10
Return Loss, (dB)
Frequency(Hz)
-80.0
-70.0
-60.0
-50.0
-40.0
-30.0
-20.0
-10.0
0.0
1.00E+07 1.00E+08 1.00E+09 1.00E+10
Off Isolation (dB)
Frequency(Hz)
-70.0
-60.0
-50.0
-40.0
-30.0
-20.0
-10.0
1.00E+07 1.00E+08 1.00E+09 1.00E+10
Crosstalk (dB)
Frequency(Hz)
Insertion Loss vs Frequency Return Loss vs Frequency
Cross Talk vs Frequency O Isolation vs Frequency
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PI5USB8000Q
USB Power Switch with Pericom's FAST Charger
Circuitry for DCP and CDP support
Packaging Mechanical: 16-Contact TQFN (ZH)
DESCRIPTION: 16-Contact, Thin Fine Pitch Quad Flat No-Lead (TQFN)
PACKAGE CODE: ZH (ZH16)
DOCUMENT CONTROL #: PD-2047 :NOISIVER E
DATE:12/26 /13
14-0244
Ordering Information
Ordering Code Package Code Package Description
PI5USB8000QZHE ZH 16-pin, in Fine Pitch Quad Flat No-Lead (TQFN)
Notes:
• ermal characteristics can be found on the company web site at www.pericom.com/packaging/
•Addingan"E"denotesPb-freeandGreen
•Addingan"X"attheendoftheorderingcodedenotestapeandreelpackaging
Pericom Semiconductor Corporation • 1-800-435-2336
14-0009
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Pericom:
PI5USB8000QZHEX