TI TPD4S014DSQR

TPD4S014
SLVSAU0A – MAY 2011 – REVISED JUNE 2011
www.ti.com
COMPLETE PROTECTION SOLUTION FOR USB CHARGER PORT INCLUDING ESD
PROTECTION FOR ALL LINES AND OVER-VOLTAGE PROTECTION ON VBUS
Check for Samples: TPD4S014
FEATURES
APPLICATIONS
•
•
•
•
•
•
•
•
1
•
•
•
•
•
•
Input Voltage Protection at VBUS up to 28V
Low Ron nFET Switch
Supports >2A charging current
Over Voltage and Under Voltage Lock Out
Features
Low Capacitance TVS ESD Clamp for USB2.0
High speed Data Rate
Internal 16ms Startup Delay
Integrated Input Enable and Status Output
Signal
Thermal Shutdown Feature
ESD Performance D+/D–/ID/VBUS Pins
– ±15-kV Contact Discharge (IEC 61000-4-2)
– ±15-kV Air Gap Discharge (IEC 61000-4-2)
Space Saving QFN Package (2mm×2mm)
Cell Phones
eBook
Portable Media Players
Digital Camera
DSQ PACKAGE
(TOP SIDE/SEE-THROUGH VIEW)
VCC
1
10
VBUS
VCC
VBUS
EN
GND
ACK
D+
ID 5
6
D-
DESCRIPTION
The TPD4S014 is a single-chip solution for USB charger port protection. This device offers low capacitance TVS
type ESD clamps for the D+, D- and standard Capacitance for the ID pin. On the VBUS pin, this device can
handle over-voltage protection up to 28V. The over voltage lock-out feature ensures that if there is a fault
condition at the VBUS line, the TPD4S014 is able to isolate the VBUS line and protects the internal circuitry from
damage. Similarly, the under voltage lock out feature ensures that there is no power drain from the internal VCC
plane to external VBUS side in case there is short to GND. There is a 16ms turn-on delay after VBUS crosses
the under voltage lockout threshold, in order to let the voltage stabilize before closing the switch. This function
acts as a deglitch and prevents unnecessary switching if there is any ringing on the line during connection.
ORDERING INFORMATION
TA
–40°C to 85°C
PACKAGE(1)(2)
QFN – DSQ (0.4-mm pitch)
Tape and reel
ORDERABLE PART NUMBER
TOP-SIDE MARKING
TPD4S014DSQR
ZTE
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011, Texas Instruments Incorporated
TPD4S014
SLVSAU0A – MAY 2011 – REVISED JUNE 2011
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
CIRCUIT SCHEMATIC DIAGRAM
VCC
VBUS
Internal
Band Gap
Reference
Control Logic
+
Charge Pump
OVLO
ACK
UVLO
EN
GND
D+
D-
ID
DEVICE OPERATION
OTP
UVLO
OVLO
EN
SW
ACK
X
X
H
X
X
OFF
H
X
H
X
OFF
L
H
L
L
H
OFF
L
L
L
L
L
ON
L
X
X
X
X
OFF
H
H
X
X
X
OFF
H
OTP = Over temperature protection circuit active
UVLO = Under voltage lock-out circuit active
OVLO = Over voltage lock-out circuit active
SW = Load switch
CP = Charge pump
X = Don’t Care
H = True
L = False
2
Copyright © 2011, Texas Instruments Incorporated
TPD4S014
SLVSAU0A – MAY 2011 – REVISED JUNE 2011
www.ti.com
PIN FUNCTIONS
PIN
NAME
NO.
TYPE
DESCRIPTION
D–
6
I/O
USB data–
D+
7
I/O
USB data+
ID
5
I/O
USB ID signal
ACK
4
O
Open-Drain Adapter-Voltage Indicator Output. ACOK is driven low after the VIN voltage is stable
between UVLO and OVLO for 16ms (typ). Connect a pullup resistor from ACOK to the logic I/O
voltage of the host system.
Enable Active-Low Input. Drive EN low to enable the switch. Drive EN high to disable the switch.
EN
3
I
VBUS
9, 10
USB Input
Power
VCC
1, 2
GND
Central
PAD
USB connector VBUS
Power Output Connect to PCB internal PCB plane
8
Ground
Central
PAD
Heat Sink
Connect to PCB ground plane
Electrically disconnected. Use as heat sink. Connect to GND plane via large PCB PAD
ABSOLUTE MAXIMUM RATINGS (1) (2)
over operating free-air temperature range (unless otherwise noted)
VALUE
MIN
–0.5
Max Voltage on VBUS
MAX
UNIT
30
V
Continuous current through NFET
2.6
A
Max Current through D+, D-, ID, VBUS ESD clamps
-50
mA
–50
50
mA
–40
Continuous current through logic output
150
°C
IEC 61000-4-2 Contact Discharge
D+, D–, ID, VBUS pins
±15
kV
IEC 61000-4-2 Air-gap Discharge
D+, D–, ID, VBUS pins
±15
kV
Human-Body Model
EN, ACK, VCC pins
±2
kV
Maximum junction temperature
(1)
(2)
Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may
degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond
those specified is not implied.
The algebraic convention, whereby the most negative value is a minimum and the most positive value is a maximum.
THERMAL INFORMATION
THERMAL METRIC (1)
TPD4S014
DSQ (10) PINS
θJA
Junction-to-ambient thermal resistance
70.3
θJCtop
Junction-to-case (top) thermal resistance
46.3
θJB
Junction-to-board thermal resistance
33.8
ψJT
Junction-to-top characterization parameter
2.9
ψJB
Junction-to-board characterization parameter
33.5
θJCbot
Junction-to-case (bottom) thermal resistance
16.3
(1)
UNITS
°C/W
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
Copyright © 2011, Texas Instruments Incorporated
3
TPD4S014
SLVSAU0A – MAY 2011 – REVISED JUNE 2011
www.ti.com
ELECTRICAL CHARACTERISTICS, EN, ACK, D+, D–, ID Pins
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP MAX UNIT
VIH
High-level input voltage EN
Load current = 50 µA
VIL
Low-level input voltage EN
Load current = 50 µA
0.5
V
IL
Input Leakage Current EN, D+, D–, ID
VI = 3.3 V
1.0
µA
VOL
Low-level output voltage ACK
IOL = 2 mA
0.1
V
VD
Diode forward Voltage D+, D–, ID pins; lower clamp diode
IO = 8 mA
ΔCIO
Differential Capacitance between the D+, D– lines
CIO
1
V
0.95
V
0.03
pF
Capacitance to GND for the D+, D– lines
1.6
pF
CIO-ID
Capacitance to GND for the ID line
19
pF
VRS
Reverse stand-off voltage of D+, D- and ID pins
5
V
VBR
Breakdown voltage D+, D–, ID pins
Ibr = 1 mA
6
VBR VBUS
Breakdown voltage on Vbus
Ibr = 1 mA
28
RDYN
Dynamic on resistance D+, D–, ID clamps
II = 1 Amps
V
V
Ω
1
ELECTRICAL CHARACTERISTICS OVP CIRCUITS
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP MAX
UNIT
INPUT UNDERVOLTAGE LOCKOUT
VUVLO+
Under-voltage lock-out, input power
detected threshold rising
VBUS increasing from 0V to 5V, No load on OUT pin
2.65
2.8
3
V
VUVLO–
Under-voltage lock-out, input power
detected threshold falling
VBUS decreasing from 5V to 0V, No load on OUT
pin
2.25
2.44
2.7
V
VHYS-UVLO
Hysteresis on UVLO
Δ of VUVLO+ and VUVLO–
150
360
550
mV
151
200
mΩ
17.4
18
ms
8
µs
INPUT TO OUTPUT CHARACTERISTICS
RDS-
VBUS switch resistance
VBUS = 5 V, IOUT = 500 mA
tON
Turn-ON time
RL = 36 Ω, CL = 10 uF
tOFF
Turn-OFF time
RL = 36 Ω, CL = 10 uF
VBUSSWITCH
16
INPUT OVERVOLTAGE PROTECTION (OVP)
VOVP+
Input overvoltage protection
threshold
VBUS
VBUS increasing from 5 V to 7 V, No Load
5.55
6.15
6.45
V
VOVP-
Input overvoltage protection
threshold falling
VBUS
VBUS decreasing from 7V to 5V, No Load
5.75
5.98
6.24
V
VHYS-OVP
Hysteresis on OVP
VBUS
VBUS decreasing from 7 V to 5 V, No Load
25
100
275
mV
td(OVP)
Max Overvoltage delay
11
µs
tREC
Recovery time from input
overvoltage condition
9
ms
VBUS
Time measured from VBUS 8 V ≥ 6 V, 1-µs fall-time
8
SUPPLY CURRENT CONSUMPTION
over operating free-air temperature range (unless otherwise noted)
TYP
MAX
UNIT
IVBUS
VBUS Operating Current
Consumption
PARAMETER
No load on VCC pin, VBUS = 5 V, EN = 0 V
TEST CONDITIONS
147.6
160
µA
IVBUS_OFF
VBUS Operating Current
Consumption
No load on VCC pin, VBUS = 5 V, EN = 5 V
111.8
120
µA
THERMAL SHUTDOWN FEATURE
TSHDN
Thermal Shutdown
TSHDN-HYS
Thermal-Shutdown Hysteresis
4
144
°C
23
°C
Copyright © 2011, Texas Instruments Incorporated
TPD4S014
SLVSAU0A – MAY 2011 – REVISED JUNE 2011
www.ti.com
GENERAL OPERATION
The TPD4S014 provides a single-chip protection solution for USB charger interfaces. The VBUS line is tolerant
upto 28 V. A Low RDS(on) nFET switch is used to disconnect the downstream circuits in case of a fault condition.
At power-up, when the voltage on VBUS is rising, the switch will close 16 ms after the input crosses the
undervoltage threshold, thereby making power available to the downstream circuits. The TPD4S014 also has an
ACK output, which deasserts to alert the system that a fault has occurred. The TPD4S014 offers 4 channel ESD
clamps for D+, D-, ID, and VBUS pins that provide IEC61000-4-2 level 4 ESD protection. This eliminates the
need for external TVS clamp circuits in the application.
The TPD4S014 has an internal oscillator and charge pump that controls the turn-on of the internal nFET switch.
The internal oscillator controls the timers that enable the turn-on of the charge pump and sets the state of the
open-drain ACK output. If VBUS < VUVLO or if VBUS > VOVLO, the internal oscillator remains off, thus disabling the
charge pump. The charge-pump at startup, after a 16ms internal delay, turns on the internal nFET switch and
asserts ACK. At any time, if VBUS drops below VUVLO or rises above VOVLO, ACK is released and the nFET switch
is disabled.
When the input voltage rises above VOVP, or drops below the VUVLO, the internal VBUS switch is turned off,
removing power to the application. The ACK signal is asserted when a fault condition is detected. If the fault was
an over voltage event, the VBUS FET switch turns on 8ms after input voltage returns below VOVP – VHYS-OVP and
remains above VUVLO. If the fault was an under voltage event, the switch turns on 16ms after the voltage
returns above VUVLO+ (similar to start up). When the switch turns on, the ACK is asserted once again.
A 16ms deglitch time has been introduced in to the turn on sequence to ensure that the input supply has
stabilized before turning the switch ON. Noise on the Vbus line, could turn on the switch when the fault condition
is still active. To avoid this, OVP glitch immunity allows noise on the VBUS line to be rejected. Such a glitch
protection circuitry is also introduced in the turn off sequence in order to prevent the switch from turning off for
voltage transients. The glitch protection circuitry integrates the glitch over time, allowing the OVP circuitry to
trigger faster for larger voltage excursions above the OVP threshold and slower for shorter excursions. The
protection circuitry has a maximum delay of 8 µs.
When the device is ON, current flowing through the device will cause the device to heat up. Over heating can
lead to permanent damage to the device. To prevent this, an over temperature protection has been designed into
the device. Whenever the junction temperature exceeds 145 °C, the switch will turn off, thereby limiting the
temperature. The ACK signal will be asserted for an over temperature event. Once the device cools down to
below 120 °C the ACK signal will be deasserted, and the switch will turn on if the EN is active and the VBUS
voltage is within the UVLO and OVP thresholds. While the over temperature protection in the device will not
kick-in unless the die temperature reaches 145 °C, It is generally recommended that care is taken to keep the
junction temperature below 125 °C. Operation of the device above 125 °C for extended periods of time can affect
the long-term reliability of the part.
The junction temperature of the device can be calculated using below formula:
Tj = Ta + PD qJA
Tj
=
Junction temperature
Ta
=
Ambient temperature
θJA
=
Thermal resistance
PD
=
Power Dissipated in device
PD = I2Ron
I
=
Current through device
RON
=
Max on resistance of device
Copyright © 2011, Texas Instruments Incorporated
(1)
(2)
5
TPD4S014
SLVSAU0A – MAY 2011 – REVISED JUNE 2011
www.ti.com
Example
At 2A continuous current power dissipation is given by:
PD = 22 ´ 0.2 = 0.8W
If the ambient temperature is about 60oC the junction temperature will be:
Tj = 60 + (0.8 ´ 70.3 ) = 116.24
This Implies that, at an ambient temperature of 60° Celcuis that TPD4S014 can pass a continuous of 2A with no
problem. Conversely, the above calculation can also be used to calculate the total continuous current the
TPD4S014 can handle at any given temperature.
APPLICATION DIAGRAM
1.8 V - 3.3 V (from System VCC)
RPU
Vbus
USB Port
Vbus
CVBUS
TPD4S014
To Processor
ACK
EN
VCC
From Processor
Battery
Charger
CVCC
D+
D-
D+
D-
ID
USB
Transceiver
ID
TYPICAL CHARACTERISTICS
Figure 1. IEC61000-4-2 -8kV Contact Waveform
6
Figure 2. IEC61000-4-2 +8kV Contact Waveform
Copyright © 2011, Texas Instruments Incorporated
TPD4S014
www.ti.com
SLVSAU0A – MAY 2011 – REVISED JUNE 2011
Figure 3. Capacitance Variation With Voltage
Figure 4. Variation of On Resistance with Ambient
Temperature
Figure 5. Max Pulse Current Through Switch vs
Pulse Duration
Figure 6. UVLO Threshold Variation With
Temperature
Figure 7. OVP Threshold Variation With
Temperature
Figure 8. Start Up Inrush Current Characteristics
Copyright © 2011, Texas Instruments Incorporated
7
TPD4S014
SLVSAU0A – MAY 2011 – REVISED JUNE 2011
Figure 9. Device Turn on Characteristics
www.ti.com
Figure 10. Device Turn OFF Characteristics
(Undervoltage)
Figure 11. Device Turn OFF Characteristics (Overvoltage)
8
Copyright © 2011, Texas Instruments Incorporated
PACKAGE OPTION ADDENDUM
www.ti.com
4-Jul-2011
PACKAGING INFORMATION
Orderable Device
TPD4S014DSQR
Status
(1)
ACTIVE
Package Type Package
Drawing
SON
DSQ
Pins
Package Qty
10
3000
Eco Plan
(2)
Green (RoHS
& no Sb/Br)
Lead/
Ball Finish
MSL Peak Temp
(3)
Samples
(Requires Login)
CU NIPDAU Level-2-260C-1 YEAR
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
Addendum-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
1-Jul-2011
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
TPD4S014DSQR
Package Package Pins
Type Drawing
SON
DSQ
10
SPQ
Reel
Reel
A0
Diameter Width (mm)
(mm) W1 (mm)
3000
179.0
8.4
Pack Materials-Page 1
2.2
B0
(mm)
K0
(mm)
P1
(mm)
2.2
1.2
4.0
W
Pin1
(mm) Quadrant
8.0
Q2
PACKAGE MATERIALS INFORMATION
www.ti.com
1-Jul-2011
*All dimensions are nominal
Device
Package Type
Package Drawing
Pins
SPQ
Length (mm)
Width (mm)
Height (mm)
TPD4S014DSQR
SON
DSQ
10
3000
195.0
200.0
45.0
Pack Materials-Page 2
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