TPS2552DBV

Manufacturer Part NumberTPS2552DBV
DescriptionPRECISION ADJUSTABLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
ManufacturerTI [Texas Instruments]
TPS2552DBV datasheet
 


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PRECISION ADJUSTABLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
FEATURES
1
±6% Current-Limit Accuracy at 1.3 A
2
Meets USB Current-Limiting Requirements
Backwards Compatible with TPS2550/51
Adjustable Current Limit, 75 mA–1300 mA (typ)
Constant-Current (TPS2552/53) and Latch-off
(TPS2552-1/53-1) Versions
Fast Overcurrent Response - 2- S (typ)
85-mΩ High-Side MOSFET (DBV Package)
Reverse Input-Output Voltage Protection
Operating Range: 2.5 V to 6.5 V
1- A Maximum Standby Supply Current
Built-in Soft-Start
15 kV ESD Protection per IEC 61000-4-2 (with
External Capacitance)
APPLICATIONS
USB Ports/Hubs
Digital TV
Set-Top Boxes
Mobile Phones
VOIP Phones
TIPS2552/TPS2553
TIPS2552/TPS2553
DRV PACKAGE
DBV PACKAGE
(TOP VIEW)
(TOP VIEW)
6
1
1
OUT
IN
IN
2
2
ILIM
GND
GND
PAD
5
3
EN
EN
3
4
FAULT
EN = Active Low for the TPS2552
EN = Active High for the TPS2553
Add -1 to part number for lach-off version
Figure 1. Typical Application as USB Power Switch
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.
PowerPAD is a trademark of Texas Instruments.
2
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.
SLVS841A – NOVEMBER 2008 – REVISED DECEMBER 2008
DESCRIPTION
The
TPS2552/53
power-distribution
applications where precision current limiting is
required or heavy capacitive loads and short circuits
are
encountered.
programmable current-limit threshold between 75 mA
and 1.3 A (typ) via an external resistor. Current-limit
accuracy as tight as +/-6% can be achieved at the
higher current-limit settings. The power-switch rise
and fall times are controlled to minimize current
surges during turn on/off.
TPS2552/53 devices limit the output current to a safe
level by switching into a constant-current mode when
the output load exceeds the current-limit threshold.
TPS2552-1/53-1 devices provide circuit breaker
functionality by latching off the power switch during
overcurrent or reverse-voltage situations. An internal
reverse-voltage detection comparator disables the
power-switch in the event that the output voltage is
driven higher than the input to protect devices on the
input side of the switch. The FAULT logic output
asserts low during overcurrent and reverse-voltage
conditions.
5V USB
0.1 F
m
Input
R
FAULT
6
OUT
100 kW
ILIM
5
4
FAULT
Fault Signal
Control Signal
TPS2552
TPS2553, TPS2552-1, TPS2553-1
and
TPS2552-1/53-1
switches
are
intended
These
devices
offer
TPS2552/53
USB Data
USB
IN
OUT
120 F
m
ILIM
R
FAULT
ILIM
USB requirement only*
20 kW
EN
GND
*
USB requirement that downstream
Power Pad
facing ports are bypassed with at least
120 F per hub
m
Copyright © 2008, Texas Instruments Incorporated
for
a
Port

TPS2552DBV Summary of contents

  • Page 1

    PRECISION ADJUSTABLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES FEATURES 1 ±6% Current-Limit Accuracy at 1 Meets USB Current-Limiting Requirements Backwards Compatible with TPS2550/51 Adjustable Current Limit, 75 mA–1300 mA (typ) Constant-Current (TPS2552/53) and Latch-off (TPS2552-1/53-1) Versions Fast Overcurrent Response - ...

  • Page 2

    ... Submit Documentation Feedback Product Folder Link(s): 2008........................................................................................................................................ RECOMMENDED MAXIMUM (3) (3) SON SOT23 (DRV) (DBV) TPS2552DRV TPS2552DBV TPS2553DRV TPS2553DBV TPS2552DRV-1 TPS2552DBV-1 TPS2553DBV-1 (1) (2) THERMAL T ≤ 25°C DERATING A RESISTANCE POWER FACTOR ABOVE RATING 55°C/W 285 mW 2.85 mW/° ...

  • Page 3

    RECOMMENDED OPERATING CONDITIONS V Input voltage Enable voltage V /EN V High-level input voltage Low-level input voltage Continuous output current, OUT OUT R ...

  • Page 4

    TPS2552 TPS2553, TPS2552-1, TPS2553-1 SLVS841A – NOVEMBER 2008 – REVISED DECEMBER ELECTRICAL CHARACTERISTICS (continued) over recommended operating junction temperature range, 2.5 V ≤ kΩ (unless otherwise noted) IN FAULT PARAMETER SUPPLY CURRENT I Supply ...

  • Page 5

    ... PIN NAME TPS2552DBV TPS2553DBV EN 3 – EN – 3 GND FAULT 4 4 OUT 6 6 ILIM 5 5 PowerPAD – – ™ Add -1 for Latch-Off version IN Charge Pump EN UVLO GND ILIM Note A: TPS255x parts enter constant current mode during current limit condition; TPS255x-1 parts latch off Copyright © ...

  • Page 6

    TPS2552 TPS2553, TPS2552-1, TPS2553-1 SLVS841A – NOVEMBER 2008 – REVISED DECEMBER PARAMETER MEASUREMENT INFORMATION OUT V 50 90% V OUT Figure 2. Test Circuit and Voltage Waveforms Figure 3. Response Time to Short Circuit Waveform V OUT ...

  • Page 7

    Fault Signal Control Signal Figure 5. Typical Characteristics Reference Schematic Figure 6. Turnon Delay and Rise Time Figure 8. Device Enabled into Short-Circuit Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): SLVS841A – NOVEMBER 2008 – REVISED DECEMBER ...

  • Page 8

    TPS2552 TPS2553, TPS2552-1, TPS2553-1 SLVS841A – NOVEMBER 2008 – REVISED DECEMBER TYPICAL CHARACTERISTICS (continued) Figure 10. Short-Circuit to Full-Load Recovery Response Figure 12. Short-Circuit to No-Load Recovery Response Figure 14. 1Ω Load Transient Response 8 Submit Documentation Feedback ...

  • Page 9

    TYPICAL CHARACTERISTICS (continued) Figure 16. Reverse-Voltage Protection Recovery 0. ILIM 0.36 0.32 0.28 0. 6.5 V 0.20 IN 0.16 0.12 0.08 0. Junction Temperature - °C ...

  • Page 10

    TPS2552 TPS2553, TPS2552-1, TPS2553-1 SLVS841A – NOVEMBER 2008 – REVISED DECEMBER TYPICAL CHARACTERISTICS (continued) 1400 1300 1200 T = -40°C 1100 A 1000 T = 25°C A 900 T = 125°C 800 A 700 600 500 400 300 200 100 ...

  • Page 11

    OVERVIEW The TPS2552/53 and TPS2552-1/53-1 are current-limited, power-distribution switches using N-channel MOSFETs for applications where short circuits or heavy capacitive loads will be encountered. These devices allow the user to program the current-limit threshold between 75 mA and 1.3 ...

  • Page 12

    TPS2552 TPS2553, TPS2552-1, TPS2553-1 SLVS841A – NOVEMBER 2008 – REVISED DECEMBER FAULT RESPONSE The FAULT open-drain output is asserted (active low) during an overcurrent, overtemperature or reverse-voltage condition. The TPS2552/53 asserts the FAULT signal until the fault condition is removed ...

  • Page 13

    INPUT AND OUTPUT CAPACITANCE Input and output capacitance improves the performance of the device; the actual capacitance should be optimized for the particular application. For all applications greater ceramic bypass capacitor between IN and GND ...

  • Page 14

    TPS2552 TPS2553, TPS2552-1, TPS2553-1 SLVS841A – NOVEMBER 2008 – REVISED DECEMBER 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 I OS(min) 100 Figure 24. Current-Limit ...

  • Page 15

    APPLICATION 1: DESIGNING ABOVE A MINIMUM CURRENT LIMIT Some applications require that current limiting cannot occur below a certain threshold. For this example, assume that 1 A must be delivered to the load so that the minimum desired current-limit ...

  • Page 16

    TPS2552 TPS2553, TPS2552-1, TPS2553-1 SLVS841A – NOVEMBER 2008 – REVISED DECEMBER ACCOUNTING FOR RESISTOR TOLERANCE The previous sections described the selection understanding the current-limit threshold tolerance. The analysis focussed only on the TPS2552/53 and TPS2552-1/53-1 performance and ...

  • Page 17

    The constant-current devices resume normal operation once the overload condition is removed. The latch-off devices (TPS2552-1/53-1) assert the FAULT flag after the deglitch period and immediately turn off the device. The device remains ...

  • Page 18

    TPS2552 TPS2553, TPS2552-1, TPS2553-1 SLVS841A – NOVEMBER 2008 – REVISED DECEMBER Where Ambient temperature (° Thermal resistance (°C/ Total power dissipation (W) D Compare the calculated junction temperature with the initial estimate. If ...

  • Page 19

    SELF-POWERED AND BUS-POWERED HUBS A SPH has a local power supply that powers embedded functions and downstream ports. This power supply must provide between 4. 5. downstream facing devices under full-load and no-load conditions. SPHs ...

  • Page 20

    TPS2552 TPS2553, TPS2552-1, TPS2553-1 SLVS841A – NOVEMBER 2008 – REVISED DECEMBER AUTO-RETRY FUNCTIONALITY Some applications require that an overcurrent condition disables the part momentarily during a fault condition and re-enables after a pre-set time. This auto-retry functionality can be implemented ...

  • Page 21

    TWO-LEVEL CURRENT-LIMIT CIRCUIT Some applications require different current-limit thresholds depending on external system conditions. shows an implementation for an externally controlled, two-level current-limit circuit. The current-limit threshold is set by the total resistance from ILIM to GND (see previously ...

  • Page 22

    ... PACKAGING INFORMATION (1) Orderable Device Status TPS2552DBVR ACTIVE TPS2552DBVR-1 ACTIVE TPS2552DBVT ACTIVE TPS2552DBVT-1 ACTIVE TPS2552DRVR ACTIVE TPS2552DRVR-1 ACTIVE TPS2552DRVT ACTIVE TPS2552DRVT-1 ACTIVE TPS2553DBVR ACTIVE TPS2553DBVR-1 ACTIVE TPS2553DBVT ACTIVE TPS2553DBVT-1 ACTIVE TPS2553DRVR ACTIVE TPS2553DRVR-1 ACTIVE TPS2553DRVT ACTIVE TPS2553DRVT-1 ACTIVE (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs ...

  • Page 23

    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 ...

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  • Page 26

    Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the ...