Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - ELCs High side VFDFN 10

ENx = Active Low for the TPS2560

ENx = Active High for the TPS2561

TPS2560/61

DRC PACKAGE

(TOP VIEW)

PAD

EN1

GND

EN2

OUT1

FAULT2

ILIM

OUT2

FAULT1

OUT1

OUT2

GND

FAULT1

ILIM

EN2

ILIM

2x R

FAULT

100 kΩ

Control Signal

2.5V – 6.5V

VOUT1

TPS2560/61

0.1 Fμ

Fault Signal

PowerPad

VOUT2

EN1

Control Signal

FAULT2

Fault Signal

2x C

LOAD

TPS2560

TPS2561

www.ti.com

SLVS930A –DECEMBER 2009– REVISED FEBRUARY 2012

DUAL CHANNEL PRECISION ADJUSTABLE CURRENT-LIMITED POWER SWITCHES

Check for Samples: TPS2560, TPS2561

FEATURES

DESCRIPTION

• Two separate current limiting channels

The TPS2560 and TPS2561 are dual-channel

• Meets USB Current-Limiting Requirements

power-distribution switches intended for applications

• Adjustable Current Limit, 250 mA–2.8 A (typ)

where precision current limiting is required or heavy

capacitive loads and short circuits are encountered.

• +/- 7.5% Current-Limit Accuracy at 2.8A

These devices offer a programmable current-limit

• Fast Overcurrent Response - 3.5-μS (typ)

threshold between 250 mA and 2.8 A (typ) per

• Two 44-mΩ High-Side MOSFETs

channel via an external resistor. The power-switch

rise and fall times are controlled to minimize current

• Operating Range: 2.5 V to 6.5 V

surges during turn on/off.

• 2-μA Maximum Standby Supply Current

Each channel of the TPS2560/61 devices limit the

• Built-in Soft-Start

output current to a safe level by switching into a

• 15 kV / 8 kV System-Level ESD Capable

constant-current mode when the output load exceeds

• UL Listed – File No. E169910

the current-limit threshold. The FAULTx logic output

for each channel independently asserts low during

• CB & Nemko Certified

overcurrent and over temperature conditions.

APPLICATIONS

• USB Ports/Hubs

• Digital TV

• Set-Top Boxes

• VOIP Phones

Figure 1. Typical Application as USB Power Switch

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.

2PowerPAD is a trademark of Texas Instruments.

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.

Summary of content (26 pages)

PAGE 1
TPS2560 TPS2561 SLVS930A – DECEMBER 2009 – REVISED FEBRUARY 2012 www.ti.com DUAL CHANNEL PRECISION ADJUSTABLE CURRENT-LIMITED POWER SWITCHES Check for Samples: TPS2560, TPS2561 FEATURES 1 • • • • • • • • • • • • 2 Two separate current limiting channels Meets USB Current-Limiting Requirements Adjustable Current Limit, 250 mA–2.8 A (typ) +/- 7.5% Current-Limit Accuracy at 2.8A Fast Overcurrent Response - 3.5-μS (typ) Two 44-mΩ High-Side MOSFETs Operating Range: 2.5 V to 6.
PAGE 2
TPS2560 TPS2561 SLVS930A – DECEMBER 2009 – REVISED FEBRUARY 2012 www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure.
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TPS2560 TPS2561 SLVS930A – DECEMBER 2009 – REVISED FEBRUARY 2012 www.ti.com RECOMMENDED OPERATING CONDITIONS VIN MIN MAX 2.5 6.5 TPS2560 0 6.5 TPS2561 0 6.5 Input voltage, IN VENx VENx Enable voltage VIH High-level input voltage on ENx or ENx VIL Low-level input voltage on ENx or ENx IOUTx Continuous output current per channel, OUTx Operating virtual junction temperature RILIM Recommended resistor limit range V V 1.1 V 0.66 0 Continuous FAULTx sink current TJ UNIT 2.
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TPS2560 TPS2561 SLVS930A – DECEMBER 2009 – REVISED FEBRUARY 2012 www.ti.com ELECTRICAL CHARACTERISTICS (continued) over recommended operating conditions, V/ENx = 0 V, or VENx = VIN (unless otherwise noted) TEST CONDITIONS (1) PARAMETER MIN TYP MAX UNIT SUPPLY CURRENT IIN_off Supply current, low-level output 0.1 2.0 μA RILIM = 20 kΩ 100 125 μA RILIM = 100 kΩ 85 110 μA 0.01 1.0 μA 2.35 2.45 VIN = 6.5 V, No load on OUTx, V ENx = 6.
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TPS2560 TPS2561 SLVS930A – DECEMBER 2009 – REVISED FEBRUARY 2012 www.ti.com DEVICE INFORMATION Pin Functions PIN NAME I/O DESCRIPTION TPS2560 TPS2561 4 - I Enable input, logic low turns on channel one power switch - 4 I Enable input, logic high turns on channel one power switch 5 - I Enable input, logic low turns on channel two power switch EN2 - 5 I Enable input, logic high turns on channel two power switch GND 1 1 IN 2, 3 2, 3 I Input voltage; connect a 0.
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TPS2560 TPS2561 SLVS930A – DECEMBER 2009 – REVISED FEBRUARY 2012 www.ti.com PARAMETER MEASUREMENT INFORMATION OUTx tr CLx RLx VOUTx tf 90% 90% 10% 10% TEST CIRCUIT VENx 50% 50% VENx ton toff 50% 50% toff ton 90% 90% VOUTx VOUTx 10% 10% VOLTAGE WAVEFORMS Figure 2. Test Circuit and Voltage Waveforms IOS IOUTx tIOS Figure 3. Response Time to Short Circuit Waveform Decreasing Load Resistance VOUTx Decreasing Load Resistance IOUTx IOS Figure 4. Output Voltage vs.
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TPS2560 TPS2561 SLVS930A – DECEMBER 2009 – REVISED FEBRUARY 2012 www.ti.com TYPICAL CHARACTERISTICS TPS2560/61 VIN = 5V 0.1 uF 2x RFAULT 100 kΩ IN IN ILIM FAULT 1 FAULT 2 GND EN1 EN2 Power Pad Faultx Signals Control Signals VOUT1 OUT1 OUT2 VOUT2 24.9kΩ 2x 150 µF Figure 5.
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TPS2560 TPS2561 SLVS930A – DECEMBER 2009 – REVISED FEBRUARY 2012 www.ti.com TYPICAL CHARACTERISTICS (continued) 700 2.335 IIN - Supply Current, Output Disabled - nA UVLO - Undervoltage Lockout - V 2.33 2.325 UVLO Rising 2.32 2.315 2.31 2.305 UVLO Falling 2.3 600 500 400 VIN = 6.5 V 300 200 VIN = 2.5 V 100 0 2.295 2.29 -50 0 50 TJ - Junction Temperature - °C 100 -100 -50 150 Figure 10. UVLO – Undervoltage Lockout – V IIN Supply Current vs.
PAGE 9
TPS2560 TPS2561 SLVS930A – DECEMBER 2009 – REVISED FEBRUARY 2012 www.ti.com TYPICAL CHARACTERISTICS (continued) 3.0 1.0 2.5 0.8 0.7 IDS - Static Drain-Source Current - A IDS - Static Drain-Source Current - A 0.9 TA = -40°C 0.6 TA = 25°C 0.5 TA = 125°C 0.4 0.3 RILIM = 61.9 kW 0.2 TJ = -40°C 2.0 TJ = 25°C 1.5 1.0 TJ = 125°C RILIM = 20kΩ 0.5 0.1 0 0 0 20 40 60 80 100 VIN - VOUT - mV/div 120 140 Figure 16. Switch Current Vs.
PAGE 10
TPS2560 TPS2561 SLVS930A – DECEMBER 2009 – REVISED FEBRUARY 2012 www.ti.com DETAILED DESCRIPTION OVERVIEW The TPS2560/61 is a dual-channel, current-limited power-distribution switch using N-channel MOSFETs for applications where short circuits or heavy capacitive loads will be encountered. This device allows the user to program the current-limit threshold between 250 mA and 2.8 A (typ) per channel via an external resistor.
PAGE 11
TPS2560 TPS2561 SLVS930A – DECEMBER 2009 – REVISED FEBRUARY 2012 www.ti.com FAULTx RESPONSE The FAULTx open-drain outputs are asserted (active low) on an individual channel during an overcurrent or overtemperature condition. The TPS2560/61 asserts the FAULTx signal until the fault condition is removed and the device resumes normal operation on that channel.
PAGE 12
TPS2560 TPS2561 SLVS930A – DECEMBER 2009 – REVISED FEBRUARY 2012 www.ti.com APPLICATION INFORMATION 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, a 0.1μF or greater ceramic bypass capacitor between IN and GND is recommended as close to the device as possible for local noise decoupling.
PAGE 13
TPS2560 TPS2561 SLVS930A – DECEMBER 2009 – REVISED FEBRUARY 2012 www.ti.com 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 2 A must be delivered to the load so that the minimum desired current-limit threshold is 2000 mA. Use the IOS equations and Figure 18 to select RILIM. IOSmin (mA) = 2000mA IOSmin (mA) = 61200V RILIM1.056kW 1 æ 61200V ö÷1.
PAGE 14
TPS2560 TPS2561 SLVS930A – DECEMBER 2009 – REVISED FEBRUARY 2012 www.ti.com ACCOUNTING FOR RESISTOR TOLERANCE The previous sections described the selection of RILIM given certain application requirements and the importance of understanding the current-limit threshold tolerance. The analysis focused only on the TPS2560/61 performance and assumed an exact resistor value. However, resistors sold in quantity are not exact and are bounded by an upper and lower tolerance centered around a nominal resistance.
PAGE 15
TPS2560 TPS2561 SLVS930A – DECEMBER 2009 – REVISED FEBRUARY 2012 www.ti.com POWER DISSIPATION AND JUNCTION TEMPERATURE The low on-resistance of the N-channel MOSFET allows small surface-mount packages to pass large currents. It is good design practice to estimate power dissipation and junction temperature. The below analysis gives an approximation for calculating junction temperature based on the power dissipation in the package.
PAGE 16
TPS2560 TPS2561 SLVS930A – DECEMBER 2009 – REVISED FEBRUARY 2012 www.ti.com 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 with an external resistor and capacitor. During a fault condition, FAULTx pulls ENx low disabling the part.
PAGE 17
TPS2560 TPS2561 SLVS930A – DECEMBER 2009 – REVISED FEBRUARY 2012 www.ti.com TWO-LEVEL CURRENT-LIMIT CIRCUIT Some applications require different current-limit thresholds depending on external system conditions. Figure 21 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 discussed Programming the Current-Limit Threshold section).
PAGE 18
TPS2560 TPS2561 SLVS930A – DECEMBER 2009 – REVISED FEBRUARY 2012 www.ti.com REVISION HISTORY Changes from Original (December 2009) to Revision A Page • Changed VENx to VENx in RECOMMENDED OPERATING CONDITIONS ........................................................................... 3 • Changed VENx to VENx in RECOMMENDED OPERATING CONDITIONS ...........................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 23-Feb-2014 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.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing TPS2560DRCR SON DRC 10 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 3000 330.0 12.4 3.3 3.3 1.1 8.0 12.0 Q2 TPS2560DRCT SON DRC 10 250 180.0 12.4 3.3 3.3 1.1 8.0 12.0 Q2 TPS2561DRCR SON DRC 10 3000 330.0 12.4 3.3 3.3 1.1 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS2560DRCR SON DRC 10 3000 367.0 367.0 35.0 TPS2560DRCT SON DRC 10 250 210.0 185.0 35.0 TPS2561DRCR SON DRC 10 3000 367.0 367.0 35.0 TPS2561DRCT SON DRC 10 250 210.0 185.0 35.
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