Datasheet

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TPS2113A

STAT

VSNS

ILIM

IN1

OUT

IN2

GND

ILIM

0.1 Fm

IN2:2.8Vto5.5V

IN1:2.8Vto5.5V

Switch

Status

TPS2112A

TPS2113A

www.ti.com

SBVS045C –MARCH 2004–REVISED MAY 2012

AUTOSWITCHING POWER MUX

Check for Samples: TPS2112A, TPS2113A

FEATURES

APPLICATIONS

• Two-Input, One-Output Power Multiplexer with

• PCs

Low r

DS(on)

Switches:

• PDAs

– 84 mΩ Typ (TPS2113A)

• Digital Cameras

– 120 mΩ Typ (TPS2112A)

• Modems

• Reverse and Cross-Conduction Blocking

• Cell Phones

• Wide Operating Voltage: 2.8 V to 5.5 V

• Digital Radios

• Low Standby Current: 0.5 μA Typ

• MP3 Players

• Low Operating Current: 55 μA Typ

DESCRIPTION

• Adjustable Current Limit

The TPS211xA family of power multiplexers enables

• Controlled Output Voltage Transition Time:

seamless transition between two power supplies

– Limits Inrush Current

(such as a battery and a wall adapter), each

– Minimizes Output Voltage Hold-Up

operating at 2.8 V to 5.5 V and delivering up to 2 A,

depending on package. The TPS211xA family

Capacitance

includes extensive protection circuitry, including user-

• CMOS- and TTL-Compatible Control Inputs

programmable current limiting, thermal protection,

• Auto-Switching Operating Mode

inrush current control, seamless supply transition,

• Thermal Shutdown

cross-conduction blocking, and reverse-conduction

blocking. These features greatly simplify designing

• Available in TSSOP-8 and 3-mm × 3-mm SON-8

power multiplexer applications.

Packages

space

TYPICAL APPLICATION

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.

2All trademarks are the property of their respective owners.

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 (27 pages)

PAGE 1
TPS2112A TPS2113A www.ti.com SBVS045C – MARCH 2004 – REVISED MAY 2012 AUTOSWITCHING POWER MUX Check for Samples: TPS2112A, TPS2113A FEATURES APPLICATIONS • • • • • • • • 1 2 • • • • • • • • • • Two-Input, One-Output Power Multiplexer with Low rDS(on) Switches: – 84 mΩ Typ (TPS2113A) – 120 mΩ Typ (TPS2112A) Reverse and Cross-Conduction Blocking Wide Operating Voltage: 2.8 V to 5.5 V Low Standby Current: 0.
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TPS2112A TPS2113A SBVS045C – MARCH 2004 – REVISED MAY 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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TPS2112A TPS2113A www.ti.com SBVS045C – MARCH 2004 – REVISED MAY 2012 RECOMMENDED OPERATING CONDITIONS TPS2112A, TPS2113A MIN Input voltage at IN1, VI(IN1) Input voltage at IN2, VI(IN2) UNIT 5.5 VI(IN2) < 2.8 V 2.8 5.5 VI(IN1) ≥ 2.8 V 1.5 5.5 VI(IN1) < 2.8 V 2.8 5.5 0 5.5 TPS2112APW 0.31 0.75 TPS2113APW 0.63 1.25 TPS2113ADRB, TJ ≤ 105°C 0.63 2 A –40 125 °C Operating virtual junction temperature, TJ (1) MAX 1.
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TPS2112A TPS2113A SBVS045C – MARCH 2004 – REVISED MAY 2012 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Over recommended operating junction temperature, IO(OUT) = 0 A, and RILIM = 400 Ω, unless otherwise noted. TPS2112A, TPS2113A PARAMETER TEST CONDITIONS MIN TYP MAX 0.5 2 UNIT SUPPLY AND LEAKAGE CURRENTS, Continued Quiescent current from IN1 (standby) Quiescent current from IN2 (standby) EN = High (inactive), VI(IN1) = 5.5 V, VI(IN2) = 3.3 V μA EN = High (inactive), VI(IN1) = 3.
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TPS2112A TPS2113A www.ti.com SBVS045C – MARCH 2004 – REVISED MAY 2012 ELECTRICAL CHARACTERISTICS (continued) Over recommended operating junction temperature, IO(OUT) = 0 A, and RILIM = 400 Ω, unless otherwise noted. TPS2112A, TPS2113A PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 80 100 120 mV REVERSE CONDUCTION BLOCKING Minimum output-to-input voltage difference to block switching ΔVO(I_block) EN = high, VI(IN1) = 3.3 V and VI(IN2) = VI(VSNS) = 0 V.
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TPS2112A TPS2113A SBVS045C – MARCH 2004 – REVISED MAY 2012 www.ti.com PARAMETER MEASUREMENT INFORMATION TIMING WAVEFORMS VO(OUT) 90% 90% 10% 0V 10% tR tPLH1 tF tPHL1 EN Switch Off Switch Enabled Switch Off (a) 5V 4.8 V VO(OUT) 3.4 V 3.3 V tT VSNS Switch #1 Enabled Switch #2 Enabled (b) 5V VO(OUT) 1.5 V 4.65 V 1.85 V tPLH2 tPHL2 VSNS Switch #1 Enabled Switch #2 Enabled Switch #1 Enabled (c) Figure 1.
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TPS2112A TPS2113A www.ti.com SBVS045C – MARCH 2004 – REVISED MAY 2012 DEVICE INFORMATION TRUTH TABLE (1) (2) EN VI(VSNS) > 0.8 V (1) VI(IN2) > VI(IN1) STAT OUT (2) 0 0 Yes X 0 IN1 No No 0 IN1 0 No Yes Hi-Z IN2 1 X X 0 Hi-Z X = Don’t care. The undervoltage lockout circuit causes the output (OUT) to go Hi-Z if the selected power supply does not exceed the IN1/IN2 UVLO, or if neither of the supplies exceeds the internal VDD UVLO.
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TPS2112A TPS2113A SBVS045C – MARCH 2004 – REVISED MAY 2012 www.ti.com FUNCTIONAL BLOCK DIAGRAM Internal VDD 1 mA Vf = 0 V IN1 IN2 Vf = 0 V IO(OUT) Q1 8 7 OUT Q2 6 Charge Pump k ´ IO(OUT) TPS2112A: k = 0.2% TPS2113A: k = 0.1% VDD UVLO ILIM 0.5 V Q2 is on EN2 EN1 Q1 is on 100 mV UVLO (VDD) VO(OUT) > VI(INx) UVLO (IN2) + IN1 UVLO 0.6 V Cross-Conduction Detector + IN2 UVLO 4 UVLO (IN1) Control Logic EN VSNS 2 EN1 Thermal Sense IN2 3 VI(SNS) > 0.8 V IN1 0.
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TPS2112A TPS2113A www.ti.com SBVS045C – MARCH 2004 – REVISED MAY 2012 TYPICAL CHARACTERISTICS OUTPUT SWITCHOVER RESPONSE 3.3 V TPS2113A 1 NC f = 28 Hz 22% Duty Cycle VI(VSNS) 2 V/div 2 3 4 STAT EN VSNS ILIM 0.1 mF 8 IN1 7 OUT 6 IN2 5 GND 1 mF 50 W 400 W VO(OUT) 2 V/div 5V 0.1 mF Output Switchover Response Test Circuit t - Time - 1 ms/div Figure 2. OUTPUT TURN-ON RESPONSE VI(EN) 2 V/div 5V TPS2113A 1 f = 28 Hz 78% Duty Cycle NC 2 3 4 STAT EN VSNS ILIM 0.
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TPS2112A TPS2113A SBVS045C – MARCH 2004 – REVISED MAY 2012 www.ti.com TYPICAL CHARACTERISTICS (continued) OUTPUT SWITCHOVER VOLTAGE DROOP VI(VSNS) 2 V/div CL = 1 mF VO(OUT) 2 V/div CL = 0 m F t - Time - 40 ms/div 5V TPS2113A SW1 1 NC f = 580 Hz 90% Duty Cycle 2 3 4 0.1 mF STAT EN IN1 OUT VSNS ILIM IN2 GND 1 kW 8 7 6 CL 5 50 W 400 W 0.1 mF Output Switchover Voltage Droop Test Circuit Figure 4.
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TPS2112A TPS2113A www.ti.com SBVS045C – MARCH 2004 – REVISED MAY 2012 TYPICAL CHARACTERISTICS (continued) OUTPUT SWITCHOVER VOLTAGE DROOP vs LOAD CAPACITANCE 5.0 VI = 5 V DVO(OUT) - Output Voltage Droop - V 4.5 4.0 3.5 3.0 RL= 10 W 2.5 2.0 1.5 RL= 50 W 1.0 0.5 0 0.1 1 10 100 CL - Load Capacitance - mF VI SW1 TPS2113A 1 NC f = 28 Hz 50% Duty Cycle 2 3 4 0.1 mF STAT EN IN1 OUT VSNS ILIM IN2 GND 1 kW 8 7 6 5 400 W 0.1 mF 0.
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TPS2112A TPS2113A SBVS045C – MARCH 2004 – REVISED MAY 2012 www.ti.com TYPICAL CHARACTERISTICS (continued) AUTO SWITCHOVER VOLTAGE DROOP VI(IN1) 2 V/div 5V TPS2113A 0.1 mF 1 kW 1 2 f = 220 Hz 20% Duty Cycle 3 4 VO(OUT) 2 V/div 400 W STAT IN1 OUT EN VSNS ILIM IN2 GND 8 7 6 VOUT 3.3 V 10 mF 5 50 W 0.1 mF 75% less output voltage droop compared to TPS2113 Auto Switchover Voltage Droop Test Circuit t - Time - 250 ms/div Figure 6.
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TPS2112A TPS2113A www.ti.com SBVS045C – MARCH 2004 – REVISED MAY 2012 TYPICAL CHARACTERISTICS (continued) INRUSH CURRENT vs LOAD CAPACITANCE 300 II - Inrush Current - mA 250 200 VI = 5 V 150 VI = 3.3 V 100 50 0 20 0 60 40 80 100 CL - Load Capacitance - mF VI TPS2113A f = 28 Hz 90% Duty Cycle NC 1 2 3 4 0.1 mF STAT EN IN1 OUT VSNS ILIM IN2 GND 8 To Oscilloscope 7 6 5 50 W 400 W 0.1 mF 1 mF 10 mF 47 mF 100 mF Output Capacitor Inrush Current Test Circuit Figure 7.
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TPS2112A TPS2113A SBVS045C – MARCH 2004 – REVISED MAY 2012 www.ti.com TYPICAL CHARACTERISTICS (continued) SWITCH ON-RESISTANCE vs JUNCTION TEMPERATURE SWITCH ON-RESISTANCE vs SUPPLY VOLTAGE 120 180 TPS2112A rDS(on) - Switch-On Resistance - mW rDS(on) - Switch-On Resistance - mW 115 160 140 TPS2112A 120 100 TPS2113A 80 110 105 100 95 90 TPS2113A 85 80 60 -50 0 50 100 2 150 TJ - Junction Temperature - °C 4 5 6 VI(INx) - Supply Voltage - V Figure 8. Figure 9.
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TPS2112A TPS2113A www.ti.com SBVS045C – MARCH 2004 – REVISED MAY 2012 TYPICAL CHARACTERISTICS (continued) SUPPLY CURRENT vs JUNCTION TEMPERATURE SUPPLY CURRENT vs JUNCTION TEMPERATURE 1.2 70 II(INx) - Supply Current - mA II(INx) - Supply Current - mA 1.0 80 Device Disabled VI(IN1) = 5.5 V VI(IN2) = 3.3 V IO(OUT) = 0 A II(IN1) = 5.5 V 0.8 0.6 0.4 60 IN1 Switch is On VI(IN1) = 5.5 V VI(IN2) = 3.3 V IO(OUT) = 0 A II(IN1) 50 40 30 20 0.2 10 II(IN2) = 3.
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TPS2112A TPS2113A SBVS045C – MARCH 2004 – REVISED MAY 2012 www.ti.com APPLICATION INFORMATION Some applications have two energy sources, one of which should be used in preference to another. Figure 14 shows a circuit that will connect IN1 to OUT until the voltage at IN1 falls below a user-specified value. Once the voltage on IN1 falls below this value, the TPS2112A/3A will select the higher of the two supplies. This usually means that the TPS2112A/3A will swap to IN2. Switch Status IN1: 2.8 V to 5.
PAGE 17
TPS2112A TPS2113A www.ti.com SBVS045C – MARCH 2004 – REVISED MAY 2012 DETAILED DESCRIPTION AUTO-SWITCHING MODE The TPS2112A/3A only supports the auto-switching mode. In this mode, OUT connects to IN1 if VI(VSNS) is greater than 0.8 V, otherwise OUT connects to the higher of IN1 and IN2. The VSNS terminal includes hysteresis equal to 3.75% to 7.5% of the threshold selected for transition from the primary supply to the higher of the two supplies.
PAGE 18
TPS2112A TPS2113A SBVS045C – MARCH 2004 – REVISED MAY 2012 www.ti.com REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision B (March 2010) to Revision C Page • Changed description of power supplies in Description section ............................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com (3) 11-Apr-2013 MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) Multiple Top-Side Markings will be inside parentheses. Only one Top-Side Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Top-Side Marking for that device.
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PACKAGE MATERIALS INFORMATION www.ti.com 11-Jun-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TPS2112APWR TSSOP PW 8 2000 330.0 12.4 7.0 3.6 1.6 8.0 12.0 Q1 TPS2113ADRBR SON DRB 8 3000 330.0 12.4 3.3 3.3 1.1 8.0 12.0 Q2 TPS2113ADRBT SON DRB 8 250 180.0 12.4 3.3 3.3 1.1 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 11-Jun-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS2112APWR TPS2113ADRBR TSSOP PW 8 2000 367.0 367.0 35.0 SON DRB 8 3000 367.0 367.0 35.0 TPS2113ADRBT SON DRB 8 250 210.0 185.0 35.0 TPS2113APWR TSSOP PW 8 2000 367.0 367.0 35.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.