Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - power management - special purpose 180 µA MSOP 8 PowerPad

TPS2511

GND

ILIM_SET

PAD

OUT

UDG-12095

ILIM

USB

GND

D+

D−

BUS

USB Connector

OUT

5.0 V

GND

AC-to-DC Converter

Buck DC-to-DC

Converter

5.0 V

OUT

Power Supply

TPS2511

www.ti.com

SLUSB18 –JUNE 2012

USB Dedicated Charging Port Controller and Current Limiting Power Switch

Check for Samples: TPS2511

FEATURES

DESCRIPTION

The TPS2511 is a USB dedicated charging port

• Supports a USB DCP Shorting D+ Line to D–

(DCP) controller and current limiting power switch. An

Line

auto-detect feature monitors USB data line voltage,

• Supports a USB DCP Applying 2.0 V on D+

and automatically provides the correct electrical

Line and 2.7 V on D– Line (or a USB DCP

signatures on the data lines to charge compliant

Applying 2.7 V on D+ Line and 2.0 V on D–

devices among the following dedicated charging

Line)

schemes:

• Divider DCP, required to apply 2.7 V and 2.0 V on

• Supports a USB DCP Applying 1.2 V on D+

the D+ and D– lines respectively or 2.0 V and 2.7

and D– Lines

V on the D+ and D– lines respectively

• Automatically Switch D+ and D– Lines

• BC1.2 DCP, required to short the D+ Line to the

Connections for an Attached Device

D– Line

• Hiccup Mode for Output Short-Circuit

• 1.2 V on both D+ and D– Lines

Protection

The TPS2511 is a 70-mΩ power-distribution switch

• Provides CS Pin for USB Cable Compensation

intended for applications where heavy capacitive

• Programmable Current Limit (ILIM_SET Pin)

loads and short-circuits are likely to be encountered.

• Accurate ±10% Current-Limit at 2.3 A (typ)

This device also provides hiccup mode when the

output (OUT) voltage is less than 3.80 V (typ) or

• 70 mΩ (typ) High-Side MOSFET

when an over temperature protection occurs during

• Compatible with USB 2.0 and 3.0 Power Switch

an overload condition. Accurate and programmable

Requirements

current limit provides flexibility and convenience for

• Operating Range: 4.5 V to 5.5 V

applications. The TPS2511 provides a CS pin for

USB cable resistance compensation and an EN pin to

• Available in MSOP, 8-Pin Package

control the device turn on and turn off.

APPLICATIONS

• Vehicle USB Power Charger

• AC-DC Wall Adapter with USB Port

• Other USB Charger

SIMPLIFIED 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.

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
TPS2511 www.ti.com SLUSB18 – JUNE 2012 USB Dedicated Charging Port Controller and Current Limiting Power Switch Check for Samples: TPS2511 FEATURES DESCRIPTION • The TPS2511 is a USB dedicated charging port (DCP) controller and current limiting power switch. An auto-detect feature monitors USB data line voltage, and automatically provides the correct electrical signatures on the data lines to charge compliant devices among the following dedicated charging schemes: • Divider DCP, required to apply 2.
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TPS2511 SLUSB18 – JUNE 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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TPS2511 www.ti.com SLUSB18 – JUNE 2012 RECOMMENDED OPERATING CONDITIONS voltages are referenced to GND (unless otherwise noted), positive current are into pins. MIN MAX VIN Input voltage of IN 4.5 5.5 VCS Input voltage of CS 0 5.5 VEN Input voltage of EN 0 5.5 VDP DP data line input voltage 0 5.
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TPS2511 SLUSB18 – JUNE 2012 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Conditions are –40°C ≤ (TJ = TA) ≤ 125°C, 4.5 V ≤ VIN ≤ 5.5 V, VEN = VIN and RILIM_SET = 22.1 kΩ. Positive current are into pins. Typical values are at 25°C. All voltages are with respect to GND (unless otherwise noted).
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TPS2511 www.ti.com SLUSB18 – JUNE 2012 OUT 50% VEN RL 50% ton CL toff 90% VOUT Figure 1. Output Rise and Fall Test Load 10% Figure 2. Enable Timing, Active High Enable 90% IOS VOUT tr IOUT tf 10% Figure 3. Power-On and Off tIOS Figure 4.
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TPS2511 SLUSB18 – JUNE 2012 www.ti.com FUNCTIONAL BLOCK DIAGRAM Current Sense IN CS OUT Current Limit ILIM_SET Disable+UVLO GND 8-ms Deglitch Charge Pump EN Driver UVLO Thermal Sense Hiccup CS REF + S1 DP S2 S4 Auto Detect S3 + – + – 2.0 V + – 2.7 V DM + – 1.
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TPS2511 www.ti.com SLUSB18 – JUNE 2012 DEVICE INFORMATION DGN PACKAGE (MSOP) 8 PINS (Top View) GND 1 8 OUT ILIM_SET 2 7 DM IN 3 6 DP CS 4 5 EN PIN FUNCTIONS PIN NAME NO. TYPE (1) DESCRIPTION CS 4 O Active low open -drain output, when OUT current is more than approximately half of the current limit set by a resistor on ILIM_SET pin, the output is active low. Maximum sink current is 10 mA.
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TPS2511 SLUSB18 – JUNE 2012 www.ti.com TYPICAL CHARACTERISTICS 4.8 8 8 4 3.2 2 2.4 0 1.6 -2 0.8 0 -7m -5m Time - s -3m 3.2 4 2.4 2 1.6 0 0.8 -2 CS IOUT OUT EN -6 -9m 6 -0.8 1m -1m -4 -4m -2m 0 -0.8 3m 6 V IN = 5 V, C OUT = 22 m F, R ILIM_SET = 22.1 k W , R L = 2.5 W V IN = 5 V, C OUT = 22 m F, R L = 2.5 W 4 OUT, EN, DP, DM - V 4 2 0 2 0 DM EN OUT DP -2m 0 2m 4m -2 -4m 6m OUT DP -2m DM 0 EN 2m 4m Figure 8. Enable into 2.5-Ω Load Figure 9.
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TPS2511 www.ti.com SLUSB18 – JUNE 2012 TYPICAL CHARACTERISTICS (continued) 4 8 3.2 6 4 4 2.4 4 3.2 2 1.6 2 2.4 0 0.8 0 1.6 0 -2 0.8 -0.8 -4 -2 22 mF 222 mF OUT EN -6 -6m -4m -2m 0 2m 4m 6m Time - s 882 mF 1542 mF 8m 10m 12m -1.6 14m -6 -10m 0 8 -0.8 40m 30m Figure 13. Enable into 1.83-ΩLoad 3 7 4 V IN = 5 V, C OUT = 22 m F, R ILIM_SET = 22.1 k W , R L = 1 W 6 3.2 4 2.4 2 1.6 EN, DP, DM - V V IN = 5 V, C OUT = 22 m F, R ILIM_SET = 22.
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TPS2511 SLUSB18 – JUNE 2012 www.ti.com TYPICAL CHARACTERISTICS (continued) 6 3 3.2 VDM 2 2 1 0 0 IOUT CS -2 -220m -120m -20m 80m DP and DM Output Voltage - V 4 IOUT - A CS - V V IN = 5 V, C OUT = 22 m F, R ILIM_SET = 22.1 k W 2.4 2 -20 0 Time - s Figure 18. Output Current Sensing Report 20 40 60 80 TJ - Junction Temperature - °C 100 120 Figure 19. DP and DM Output Voltage vs Temperature 230 2.4 V IN = 5 V, R ILIM_SET = 16.
PAGE 11
TPS2511 www.ti.com SLUSB18 – JUNE 2012 DETAILED DESCRIPTION Overview The following overview references various industry standards. It is always recommended to consult the latest standard to ensure the most recent and accurate information. Rechargeable portable equipment requires an external power source to charge its batteries. USB ports are convenient locations for charging because of an available 5-V power source.
PAGE 12
TPS2511 SLUSB18 – JUNE 2012 www.ti.com The second step, the secondary detection, is necessary for portable equipment to determine between a CDP and a DCP. The portable device outputs a nominal 0.6 V output on its D- line and reads the voltage input on its D+ line. The portable device concludes it is connected to a CDP if the data line being remains is less than the nominal data detect voltage of 0.3 V.
PAGE 13
TPS2511 www.ti.com SLUSB18 – JUNE 2012 Applying 1.2 V to the D+ Line and 1.2 V to the D– Line As shown in Figure 27, some tablet USB chargers require 1.2 V on the shorted data lines of the USB connector. The maximum resistance between the D+ line and the D- line is 200 Ω. VBUS D− 200 W (max) D+ GND + – USB Connector VBUS 5.0 V 1.2 V GND UDG-12103 Figure 27. DCP Applying 1.2 V to the D+ Line and 1.
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TPS2511 SLUSB18 – JUNE 2012 www.ti.com OUT 8 VBUS DM S1 D– 6 D+ S2 S4 GND USB Connector 5V Short Mode S4: ON S1, S2, S3: OFF 1.2 V on DP and DM S3, S4: ON S1, S2: OFF DP S3 Divider 2 S1, S2: ON S3, S4: OFF 7 + – 2V + – 2.7 V + – 1.2 V GND 1 TPS2511 GND UDG-12099 Figure 28. TPS2511 DCP Auto-Detect Functional Diagram Overcurrent Protection During an overload condition, the TPS2511 maintains a constant output current and reduces the output voltage accordingly.
PAGE 15
TPS2511 www.ti.com SLUSB18 – JUNE 2012 Current-Limit Threshold The TPS2511 has a current-limiting threshold that is externally programmed with a resistor. Equation 1 and Figure 30 help determine the typical current-limit threshold: 51228 IOS_ TYP = RILIM where • • IOS_TYP is in mA and RILIM is in kΩ IOS_TYP has a better accuracy if RILIM is less than 210 kΩ 3.5 (1) IOS_TYP VIN = 5 V OUT Short Circuit Current Limit - A 3 2.5 2 1.5 1 0.
PAGE 16
TPS2511 SLUSB18 – JUNE 2012 www.ti.com Thermal Sense The TPS2511 provides thermal protection from two independent thermal sensing circuits that monitor the operating temperature of the power distribution switch and turn off for 12 seconds (typ) if the temperature exceeds recommended operating conditions. The device operates in constant-current mode during an overcurrent condition and OUT pin voltage is above 3.8 V (typ), which has a relatively large voltage drop across power switch.
PAGE 17
TPS2511 www.ti.com SLUSB18 – JUNE 2012 APPLICATION INFORMATION Programming the Current Limit Threshold The user-programmable RILIM resistor on the ILIMIT_SET pin sets the current limit. The TPS2511 uses an internal regulation loop to provide a regulated voltage on the ILIM_SET pin. The current-limiting threshold is proportional to the current sourced out of the ILIM_SET pin. The recommended 1% resistor range for RILIM is between 16.
PAGE 18
TPS2511 SLUSB18 – JUNE 2012 www.ti.com Current Limit Setpoint Example In the following example, choose the ILIM_SET resistor to ensure that TPS2511 does not trip off under worst case conditions of current limit and resistor tolerance (assume 1% resistor tolerance). For this example, IOS_MIN = 2100 mA. 51228 IOS _ MIN = = 2100 mA RILIM1.03 (4) 1 1 æ 51228 ö1.03 æ 51228 ö1.03 ÷ =ç = 22.227 kW RILIM = ç ÷ ç IOS _ MIN ÷ è 2100 ø è ø (5) Including resistor tolerance, target nominal resistance value: 22.
PAGE 19
TPS2511 www.ti.com SLUSB18 – JUNE 2012 Output Voltage (V) 5.25 5.15 5.00 4.75 4.66 5 VOUT with compensation VPD_IN with compensation 5 VOUT without compensation VPD_IN without compensation 0 0.5 1.5 1.0 Output Current (A) 2.0 2.5 UDG-12109 Figure 34. TPS2511 CS Function Equation 8 through Equation 11 refer to Figure 33. The power supply output voltage is calculated in Equation 8. (R1 + R 2 + R 3 )´ VFB 5VOUT = R3 (8) 5VOUT and VFB are known. If R3 is given and R1 is fixed, R2 can be calculated.
PAGE 20
TPS2511 SLUSB18 – JUNE 2012 www.ti.com TPS2511 5 4 2 IN OUT DM EN CS DP ILIM_SET GND 8 7 6 1 VBUS DD+ GND TPS2511 5.0 V Power Supply PAD 3 IN OUT 8 5 EN DM 7 4 CS DP 6 2 ILIM_SET GND 1 RILIM VBUS DD+ GND USB Connector 3 USB Connector 5.0 V Power Supply PAD RILIM UDG-12104 UDG-12105 Figure 35. 10-W USB Charger Application with Power Switch Figure 36.
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PACKAGE OPTION ADDENDUM www.ti.
PAGE 22
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device TPS2511DGNR Package Package Pins Type Drawing MSOPPower PAD DGN 8 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2500 330.0 12.4 Pack Materials-Page 1 5.3 B0 (mm) K0 (mm) P1 (mm) 3.4 1.4 8.0 W Pin1 (mm) Quadrant 12.
PAGE 23
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS2511DGNR MSOP-PowerPAD DGN 8 2500 366.0 364.0 50.
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