Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - hot swap controller Multi-purpose QFN 16 Surface-mount

16 15

9876

OUT

ILIM IFLT CTGNDRTRY

FLT

TPS2590

UDG-10102

0.1 mF

49.9 kW40.2 kW

LOAD

Optional: To

System Monitor

Output To Voltage Bus

or DC-to-DC Converter

Input

Voltage Bus

TPS2590

www.ti.com

SLUS960F –JULY 2009–REVISED MAY 2013

3-V to 20-V High-Current Load Switch

Check for Samples: TPS2590

FEATURES

DESCRIPTION

The TPS2590 provides highly integrated hot-swap

• Integrated Pass MOSFET

power management and superior protection in

• 3-V to 20-V Bus Operation

applications where the load is powered by voltages

• Programmable Fault Timer

between 3.0 V and 20 V. This device is intended for

systems where a voltage bus must be protected to

• Programmable Fault Current

prevent load shorts from interrupting or damaging

• Programmable Hard Current Limit

other system components. The TPS2590 is in a 16-

• Fast Disable

pin QFN package.

• Thermal Shutdown

The TPS2590 has multiple programmable protection

• Load Fault Alert

features. Load protection is accomplished by a non-

current limiting fault threshold, a hard current limit

• Latching and Auto-retry Operation

threshhold, and a fault timer. The dual current

• 4-mm x 4-mm QFN

thresholds allow the system to draw high current for

• -40°C to 125°C Junction Temperature Range

short periods without causing a voltage droop at the

load. An example of this is a disk drive startup. This

• UL Listed - File Number E169910

technique is ideal for loads that experience brief high

demand, but benefit from protection levels consistent

APPLICATIONS

with average current draw.

• RAID Arrays

Hotswap MOSFET protection is provided by power

• Telecommunications

limit circuitry which protects the internal MOSFET

• Plug-In Circuit Boards

against SOA related failures.

• Disk Drive

The TPS2590 provides a fault indicator output and

• Notebooks / Netbooks

allows latch off or retry on fault.

12-V, 3.5-A 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.

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 (23 pages)

PAGE 1
TPS2590 www.ti.com SLUS960F – JULY 2009 – REVISED MAY 2013 3-V to 20-V High-Current Load Switch Check for Samples: TPS2590 FEATURES DESCRIPTION • • • • • • • • • • • • The TPS2590 provides highly integrated hot-swap power management and superior protection in applications where the load is powered by voltages between 3.0 V and 20 V. This device is intended for systems where a voltage bus must be protected to prevent load shorts from interrupting or damaging other system components.
PAGE 2
TPS2590 SLUS960F – JULY 2009 – REVISED MAY 2013 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.
PAGE 3
TPS2590 www.ti.com SLUS960F – JULY 2009 – REVISED MAY 2013 ELECTRICAL CHARACTERISTICS Over operating free-air temperature range, VIN = 3 V – 20 V, EN = 0 V, FLT = open, RTRY = open, CT = open, RRLIM = 40.2 kΩ, RRFLT = 49.9 kΩ, No external capacitor connected to OUT (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT IN UVLO VIN ↑ 2.6 Hysteresis Bias current 2.85 2.9 150 V mV EN = 2.4 V 25 100 μA EN = 0 V 3.9 5 mA 29.5 42.0 mΩ 5 7.5 W 0.77 1.
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TPS2590 SLUS960F – JULY 2009 – REVISED MAY 2013 www.ti.com DEVICE INFORMATION TPS2590 FUNCTIONAL BLOCK DIAGRAM I(D) Detector 1 IN IOUT 2 11 OUT 10 V(DS) Detector 3 + 4 - S 10 uA Q Pump Internal Rail 14 13 GND 12 LCA + 5 Constant Power Engine + 1.0V PLIM Fast Trip Comparator ILIM 7 15 FLT + 1.6 x ILIM + IFLT 8 ´200kW + I FAULT 2.85 V / 2.70 V 1V¸RRFLT + VIN IN 10MΩ THERMAL SHUTDOWN EN 16 S Q R Q + 16.8MΩ 1.15 V / 1.00 V 3V 1.4V 100kΩ CT + 35 uA 50kΩ 0.
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TPS2590 www.ti.com SLUS960F – JULY 2009 – REVISED MAY 2013 IN 1 IN 2 EN FLT GND GND TPS2590 PINOUT 16 15 14 13 12 OUT 11 OUT TPS2590 4 9 5 6 7 8 IFLT IN ILIM 10 OUT RTRY 3 GND IN CT TERMINAL FUNCTIONS FUNCTION TPS2590 DESCRIPTION EN 16 Device is enabled when this pin is pulled low. IN 1-4 Power In and control supply voltage. RTRY 6 If low, the TPS2590 will attempt to restart after an overcurrent fault.
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TPS2590 SLUS960F – JULY 2009 – REVISED MAY 2013 www.ti.com FLT: Open-drain output that pulls low on any condition that causes the output to open. These conditions are either an overload with a fault time-out, or a thermal shutdown. FLT becomes operational before UV, when IN is greater than 1 V. IFAULT may not be set below 1 A to maintain the Fault Current Limit threshold accuracy listed in Electrical Characteristics.
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TPS2590 www.ti.com SLUS960F – JULY 2009 – REVISED MAY 2013 TYPICAL CHARACTERISTICS CURRENT LIMIT vs JUNCTION TEMPERATURE FAULT CURRENT vs JUNCTION TEMPERATURE 2.20 2.20 RMAX = 100 kΩ 2.15 RFLT = 100 k 2.15 IFAULT – Fault Current – A IL IM – Current Limit – A 2.10 2.50 2.00 1.95 1.90 2.10 2.50 2.00 1.95 1.90 1.85 1.85 1.80 –50 1.80 –50 0 50 100 150 TJ TJ – Junction Temperature– °C 50 100 – Junction Temperature – °C Figure 1. Figure 2.
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TPS2590 SLUS960F – JULY 2009 – REVISED MAY 2013 www.ti.com TYPICAL CHARACTERISTICS (continued) 5V/div FLT 5V/div CT 1A/div ILOAD 2V/div VOUT 2V/div FLT 1V/div CT 1A/div ILOAD 2V/div VOUT 2ms/div 5ms/div Figure 5. 12-V Startup into 15-Ω, 700-μF Load 2V/div FLT 1V/div CT 1A/div ILOAD 2V/div VOUT Figure 6. 12-V Input Added to an 8-Ω Load 2V/div FLT 1V/div CT 1A/div ILOAD 2V/div VOUT 5ms/div 5ms/div Figure 7.
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TPS2590 www.ti.com SLUS960F – JULY 2009 – REVISED MAY 2013 TYPICAL CHARACTERISTICS (continued) 10V/div 10V/div FLT FLT ~5W PLIM ~5W PLIM 10V/div 1A/div 1V/div 10V/div VOUT ILOAD 1A/div 1V/div CT VOUT ILOAD CT 0.5ms/div 2ms/div Figure 11. Power Dissipation During 12-V Startup into a 60Ω, 660-μF Load Figure 12.
PAGE 10
TPS2590 SLUS960F – JULY 2009 – REVISED MAY 2013 www.ti.com APPLICATION INFORMATION Startup Large inrush current occurs when power is applied to discharged capacitors and load. During the inrush period, the TPS2590 operates in power limit (or SOA protect mode) managing the current as VOUT rises. In SOA protect mode, the internal MOSFET power dissipation ([VIN – VOUT] x IOUT) is regulated at 5W typical while the fault timer starts and CCT ramps up.
PAGE 11
TPS2590 www.ti.com SLUS960F – JULY 2009 – REVISED MAY 2013 2 4 ´ RMIN ´ PLIM _ MIN > VIN RLOAD > RMIN = (10) 2 VIN 4 ´ PLIM _ MIN (11) Enable Pin Considerations For the case when EN is simply connected to GND, TPS2590 will start ramping the voltage on OUT as IN rises above UVLO (~2.85V typical). If IN does not ramp monotonically, the TPS2590 may momentarily turn off then on during startup if IN falls below ~2.70V.
PAGE 12
TPS2590 SLUS960F – JULY 2009 – REVISED MAY 2013 2V/div FLT 0.5V/div CT 1A/div ILOAD 5V/div VOUT www.ti.com 5ms/div Figure 17. Fault Timer Operation During Start up CCT can be chosen for fault-free start up including expected CLOAD and CCT capacitance tolerance as shown in Equation 12. (1 + CLOAD_TOL + CCT_TOL ) ´ t ON CCT = 40000 (12) Normal Operation When load current exceeds IFAULT during normal operation the fault timer starts.
PAGE 13
TPS2590 www.ti.com SLUS960F – JULY 2009 – REVISED MAY 2013 Programming the Fault (IFAULT) and Current-limit (ILIM) Thresholds The IFAULT and ILIM thresholds are user programmable with an external resistor. The TPS2590 uses an internal regulation loop to provide a regulated voltage on the IFLT and ILIM pins. The current-limit thresholds are proportional to the current sourced out of IFLT and ILIM. The recommended 1% resistor range is 49.9kΩ ≤ RRFLT ≤ 200kΩ and 40.
PAGE 14
TPS2590 SLUS960F – JULY 2009 – REVISED MAY 2013 www.ti.com 12V Bus OUT IN EN FLT GND 7 8 38.3kΩ 6 CT IFLT ILIM 15 9 Optional: To System Monitor 0.39µF RTRY 47.5kΩ 16 CLOAD TPS2590 Figure 18. Design Example Schematic 1. Calculate maximum RRFLT to ensure that minimum IFAULT is above maximum operating load current using Equation 16 as shown below in Equation 21. RRFLT,max = 0.99 ´ 185.58 = 47.97kW 3.7 + 0.13 (21) ● Choose a standard 1% value below RRFLT,max for RRFLT = 47.
PAGE 15
TPS2590 www.ti.com SLUS960F – JULY 2009 – REVISED MAY 2013 Where; VSPIKE(absolute ) = VNOM + ILOAD ´ L • • • • C (23) VNOM equals the nominal supply voltage. ILOAD equals the load current. C equals the capacitance present at the input or output of the TPS2590. L equals the effective inductance seen looking into the source or the load. The inductance due to a straight length of wire equals approximately. Where; æ 4´L ö - 0.75 ÷ (nH) Lstraightwire » 0.
PAGE 16
TPS2590 SLUS960F – JULY 2009 – REVISED MAY 2013 www.ti.com REVISION HISTORY Changes from Original (July 2009) to Revision A • Page Changed the Application diagram ......................................................................................................................................... 1 Changes from Revision A (July 2010) to Revision B Page • Added Feature: UL Listed - File Number E169910 .................................................................................................
PAGE 17
PACKAGE OPTION ADDENDUM www.ti.
PAGE 18
PACKAGE MATERIALS INFORMATION www.ti.com 17-May-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 TPS2590RSAR QFN RSA 16 3000 330.0 12.4 4.25 4.25 1.15 8.0 12.0 Q2 TPS2590RSAT QFN RSA 16 250 180.0 12.4 4.25 4.25 1.15 8.0 12.
PAGE 19
PACKAGE MATERIALS INFORMATION www.ti.com 17-May-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS2590RSAR QFN RSA 16 3000 367.0 367.0 35.0 TPS2590RSAT QFN RSA 16 250 210.0 185.0 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.