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

SLUS960G –JULY 2009–REVISED JANUARY 2014

5-A, 20-V High-Current Load Switch

Check for Samples: TPS2590

FEATURES

DESCRIPTION

The TPS2590 device provides highly integrated hot-

• Integrated Pass MOSFET

swap power management and superior protection in

• Up to 20-V Bus Operation

applications where the load is powered by busses up

• Programmable Fault Timer

to 20 V. The maximum UV turn-on threshold of 2.9 V

makes the TPS2590 device well suited to standard

• Programmable Fault Current

bus voltages as low as 3.3 V. This device is intended

• Programmable Hard Current-Limit

for systems where a voltage bus must be protected to

• Fast Disable

prevent load shorts from interrupting or damaging

other system components. The TPS2590 device is in

• Thermal Shutdown

a 16-pin QFN package.

• Load Fault Alert

The TPS2590 device has multiple programmable

• Latching and Auto-retry Operation

protection features. Load protection is accomplished

• 4-mm x 4-mm QFN

by a non-current-limiting fault threshold, a hard

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

current-limit threshold, and a fault timer. The dual

current thresholds allow the system to draw high

• UL2367 Recognized - File Number E169910

current for short periods without causing a voltage

droop at the load. An example of this is a disk drive

APPLICATIONS

startup. This technique is ideal for loads that

• RAID Arrays

experience brief high demand, but benefit from

protection levels consistent with average current

• Telecommunications

draw.

• Plug-In Circuit Boards

Hotswap MOSFET protection is provided by power

• Disk Drives

limit circuitry which protects the internal MOSFET

• SSDs

against SOA related failures.

• PCIE

The TPS2590 device provides a fault indicator output

• Fan Control

and allows latch off or retry on fault.

• Notebooks and Netbooks

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 SLUS960G – JULY 2009 – REVISED JANUARY 2014 5-A, 20-V High-Current Load Switch Check for Samples: TPS2590 FEATURES DESCRIPTION • • • • • • • • • • • • The TPS2590 device provides highly integrated hotswap power management and superior protection in applications where the load is powered by busses up to 20 V. The maximum UV turn-on threshold of 2.9 V makes the TPS2590 device well suited to standard bus voltages as low as 3.3 V.
PAGE 2
TPS2590 SLUS960G – JULY 2009 – REVISED JANUARY 2014 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. ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range (unless otherwise noted) (1) (2) MIN MAX Input voltage range IN, OUT –0.3 25 Voltage range FLT –0.3 20 Output sink current FLT –0.
PAGE 3
TPS2590 www.ti.com SLUS960G – JULY 2009 – REVISED JANUARY 2014 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 mΩ 5 7.5 W 0.
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TPS2590 SLUS960G – JULY 2009 – REVISED JANUARY 2014 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 µA 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 ´ 200 kΩ + I FAULT 2.85 V / 2.70 V 1V¸RRFLT + VIN IN 10 MΩ THERMAL SHUTDOWN EN 16 S Q R Q + 16.8 MΩ 1.15 V / 1.00 V 3V 1.
PAGE 5
TPS2590 www.ti.com SLUS960G – JULY 2009 – REVISED JANUARY 2014 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 SLUS960G – JULY 2009 – REVISED JANUARY 2014 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.
PAGE 7
TPS2590 www.ti.com SLUS960G – JULY 2009 – REVISED JANUARY 2014 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 0 50 100 1.80 –50 150 TJ TJ – Junction Temperature– °C 50 100 – Junction Temperature – °C Figure 1. Figure 2.
PAGE 8
TPS2590 SLUS960G – JULY 2009 – REVISED JANUARY 2014 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.
PAGE 9
TPS2590 www.ti.com SLUS960G – JULY 2009 – REVISED JANUARY 2014 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 SLUS960G – JULY 2009 – REVISED JANUARY 2014 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 device 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 5 W typical while the fault timer starts and CCT ramps up.
PAGE 11
TPS2590 www.ti.com SLUS960G – JULY 2009 – REVISED JANUARY 2014 2 4 ´ RMIN ´ PLIM _ MIN > VIN RLOAD > RMIN = (10) 2 VIN 4 ´ PLIM _ MIN = 2 VIN 12 (11) Enable Pin Considerations For the case when EN is simply connected to GND, TPS2590 device begins ramping the voltage on OUT as IN rises above UVLO (~2.85V typical). If IN does not ramp monotonically, the TPS2590 device can momentarily turn off then on during startup if IN falls below approximately 2.7 V.
PAGE 12
TPS2590 SLUS960G – JULY 2009 – REVISED JANUARY 2014 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 SLUS960G – JULY 2009 – REVISED JANUARY 2014 Overcurrent Shutdown Overcurrent shutdown occurs when the output current exceeds IFAULT for the duration of the fault timer. Figure 8 shows a step rise in output current which exceeds the IFAULT threshold but not the ILIM threshold. The increased current is on for the duration of the timer. When the timer expires, the output is turned off.
PAGE 14
TPS2590 SLUS960G – JULY 2009 – REVISED JANUARY 2014 12V Bus www.ti.com OUT IN EN 15 FLT GND 7 8 38.3kΩ 6 CT IFLT ILIM 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 SLUS960G – JULY 2009 – REVISED JANUARY 2014 Where; VSPIKE(absolute ) = VNOM + ILOAD ´ L • • • • C 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 (23) The inductance because of a straight length of wire equals approximately. Where; æ 4´L ö - 0.75 ÷ (nH) Lstraightwire » 0.
PAGE 16
TPS2590 SLUS960G – JULY 2009 – REVISED JANUARY 2014 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 25-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 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 25-Jun-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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