Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - hot swap controller ATCA, MicroTCA™ VQFN 32 Surface-mount

IN12

EN12

EN3

OREN

TPS2458

IN3

VDD3

CT12

CT3

OUT3

PG12

FLT12

PG3

FLT3

SUM12

SUM3

SENP

SET

SENM

PASS

BLK

OUT12

VINT

2 3 10 25 27 29 31

24 AGND

GND GND GND GND GND GND GND

3320 W

6810 W

AdvancedMC

12 V

3.3 V

422 W

0.005 W

12 V

3.3 V

Optional ORing components for redundant systems

CSD16406Q3 x2

100 W 100 W

1 mF

TPS2458

www.ti.com

SLUS916B –FEBRUARY 2009–REVISED MAY 2010

12-V/3.3-V Hot Swap and ORing Controller with Load Current Monitor for AdvancedMC™

Check for Samples: TPS2458

FEATURES

DESCRIPTION

• ATCA AdvancedMC™ Compliant

The TPS2458 AdvancedMC™ slot controller is fully

compliant with the AdvancedMC™ Standard and

• Full Power Control for an AdvancedMC™

provides the required accuracy to meet the demands

Module

of an AdvancedMC™ (Advanced Mezzanine Card)

• Programmable 12-V Current Limit and Fast

module.

Trip

The TPS2458 is an extremely flexible solution that

• Optional 12-V ORing Control for MicroTCA™

protects both the power supply and the load by

• Internal 3.3-V Current Limit

limiting the maximum current into the load and

• Programmable Shunt Gain

shutting off in case of a fault. If a severe fault occurs

the current shuts off immediately.

• Interlock Requires 3.3-V Output Prior to 12 V

Optional ORing support is inherent in the architecture

• 12-V and 3-V Power Good and Fault Outputs

and can be used in MicroTCA™, or other applications

• Load Current Monitor

requiring ORing support.

• 32-Pin PQFN Package

The 3.3-V management channel is internal and

requires only one external resistor for load monitoring

APPLICATIONS

and one external capacitor to set fault time. To

• ATCA Carrier Boards

comply with the AdvancedMC™ requirements, the

• MicroTCA™Power Modules

12-V output is disabled unless the 3.3-V Power Good

• AdvancedMC™ Slots

signal is asserted. Load current monitors are provided

for both the 12 V and 3.3 V channels. Status outputs

• Systems Using 12 V and 3.3 V

include Power Good and Fault indicators for each

• Base Stations

channel. The TPS2458 is in a 32-pin PQFN package.

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.

2AdvancedMC, MicroTCA are trademarks 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 (29 pages)

PAGE 1
TPS2458 www.ti.com SLUS916B – FEBRUARY 2009 – REVISED MAY 2010 12-V/3.3-V Hot Swap and ORing Controller with Load Current Monitor for AdvancedMC™ Check for Samples: TPS2458 FEATURES DESCRIPTION • • The TPS2458 AdvancedMC™ slot controller is fully compliant with the AdvancedMC™ Standard and provides the required accuracy to meet the demands of an AdvancedMC™ (Advanced Mezzanine Card) module.
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TPS2458 SLUS916B – FEBRUARY 2009 – REVISED MAY 2010 www.ti.com ORDERING INFORMATION DEVICE TEMPERATURE PACKAGE ORDERING CODE MARKING TPS2458 -40°C to 85°C QFN32 TPS2458RHB TPS2458 ABSOLUTE MAXIMUM RATINGS (1) over operating free-air temperature range (unless otherwise noted) VALUE –0.3 to 30 IN12, OUT12, SENP, SENM, SET, EN12, FLTx, PGx, OREN –0.3 to 17 IN3, OUT3, EN3\, VDD, CTx, SUMx –0.3 to 5 AGND, GND ESD V –0.3 to 0.3 Human Body Model 2 Charged Device Model kV 0.
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TPS2458 www.ti.com SLUS916B – FEBRUARY 2009 – REVISED MAY 2010 ELECTRICAL CHARACTERISTICS over operating free-air temperature range (unless otherwise noted) PARAMETER CONDITIONS MIN TYP MAX UNITS Threshold voltage, falling edge 1.2 1.3 1.4 V Hysteresis 20 50 80 mV 5 ENABLE INPUTS Pullup current V EN =V OREN = 0 V 8 15 Input bias current V EN12 = V OREN = 17 V 6 15 Input bias current V EN3 = 5 V 1 5 3.3 V Turn off time EN3 deasserts to VVOUT3 < 1.
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TPS2458 SLUS916B – FEBRUARY 2009 – REVISED MAY 2010 www.ti.com ELECTRICAL CHARACTERISTICS (continued) over operating free-air temperature range (unless otherwise noted) PARAMETER CONDITIONS MIN TYP MAX UNITS 12-V UVLO UVLO rising IN12 rising 8.1 8.5 8.9 UVLO hysteresis IN12 falling 0.44 0.5 0.59 V 12-V BLOCKING Turn-on threshold Measure VSENP – VVOUT 5 10 15 Turn-off threshold Measure VSENP – VVOUT –6 –3 0 Turn-off delay 20-mV overdrive, CBLK = 0 pF, tP50-50 200 300 ns 21.
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TPS2458 www.ti.
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TPS2458 SLUS916B – FEBRUARY 2009 – REVISED MAY 2010 www.ti.com 3.3-V Channel Circuitry 0.1 W IN3 OUT3 2.8 V + Q Pump VDD3 96 W en gat 30 mv vcpx ~18 v 12dis + EN3 30 us + PG3 30 uA Fault Timer vcpx CT3 FLT3 30 us Control Logic RSUM + SUM3 Vthoc - [675 mv nominal] 3320 Circuitry Common to Both Channels VINT por en IN12 PREREG Control Logic POR OUT12 2.
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TPS2458 www.ti.com SLUS916B – FEBRUARY 2009 – REVISED MAY 2010 DEVICE INFORMATION NC GND NC GND EN12 GND EN3 GND TPS2458 (Top View) 32 31 30 29 28 27 26 25 24 VINT 1 AGND GND 2 23 VDD3 GND 3 22 SUM3 PG12 4 12-V Inputs SUM12 5 21 PG3 20 FLT3 19 CT3 18 OUT3 17 IN3 PowerPADTM FLT12 6 9 10 11 12 13 14 15 16 GND OREM PASS SENM SET SENP IN12 BLK 8 OUT12 CT12 7 3-V Inputs 12-V Inputs Figure 1. TERMINAL FUNCTIONS NAME NO.
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TPS2458 SLUS916B – FEBRUARY 2009 – REVISED MAY 2010 www.ti.com TERMINAL FUNCTIONS (continued) 2 3 10 GND 25 — Ground connections. 27 29 31 IN3 17 I 3-V input. Supply pin for the 3-V channel internal pass FET. IN12 16 I 12-V input. Supply pin for 12-V channel internal circuitry. OREN 11 I 12-V blocking transistor enable. (active low). Pulling this pin low allows the 12-V channel ORing function to operate normally.
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TPS2458 www.ti.com SLUS916B – FEBRUARY 2009 – REVISED MAY 2010 TYPICAL CHARACTERISTICS 3-V INPUT CURRENT vs JUNCTION TEMPERATURE 12-V TURN OFF VOLTAGE THRESHOLD vs JUNCTION TEMPERATURE 0.26 VTURNOFF12 –Turn Off Threshold – mV 0 IDD_3V – Input Current – mA 0.25 0.24 0.23 0.22 0.21 0.20 -50 -1 -2 -3 -4 -5 0 50 100 150 -50 TJ – Junction Temperature – °C 50 100 Figure 2. Figure 3. 12-V INPUT CURRENT vs JUNCTION TEMPERATURE 12-V TURN ON THRESHOLD vs JUNCTION TEMPERATURE 2.
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TPS2458 SLUS916B – FEBRUARY 2009 – REVISED MAY 2010 www.ti.com TYPICAL CHARACTERISTICS (continued) 12-V INPUT CURRENT vs INPUT VOLTAGE 12-V CURRENT LIMIT THRESHOLD VOLTAGE vs JUNCTION TEMPERATURE 51.0 VILIM – Current Limit Threshold Voltage – mV 2.45 IDD – Input Current – mA 2.40 2.35 2.30 2.25 2.20 2.15 2.10 VIN = 12 V 50.8 50.6 50.4 50.2 50.0 10 11 12 13 14 -50 Figure 6. 10 0 50 100 150 TJ – Junction Temperature – °C VIN – Input Voltage – V Figure 7.
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TPS2458 www.ti.com SLUS916B – FEBRUARY 2009 – REVISED MAY 2010 TYPICAL WAVEFORMS Figure 8. OUT3 Startup Into 22-Ω, (150 mA), 150-mF Load . . Figure 9. OUT3 Load Stepped from 165 mA to 240 mA . . Figure 10. OUT3 Short Circuit Under Full Load, (165 mA), Zoom View . . Figure 11. OUT3 Short Circuit Under Full Load, (165 mA), Wide View . .
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TPS2458 SLUS916B – FEBRUARY 2009 – REVISED MAY 2010 www.ti.com TYPICAL WAVEFORMS (continued) 12 Figure 12. OUT3 Startup Into Short Circuit . . Figure 13. OUT12 Startup Into 500-Ω, 830-mF Load . . Figure 14. OUT12 Startup Into 80-W, 830-mF Load . . Figure 15. OUT12 Short Circuit Under Full Load, (6.7 A), Wide View . .
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TPS2458 www.ti.com SLUS916B – FEBRUARY 2009 – REVISED MAY 2010 TYPICAL WAVEFORMS (continued) Figure 16. OUT12 Short Circuit Under Full Load, (6.7 A), Zoom View . . Figure 17. OUT12 Startup Into Short Circuit . . Figure 18. OUT12 Overloaded While Supplying 6.7 A . .
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TPS2458 SLUS916B – FEBRUARY 2009 – REVISED MAY 2010 www.ti.com APPLICATION INFORMATION The TPS2458 has been designed to simplify compliance with the PICMG-AMC.R2.0 and PICMG-MTCA.0 specifications. These specifications were developed by the PCI Industrial Computer Manufacturers Group (PICMG). These two specifications are derivations of the PICMG-ATCA (Advanced Telecommunication Computing Architecture) specification originally released in December, 2002.
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TPS2458 www.ti.com SLUS916B – FEBRUARY 2009 – REVISED MAY 2010 Enable Functions The TPS2458 provides three external enable pins for the AdvancedMC™ slot. Pulling the EN3 low turns on the 3-V channel. Pulling the EN12 pin low turns on the 12-V channel. If the EN12 pin goes high, the TPS2458 pulls the PASS and BLK pins to ground. Pulling the OREN pin low turns on the reverse blocking logic in the 12-V channel. If the OREN pin goes high, then the BLK pin remains low.
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TPS2458 SLUS916B – FEBRUARY 2009 – REVISED MAY 2010 www.ti.com 3.3-V Current Limiting The 3.3-V management power channel includes an internal pass FET and current sense resistor. The on-resistance of the management channel — including pass FET, sense resistor, metallization resistance, and bond wires — typically equals 290 mΩ and never exceeds 500 mΩ. The AdvancedMC™ specification allows a total of 1 Ω between the power source and the load. The TPS2458 never consumes more than half of this budget. 3.
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TPS2458 www.ti.com SLUS916B – FEBRUARY 2009 – REVISED MAY 2010 12-V Fast Trip and Current Limiting Figure 19 shows a simplified block diagram of the circuitry associated with the fast trip and current limit circuitry in the 12-V channel, which requires an external N-channel pass FET and three external resistors. These resistors allow the user to independently set the fast trip threshold and the current limit threshold, as described below.
PAGE 18
TPS2458 SLUS916B – FEBRUARY 2009 – REVISED MAY 2010 www.ti.com A system capable of powering an 80-W AdvancedMC™ module consumes a maximum of 8.25 A according to MicroTCA™ specifications. The above equation suggests RSET = 417 Ω. The nearest 1% EIA value equals 422 Ω. The selection of RSET for MicroTCA™ power modules is described in the Redundant vs. Non-redundant Inrush Current Limiting section.
PAGE 19
TPS2458 www.ti.com SLUS916B – FEBRUARY 2009 – REVISED MAY 2010 Multiswap Operation in Redundant Systems TheTPS2458 features an additional mode of operation called Multiswap redundancy. This technique does not require a microcontroller, making it simpler and faster than the redundancy schemes described in the MicroTCA™standard. Multiswap is especially attractive for AdvancedMC™ applications that require redundancy but need not comply with the MicroTCA™ power module standard.
PAGE 20
TPS2458 SLUS916B – FEBRUARY 2009 – REVISED MAY 2010 www.ti.com 12-V Inrush Slew Rate Control Although it is possible to slow the gate slew rate it is very unlikely that would be necessary since the TPS2458 limits inrush current at turn on. The limit level is programmed by the user. As normally configured, the turn-on slew rate of the 12-V channel output voltage VOUT is shown in Equation 8.
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TPS2458 www.ti.com SLUS916B – FEBRUARY 2009 – REVISED MAY 2010 Layout Considerations TPS2458 applications require layout attention to ensure proper performance and minimize susceptibility to transients and noise. In general, all runs should be as short as possible but the list below deserves first consideration. 1. Decoupling capacitors on IN12 and IN3 should have minimal length to the pin and to GND. 2. SENM and SENP runs must be short and run side by side to maximize common mode rejection.
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TPS2458 SLUS916B – FEBRUARY 2009 – REVISED MAY 2010 www.ti.com Transient Protection TPS2458 devices in deployed systems are not likely to have long, inductive feeds or long load wires. However, it is always advised that an analysis be performed to determine the need for transient protection. When the TPS2458 interrupts current flow any inductance on the input will tend to cause a positive voltage spike on the input and any inductance on the output will tend to cause a negative voltage spike on the output.
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TPS2458 www.ti.com SLUS916B – FEBRUARY 2009 – REVISED MAY 2010 REVISION HISTORY Changes from Revision A (August 2009) to Revision B Page • Changed Typical Application Diagram .................................................................................................................................. 1 • Changed 12-V Channel Circuitry Diagram ........................................................................................................................... 5 • Changed Figure 19 ........
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PACKAGE MATERIALS INFORMATION www.ti.com 27-Jul-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 TPS2458RHBR VQFN RHB 32 3000 330.0 12.4 5.3 5.3 1.5 8.0 12.0 Q2 TPS2458RHBT VQFN RHB 32 250 180.0 12.4 5.3 5.3 1.5 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 27-Jul-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS2458RHBR VQFN RHB 32 3000 367.0 367.0 35.0 TPS2458RHBT VQFN RHB 32 250 210.0 185.0 35.
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