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Power MUX. TPS25944A Datasheet

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Power MUX. TPS25944A Datasheet






TPS25944A MUX. Datasheet pdf. Equivalent




TPS25944A MUX. Datasheet pdf. Equivalent





Part

TPS25944A

Description

eFuse Power MUX



Feature


Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity TPS25942A, TPS25942L, TPS25944A , TPS25944L SLVSCE9D – JUNE 2014 – REVISED OCTOBER 2017 TPS25942x/44x 2.7 V-18 V, 5-A eFuse Power MUX With Multip le Protection Modes 1 Features •1 2. 7 V to 18 V Operating Voltage, 20 V (Ma ximum) • 42-mΩ RON (Typical) • 0.6 A to 5.3 A Adjustable Curren.
Manufacture

Texas Instruments

Datasheet
Download TPS25944A Datasheet


Texas Instruments TPS25944A

TPS25944A; t Limit (±8%) • IMON Current Indicato r Output (±8%) • 200-µA Operating I Q (Typical) • 15-µA Disabled IQ (Typ ical) • ±2% Overvoltage, Undervoltag e Thresholds • Reverse Current Blocki ng • 1-µs Reverse Voltage Shutoff Programmable dVo/dt Control • Power Good and Fault Outputs • Two Overcur rent Fault Response Options – TPS2594 2: I(LIMIT) with Thermal Shutdown – TPS25944.


Texas Instruments TPS25944A

: 4 ms Fault Timer then Shutoff • –4 0°C to +125°C Junction Temperature Ra nge • UL 2367 Recognized – File No. 169910 – RILIM ≥ 20 kΩ (4.81 A Ma ximum) • UL60950 Safe during Single P oint Failure – Open-Short ILIM detect ion 2 Applications • Power Path Manag ement • Redundant Power Supply System s • PCIe cards, NICs and RAID Systems • USB Power Banks, Power MUXes • SSDs and .


Texas Instruments TPS25944A

HDDs • Tablets and Notebooks • Adapt er Power Devices • PLCs, SS Relays an d Fan Control 3 Description The TPS259 42, TPS25944 eFuse Power MUX is a compa ct, feature rich power management devic e with a full suite of protection funct ions. The wide operating range allows c ontrol of many popular DC bus voltages. Integrated back-to-back FETs provide b idirectional current con.

Part

TPS25944A

Description

eFuse Power MUX



Feature


Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity TPS25942A, TPS25942L, TPS25944A , TPS25944L SLVSCE9D – JUNE 2014 – REVISED OCTOBER 2017 TPS25942x/44x 2.7 V-18 V, 5-A eFuse Power MUX With Multip le Protection Modes 1 Features •1 2. 7 V to 18 V Operating Voltage, 20 V (Ma ximum) • 42-mΩ RON (Typical) • 0.6 A to 5.3 A Adjustable Curren.
Manufacture

Texas Instruments

Datasheet
Download TPS25944A Datasheet




 TPS25944A
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TPS25942A, TPS25942L, TPS25944A, TPS25944L
SLVSCE9D – JUNE 2014 – REVISED OCTOBER 2017
TPS25942x/44x 2.7 V-18 V, 5-A eFuse Power MUX With Multiple Protection Modes
1 Features
1 2.7 V to 18 V Operating Voltage, 20 V (Maximum)
• 42-mΩ RON (Typical)
• 0.6 A to 5.3 A Adjustable Current Limit (±8%)
• IMON Current Indicator Output (±8%)
• 200-µA Operating IQ (Typical)
• 15-µA Disabled IQ (Typical)
• ±2% Overvoltage, Undervoltage Thresholds
• Reverse Current Blocking
• 1-µs Reverse Voltage Shutoff
• Programmable dVo/dt Control
• Power Good and Fault Outputs
• Two Overcurrent Fault Response Options
– TPS25942: I(LIMIT) with Thermal Shutdown
– TPS25944: 4 ms Fault Timer then Shutoff
• –40°C to +125°C Junction Temperature Range
• UL 2367 Recognized
– File No. 169910
– RILIM 20 kΩ (4.81 A Maximum)
• UL60950 Safe during Single Point Failure
– Open-Short ILIM detection
2 Applications
• Power Path Management
• Redundant Power Supply Systems
• PCIe cards, NICs and RAID Systems
• USB Power Banks, Power MUXes
• SSDs and HDDs
• Tablets and Notebooks
• Adapter Power Devices
• PLCs, SS Relays and Fan Control
3 Description
The TPS25942, TPS25944 eFuse Power MUX is a
compact, feature rich power management device with
a full suite of protection functions. The wide operating
range allows control of many popular DC bus
voltages. Integrated back-to-back FETs provide
bidirectional current control making the device well
suited for power muxing and systems with multiple
power sources.
Load, source and device protection are provided with
many programmable features. Thresholds for
undervoltage, overvoltage, overcurrent, dVo/dt ramp
rate, power good, and in-rush current protection are
all programmable to suit specific system
requirements. For system status monitoring and
downstream load control, the device provides
PGOOD, FLT and precise current monitor output.
The TPS25942, TPS25944 monitor V(IN) and V(OUT) to
provide true reverse blocking from output when V(IN) <
(V(OUT) – 10 mV). The device can be configured to
assign Main/Auxiliary supply priority using the FLT
and DMODE pins.
Device Information(1)
PART NUMBER(2)
PACKAGE
BODY SIZE (NOM)
TPS25942L
TPS25942A
TPS25944L
WQFN (20)
3.00 mm x 4.00 mm
TPS25944A
(1) For all available packages, see the orderable addendum at
the end of the datasheet
(2) TPS2594xL = Latched, TPS2594xA = Auto Retry
2.7 to 18 V
V(IN)
Simplified Schematic
IN
RTOTAL =
EN/UVLO 42 m:
OVP
OUT
FLT
PGOOD
To Load
Failover of V(MAIN) = 12 V to V(AUX) = 12.3 V
Using Diode Mode Control
DMODE
PGTH
dVdT
IMON
GND TPS25942x ILIM
TPS25944x
COUT = 150 mF, RL = 4 W
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. UNLESS OTHERWISE NOTED, this document contains PRODUCTION
DATA.




 TPS25944A
TPS25942A, TPS25942L, TPS25944A, TPS25944L
SLVSCE9D – JUNE 2014 – REVISED OCTOBER 2017
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 4
6 Pin Configuration and Functions ......................... 4
7 Specifications......................................................... 6
7.1 Absolute Maximum Ratings ...................................... 6
7.2 ESD Ratings.............................................................. 6
7.3 Recommended Operating Conditions....................... 6
7.4 Thermal Information .................................................. 6
7.5 Electrical Characteristics........................................... 7
7.6 Timing Requirements ................................................ 9
7.7 Typical Characteristics ............................................ 10
8 Parameter Measurement Information ................ 18
9 Detailed Description ............................................ 19
9.1 Overview ................................................................. 19
9.2 Functional Block Diagram ....................................... 20
9.3 Feature Description................................................. 22
9.4 Device Functional Modes........................................ 26
10 Application and Implementation........................ 29
10.1 Application Information.......................................... 29
10.2 Typical Application ................................................ 29
10.3 System Examples ................................................ 37
11 Power Supply Recommendations ..................... 44
11.1 Transient Protection .............................................. 44
11.2 Output Short-Circuit Measurements ..................... 45
12 Layout................................................................... 46
12.1 Layout Guidelines ................................................. 46
12.2 Layout Example .................................................... 47
13 Device and Documentation Support ................. 48
13.1 Device Support...................................................... 48
13.2 Documentation Support ........................................ 48
13.3 Related Links ........................................................ 48
13.4 Receiving Notification of Documentation Updates 48
13.5 Community Resources.......................................... 48
13.6 Trademarks ........................................................... 48
13.7 Electrostatic Discharge Caution ............................ 48
13.8 Glossary ................................................................ 49
14 Mechanical, Packaging, and Orderable
Information ........................................................... 49
4 Revision History
Changes from Revision C (January 2017) to Revision D
Page
• Added section 9.3.5 Reverse Current Protection to Feature Description ............................................................................ 25
Changes from Revision B (October 2017) to Revision C
Page
• Changed internal ramp rate of 12 V/ms for output to 30 V/ms in the Hot Plug-In and In-Rush Current Control section..... 23
Changes from Revision A (March 2015) to Revision B
Page
• Changed Figure 49: Added Logic Inversion ......................................................................................................................... 21
Changes from Original (June 2014) to Revision A
Page
• Changed Features From: UL2367 Recognition Pending To: UL 2367 Recognized, RILIM 20 kΩ (4.81 A max), File
No. 169910 ............................................................................................................................................................................. 1
• Changed text in the Description From: FLT and ENBLK pins To: FLT and DMODE pins..................................................... 1
• Deleted Note "Product Preview" from the Device Information table ...................................................................................... 1
• Changed Pin 1 From ENBLK To: DMODE throughout the data sheet .................................................................................. 4
• Changed ENBLK To: DMODE in the Pin Functions table and updated the DESCRIPTION ................................................ 4
• Moved the Storage Temperature From the Handling Ratings table To Absolute Maximum Ratings table .......................... 6
• Changed the Handling Ratings table To: ESD Ratings table ................................................................................................ 6
• Changed DIODE MODE INPUT (ENBLK): ACTIVE LOW To: DIODE MODE INPUT (DMODE): ACTIVE HIGH in the
Electrical Characteristics ........................................................................................................................................................ 7
• Added Test Condition to I(LIM): "R(ILIM) = 20 kΩ" in the Electrical Characteristics .................................................................. 8
• Changed Test Condition in I(LIM) From: "ENBLK = High; Diode Mode" To: "DMODE = High; Non-ideal Diode Mode"
in the Electrical Characteristics ............................................................................................................................................. 8
2
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Copyright © 2014–2017, Texas Instruments Incorporated
Product Folder Links: TPS25942A TPS25942L TPS25944A TPS25944L




 TPS25944A
www.ti.com
TPS25942A, TPS25942L, TPS25944A, TPS25944L
SLVSCE9D – JUNE 2014 – REVISED OCTOBER 2017
• Changed "DIODE MODE INPUT: ACTIVE LOW (ENBLK)" To: DIODE MODE INPUT: ACTIVE HIGH (DMODE)" in
the Timing Requirements ...................................................................................................................................................... 9
• Changed Figure 22............................................................................................................................................................... 12
• Added condition R(ILIM) = 17.8 KΩ to Figure 39 and Figure 40 ............................................................................................ 15
• Changed Figure 43. Added Figure 44, Figure 45, and Figure 46 ........................................................................................ 16
• Changed Figure 48: ENBLK To: DMODE and Diode Mode To: Non-Ideal Diode Mode ..................................................... 20
• Changed Figure 49: ENBLK To: DMODE and Diode Mode To Non-Ideal Diode Mode ...................................................... 21
• Changed Equation 6 to include I(IMON_OS).............................................................................................................................. 25
• Change text in Diode Mode From:" ENBLK...active low terminal" To: "DMODE ...active high terminal"............................. 26
• Changed text in the last sentence of Diode Mode From: "In this mode, the overload current..." To:"In this mode, the
circuit breaker functionality.."................................................................................................................................................ 26
• Added the NOTE to Application and Implementation .......................................................................................................... 29
• Added Note A to Figure 60 .................................................................................................................................................. 33
• Changed Equation 37 From: V(IN) x I(LOAD) To: V(IN) + I(LOAD)................................................................................................. 44
Copyright © 2014–2017, Texas Instruments Incorporated
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3
Product Folder Links: TPS25942A TPS25942L TPS25944A TPS25944L



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