TPS24740 Datasheet, PDF (1/61 Pages) Texas Instruments – 2.5-V to 18-V High Performance Hot Swap and ORing Controller

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TPS24740
TPS24741
TPS24742
SLVSCV6A – JANUARY 2015 – REVISED FEBRUARY 2015
TPS2474x 2.5-V to 18-V High Performance Hot Swap and ORing Controller
Check for Samples: TPS24740, TPS24741, TPS24742
1 Features
•1 2.5V to 18V Bus Operation (30V abs max)
• Programmable Protection Settings:
– Current Limit: ±5% at 10mV
– Fast Trip: ±10% at 20mV
– Reverse Voltage: ±1mV at –1 mV
• Programable Response Time for Fast Trip and
Reverse Voltage
• Programmable FET SOA Protection
• Dual Timer (Inrush/Fault)
• Interchangeable Hot Swap and ORing
• Analog Current Monitor (1% at 25mV)
• Status Flags for Faults and Power Good
• UV and OV Protection
• Independent EN for Hot Swap and ORing
• 4mm × 4mm 24-pin QFN
• 40 = Latch, 41 = Retry, 42 = Fast Latch Off
2 Applications
• Enterprise Storage
• Power Muxing
• Redundant Power Supplies
• Battery Back Up
3 Description
The TPS2474x is an integrated ORing and Hot Swap
controller for 2.5 V to 18 V systems. It's precise and
programmable protection settings aid in the design of
high power, high availability systems where isolating
faults is critical.
Programmable current limit, fast shut down, and fault
timer protect the load and supply during fault
conditions such as a hot - short. The fast shutdown
threshold and response time can be tuned to ensure
a fast response to real faults, while avoiding nuisance
trips. Programmable SOA (Safe Operating Area)
protection and the inrush timer keep the MOSFET
safe under all operating conditions. After asserting a
power good, TPS2474x runs the fault timer during
over-current events, but doesn't current limit. It shuts
down after the fault timer expires. Two independent
timers (inrush/fault) allow the user to customize
protection based on system requirements. The ORing
function of the TPS2474x allows the user to program
the reverse voltage threshold and response time to
aid in the design of redundant power supply systems.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS24740
TPS24741
TPS24742
VQFN (24)
4.00 mm x 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Simplified Schematics
BS FET
VIN
C1
RBG
CRV
RSENS
HS FET
CFST
RHG
BGATE C RVSNM RVSNP VDD SET FSTP SENM HGATE
A
CP
OUTH
CP
ENOR
TPS2474x
PGHS
FLTb
ENHS
IMONBUF
OV
STAT
PLIM
IMON
GND
TINR
TFLT
CINR
CFLT
VOUT
COUT
sp
TPS2474x in Priority Muxing
MAIN Hotswap
OFF if
VMAIN > 11 V
OR
TPS2474x
AUX
Hotswap
OR
TPS2474x
To Load
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. PRODUCTION DATA.